Flex

Flex is a growth-stage, NYC headquartered FinTech company that is building the payment layer for life's essential bills, giving households one place to see, split, and pay their bills around how they live and get paid. By offering greater choice over how and when payments are made and allowing eligible on time payments to help build a positive credit history, Flex puts households back in control of their cash flow. That work brings together people with different perspectives who challenge the status quo and take ownership of solving difficult problems. For you, that means doing the best work of your career next to people who make you better, and together bringing ideas to life that make a real impact for the people we serve. About the role As a Senior SDET at Flex, you will own the test automation and quality efforts for entire product areas or major features. You will architect and optimize automation frameworks, lead test strategy for complex systems, and regularly collaborate across teams to deliver reliable and high-quality releases. This role offers the opportunity to mentor others, drive cross-functional quality improvements, and play a critical part in shaping the future of our engineering excellence. What you’ll do Architect, implement, and optimize automated test frameworks for complex product areas, ensuring high reliability and maintainability Design, develop, and maintain robust automated test suites for API, UI, and integration testing Lead test strategy development and perform risk analysis for major features and systems Integrate automated testing into CI/CD pipelines, supporting continuous integration and delivery processes Proactively identify systemic quality issues and drive cross-team process improvements to increase coverage and efficiency Analyze test coverage, identify gaps, and implement solutions to improve product quality Collaborate closely with engineering, product, and quality leaders on cross-functional quality initiatives and release planning Provide technical guidance and mentorship to junior SDETs and QA team members, fostering skill development and best practices Review code and test cases contributed by other engineers for quality and maintainability Maintain accurate and actionable test documentation, reports, and quality metrics for assigned product areas Investigate and resolve complex defects and production issues through advanced debugging and root cause analysis Advocate for quality and champion adoption of best practices within and across engineering teams Proven ability to lead test strategy and risk analysis while making high-impact technical decisions amid ambiguity and prioritizing what matters most. Key qualifications Bachelor’s degree in Computer Science or related field, or equivalent experience 5+ years of experience in software development and test automation Advanced proficiency in multiple programming languages and test automation frameworks Deep experience designing, building, and maintaining automation frameworks (e.g., Playwright, Cypress, Selenium, RestAssured) Strong expertise in API, UI, and integration testing Proficient in CI/CD pipeline integration and optimization Skilled in test strategy development, risk analysis, and test architecture Advanced debugging, troubleshooting, and root cause analysis Solid understanding of database systems and advanced SQL Experience with observability and monitoring tools (e.g., DataDog, NewRelic) Excellent cross-functional communication and mentorship skills Strong written and verbal communication skills; able to collaborate across functions Compensation Flex takes a market-based approach to pay, and compensation may vary depending on your primary work location. Work locations are categorized into one of three tiers based on a cost of labor index for that geographic area. The successful candidate’s starting pay will be commensurate with their experience, qualifications, and Flex’s internal leveling guidelines and benchmarks. Tier 1 (NYC/Bay Area, Los Angeles, Seattle) $136,000—$170,000 USD Tier 2 (Austin, Washington D.C. Philadelphia, San Diego, Chicago, Atlanta) $122,400—$153,000 USD Tier 3 (Salt Lake City, all other USA cities) $115,600—$144,500 USD Life at Flex We understand that it takes a diverse team of highly intelligent, curious, determined, empathetic, and self aware people to grow a successful company. Our HQ is located in New York City, but we have employees located throughout the US, Australia, Canada and South America. We are growing quickly, but deliberately, with a focus on building an inclusive culture. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity workplace. Offices Roles posted in New York, San Francisco, and Salt Lake City are hybrid positions with on-site expectations of 2-3 days per week in our local offices. For candidates outside of these areas, you may be eligible for our relocation assistance program. B

Flex is building the AI-native private bank for business owners . We’re re-architecting the entire financial system for entrepreneurs—from the first dollar a business earns to how that value compounds, moves, and is ultimately spent in real life. Banking, credit, payments, personal finance, and financial operations—rebuilt from the ground up as a single, intelligent system. Flex is the full financial home for ambitious owners. Since launching publicly in September 2023 , Flex has scaled from zero to nine-figure annualized revenue , with a clear path to profitability by late 2026 . We move fast, ship relentlessly, and operate with extreme ownership. Our customers are affluent business owners ($3–$200M in revenue) —the backbone of the economy and one of the most underserved segments in finance. They’re stuck with outdated banks and fragmented tools. We’re replacing all of