Proximity Learning, Inc.

Ruby On Rails Lead Developer

Austin, TX, US

25 days ago
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Summary

Role Overview


As a Senior Rails Developer and Code Reviews Lead, you will:

  • Architect and implement new features in Ruby on Rails (7+).
  • Champion code quality by leading and performing thorough peer reviews.
  • Establish and enforce best practices, style guides, and automated tooling.
  • Mentor mid- and junior-level engineers and evangelize continuous improvement.


Key Responsibilities


Feature Development:

  • Design, develop, test, and deploy critical enhancements and integrations using Rails, MySQL, Redis, and background jobs (Sidekiq/ActiveJob).


Code Review Leadership

  • Own our pull-request review process
  • Provide actionable feedback on design, readability, performance, and security
  • Triage and coordinate review queues to maintain high engineering velocity


Best-Practice Evangelism

  • Define and maintain style guides (Ruby, MySQL, Hotwire, etc.)
  • Keep CI/CD pipelines green; integrate linters, static analyzers, and automated tests


Architecture & Design

  • Participate in system-level design discussions and decisions (services, micro services, APIs)
  • Identify and refactor technical debt
  • Ensure high performance, scalability, and security of Rails applications


Mentorship

  • Pair-program with teammates.
  • Run onboarding sessions for new engineers.
  • Help define personal development plans and track progress


Cross-Functional Collaboration

  • Work closely with Product, QA, DevOps, and UI/UX teams to deliver end-to-end solutions
  • Translate business requirements into technical designs and estimate effort


Required Qualifications

  • 5+ years of professional experience building and shipping Ruby on Rails applications in production
  • Deep understanding of Rails conventions, ActiveRecord, and the Rails request lifecycle, as well as Hybrid Database technologies, specifically MySQL 8+ Hybrid SQL/NoSQL technology
  • oHands-on experience leading code reviews and setting quality standards
  • Proficient with Git workflows (feature branches, rebases, pull-requsts)
  • Solid background in SQL (MySQL preferred), database indexing, and query optimization
  • Familiarity with front-end technologies (JavaScript/TypeScript, CSS frameworks) and API design (REST/GraphQL).
  • Experience working with background job systems (Sidekiq, Delayed Job, etc.) and caching (Redis, Memcached).
  • Strong testing mindset: RSpec, Minitest, Capybara, factory_bot , etc.Excellent communication skills and a collaborative att


Preferred

  • Experience with SLIM, Tailwind, containerization , and cloud platforms (AWS/GCP/Azure).
  • Knowledge of microservices, event-driven architectures, or service meshes.
  • Open-source contributions to Ruby/Rails ecosystem or maintaining popular gems.
  • Familiarity with security best practices (OWASP, Rails security patches)
  • Experience with performance profiling tools (New Relic, Skylight, rack-mini-profiler).

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