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A4AssistΒ·United StatesΒ·remote

Full Stack Engineer

$175,000 - $225,000 Posted 2 days ago
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Ruby on RailsReactTypeScriptHotwire

About the role

What you'll do

  • Architect and enhance a mature Rails monolith with new platform capabilities and scalable improvements.
  • Design and optimize APIs, SQL queries, schema migrations, and background jobs for reliability and maintainability.
  • Build modern web frontends using React, TypeScript, Tailwind, and Hotwire, plus contribute to mobile features with React Native.
  • Own features end-to-end including testing, deployment, monitoring, and iteration in a fast-moving environment.
  • Collaborate closely with product and business stakeholders and help shape engineering culture and technical direction.

What you should know

  • Ideal for engineers with 6+ years full-stack experience, comfortable extending mature production systems.
  • Requires strong backend skills including APIs, SQL, schema design, and job queues.
  • Must be able to navigate ambiguity and independently drive projects forward in a fast-paced startup setting.
  • No visa sponsorship available; candidates must be located in the United States.
  • Opportunity to work on financial technology products with significant ownership and impact.

About the company

  • Operates as a small, fast-moving engineering team focused on mission-critical financial infrastructure products.
  • Values high ownership and technical influence within a fully remote US-based work environment.
  • Targets startup environments and real-world business problem solving rather than just greenfield development.
  • Offers competitive salary plus equity, emphasizing long-term employee investment.
  • Prefers candidates with startup experience or highly cross-functional engineering backgrounds.

Key required skills

Ruby on RailsReactTypeScriptPostgreSQLSidekiq

Summary generated from the original posting.