it. The opportunity is massive: a ~$1T+ revenue market hiding in plain sight. Our ambition is to build a $100B+ company by delivering a product that is fundamentally better—not incrementally improved. Flex has raised $100M+ in equity and $300M+ in debt. - Mission-critical problems : We build software that directly controls how money moves at scale. - High bar, low ego : Small teams, exceptional people, real ownership. - Speed over comfort : We prioritize execution, quality, clarity, and results. - Enduring impact : What we’re building will define how a generation of owners runs their businesses. Team & Locations We hire exceptional people who want to build hard things and see their work matter immediately. Roles are available in: San Francisco, Miami, New York, and fully remote. Flex Fuels Ambition. The Role We are looking for product owners who are excited to be part of our early story and help us build a category leading company. You will learn quickly, reflect on "the way the world should work", own outcomes, and drive the creation of financial products and experiences to help our customers reach their full potential. You should have a strong sense of ownership and enjoy taking projects from inception to release. As an early employee, you’ll be working with a nimble team of committed and talented employees and having a large, long-term impact on Flex products and culture. We are open to candidates from Canada, Mexico, the United States, Brazil and Colombia. What you'll do Develop and own Flex's "Growth engine" across "Infinite wedges". Flex acquires customers in many unique ways that meet business owners where they are. We build software to make these experiences extremely unique. You'll own our growth - end to end - for the full "multi-product" experience. Drive the enhancement of financial services and products, including mobile apps, online account management tools, and virtual payment solutions. Continuously improve the user experience and add features to meet changing customer needs. Collaborate with internal stakeholders to identify opportunities within the organization's operational processes. Develop internal financial solutions, such as automated reporting tools, data analytics platforms, and workflow optimization systems, to increase efficiency and streamline operations. Work closely with compliance and legal to ensure that all products adhere to relevant financial regulations and industry standards. Mitigate potential risks through robust product design and implementation. Stay up-to-date with changes in industry regulations and security protocols. Conduct user research and market analysis to understand customer preferences, pain points, and emerging trends. Utilize these insights to inform product development decisions. Partner with engineering throughout the development lifecycle. Provide clear and detailed product requirements, prioritize features, and ensure the timely delivery of high-quality solutions. Implement necessary measures to safeguard customer data and ensure compliance with relevant laws. Utilize data analytics and performance metrics to assess product performance, identify areas for improvement, and make data-driven decisions to optimize products. Work closely with customer support teams to address customer inquiries, feedback, and issues related to products. Continuously strive to improve customer satisfaction and retention. Develop and communicate a clear product roadmap and strategy. Align the product vision with the Flex's overall objectives. What you'll need Can run sprints. Extremely high trajectory and horsepower. Flex is a place for people who want to own outcomes. Proven experience as a Product Owner or similar role at a startup with a focus on financial products. We bring SaaS platform principles to traditional FinTech. Solid knowledge of credit risk assessment, lending processes, and banking operations a nice to have. Familiarity with compliance standards, regulations, and security protocols relevant to the credit and banking sectors a nice to have. Willingness to become an expert is a must. Excellen

Flex is building the AI-native private bank for business owners . We’re re-architecting the entire financial system for entrepreneurs—from the first dollar a business earns to how that value compounds, moves, and is ultimately spent in real life. Banking, credit, payments, personal finance, and financial operations—rebuilt from the ground up as a single, intelligent system. Flex is the full financial home for ambitious owners. Since launching publicly in September 2023 , Flex has scaled from zero to nine-figure annualized revenue , with a clear path to profitability by late 2026 . We move fast, ship relentlessly, and operate with extreme ownership. Our customers are affluent business owners ($3–$200M in revenue) —the backbone of the economy and one of the most underserved segments in finance. They’re stuck with outdated banks and fragmented tools. We’re replacing all of it. The opportunity is massive: a ~$1T+ revenue market hiding in plain sight. Our ambition is to build a $100B+ company by delivering a product that is fundamentally better—not incrementally improved. Flex has raised $100M+ in equity and $300M+ in debt. - Mission-critical problems : We build software that directly controls how money moves at scale. - High bar, low ego : Small teams, exceptional people, real ownership. - Speed over comfort : We prioritize execution, quality, clarity, and results. - Enduring impact : What we’re building will define how a generation of owners runs their businesses. Team & Locations We hire exceptional people who want to build hard things and see their work matter immediately. Roles are available in: San Francisco, Miami, New York, and fully remote. Flex Fuels Ambition. About