1 to 25 of 65 Permanent Ruby on Rails Jobs in the UK

Ruby on Rails Developer/Senior Ruby on Rails Developer Location: Brighton (Hybrid one day per week in the office) Salary: Up to £100k Working Pattern: 4-Day Week (Full Salary) We're working with an established and profitable SaaS company that has been … reputation in its sector, the business has grown sustainably without external investment, creating a stable and supportive environment for engineers who want to focus on building great products rather than chasing aggressive growth targets. This is an opportunity to join a small, highly collaborative engineering team where your ideas ...

Senior Engineer (Ruby on Rails) is required to join one of our clients, who are transforming the automotive space. You will havedeep expertise in architecting, developing, and scaling full-stack web platforms, particularly within the Ruby on Rails ecosystem. Experienced in guiding cross-disciplinary … decisive, action-oriented approach and a strong ability to align technical direction with business strategy in fast-moving, product-centric environments. Key requirements: Ruby & Ruby on Rails Full-Stack Engineering: JavaScript, TypeScript, React, Hotwire, Stimulus Node.js & React exposure beneficial API Design: REST, GraphQL, external integrations Data ...

leading clients, we are searching for a highly experienced Senior Software Engineer (Ruby & AI Platform) to join their AI Events team. You'll work closely with engineering, product, and design to build the event-driven infrastructure and trigger systems that power automated AI workflows across the software development lifecycle. … Architect systems for high availability, reliability, and throughput, ensuring events are processed effectively at scale Build and maintain production functionality within a large, established Ruby on Rails monolith Influence product and architecture direction by proposing iterative solutions to complex technical challenges across a multi-service environment Collaborate ...

technology that transforms how the world develops software.*Fortune 500 is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune … priority in the year ahead. In this role, you'll go beyond using AI tools and help define how we design, build, and iterate on AI-assisted and agentic CI experiences. You'll set standards for what good looks like across our AI agent portfolio, including how we measure ...

Senior Engineer (Ruby on Rails) is required to join one of our clients, who are transforming the automotive space. You will havedeep expertise in architecting, developing, and scaling full-stack web platforms, particularly within the Ruby on Rails ecosystem. Experienced in guiding cross-disciplinary ...

this The more we automate, the more human judgement matters. AI gives people back time, and we expect them to spend it on the things no model can replicate: conversations, trust, craft and team judgement.We hire to a high bar. You’ll work with people who push you, raise … want every person at Raylo to do the best work of their lives, and enjoy doing it.Our Core Valuesð¡ Be deeply curious – We thrive on innovation through diverse approaches, views, and people.ð Walk in your customer’s shoes – To build the best products and make the best decisions ...

technology that transforms how the world develops software.*Fortune 500 is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune … Media IP Limited are not affiliated with, and do not endorse products or services of GitLab.An overview of this roleAs a Senior Backend Engineer on the Plan: Spec-Driven Development team, you'll help build GitLab's intent-to-code loop: agentic workflows that turn a stated intent into ...

Ruby/JavaScript Web Developer – Rails Fintech 50 Quant Capital is urgently looking for a Ruby/JavaScript Web Developer to join our high profile client.Our client is a brand new investment firm driven by technology. They are well known in the media as solving … people in almost 6 months. As their product is web based this position is key to growth and stability.The position is for a Ruby Web Application Developer to build new and maintain existing Rails applications communicating with a Java API. The developer will be working within an Agile ...

Ruby Developer – Full Stack, Rails Javascript, TDD Quant Capital is urgently looking for a Ruby Developer to join our high profile client.Our client is in this year’s fintech50 they are a disruptive force in the global investment and payments space.The office is casual with a compete … tech focus (quiet coding area, loud games room).The position is for a senior Ruby Developer to build a new Rails application communicating with a Java API. The current team has 5 bleeding edge ruby and frontend developers who need some help to keep them from evangelising ...

Ruby Developer – HTML5, Rails Javascript, TDD Quant Capital is urgently looking for a Ruby Developer to join our high profile client.Our client is in this year’s fintech50 and well known to disrupt the global payments and Foreign exchange markets.The position is for a hands mid level … senior Ruby Developer to build new and maintain existing Rails applications communicating with a Java API. The current team has 5 bleeding edge ruby and frontend developers who need some help to keep them from evangelising the world off. The Ruby Developer will be working within ...

this The more we automate, the more human judgement matters. AI gives people back time, and we expect them to spend it on the things no model can replicate: conversations, trust, craft and team judgement.We hire to a high bar. You’ll work with people who push you, raise … want every person at Raylo to do the best work of their lives, and enjoy doing it.Our Core Valuesð¡ Be deeply curious – We thrive on innovation through diverse approaches, views, and people.ð Walk in your customer’s shoes – To build the best products and make the best decisions ...

Cleo is looking for Senior Engineers II to work on our Ruby on Rails monolith, collaborating with engineers, designers and analysts to deliver features that improve users' financial health. The role emphasizes mentoring, leadership, and delivering with agile practices. You’ll contribute to data models, APIs ...

portions. As a B-Corp certified company, you’re joining a sustainable business that genuinely cares about our people, our products and our impact on the planet. Our goal is simple: to help dogs live healthier, happier, and longer lives, while leaving humans smiling after every interaction.We’ve come … high-quality, maintainable, modular, and reliable code is shipped across our acquisition stack.Heavily Backend-Weighted: Your day-to-day focus will be heavily centered on our backend infrastructure (Ruby on Rails, PostgreSQL, GraphQL) to manage discount APIs, optimise session architectures, and support core functionality. We have ...

