Senior Full Stack Engineer (backend leaning)

About the Role

Our client is an early-stage, venture-backed fintech startup on a mission to expand access to financial tools for people historically excluded from the traditional credit system. They're growing fast, capital-efficient, and looking for a Backend Engineer to help build and scale the infrastructure powering their products.

This is a high-ownership role for someone who wants to own systems end-to-end, move fast, and lean heavily into AI-assisted development to multiply their output without sacrificing quality.

What You'll Do

• Own backend systems and infrastructure end-to-end, from design through deployment and scaling
• Build performant, reliable APIs and services that power core financial products
• Design and implement scalable architectures on AWS using Node (TypeScript)
• Make pragmatic tradeoffs between speed, reliability, scalability, and maintainability
• Ship production code frequently while maintaining high quality standards
• Help establish technical patterns and best practices for the engineering team
• Interface effectively with product engineers and other stakeholders

What We're Looking For

• Bachelor's degree in Computer Science or a related technical field
• 5+ years of professional software engineering experience, with a significant backend focus
• Experience building and scaling production systems with Node and AWS
• Proficiency with TypeScript strongly preferred
• Track record of delivering reliable, performant systems at scale
• Systems-oriented mindset with a deep focus on performance, reliability, and scalability
• Strong sense of ownership and accountability for system outcomes
• Comfortable thinking critically about architectural decisions and their long-term implications
• Thrives in ambiguity and can make sound technical decisions with incomplete information
• Self-starter who can work independently and drive projects to completion
• Embraces AI-assisted development to accelerate output while maintaining high code quality

What to Expect

• High ownership with minimal bureaucracy
• A fast-moving environment where roles and priorities evolve quickly
• An intense pace of execution and growth — this is not a 9-to-5, work-life-balance-optimized role
• Speed, learning, and impact as core values

Compensation

Salary range of 150-250k USD/year + equity, depending on location and seniority.