the Role This is a new program and the chance to be part of the founding team of the Office of the CEO. We’re creating a small team of high-caliber operators working directly for our Founder & CEO on whatever the company’s highest-priorities are. It is not a rotational program or a fixed analyst lane — scope is set by what the company needs solved, not by a job description. You will be the one to help identify what these opportunities are. What You'll Do Take on the CEO’s highest-priority problems directly — strategic projects, market research and competitive work, financial analysis, and cross-functional execution, often with no existing playbook Identify problems, develop solutions, and execute them; often working on multiple initiatives Build and own the models and analyses that inform major company decisions Collaborate with and move fluidly across various departments as business priorities shift As the early stages of this team grows, you will help recruit, ramp, and manage the associates who join after you Requirements 3–5 years in top-tier investment banking (TMT/fintech coverage), private equity, management consulting, late-stage venture capital, or a fast-growing startup A track record of outperformance — clear signals you were trusted with more scope, faster, than your peers Strong quantitative and analytical skills: advanced Excel, working knowledge of SQL, and comfort dissecting messy data and building models from scratch Extreme rigor and comfort operating in ambiguity at speed — priorities here change faster than the plan does Demonstrated ability to sustain a high-intensity pace: this role will regularly require ~12-hour days, 5–6 days a week, especially in year one This role is based in Miami or NYC but will involve travel Nice to Haves Ideal background in math, physics, or another highly quantitative field Understanding of fintech, banking, or financial infrastructure Compensation The starting base salary for this role is $200k+ equity. This is a full-time role with benefits. Final compensation is commensurate with candidate experience, work location, and interview performance. Additional Information Why Join Us Build something generational — Capture the full lifecycle of money for ambitious business owners. Work on real money, real risk — Payments, credit, and banking at serious scale. Solve hard problems — AI, underwriting, compliance, and global finance from first principles. True ownership — Small teams, high trust, real accountability. Founder-level exposure — Direct access to leadership, customers, and investors. High bar, high taste — Move fast without cutting corners. Elite peers — People here are builders, not tourists. Real upside — Meaningful equity if you help build something big.

Flex is building the AI-native private bank for business owners . We’re re-architecting the entire financial system for entrepreneurs—from the first dollar a business earns to how that value compounds, moves, and is ultimately spent in real life. Banking, credit, payments, personal finance, and financial operations—rebuilt from the ground up as a single, intelligent system. Flex is the full financial home for ambitious owners. Since launching publicly in September 2023 , Flex has scaled from zero to nine-figure annualized revenue , with a clear path to profitability by late 2026 . We move fast, ship relentlessly, and operate with extreme ownership. Our customers are affluent business owners ($3–$200M in revenue) —the backbone of the economy and one of the most underserved segments in finance. They’re stuck with outdated banks and fragmented tools. We’re replacing all of it. The opportunity is massive: a ~$1T+ revenue market hiding in plain sight. Our ambition is to build a $100B+ company by delivering a product that is fundamentally better—not incrementally improved. Flex has raised $100M+ in equity and $300M+ in debt. - Mission-critical problems : We build software that directly controls how money moves at scale. - High bar, low ego : Small teams, exceptional people, real ownership. - Speed over comfort : We prioritize execution, quality, clarity, and results. - Enduring impact : What we’re building will define how a generation of owners runs their businesses. Team & Locations We hire exceptional people who want to build hard things and see their work matter immediately. Roles are available in: San Francisco, Miami, New York, and fully remote. Flex Fuels Ambition. About the Role We’re hiring a People Operations Manager to help build and run the core people processes that support Flex as we grow. This role will focus on performance management, employee lifecycle operations, compliance, and manager support. You’ll partner closely with leadership to create clear, effective people processes that help the company scale thoughtfully. This role is a good fit for someone with strong startup experience who knows how to bring structure to a fast-moving environment. You should be organized, practical, and comfortable balancing process design with day-to-day execution. ✅ What You’ll Do Own and improve core people operations processes across the employee lifecycle, from onboarding through offboarding Track and report on key people metrics, including review completion, headcount movements, onboarding progress, and other operational indicators Design, launch, and refine performance review cycles, calibration processes, and supporting documentation Administer and improve people systems, documentation, and workflows across HRIS, payroll, benefits, and employee records Help ensure people processes are compliant, well-documented, and scalable across states, teams, and growth stages Own employment documentation, policy administration, and coordination with legal or external partners as needed Support compensation