Full Stack Engineer

Senior Full-Stack Engineer (Rails Monolith React)

Location: Remote (U.S.)

About Our Client

Our client builds software that powers mission-critical construction lending workflows. The platform is mature used by real customers and sits at the intersection of complex operational processes payments approvals and data accuracy. This team values pragmatic builders who can ship iterate and improve legacy systems without breaking what already works.

The Role

Our client is hiring a Senior Full-Stack Engineer who has shipped and maintained production applications someone comfortable moving across database design API development backend architecture and front-end product work.

Youll help define and build new platform capabilities on top of a 6-year-old Rails monolith improving and extending it with modern patterns while balancing speed quality and business constraints.

What Youll Do

• Collaboratively define scope and architect new platform capabilities on top of a mature Rails monolith
• Extend and improve legacy systemsadding payments integrations and new features in a way thats seamless secure and scalable
• Work directly with databases: write/optimize SQL design schema migrations and ensure API payloads are efficient and well-structured
• Build and maintain web features using React Hotwire TypeScript Tailwind (and potentially mobile-facing work in React Native)
• Manage background processing and system reliability using Sidekiqtaking a pragmatic approach to infrastructure without overbuying vendor tooling
• Identify fragile legacy implementations and propose practical migration paths that balance engineering quality with business reality
• Help establish engineering culture conventions and development practices as the team scales
• Communicate proactively in a fully remote high-velocity environmentthinking out loud asking the right questions and collaborating through conversation

What Our Client Is Looking For

Required

• 6 years of professional full-stack engineering experience (exceptional 45 years considered)
• Strong Ruby on Rails experience including working inside a mature monolith
• Comfortable working across backend frontend with strong product instincts
• Solid database fundamentals: schema design migrations query optimization and API efficiency
• Experience building reliable systems: background jobs queues retries and failure handling (Sidekiq or similar)
• Clear communicator who thrives in ambiguity and can reason out loud

Bonus Points

• Experience in construction fintech proptech or any domain requiring deep business learning to build the right product
• Experience with React Native or mobile-adjacent product surfaces
• Experience integrating payments and third-party systems in production

Why This Role

• High-ownership work on a platform that mattersreal customers real workflows real outcomes
• Meaningful engineering challenges: improving a mature codebase scaling reliability and modernizing without rewrite theater
• Strong influence on architecture standards and how the team builds as it grows
• Remote culture that rewards proactive communication and practical execution

Required Experience:

IC