Full-Stack Engineer

About the Role

A seed-stage construction lending fintech is looking for a Full-Stack Engineer with 6+ years of experience to join a small, high-velocity remote team. You'll work across the entire stack — from database schema design and API development to React front-end UI — extending and improving a mature, mission-critical Rails monolith that powers construction lending workflows. This is a hands-on, high-ownership role for a pragmatic engineer who thrives in ambiguity and is genuinely curious about domains outside their own expertise.

Experience in construction, fintech, proptech, or any domain requiring deep business understanding is a strong plus. Visa sponsorship is not available; candidates must have U.S. work authorization.

What You'll Do

Collaboratively define, scope, and architect new platform capabilities on top of a 6-year-old Rails monolith serving mission-critical construction lending workflows

Take ownership of extending and improving legacy systems — adding payments, integrations, and new features in a seamless, secure, and scalable way

Write and optimize SQL, design schema migrations, and ensure API payloads are efficient and well-structured

Develop and maintain web (React, Hotwire, TypeScript, Tailwind) and mobile-facing (React Native) features, ensuring platform alignment

Manage background processing and job queuing (Sidekiq) to ensure system reliability without over-reliance on expensive vendor solutions

Identify where legacy implementations need improvement and propose practical migration paths balancing engineering quality with business constraints

Help establish engineering culture, conventions, and development practices as the team scales

Serve as a technical leader and mentor others on the team

Manage the end-to-end software delivery lifecycle, including testing, release management, and monitoring

Communicate proactively in a fully remote, async-friendly environment — articulate your thinking, ask the right questions, and collaborate through conversation

What We're Looking For

Required (dealbreakers):

6+ years of full-stack software development experience in production environments

Strong proficiency with Ruby on Rails, including extending and maintaining mature monoliths and legacy systems

Experience shipping and maintaining production applications used by real customers

U.S. work authorization — visa sponsorship is not available

Also required:

Proficiency with React, TypeScript, Tailwind, and Hotwire

Experience with mobile frontend development using React Native

Strong SQL and PostgreSQL experience, including schema design and migrations

Experience with background processing and job queues (Sidekiq)

Hands-on experience with payments integrations and related API design, ideally within fintech, proptech, or construction lending

Ability to architect platform capabilities, scope features, and make sound design decisions for scalable systems

Comfort working cross-functionally and communicating problems and solutions clearly

Strong problem-solving skills in ambiguous, fast-moving environments

Compensation & Benefits

Salary: $175,000 – $225,000 USD annually

Fully remote work environment

Location

Fully remote. Preference for California-based candidates with availability during core hours of 10am–3pm MT. The team is headquartered in the Tempe, Arizona area.