and promotion cycle logistics, including tracking, documentation, and process coordination Partner with managers on employee relations issues, performance follow-up, and organizational changes Identify gaps in current people operations workflows and implement simple systems that improve consistency and execution What We’re Looking For 5–8+ years of experience in people operations, HR operations, or a people generalist role in a high-growth startup or scale-up Strong experience building and running performance review processes and manager-facing people workflows Hands-on systems thinker who enjoys building from scratch and improving workflows Proven ability to introduce structure in fast-moving environments without overcomplicating processes Solid understanding of employee lifecycle operations, compliance fundamentals, and people documentation best practices Highly organized and detail-oriented, with strong operational judgment and follow-through Comfortable handling sensitive employee situations with discretion, sound judgment, and professionalism Compensation Additional Information Why Join Us Build something generational — Capture the full lifecycle of money for ambitious business owners. Work on real money, real risk — Payments, credit, and banking at serious scale. Solve hard problems — AI, underwriting, compliance, and global finance from first principles. True ownership — Small teams, high trust, real accountability. Founder-level exposure — Direct access to leadership, customers, and investors. High bar, high taste — Move fast without cutting corners. Elite peers — People here are builders, not tourists. Real upside — Meaningful equity if you help build something big.

Flex is a growth-stage, NYC headquartered FinTech company that is creating the best rent payment experience. It’s hard to believe that it’s 2026 and paying rent on time is expensive, inflexible, and difficult. We’re here to change that! Flex enables our users to pay rent throughout the month on a schedule that better fits their finances and budget. Our mission is to empower as many renters as possible with flexibility over their most significant recurring expense. After deliberately keeping a stealth profile as we built up unprecedented investor support and an enthusiastic user base, we are looking for motivated individuals to help us keep our mission growing. Will you be a part of the team? About the role As a Senior SDET at Flex, you will own the test automation and quality efforts for entire product areas or major features. You will architect and optimize automation frameworks, lead test strategy for complex systems, and regularly collaborate across teams to deliver reliable and high-quality releases. This role offers the opportunity to mentor others, drive cross-functional quality improvements, and play a critical part in shaping the future of our engineering excellence. What you’ll do Architect, implement, and optimize automated test frameworks for complex product areas, ensuring high reliability and maintainability Design, develop, and maintain robust automated test suites for API, UI, and integration testing Lead test strategy development and perform risk analysis for major features and systems Integrate automated testing into CI/CD pipelines, supporting continuous integration and delivery processes Proactively identify systemic quality issues and drive cross-team process improvements to increase coverage and efficiency Analyze test coverage, identify gaps, and implement solutions to improve product quality Collaborate closely with engineering, product, and quality leaders on cross-functional quality initiatives and release planning Provide technical guidance and mentorship to junior SDETs and QA team members, fostering skill development and best practices Review code and test cases contributed by other engineers for quality and maintainability Maintain accurate and actionable test documentation, reports, and quality metrics for assigned product areas Investigate and resolve complex defects and production issues through advanced debugging and root cause analysis Advocate for quality and champion adoption of best practices within and across engineering teams Proven ability to lead test strategy and risk analysis while making high-impact technical decisions amid ambiguity and prioritizing what matters most. Key qualifications Bachelor’s degree in Computer Science or related field, or equivalent experience 5+ years of experience in software development and test automation Advanced proficiency in multiple programming languages and test automation frameworks Deep experience designing, building, and maintaining automation frameworks (e.g., Playwright, Cypress, Selenium, RestAssured) Strong expertise in API, UI, and integration testing Proficient in CI/CD pipeline integration and optimization Skilled in test strategy development, risk analysis, and test architecture Advanced debugging, troubleshooting, and root cause analysis Solid understanding of database systems and advanced SQL Experience with observability and monitoring tools (e.g., DataDog, NewRelic) Excellent cross-functional communication and mentorship skills Strong written and verbal communication skills; able to collaborate across functions Compensation Flex takes a market-based approach to pay, and compensation may vary depending on your primary work location. Work locations are categorized into one of three tiers based on a cost of labor index for that geographic area. The successful candidate’s starting pay will be commensurate with their experience, qualifications, and Flex’s internal leveling guidelines and benchmarks. Tier 1 (NYC/Bay Area, Los Angeles, Seattle) $136,000—$170,000 USD Tier 2 (Austin, Washington D.C. Philadelphia, San Diego, Chicago, Atlanta) $122,400—$153,000 USD Tier 3 (Salt Lake City, all other USA cities) $115,600—$144,500 USD Life at Flex We understand that it takes a diverse team of highly intelligent, curious, determined, empathetic, and self aware people to grow a successful company. Our HQ is located in New York City, but we have employees located throughout the US, Australia, Canada and South America. We are growing quickly, but deliberately, with a focus on building an inclusive culture. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity workplace. Offices Roles posted in New York, San Francisco, and Salt Lake City are hybrid positions with on-site expectations of 2-3 days per week in our local offices. For candidates outside of these areas, you may be eligible for our relocation assistance program. Benefits For full-time U.S. employe

