201 to 225 of 261 Permanent Ruby Jobs

Ruby Developer

Location
Greater London, England, United Kingdom
want to work on project’s doing huge social good? Our customer is currently looking for a Senior Ruby Developer who is ready to take on ownership and contribute to the technical architecture and future of the product. You’ll be joining a team of 8 developers who care about … DevOps processes and backend improvements. Other days you could be building new services with CSS & JS. It’s a great role for a senior Ruby Developer who likes variation in their work, That being said if you prefer to just focus on the backend that’s fine as well.. ...

Backend Engineers (Ruby)

Location
Greater London, England, United Kingdom
features and the occasional roast Meet the Team Here at Cleo, we have ~200 Engineers organised into Pillars. Our stack spans a Ruby on Rails monolith, a single React Native (TypeScript) app frontend, Python for machine learning services, and PostgreSQL, all hosted on AWS and shipped through Kubernetes - backend goes … engineers, designers, analysts, and other disciplines to build features that improve our users' financial health. Key responsibilities for this role include: Work on our Ruby on Rails monolith, building data models, APIs, and business logic services Collaborate with peers across your squad and pillar, providing technical insight into upcoming work ...

Mid-level Developer

Location
Brighton, England, United Kingdom
without drama, and wants to make a real contribution in a small team. What you'll be doing Build and maintain product features in Ruby on Rails, owning them end to end Work confidently across legacy and modern parts of the application Refactor and pay down tech debt as part … with more than 15 years of history. Some older patterns still exist, but new development is moving in a clear, modern direction. Rails 8.1 Ruby 4.x MySQL 8.x GitHub Actions Cypress end-to-end testing Turbo Literal::Types Service objects, moving towards dry-rb libraries Action Policy Rails Event Store ...

Senior Ruby Backend Engineer — Remote, Ownership

Location
United Kingdom
GitLab is seeking a Senior Backend Engineer (Ruby) to join the Plan: Spec-Driven Development team. You will own backend work across flows, APIs, and data models, using Ruby on Rails, Python, PostgreSQL, and related AI gateway technologies. You’ll collaborate with a distributed team in an all-remote environment ...

Platform Engineer: CI/CD & Infra Automation

Location
Greater London, England, United Kingdom
cloud-based agent tools and helping teams adopt effective practices. Our tech stack AWS, Terraform, Terragrunt, Ansible, Jenkins, Docker, ELK, ClickHouse, MongoDB, PostgreSQL, and Ruby-on-Rails. What we’re looking for Experience developing and maintaining complex CI/CD workflows. Software development experience, such as building internal tools, APIs … another cloud provider. Telemetry and monitoring experience (OpenTelemetry, Grafana, Kibana). Strong Computer Science and System Design fundamentals. Willingness to learn and use Ruby and/or Go. What we’d be particularly excited about Experience optimizing CI build times, especially with Jenkins. Experience with Docker or Kubernetes. Experience with ...

Perl Developer

Location
West of England, England, United Kingdom
control such as Git, CI/CD and automated testing Desirable Skills: Experience with Selenium WebDriver or other web automation software Knowledge of Java, Ruby or Python, or a willingness to develop these skills Understanding of financial data services, data acquisition or service integration Strong analytical, fault-finding and problem … learning and knowledge sharing Involvement in projects supporting global financial institutions and third-party integrations Opportunity to contribute to additional development projects using Java, Ruby or Python #J-18808-Ljbffr ...

Senior Backend Engineer (Remote) – UK

Location
City Of London, England, United Kingdom
working code: We primarily work with React on the frontend and Kotlin microservices with Postgres on the backend, with some older services written in Ruby on Rails. We’ve always got an eye open to assess new technologies that might improve our stack. Deploy and iterate: We release frequently … looking for people who have incredible potential. Technical expertise with at least one programming language (we use Python, Kotlin and a bit of Ruby), and ideally experience with relational databases. Proven track record – You’ve made a demonstrable impact in your previous roles, standing out from your peers. Highly driven ...

Intermediate Software Engineer @ Hnry

Location
Greater London, England, United Kingdom
Zealand Bonus points Experience building large scale systems Experience being self-employed (freelancing, contracting etc) in any industry/profession Experience using Ruby on Rails How we work We follow agile practices, delivering improvements iteratively in small chunks. We track the impact of our work and measure ourselves on results … robust platform. In some areas of the work (e.g. payment processing) there is very little margin for error. Our technology platform is built in Ruby on Rails, and we also use a bunch of AWS services (via Terraform), Postgres, Docker, and a little bit of React. We have automated tests ...

