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Skills: Ruby on Rails, LLM, Backend Architecture, API Design, Database Management
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At OnTheGoSystems (creators of WPML and PTC), content is a key driver of how hundreds of thousands of people discover, understand, and choose to use our translation and localization products. We’re looking for a Head of …
Skills: Content Strategy, AI Workflow Integration, SEO, GEO, Content Writing
At OnTheGoSystems (creators of WPML and PTC), content is a key driver of how hundreds of thousands of people discover, understand, and choose to use our translation and localization products. We’re looking for a Head of …
Skills: Content Strategy, AI Workflow Integration, SEO, GEO Monitoring, Content Writing
At OnTheGoSystems (creators of WPML and PTC), content is a key driver of how hundreds of thousands of people discover, understand, and choose to use our translation and localization products. We’re looking for a Head of …
Skills: Content Strategy, Copywriting, SEO, GEO, AI Workflow Automation
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Skills: Content Strategy, AI Workflow Integration, SEO, GEO Monitoring, Content Writing
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Skills: AI, LLM, Ruby on Rails, Backend Development, API Design
We are looking for an engineer with practical AI/LLM experience who can build production features in Ruby on Rails. This role is for someone who has worked with AI tools, LLM APIs, prompts, retrieval/context patterns, or…
Skills: AI, LLM, Ruby on Rails, Backend Development, API Design
We are looking for an engineer with practical AI/LLM experience who can build production features in Ruby on Rails. This role is for someone who has worked with AI tools, LLM APIs, prompts, retrieval/context patterns, or…
Skills: AI, LLM, Ruby on Rails, Backend Development, Database Management
We are looking for an engineer with practical AI/LLM experience who can build production features in Ruby on Rails. This role is for someone who has worked with AI tools, LLM APIs, prompts, retrieval/context patterns, or…
Skills: AI, LLM, Ruby on Rails, Backend Development, API Design
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Full-time
Fair Compensation, Well-being Support
Posted 5d ago
Apply by Sep 21
~40 hrs/week
Remote in São José da Laje, Alagoas, Brazil
Responsibilities
The role involves owning complex features from technical design to production and building scalable Ruby on Rails systems. It also focuses on integrating AI/LLM technologies to improve product quality and user experience.
Requirements
Candidates need strong professional experience with Ruby on Rails and a proven track record of running production systems. A pragmatic interest in AI/LLM technologies and a commitment to high code quality through testing are essential.
Full job description
Senior Ruby on Rails Engineer
We are looking for a Senior Ruby on Rails Engineer 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
Nice to have:
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
Fully-remote team, building innovative localization and translation tools.
Industry
Software Development
Company size
51-200 employees
Founded
2007
Headquarters
HK
LinkedIn followers
14,710
OnTheGoSystems builds localization and translation tools. More than 250,000 happy clients trust us and use our products on over 1,000,000 websites. We've been fully remote since 2007 and we're always looking for great developers, supporters and marketers to join our distributed team.
Most of our development team is located in European timezone (Europe, Middle East and Africa). We welcome supporters from all over the world, to provide round-the-clock support for our clients.
Offices: HK, HK
Business DevelopmentWordPressMultilingual ContentInternationalizationLocalizationTranslationWebsite Developmentand SaaSInformation TechnologyWeb Design
Fully-remote team, building innovative localization and translation tools.
Industry
Software Development
Company size
51-200 employees
Founded
2007
Headquarters
HK
LinkedIn followers
14,710
OnTheGoSystems builds localization and translation tools. More than 250,000 happy clients trust us and use our products on over 1,000,000 websites. We've been fully remote since 2007 and we're always looking for great developers, supporters and marketers to join our distributed team.
Most of our development team is located in European timezone (Europe, Middle East and Africa). We welcome supporters from all over the world, to provide round-the-clock support for our clients.
Offices: HK, HK
Business DevelopmentWordPressMultilingual ContentInternationalizationLocalizationTranslationWebsite Developmentand SaaSInformation TechnologyWeb Design