Flex is building the AI-native private bank for business owners . We’re re-architecting the entire financial system for entrepreneurs—from the first dollar a business earns to how that value compounds, moves, and is ultimately spent in real life. Banking, credit, payments, personal finance, and financial operations—rebuilt from the ground up as a single, intelligent system. Flex is the full financial home for ambitious owners. Since launching publicly in September 2023 , Flex has scaled from zero to nine-figure annualized revenue , with a clear path to profitability by late 2026 . We move fast, ship relentlessly, and operate with extreme ownership. Our customers are affluent business owners ($3–$200M in revenue) —the backbone of the economy and one of the most underserved segments in finance. They’re stuck with outdated banks and fragmented tools. We’re replacing all of it. The opportunity is massive: a ~$1T+ revenue market hiding in plain sight. Our ambition is to build a $100B+ company by delivering a product that is fundamentally better—not incrementally improved. Flex has raised $100M+ in equity and $300M+ in debt. - Mission-critical problems : We build software that directly controls how money moves at scale. - High bar, low ego : Small teams, exceptional people, real ownership. - Speed over comfort : We prioritize execution, quality, clarity, and results. - Enduring impact : What we’re building will define how a generation of owners runs their businesses. Team & Locations We hire exceptional people who want to build hard things and see their work matter immediately. Roles are available in: San Francisco, Miami, New York, and fully remote. Flex Fuels Ambition. About the Role Flex is looking for a curious, detail-oriented analyst to join our Financial Crime team. In this role, you will be reviewing transaction monitoring alerts, conducting KYC due diligence, and helping keep our platform and our customers safe against money laundering, fraud, and other illicit activity. This is a great opportunity for someone early in their compliance career who wants to build deep expertise in a fast-paced fintech environment and grow into broader program responsibilities over time. What You'll Do Transaction Monitoring • Review and disposition transaction monitoring alerts, applying BSA/AML typologies to distinguish suspicious activity from false positives • Draft clear, well-supported case narratives and escalate higher-risk activity for supervisory review • Contribute to UAR/SAR filing support under the direction of senior team members KYC & Customer Due Diligence • Conduct KYC reviews for new and existing customers, verifying identity documents and assessing risk profiles • Identify customers that warrant enhanced due diligence (EDD) and flag for escalation • Maintain accurate, complete records in our case management system Program Support • Assist with periodic quality assurance and file reviews, including for our bank partner program • Help identify patterns or process gaps that could improve detection coverage or review efficiency • Participate in team training and stay current on evolving AML typologies and regulatory guidance What We're Looking For Required • 1–2 years of experience in BSA/AML compliance, fraud operations, or a related financial crimes role (internship or co-op experience considered) • Working knowledge of KYC/CDD requirements and BSA obligations • Strong written communication — you can explain why something is or isn't suspicious in plain language • High attention to detail and comfort working through ambiguous or incomplete information • Ability to manage a queue and prioritize effectively • Embody a growth mindset and bring a self-driven mentality to your work Nice to Have • Experience with a transaction monitoring platform (e.g., Sardine, Unit21, Actimize, or similar) • Exposure to fintech, payments, or BaaS program compliance • CAMS or other AML certification in progress or completed Compensation Additional Information Why Flex At Flex, you'll work on real compliance problems that matter — not just processing tickets in a queue. You'll collaborate directly with program leadership, have visibility into how our financial crime program is built, and grow your skills faster than you would in a large-institution role. We invest in our team's development and support professional certifications. Why Join Us Build something generational — Capture the full lifecycle of money for ambitious business owners. Work on real money, real risk — Payments, credit, and banking at serious scale. Solve hard problems — AI, underwriting, compliance, and global finance from first principles. True ownership — Small teams, high trust, real accountability. Founder-level exposure — Direct access to leadership, customers, and investors. High bar, high taste — Move fast without cutting corners. Elite peers — People here are builders, not tourists. Real upside — Meaningful equity if you help build something big.