Senior Product Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
autonomy in how you get there. We value results over process. Work across the full stack: React Native/Web front ends, Ruby/Rails and TypeScript services, AWS infrastructure, and the data underneath — moving to wherever the problem lives. Spend real time with stakeholders: sit with operations, join customer … scalable, mission-critical production applications. Experience building LLM-powered product features: retrieval, tool use, agent workflows, evaluation and observability of model output. Familiarity with Ruby/Rails, React, Federated GraphQL, Kafka, Kubernetes, Docker, microservices, and NetSuite. Experience in logistics, supply chain, marketplace, or other operations-heavy products. Design sensibility: comfortable ...

Senior Product Engineer

Location
Greater London, England, United Kingdom
autonomy in how you get there. We value results over process. Work across the full stack: React Native/Web front ends, Ruby/Rails and TypeScript services, AWS infrastructure, and the data underneath — moving to wherever the problem lives. Spend real time with stakeholders: sit with operations, join customer … scalable, mission-critical production applications. Experience building LLM-powered product features: retrieval, tool use, agent workflows, evaluation and observability of model output. Familiarity with Ruby/Rails, React, Federated GraphQL, Kafka, Kubernetes, Docker, microservices, and NetSuite. Experience in logistics, supply chain, marketplace, or other operations-heavy products. Design sensibility: comfortable ...

Backend Engineer (Ruby), Plan: Spec-Driven Development

Location
United Kingdom
# Backend Engineer (Ruby), Plan: Spec-Driven DevelopmentGitLabSalary not statedFull-timeremote· seniorUKrubyrailspythonpostgresgraphqlListed via Jobicy · posted 20 Oct 2026. The application happens there, not on DevConnect.Apply on Jobicy## DescriptionGitLab is the intelligent orchestration platform for DevSecOps. GitLab enables organizations to increase developer productivity, improve operational efficiency, reduce security and compliance risk … mergeable code. You'll own early-stage backend work across the flows, application programming interfaces, data models, and evaluation systems behind this experience, using Ruby on Rails, Python, PostgreSQL, GitLab Duo Agent Platform, large language model application programming interfaces, and an artificial intelligence gateway.You'll join a small, distributed team ...

Full Stack Engineer Ruby on Rails

Location
City, England, United Kingdom
managers, we work closely with the rest of the business to make sure we deliver the most value to our customers. Our stack uses Ruby for most of the backend, with Rails, PostgreSQLand Redismaking up the majority of our core product. We use modern front end tooling, with ES6, Reactand … often as we need to; deployment cycles shouldn’t get in the way of delivering value. About you: We’re looking for an experienced Ruby developer who thrives in small, fast-moving engineering teams. Essential skills: Additionally, You’re humble, you lap up feedback, and you want to learn ...

Senior Developer

Location
Brighton, England, United Kingdom
drama, and is motivated by making a real contribution in a small team. What you’ll be doing Build and maintain product features in Ruby on Rails Contribute to architecture decisions and help evolve the platform over time Work confidently across legacy and modern parts of the application Improve performance … with more than 15 years of history. Some older patterns still exist, but new development is moving in a clear, modern direction. Rails 8.1 Ruby 4.x MySQL 8.x GitHub Actions Cypress end-to-end testing Turbo Literal::Types Service objects, moving towards dry-rb libraries Action Policy Rails Event Store ...

Lead Software Engineer – Hardware Lifecycle

Location
Cwmbran, Wales, United Kingdom
focus on three core products: An installation and deployment app, used by field engineers (mobile). A fleet monitoring cloud application for internal use (Ruby on Rails). A customer fleet administration cloud application (C# .NET and React). Today we have five. Two existing mobile apps need … support, limiting changes to essential maintenance. Design, develop and maintain high-quality software across our tech stack (C# .NET, React, Xamarin/.NET MAUI, Ruby on Rails, Azure, Git). Support our move from a Windows-centric environment to a more platform‐agnostic approach, including Linux. Identify and mitigate technical ...

