Backend Engineer, Sr. - Remote US

## About the Role Aerostrat is a fast-growing B2B SaaS company developing a maintenance planning solution for the aviation industry. Its core product, Aerros, enables customers to plan maintenance across hundreds of aircraft while understanding operational cost and efficiency and making data-backed business decisions. As a Senior Backend Engineer, you will play a critical role in expanding Aerostrat’s infrastructure and APIs to support continued customer growth. Working within a lean engineering team, you will have significant opportunities to influence product direction, solve complex customer problems, and deliver important features to production. Industry experience in aviation is not required, as the onboarding process provides an opportunity to learn the company’s aviation maintenance planning domain. ## Key Responsibilities * Analyze complex customer problems and translate them into efficient backend solutions.* Design, develop, and maintain scalable backend systems and well-tested features.* Design and implement reliable, high-quality, performant, and sustainable services.* Build and maintain infrastructure and APIs that can scale with customer needs.* Work with business teams to develop user stories and designs from ambiguous requirements or problems.* Contribute to product and technical direction within a lean engineering environment.* Collaborate across the development lifecycle, including design and deployments.* Work directly with customers when developing integrations and solving technical challenges.* Continuously learn and improve the engineering stack and development processes.* Deliver impactful features that address real customer and business needs. ## Required Qualifications * 5+ years of professional experience with C#/.NET.* 5+ years of professional experience working with SQL databases.* 3+ years of experience working with REST APIs.* 3+ years of experience working with Azure or AWS cloud projects.* 3+ years of experience creating technical designs for other engineers.* Significant experience building and consuming REST APIs and microservices.* Significant experience developing B2B cloud solutions using Azure or AWS.* Strong problem-solving skills and an ability to address real customer challenges.* Strong written and verbal communication skills suitable for a remote team.* Self-motivated approach with the ability to work independently in a lean engineering environment. ## Preferred Qualifications * Aerospace maintenance experience or an interest in the aerospace industry.* Experience building B2B SaaS applications. ## Skills & Competencies * C#* .NET* SQL* SQL Server* REST APIs* Microservices* Azure* AWS* B2B SaaS* Cloud Application Development* Backend Software Engineering* Scalable Systems* API Design* Technical Design* System Performance* Software Testing* Customer Problem Solving* Technical Communication* Product Collaboration ## Education & Experience * 5+ years of experience with C#/.NET.* 5+ years of experience with SQL databases.* 3+ years of REST API experience.* 3+ years of Azure or AWS cloud project experience.* 3+ years of experience creating technical designs for other engineers.* No specific degree or educational qualification is stated in the source description. ## Work Arrangement & Schedule * Location listed: Costa Mesa, CA, US.* Work Arrangement: Fully Remote.* Remote preference: Within 50 miles of Seattle, WA preferred.* Employment Type: Full-time.* Schedule: Monday–Friday, normal business hours.* Flexible working hours are offered. ## Compensation & Benefits * Salary: $140,000–$200,000 per year.* Unlimited PTO.* 11 paid holidays per year.* Multiple health insurance options.* HSA option with employer contributions.* 401(k) with company matching.* Flexperks to help cover work-from-home expenses, cell phone, and internet.* Travel discounts through the corporate travel provider.* Annual team retreats.* Fully remote work designed to reduce commute time. ## Compliance / Additional Informati