Flex is building the AI-native private bank for business owners . We’re re-architecting the entire financial system for entrepreneurs—from the first dollar a business earns to how that value compounds, moves, and is ultimately spent in real life. Banking, credit, payments, personal finance, and financial operations—rebuilt from the ground up as a single, intelligent system. Flex is the full financial home for ambitious owners. Since launching publicly in September 2023 , Flex has scaled from zero to nine-figure annualized revenue , with a clear path to profitability by late 2026 . We move fast, ship relentlessly, and operate with extreme ownership. Our customers are affluent business owners ($3–$200M in revenue) —the backbone of the economy and one of the most underserved segments in finance. They’re stuck with outdated banks and fragmented tools. We’re replacing all of it. The opportunity is massive: a ~$1T+ revenue market hiding in plain sight. Our ambition is to build a $100B+ company by delivering a product that is fundamentally better—not incrementally improved. Flex has raised $100M+ in equity and $300M+ in debt. - Mission-critical problems : We build software that directly controls how money moves at scale. - High bar, low ego : Small teams, exceptional people, real ownership. - Speed over comfort : We prioritize execution, quality, clarity, and results. - Enduring impact : What we’re building will define how a generation of owners runs their businesses. Team & Locations We hire exceptional people who want to build hard things and see their work matter immediately. Roles are available in: San Francisco, Miami, New York, and fully remote. Flex Fuels Ambition. Flex is seeking a strategic and hands-on Head of Growth Marketing to build and scale a modern growth engine that drives a predictable, high-quality pipeline across both self-serve and sales-led motions . This role is ideal for a senior growth leader with a proven track record of scaling demand generation at fast-growing companies. You will own customer acquisition across digital growth surfaces, including web, SEO, paid media, OOH, creator, and emerging channels such as Generative Engine Optimization (GEO) , while partnering closely with Product to drive activation, conversion, and monetization. You will also lead our Demand Generation team , owning performance marketing execution and digital channel strategy. This is a high-impact leadership role for a growth-minded marketer who thrives in experimentation, understands unit economics, and knows how to turn traffic into revenue. What You’ll Do Growth & Demand Generation Leadership • Lead and manage the Demand Gen team, ensuring strong execution across performance marketing, digital channels, and enterprise campaigns • Own paid acquisition across channels, including search, display, paid social, and retargeting. • Optimize CAC, payback period, and channel ROI through continuous experimentation and data-driven iteration. • Partner closely with Sales and RevOps to align on ICPs, pipeline goals, and campaign strategy Self-Serve & Product-Led Growth • Act as the owner of Flex’s self-serve motion, responsible for top-of-funnel acquisition and fueling PLG growth • Partner with Product to drive activation experiments, onboarding flows, conversion optimization, and monetization strategy • Define and track growth KPIs across acquisition, activation, and revenue Website & Digital Growth Surfaces • Own Flex.one as a core growth surface, improving discoverability, performance, and conversion • Drive organic acquisition through technical SEO, structured content, and site optimization • Build visibility across AI-driven discovery platforms such as ChatGPT, Perplexity, and Gemini through Generative Engine Optimization (GEO) Product, Brand & Content Strategy • Develop and execute a clear product and brand marketing strategy that drives awareness, revenue, and sales enablement • Collaborate on product launches, crafting compelling messaging and providing materials to support Sales and partners • Drive Flex’s narrative through high-impact content across website copy, campaigns, organic, paid, email, press, and referral channels What You Bring • 6–10+ years of experience in growth, digital, or performance marketing, ideally in FinTech or a B2B SaaS environment • 3+ years of people management experience, with a track record of building and mentoring high-performing teams • Proven success scaling organizations from $50M → $100M → $200M + ARR • Demonstrated ability to scale self-serve acquisition, activation, and monetization • Deep expertise in SEO, paid acquisition, website optimization, and modern demand generation • Fluency in sales-led acquisition, intent-based targeting, personalization, trigger-based messaging, and predictive analytics • Strong strategic instincts grounded in research, data, and customer insights across campaigns, content, events, organic, paid, affiliate, and beyond • Excellent copywriting, comm