Junior Ruby Developer – HTML5, Rails Javascript, TDD Quant Capital is urgently looking for a Junior Ruby Developer to join our high profile client.Our client is in this year’s fintech50 and well known to disrupt the global payments and Foreign exchange markets.The position is for a hands … Junior Ruby Developer to build new and maintain existing Rails applications communicating with a Java API. The current team has 3 bleeding edge ruby and frontend developers who need some help to keep them from evangelising the world off. The Ruby Developer will be working within ...

technology that transforms how the world develops software.*Fortune 500 is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune … they can start using the Duo Agent Platform with minimal friction. The second is repository and background flows: autonomous and scheduled agents that work on a customer's codebase on their behalf.This work is central to how GitLab delivers AI-powered automation on repositories. As a Senior ...

technology that transforms how the world develops software. *Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune … they can start using the Duo Agent Platform with minimal friction. The second is repository and background flows : autonomous and scheduled agents that work on a customer's codebase on their behalf. This work is central to how GitLab delivers AI-powered automation on repositories. ...

expertise. As an equal opportunities employer, we are committed to encouraging equality, diversity, and social mobility, while creating opportunities for our teams to work on meaningful projects that deliver lasting impact.About You:You are a motivated and adaptable professional with a strong analytical mindset and a passion for using … approach, you’re comfortable engaging with clients, understanding their needs, and translating them into effective outcomes. The Role:We are looking for an experienced Ruby Backend Developer to build and maintain scalable, secure, and high-performance backend systems.RequirementsKey Responsibilities:You will part of a professional software engineering team helping ...

expertise. As an equal opportunities employer, we are committed to encouraging equality, diversity, and social mobility, while creating opportunities for our teams to work on meaningful projects that deliver lasting impact. About You: You are a motivated and adaptable professional with a strong analytical mindset and a passion … approach, you’re comfortable engaging with clients, understanding their needs, and translating them into effective outcomes. The Role: We are looking for an experienced Ruby Backend Developer to build and maintain scalable, secure, and high-performance backend systems. Key Responsibilities: You will part of a professional software engineering team ...

expertise. As an equal opportunities employer, we are committed to encouraging equality, diversity, and social mobility, while creating opportunities for our teams to work on meaningful projects that deliver lasting impact. About You: You are a motivated and adaptable professional with a strong analytical mindset and a passion … approach, you're comfortable engaging with clients, understanding their needs, and translating them into effective outcomes. The Role: We are looking for an experienced Ruby Backend Developer to build and maintain scalable, secure, and high-performance backend systems. Requirements Key Responsibilities: You will part of a professional software engineering ...

Team Lead Ruby/Frontend DeveloperQuant Capital is urgently looking for a Lead Frontend Ruby or JavaScript Developer to join our high profile client.Our client is a brand new investment firm driven by technology. They are well known in the media as solving one of the common problems … people in almost 6 months. As their product is web based this position is key to growth and stability.The position is for a hands on Lead Developer to build new and maintain existing frontend applications and sites communicating with a Java API. The current team has 2 bleeding edge ...

technology that transforms how the world develops software.*Fortune 500 is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune … roleYou will engineer security improvements to the GitLab product as well as building and maintaining the tools we use to detect and prevent abuse on our SaaS platforms. A strong software engineering background with experience in large Ruby/Rails codebases is required. As a senior engineer ...

GitLab is seeking a Senior Backend Engineer (Ruby) for the Plan: Spec-Driven Development team. This is a full-time, remote role with work location: UK, focusing on Ruby on Rails, Python, GraphQL, PostgreSQL and related backend systems. You’ll own end-to-end backend ...

working with the developers to understand their implementation of the requirements. Testing and quality is a team effort, but the QA should focus on keeping these standards high in the team.QA Engineer will be part of a development team working through new projects and maintenance tasks. They will have … specific focus on performance and load testing, being able to offer advice, strategy and direction to the test team on these issues. They will be hands on with these tasks and also overseeing this type of testing across the team.The QA Engineer will also be responsible ...

PRINCIPALManchester/London, UKThoughtWorks is synonymous with innovation. We’re a diverse community of bright and passionate individuals striving to have a positive impact on the world. We’re dedicated to the art of software delivery, by keeping it lightweight, agile and open-source. Our clients are organisations with … complex enterprise systems to help them solve their toughest business problems. As a Principal Consultant at ThoughtWorks you have total responsibility for technical delivery on a client engagement so you are likely to have extensive experience.Here’s what you will bring:· Expertise in multiple technologies (including Java, .NET, Ruby ...

role You'll own the backend systems Letly runs on — and the architecture other engineers build on: the software behind every viewing, tenancy, certificate, rent payment and repair. These are systems where correctness, reliability and scale are non-negotiable : real people's money, homes and legal exposure … on the line. This is a senior-to-staff hire. At senior you own systems others build on — you make the architecture calls, set the patterns, and raise the bar around you. At staff you own the technical direction of a domain: you decide what gets built ...