Lead Software Engineer - Hardware Lifecycle

Location
Cwmbran, Wales, United Kingdom
focus on three core products:An installation and deployment app, used by field engineers (mobile)A fleet monitoring cloud application for internal use (Ruby on Rails)A customer fleet administration cloud application (C# .NET and React)Today we have five. Two existing mobile apps need to be combined and rationalised … support, limiting changes to essential maintenanceDesign, develop and maintain high-quality software across our tech stack (C# .NET, React, Xamarin/.NET MAUI, Ruby on Rails, Azure, Git)Support our move from a Windows-centric environment to a more platform-agnostic approach, including LinuxIdentify and mitigate technical risks, and develop ...

Hybrid Ruby on Rails Developer - Public Sector

Location
Greater London, England, United Kingdom
Darwin Recruitment is partnering with a UK public sector organisation to hire a Ruby on Rails Developer in London. The role is hybrid, offering 80% remote work with 1 day per week on site in London. You will develop features on established Rails applications and help modernise services while ensuring ...

Ruby on Rails Software Engineer — Hybrid, Impactful SaaS

Location
Chester, England, United Kingdom
Booking Experts (BEX) in the UK seeks a Software Engineer to join a product-oriented team. Working full-stack with Ruby on Rails, you will build features impacting thousands of users and help shape architectural decisions. Based near Chester with hybrid working, you will collaborate with Product and Design, optimize ...

Senior Integrations Engineer - Ruby & API Expert

Location
Ruddington, England, United Kingdom
seeking an experienced software engineer to lead complex integration challenges. You will own the design, development, and maintenance of integrations using Ruby, building and consuming REST APIs with JSON and XML, while enforcing strong security with OAuth and Basic Authentication. You will work with Swagger/OpenAPI to design ...

Senior Ruby Integrations Engineer & API Architect

Location
Nottingham, England, United Kingdom
seeking an experienced software engineer with strong hands-on integration experience to design and deliver robust integrations across our platform. You will own complex Ruby-based solutions, design REST APIs, and ensure secure, scalable integration across products. You’ll influence engineering standards, participate in architectural decisions, and mentor teammates while ...

Senior Backend Engineer — Data Health & Retention (Ruby)

Location
United Kingdom
retention, lifecycle management, and schema-change enforcement drives sustainable data growth in a fully remote, distributed environment. You will work with PostgreSQL and Ruby on Rails, shaping scalability features for self-managed customers while collaborating with product, infrastructure, #J-18808-Ljbffr ...

Staff Software Engineer, Code Search

Location
United Kingdom
technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Associate’s Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 8+ … technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python OR Bachelor's Degree in Computer Science or related field AND 7+ years experience in Software Engineering, Computer Science, or related technical ...

DevOps Engineer

Location
Slough, England, United Kingdom
implementing integrations that meet customer needs. As a DevOps Engineer you need to have a background in software engineering with experience in Java, Ruby or Python and experience of development and deployment in public cloud environment such as AWS, Azure and Google GCP. You will execute and automate operational processes … requirements but also to add to our existing broad and diverse knowledge base. Responsibilities Implement integrations requested by customers Develop software in Java, Ruby or Python to integrate with internal back-end systems Perform root cause analysis for production errors, investigate and resolve technical issues Perform root cause analysis ...

Senior Full Stack Engineer - London

Location
Greater London, England, United Kingdom
frontend is React and TypeScript on a custom design system, talking to the backend through a federated GraphQL layer. Services are written in Ruby, Elixir and TypeScript, with Kafka for events, gRPC or JSON for synchronous calls, Postgres, and everything running in Kubernetes. Domain-driven design is at the heart … work: we build fast, but we think about the bounded context first. We’re partway through breaking our Ruby/Elixir monoliths into services. Our mobile apps are native, Swift on iOS and Kotlin on Android, and the APIs you write serve them too. You don’t need Swift ...

Backend Engineer (Mid/Senior), Marketplace Engineering London

Location
Greater London, England, United Kingdom
shipped fast with TDD, DDD, and continuous integration and delivery. We are a Go shop, and while we’re busy migrating away from our Ruby monolith, our stack includes PostgreSQL, MongoDB, RabbitMQ, Redis, gRPC, and Thrift. Everything runs on AWS and Kubernetes, managed via Terraform. Our interview process includes … maintaining scalable backend services. We use Go. If you know it, great. If not, we’ll interview you in your strongest language (Python, C++, Ruby, etc.). We hire for engineering fundamentals, not syntax. In-depth knowledge of relational and NoSQL databases (PostgreSQL, MongoDB, Redis) and experience with message brokers ...