Mozilla

Why Mozilla ? Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people. The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms. What you’ll do: Design, build and implement security and hardening features for enterprise users: Design, implement, test, and ship cutting-edge security features that strengthen Firefox’s security posture. Advance Firefox’s security architecture across multiple operating systems: Contribute to and drive cutting-edge improvements to Firefox’s core security posture, by building privilege isolation and moving trust boundaries or Strengthen Firefox’s security architecture: Improve Firefox’s core security mechanisms including cryptographic protocols, WebPKI, and security-sensitive web APIs. Contribute to our security initiatives: Work across teams to investigate security issues, identify root causes, and deliver robust, maintainable fixes. Improve browser reliability and performance: Diagnose and resolve issues affecting stability, correctness, performance, and memory usage in a complex, multithreaded environment. What you’ll bring: Systems programming experience and security knowledge: 3+ years of experience in low-level software engineering, strong proficiency in C and/or C++, and a solid understanding of security fundamentals. Debugging and problem-solving skills: Experience diagnosing and resolving issues in multithreaded, cross-platform native applications, including memory and performance challenges. Web platform and modern systems experience: Familiarity with web technologies (HTML, CSS, JavaScript) and interest or experience in Rust; ability to work effectively within large, complex, multi-language codebases. Effective collaboration and communication: Experience working with distributed teams and communicating technical ideas clearly in writing and conversation. What you’ll get: Generous performance-based bonus plans to all eligible employees - we share in our success as one team Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute) Quarterly all-company wellness days where everyone takes a pause together Country specific holidays plus a day off for your birthday One-time home office stipend Annual professional development budget Quarterly well-being stipend Considerable paid parental leave Employee referral bonus program Other benefits (life/AD&D, disability, EAP, etc. - varies by country) About Mozilla Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online. Commitment to diversity, equity, inclusion, and belonging Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions. We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at hiringaccommodation@mozilla.com to request accommodation. We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis cove

Why Mozilla ? Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people. The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms. About this team and role: Mozilla is looking for an Incident Responder to monitor and mitigate attacks across Mozilla’s products and services. In this position, you will be a part of a flexible team responsible for handling security incidents. As such, you’ll need to have years of practical security experience and knowledge of the state of the art for detecting and responding to attacks. You’ll be someone Mozillians across the company depend on and trust to respond quickly and effectively in a crunch, with the outstanding communication and collaboration skills needed to work in partnership with diverse stakeholders. Most importantly, you will become a critical member of the team responsible for ensuring the integrity of Mozilla’s products and for keeping Mozilla’s users safe, within a company dedicated to building a more secure internet. What you'll do: Identify and respond to security incidents on a global scale. Act as an incident commander to drive incidents through the entire response lifecycle. Design and maintain a portfolio of security alerts, automated actions, playbooks and escalation workflows in support of a high-performing 24/7 incident response capability. Conduct threat hunting activities, anticipate future threats, and maintain forward-thinking strategies for tools/technology/processes that combat sophisticated threat actors. Research threat intelligence reports, triage and manage resulting workflows. Partner with key stakeholders and communicate effectively to maintain a continuously improving feedback loop of preparation, identification, analysis, containment, and post mortem activities. Participate in on-call rotation. What you'll bring: 5+ years of demonstrated ability managing security incidents at a global scale and/or experience working in Security Operations Centers (SOC), Product Security Incident Response Teams (PSIRT), and Computer Security Incident Response Teams (CSIRT). Expertise with security information and event management (SIEM) systems (eg. ELK, Google BigQuery, Splunk, etc.). Splunk proficiency is preferred. Expertise with endpoint detection and investigation. Hands-on experience with leading EDR tools and demonstrated ability to leverage endpoint telemetry to find root cause. Expertise with security orchestration and automation (SOAR) platforms such as Tines or Splunk SOAR. Superb communication and leadership capacity; ability to partner effectively with diverse company stakeholders. Real-world experience in software development and/or engineering operations for consumer products and services; B.S. in a technology-focused field is helpful. Practical experience working with cloud technologies (eg. Google Cloud Platform, Amazon Web Services, Heroku, Microsoft Azure, etc.). Competencies: Ownership and Accountability Autonomy High Level of Integrity Clear Communication Creative Problem Solver Passionate about Security What you’ll get: Generous performance-based bonus plans to all eligible employees - we share in our success as one team Rich medical, dental, and vision coverage Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute) Quarterly all-company wellness days where everyone takes a pause together Country specific holidays plus a day off for your birthday One-time home office stipend Annual professional development budget Quarterly well-being stipend Considerable paid parental leave Employee referral bonus program Other benefits (life/AD&D, disability, EAP, etc. - varies by country) About Mozilla Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online. Commitment to diversity, equi

