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Jobs · Engineering · Florida

Senior Rails Engineer -- Fintech Platform (Thoughtful Applications Only -- Cover Letter Required)

Topkey · Miami, FL · 14 mo ago
HybridEngineering$110/hrFull-time

About the role

Own features end-to-end in our Rails monolith (Rails 8+, Ruby 3.x)
Build rich, reactive UIs with Hotwire/Turbo, Stimulus, and Tailwind CSS
Integrate with external APIs (Plaid, Stripe, Unit, etc.) securely and robustly
Use large context LLMs (Claude, Gemini, ChatGPT, etc.) to accelerate coding, QA, and spec writing
Participate in architecture discussions -- help us evolve our beautiful monolith
Work closely with product and founders to take specs from prototype to prod
Ship daily/weekly, review critically, and treat AI as a multiplier—not a replacement for good judgment (BTW, include the phrase 'beautiful monolith' in your application to show you've read this far)
Optimize performance, reliability, and scalability of our core platform
Act as your own pair programmer—debugging, prompting, reviewing AI-generated code for quality (the eng team will also review, but the initial onus is on the contributor)

Responsibilities

  • 5+ years building production-grade Rails applications
  • Deep expertise in Ruby, Rails conventions, background jobs, and service objects in a growing monolith
  • A reflexive approach to using AI in specs, code, QA, testing, and documentation
  • Strong front-end chops: Stimulus/turbo/hotwire, components, etc.
  • Experience designing and consuming REST APIs
  • Solid SQL skills (PostgreSQL) and an eye for data modeling
  • Track record writing maintainable test suites (RSpec) and CI pipelines
  • Comfort working autonomously and asynchronously in a high-trust, high-output team
  • Previous fintech or payments or accounting experience
  • Familiarity with Plaid, Stripe, or similar
  • Experience with observability tooling (NewRelic, Honeybadger, etc.)
  • Open-source contributions or personal projects you’re proud of
  • Contributions to open-source or side projects involving AI/LLMs

Requirements

Applications without a personalized cover letter will not be considered
Generic or AI-generated applications will be automatically rejected. We're looking for engineers who are passionate about Rails - when applying, mention your favorite gem and a brief reason why.
We value authentic communication and want to hear YOUR voice

Qualifications

  • 5+ years building production-grade Rails applications
  • Deep expertise in Ruby, Rails conventions, background jobs, and service objects in a growing monolith
  • A reflexive approach to using AI in specs, code, QA, testing, and documentation
  • Strong front-end chops: Stimulus/turbo/hotwire, components, etc.
  • Experience designing and consuming REST APIs
  • Solid SQL skills (PostgreSQL) and an eye for data modeling
  • Track record writing maintainable test suites (RSpec) and CI pipelines
  • Comfort working autonomously and asynchronously in a high-trust, high-output team
  • Previous fintech or payments or accounting experience
  • Familiarity with Plaid, Stripe, or similar
  • Experience with observability tooling (NewRelic, Honeybadger, etc.)
  • Open-source contributions or personal projects you’re proud of
  • Contributions to open-source or side projects involving AI/LLMs

Skills

  • PostgreSQL
  • Ruby
  • Ruby on Rails

Benefits

  • Generous PTO and paid holidays
  • Equity in a high-growth startup
  • Generous professional development stipend
  • Home-office setup budget
  • Health, dental, and vision insurance (U.S.) + 401(k) match

Pay

Competitive, commensurate with experience

Schedule

Remote-friendly

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