As a Ruby on Rails Developer, you'll work on a production Rails application that includes customer-facing features, internal systems, and external integrations. This is an end-to-end ownership role; you'll take features from design and implementation through testing, performance tuning, and production readiness.
Responsibilities:
- Design, build, and maintain features in a modern Rails codebase.
- Own background and asynchronous workflows, including retries, idempotency, throughput, and observability.
- Model, query, and optimize data storage in PostgreSQL.
- Diagnose and resolve production issues in collaboration with product and support.
- Improve system reliability, performance, and operational safety.
- Contribute to long-term code health through refactoring, testing improvements, security practices, and thoughtful code review.
Technical Stack:
- Ruby and Rails 8.x
- Redis-backed background job systems
- Hotwire, Turbo, Stimulus-style JavaScript, and modern asset tooling such as esbuild and Tailwind-style CSS
- Observability tooling including APM, error tracking, logging, metrics, and rate limiting
- Comprehensive automated testing across unit, integration, and system layers
Requirements
- C1 English proficiency or equivalent.
- Senior-level, hands-on experience building and operating production Ruby on Rails applications.
- Strong background in background job systems and asynchronous processing, with real-world operational experience.
- Experience designing and querying relational data models in PostgreSQL, with attention to indexing and performance.
- Experience building external-facing APIs with authentication, authorization, and rate limiting.
- Strong testing discipline and experience diagnosing flaky or non-deterministic tests.
- A security-minded approach to application design and production operations.
Preferred Qualifications
- Experience working at high-growth startups.
- Experience building products using LLMs or LLM-based agents (LangChain experience is a plus).
- Experience training AI models: building and cleaning datasets, setting up training pipelines, and evaluation benchmarks.
- Experience building code generation or code editing tools.
- A team-player mentality with a track record of influencing and improving development processes.
Nice to Have: Email and Deliverability Domain
- Experience with the Xero or QuickBooks APIs.
- General bookkeeping or accounting domain knowledge.
- Comfort using AI-assisted development tools responsibly, while maintaining strong engineering judgment, code quality, and test coverage.
Benefits
- Compensation: $5,000–$7,000 USD/month, based on experience.
- PTO: Unlimited
- Holidays: U.S. or local holidays observed.
- Fully remote, contractor engagement.
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