Senior Ruby on Rails Engineer (LLM)
OnTheGoSystems
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 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. Want to make a lasting impact on a product used by thousands of real customers? We would love to hear from you. #J-18808-Ljbffr OnTheGoSystems
$188k - $242k
...foundational systems that enable others—engineers, designers, support teams,... ...YOU WILL DO YOUR WORK As a Senior Engineer working on... ...organization include: * Golang, Ruby on Rails, Javascript * MySQL, Redis,... ...and experience integrating LLM-based workflows with structured...RubySeniorRailFull timeCasual workWork at officeLocal area- Fifth Third Bank, N.A. is seeking a Principal Ruby on Rails Engineer to design and implement technology solutions in a collaborative environment. The role includes maintaining core RESTful API and ensuring data security best practices. Qualified candidates will have a...RubySeniorRailRemote job
$167.5k - $211.5k
...right in. Department Platform Engineering Who You Are You are a tooling-... ...golden path templates for Go, Rails, and Vue.js services that bake... ...How You Will Do Your Work As a Senior Developer Experience Engineer,... ...primary), Python, TypeScript, Ruby - whatever fits the problem...RubySeniorRailCasual workWork at officeLocal area$170k - $230k
...Northeast. What We're Looking For We are seeking a skilled Senior Software Engineer to join our team at David Energy. We're looking for... ...least one back-end web framework (e.g., Flask, Django, Ruby on Rails, etc), cloud service (e.g. AWS, GCP), and RDBMS (e.g....RubySeniorRailWork at officeImmediate startRemote workFlexible hours- Feedinkoo is seeking a Software Engineer with professional Ruby on Rails experience to develop on their innovative digital ordering platform. This remote role requires a minimum of 3 years in a web-based production environment, with expectations to maintain stable application...RubySeniorRailRemote jobFlexible hours
- ...Schnittstelle von High-Performance Software Engineering und strategischer IT-Beratung. Wir... ...Kultur: Sie arbeiten in einem Umfeld aus Senior Engineers und Gleichgesinnten. Unser... ...CouchDB, MQTT React, Vue.js, Svelte, Ruby on Rails Docker, Kubernetes BalenaOS, NixOS, Grafana...RubySeniorRailWork at officeRemote work
- ...Schnittstelle von High-Performance Software Engineering und strategischer IT-Beratung. Wir... ...CouchDB, MQTT React, Vue.js, Svelte, Ruby on Rails Docker, Kubernetes BalenaOS, NixOS, Grafana... ...Ein Team aus erfahrenen Expert:innen & Senior Engineers steht immer an deiner Seite,...RubySeniorRailWork at officeRemote work
$130k - $165k
...Job Title: Senior Software Engineer Company: Snapsheet Job Location: USA, Remote Job Type: Full-time, direct hire Job Department... ...more programming languages, with a strong preference for Ruby on Rails and TypeScript. ~ Experience with the following: ~...RubySeniorRailFull timeTemporary workLocal areaRemote workVisa sponsorshipWork visaFlexible hours$175k - $195k
...are looking for an experienced Senior Product Manager to lead the... ...execution in collaboration with engineering and commercial stakeholders.... ...your day‑to‑day work (e.g., LLM‑assisted research,... ...Application stack: NextJS, React, Ruby on Rails, PostgreSQL Workflow and Analytics...RubySeniorRailLocal areaRemote work$180k - $198k
...We are searching for a strong backend engineer to join a small, high-ownership team at... ...Our backend is actively migrating from a Ruby on Rails monolith to a Go microservice architecture... ...) or familiarity with RAG pipelines and LLM-adjacent data architecture. What We're...RubySeniorRailFor contractorsImmediate start3 days per week$115k - $145k
...Beam was founded in 2012 by three engineers who saw the opportunity to modernize the dental... ...members. The Role We are looking for Senior Software Engineers who are not just... ...modern web stack (primarily React and Ruby on Rails, though we value transferable seniority...RubySeniorRailRemote work$100 per hour
Overview Join as a Backend Engineer and help rebuild payments for the >$1tn distribution... ...ERP systems, and leverage cutting-edge LLM technology to transform how distributors... ...strong system design chops Expert-level Ruby on Rails (Rails 7+, Ruby 3+) — our core backend is...RubySeniorRailRemote jobFlexible hours- ...that support multiple product areas. Ideal candidates should have 5+ years of software engineering experience, a proven track record with AI products, and expertise in Ruby on Rails, PostgreSQL, React, and cloud infrastructure. Join a passionate team focused on improving...RubySeniorRailRemote work
$180k - $200k
