Senior Software Engineer (Full-Stack)

Found is building tools to support the self-employed workforce in the United States. They are seeking a Senior Software Engineer to work on customer-facing features, enhance technical practices, and mentor other engineers across product teams.

Responsibilities:

• Build and iterate on customer-facing features in our core product — banking, tax automation, and expense tracking — using Ruby on Rails, React, Redux, and TypeScript
• Work across the stack: backend APIs, data modeling in MySQL and Spanner, and polished frontend experiences
• Partner with product and design to go from idea to shipped feature quickly, with a high bar for quality
• Own your work end-to-end — you'll be involved in scoping, building, reviewing, and monitoring
• Raise the technical bar through code review, architecture input, and honest, constructive feedback
• Help establish patterns and conventions that make the codebase easier to work in over time
• Identify and address reliability, performance, or scalability issues before they become incidents
• Contribute to reducing tech debt in a way that's practical, not theoretical
• Act as a technical mentor and thought partner for senior engineers across teams
• Collaborate closely with engineering managers on technical planning, scoping, and team health
• Help engineers grow through pairing, code review, and design conversations
• Model what great engineering looks like: clear thinking, clean code, and good judgment under ambiguity

Requirements:

• 12+ years of full-stack engineering experience, with strong backend fundamentals
• Production experience with Ruby on Rails or a comparable framework, and comfort in React/TypeScript on the frontend
• Experience working with relational databases at scale (MySQL, Spanner, or similar)
• A track record of working across multiple teams or functions, building relationships and get alignment
• Strong communication skills: you can explain technical decisions clearly to engineers and non-engineers alike
• High standards for code quality and a habit of leaving things better than you found them
• Experience in FinTech, financial services, or products with complex compliance requirements
• Background as a tech lead, architect, or informal team leader
• Experience driving engineering-wide initiatives such as standards, migrations, platform improvements