Flex is building the AI-native private bank for business owners . We’re re-architecting the entire financial system for entrepreneurs—from the first dollar a business earns to how that value compounds, moves, and is ultimately spent in real life. Banking, credit, payments, personal finance, and financial operations—rebuilt from the ground up as a single, intelligent system. Flex is the full financial home for ambitious owners. Since launching publicly in September 2023 , Flex has scaled from zero to nine-figure annualized revenue , with a clear path to profitability by late 2026 . We move fast, ship relentlessly, and operate with extreme ownership. Our customers are affluent business owners ($3–$200M in revenue) —the backbone of the economy and one of the most underserved segments in finance. They’re stuck with outdated banks and fragmented tools. We’re replacing all of it. The opportunity is massive: a ~$1T+ revenue market hiding in plain sight. Our ambition is to build a $100B+ company by delivering a product that is fundamentally better—not incrementally improved. Flex has raised $100M+ in equity and $300M+ in debt. - Mission-critical problems : We build software that directly controls how money moves at scale. - High bar, low ego : Small teams, exceptional people, real ownership. - Speed over comfort : We prioritize execution, quality, clarity, and results. - Enduring impact : What we’re building will define how a generation of owners runs their businesses. Team & Locations We hire exceptional people who want to build hard things and see their work matter immediately. Roles are available in: San Francisco, Miami, New York, and fully remote. Flex Fuels Ambition. The Role We are looking for engineers who are excited to be part of our early story and help us build a diverse and vibrant company. As a senior software engineer you will have the opportunity to work across the entire stack with a focus on the back-end. You will have the opportunity to learn and drive the creation of financial products and experiences to help our customers reach their full potential. You should have a strong sense of ownership and enjoy taking projects from inception to release. As an early employee, you’ll be working with a nimble team of committed and talented engineers and having a large, long-term impact on technical design and engineering culture. We are open to candidates from Canada, the United States, and Colombia. What You’ll Do Ownership over large domains and features related to card processing/issuing, and core ledgering of financial transactions Play a critical role in the development, design, and maintenance of Flex's platform and services. Architect well thought-out services and data models that ensure Flex's continued growth Own problems end-to-end, thinking through everything from api contracts, data, scalability, security, observability, and metrics. Lead by example and mentor engineers in all aspects of planning, development and testing. Be a catalyst for driving best-in-class technology frameworks and tooling while staying engaged with the latest technology trends. Be on call, with the expectation to ability to solve problems and find solutions for the servicing team What You Need Proficiency in NodeJS+Typescript and server design principles. An understanding and interest in architectural patterns for highly available, scalable, low-latency, asynchronous systems Ability to hold yourself and the team to high standards. Strong communication (written and verbal) and interpersonal skills. Ability to provide in-depth evaluation of multiple technical directions and determine tradeoffs of each. Strong propensity to make data-driven decisions on technical architecture and project prioritization. Exposure to modular monoliths and micro-services along with the benefits and challenges they bring. Experience with any cloud based provider like Google Cloud, AWS, or Azure. Four or more years of relevant industry experience with a track record of shipping high-quality products and features at scale. A strong work ethic and are ready to grind Have built and shipped a working project or product, ideally something complex Compensation Additional Information Interested? We'd love to hear from you At Flex, we value passion, determination, and honesty. Even if you don't fully match the job specifics, we encourage you to apply. Unusual career paths and unique skills can help you stand out. We believe diversity drives our success. Join us at jobs@flex.one Why Join Us Build something generational — Capture the full lifecycle of money for ambitious business owners. Work on real money, real risk — Payments, credit, and banking at serious scale. Solve hard problems — AI, underwriting, compliance, and global finance from first principles. True ownership — Small teams, high trust, real accountability. Founder-level exposure — Direct access to leadership, customers, and investors. High bar, high taste — Move fast without cutting corners.