Why Mozilla ? Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we're shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we're doing this while never losing our focus on our core mission – to make the internet better for people. The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren't beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms. About this team and role: Mozilla Finance is responsible for strategic resource allocation, overseeing day-to-day financial operations as we scale our mission impact with new and existing products, technology, and business models. Core Services brings together the functions Mozilla runs on: Legal, People, Data Science, Trust & Safety / Customer Experience, Strategy, IT, Cloud Engineering & Ecosystems, and Security - teams supporting every part of the Company. We are seeking a detail-driven Senior Financial Analyst, Core Services to execute the recurring planning, reporting, and analysis that supports this portfolio. This role will be responsible for preparing the forecast, reconciling actuals through close, maintaining headcount and vendor tracking, and producing the reporting that reaches budget owners and the COO. This role reports to the Finance Manager, Core Services, who leads business partnership with the functional leaders, and works closely with teams across the organization. To succeed, you will need to work accurately across a broad portfolio, translate variances into explanations a non-finance audience can act on, and balance competing cycle deadlines with outstanding attention to detail. This position requires a resourceful self-starter who takes recurring processes from start to finish and improves them along the way. What you'll do: Prepare the Core Services forecast each cycle. Build and load cost center detail in Pigment, validate inputs, reconcile against the prior cycle, and document what moved along with the drivers behind it. Assemble the monthly budget update. Prepare variance to plan, drivers, and open items for budget owners and the COO, ready for the Finance Manager to carry into leader conversations. Partner with Accounting through monthly close. Tie out actuals, accruals, and forecast, and resolve coding and timing issues at the source rather than correcting for them downstream. Maintain headcount tracking. Keep position-level tracking and the headcount-to-plan bridge current, coordinating with People and hiring managers on start dates and backfill assumptions. Track vendor and cloud spend. Monitor POs, commitments, renewals, and run-rate changes across the group. Take in cloud cost information prepared by the Cloud Engineering team, carry it into Core Services and consolidated Company reporting, and review it for anomalies and initial questions. Apply AI and automation to recurring work. Identify opportunities to reduce manual effort across the forecast, close, and reporting cycle, improving the speed and reliability of what the team produces. Experiment with tools and share what works. Support Core Services teams day to day. Field data and reporting questions directly, escalating items that call for a partnership discussion. What you'll bring: Core Experience 5+ years of work experience in business unit FP&A, corporate FP&A, strategic finance, or a comparable analytical finance role, including hands-on work through a full budget and forecast cycle with close and variance analysis. Bachelor's degree in Finance, Accounting, Economics, or another quantitative field, or equivalent experience. Technical Skills Advanced spreadsheet and financial modeling skills. You care about formula cleanliness, auditability, and accuracy. Experience with enterprise planning tools (Pigment, Adaptive, Workday, etc.) and accounting systems (NetSuite preferred). Grounding in accounting fundamentals, including accruals and the monthly close cycle. Enough familiarity with cloud cost or FinOps concepts to interpret reporting prepared by a technical team and question what looks off. Interest in applying AI, automation, and systems thinking to reduce manual effort in recurring finance work. Ability to balance multiple competing priorities and cycle deadlines without loss of accuracy. Communication & Collaboration Excellent written and verbal communication skills, including the ability to explain a variance concisely to a non-finance audience. Ability to

The role You will take on the ongoing maintenance and engineering work in Firefox’s Graphics area (rendering, compositing, images, canvas, WebGL). You help keep the graphics code healthy. Responsibilities Own day-to-day Graphics maintenance: bug fixes, regressions, test upkeep, incoming issues. Diagnose and fix graphics problems across platforms (Windows, macOS, Linux, Android). Carry code review and routine upkeep so the FTE engineers can focus on performance. Definition of done A healthy Graphics area, backlog and regressions kept down, with the team’s senior engineers freed to focus on performance. Required qualifications Strong C++ and/or Rust. Knowledge of graphics frameworks and GPU architecture. Strong debugging and optimization in a multithreaded codebase. Able to work independently and lead technically in a large, mature codebase. Preferred Shader languages; mobile/Android; open-source collaboration. Hiring Ranges: Canada Tier 1 Locations $145,800—$186,172 CAD Canada Tier 2 Locations $131,400—$154,600 CAD

You will take on the ongoing maintenance and routine engineering work in Firefox’s Layout area (CSS, page layout, APZ, text, images). Working independently at a tech-lead level, you keep the Layout code healthy. Responsibilities Own day-to-day Layout maintenance: fix bugs and regressions, keep tests green, handle incoming issues. Diagnose and fix Layout problems across platforms (Windows, macOS, Linux, Android). Carry code review and routine upkeep so the FTE engineers can focus on other mission critical projects. . Join planning and standards / web-compat meetings as needed. Definition of done A healthy Layout area, backlog and regressions kept down, with the team’s senior engineers freed to focus on critical Performance and Security issues. Required qualifications Strong C++ (JavaScript and/or Rust a plus). Solid CSS and page-layout knowledge. Strong debugging and optimization in a multithreaded codebase. Able to work independently and lead technically in a large, mature codebase. Preferred Prior experience in web browser architecture and development. Prior Web standards experience. Mobile web development, profiling and debugging skills a plus. Proven experience in utilization of AI tools (Claude, ChatGPT, etc.) in the investigation, development, debugging, and/or testing of code is a plus. Hiring Ranges: Canada Tier 1 Locations $185,045—$217,700 CAD Canada Tier 2 Locations $131,400—$154,600 CAD