Senior Ruby on Rails Developer
Senior Ruby on Rails Developer
We are looking for a senior Ruby on Rails developer to help us build reliable, scalable products and apply AI/LLM technologies where they create real value.
This is a hands\-on engineering role for someone who can own complex features end to end, make strong technical decisions, and work across backend architecture, production systems, testing, and AI\-assisted product development.
You should be excited about AI, but pragmatic enough to know when a simple, deterministic solution is better than an LLM call.
What you’ll be working on:* Owning features from technical design to production
- Building and maintaining Ruby on Rails systems used at scale
- Designing AI/LLM\-assisted features and workflows where they improve product quality or user experience
- Working with LLM APIs, prompts, retrieval/context strategies, and AI\-assisted development tools
- Making trade\-offs around performance, reliability, cost, latency, security, and maintainability
- Writing and maintaining automated tests, including unit, integration, and E2E tests
- Debugging production issues and improving system reliability
What we’re looking for:
To succeed in this role, you’ll have:
- Strong professional experience with Ruby on Rails, ideally at senior level
- Experience building and running production systems used by real customers
- Strong backend skills, including databases, API design, performance, background jobs, and security;
- Ability to break down ambiguous problems and propose practical technical solutions
- Hands\-on interest or experience with AI/LLM technologies,
- Good judgment about when to use AI and when simpler engineering approaches are better
- Strong testing habits and care for long\-term code quality
- A responsible, curious, flexible mindset: willing to debug, deploy, investigate, learn, and own outcomes
- Experience with React
- CI/CD, background jobs, or AWS experience
- Experience building AI\-powered product features in production
- Familiarity with embeddings, vector search, RAG, evals, or LLM observability
- Experience with text\-processing, localization, translation, or multilingual products
Why Join OTGS?* Stable \& self\-funded: Founded in 2007, profitable, and independent.
- Industry leaders: Creators of WPML, the \#1 multilingual plugin for WordPress, used on 1\.5M\+ sites
- Fully remote, async\-friendly: Work from anywhere within EMEA hours
- Engineering\-driven culture: Ownership, autonomy, testing, and thoughtful problem\-solving
- Fair compensation and great benefits: Designed to support your well\-being both inside and outside of work.
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