...support and guidance on infrastructure‑related issues Software Engineering for Operations: Develop and maintain internal tools and... ...Experience supporting production environments running Go or Ruby/Rails applications Tool Development: Ability to write and update tools...RubySeniorRailFor contractorsWork at officeWork from homeFlexible hours- GitLab is looking for a Senior Backend Engineer for their Pipeline Security team, focused on securing sensitive credentials across GitLab pipelines... ...ideal candidate will work on backend code development in Ruby on Rails and Go, and will have a significant impact on the...RubySeniorRail
$150k - $180k
...PRODUCT ENGINEERING — REMOTE Senior Software Engineer / Architect We're looking for a Senior Software Engineer / Architect to join our engineering... ...hands-on background Proficiency with our core stack: Ruby on Rails, React, AWS, and PostgreSQL Proven track record of making...RubySeniorRailFull timeRemote work- ...As a Sales Engineer , you will sit at the critical intersection of engineering, trust and safety, and customer success. You will be... ...is highly preferred. Technical Mastery: Deep proficiency in Ruby on Rails , Next.js , TypeScript , and SQL . Startup Mindset: You are a...RubyRailWork at office
$115k - $145k
Beam Benefits is seeking a Senior Software Engineer to lead code delivery and improve employee benefits access through innovative technology... ...over 6 years of experience, is proficient in React and Ruby on Rails, and is familiar with AI tools to enhance development workflows...RubySeniorRailRemote job- ...technology company in New York is looking for a talented software engineer to join their team. You will engage in enhancing AI-driven... ...over 5 years of experience in web development, proficient in Ruby on Rails, and possesses a strong sense of ownership and passion for...RubySeniorRail
$180k - $210k
Jukebox Health is seeking a Senior Fullstack Engineer to handle end-to-end product features and design, relying on React for front-end and Ruby on Rails for back-end development. This role fosters collaboration with product and clinical teams to simplify complex healthcare...RubySeniorRailRemote job- A leading fashion marketplace is seeking a Senior Software Engineer - Backend to join their team. In this role, you will work on complex problems... ...of experience in backend engineering, proficient in Ruby on Rails and PostgreSQL. Competitive compensation offered. #J-1880...RubySeniorRail
- OrderMyGear (OMG) is hiring a Senior Software Engineer to architect and build web applications. This fully remote role requires 5+ years of experience, strong skills in Ruby on Rails, and a solid understanding of web application architecture. You will collaborate with...RubySeniorRailRemote job
$165k - $180k
...mentoring a team of developers, and ensuring system reliability. Candidates should have 10+ years in software engineering with a strong background in Ruby on Rails, Node.js, and microservices architecture. The position is fully remote, offering a competitive salary...RubySeniorRailRemote job- ...skilled Sr. IT Architect to lead technical teams and oversee open-source IT initiatives. The role demands extensive experience in Ruby on Rails and PostgreSQL, along with proven leadership capabilities. Candidates should have over ten years of experience in software...RubySeniorRail
$170k - $220k
Scan.com is seeking a Software Engineer to architect and build systems that enhance patient workflows and automate operational processes... ...patient services. Ideal candidates will have proficiency in Ruby/Rails, experience with legacy systems, and strong operational...RubyRailRemote jobFlexible hours- ...Position Overview: We are seeking a talented, self-driven, software engineer to join our engineering team and help bring AI to healthcare... ...web development. Have exceptional coding skills, ideally in Ruby on Rails or other similar frameworks/technologies, and experience with...RubySeniorRailHome office
- ...Job Title: Senior Ruby on Rails Development Location: Remote Duration: 6+ Months Contract J ob Summary : As a Software Engineer, you will work on multiple projects per year to solve complex problems and to deliver high quality solutions...RubySeniorRailContract workRemote work
$170k - $210k
...Senior Software Engineer, Frontend About The Role We're hiring a Senior Frontend Engineer to be a technical anchor for our Marketplace... ...Testing: Playwright Observability: Datadog Backend context: Ruby on Rails and Node.js on AWS, with Postgres and MongoDB...RubySeniorRail- Checkmate is hiring a Senior Full Stack Engineer to join their remote team focused on developing innovative web-based restaurant-tech solutions... ...The ideal candidate will have significant experience in Ruby on Rails and React.js, as well as a strong focus on teamwork in a...RubySeniorRailRemote job
$140k - $190k
Recast, LLC is looking for a Senior Software Engineer to join its Apps & API team. You'll work on our marketing mix modeling platform, contributing... ...strong proficiency in Python and familiarity with Ruby on Rails. We're a fully remote team, offering a competitive salary...RubySeniorRailRemote job
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