26 to 50 of 50 Ruby Jobs in the City of London

My client, a prestigious systematic boutique hedge fund, is seeking a junior Software Developer/Computer Science Graduate to join their London team. This is a rare opportunity to join a forward-thinking firm with a start-up mindset, where More ❯

My client, a prestigious systematic boutique hedge fund, is seeking a junior Software Developer/Computer Science Graduate to join their London team. This is a rare opportunity to join a forward-thinking firm with a start-up mindset, where More ❯

Role: DevOps Engineer Location: London, UK Hybrid Opening (2-3 days onsite) Permanent opening • Bachelor or master's degree in Computer Science or equivalent • Experience in one or more of the following is preferred: Java, Python, Go, Groovy, Perl or More ❯

DevOps Engineer  Bachelor or master's degree in Computer Science or equivalent  Experience in one or more of the following is preferred: Java, Python, Go, Groovy, Perl or Ruby.  Design, implement, and enhance our deployment automation based on Chef and More ❯

Mid Ruby Developer in London/Shoreditch I am currently looking for a Mid Developer to join a stable bootstrap, profitable business based in central London. With a competitive salary of up to £65-70k for an office-based position, they have a great team culture due to their tight-knit and dynamic team. This role has a very … good opportunity for growth! What We're Looking For: Ruby expert: Do you have 3-5+ years of hands-on experience with Ruby Frontend: Proficiency in React, and JavaScript (Nice to have, but they are happy to consider backend focused developers.) Great communication skills - able to work closely in a small team and contribute with new ideas They also More ❯

Engineering Manager - Ruby on Rails - hybrid in London - £110k This full time long term role has just come on the market and is a fantastic opportunity for a friendly, experienced Engineering Manager or Tech Lead who has line management experience You will be supporting the team as they embark on building a new booking engine for their platform and completing … the transition away from .NET to Ruby on Rails version 8, which is well underway. Essentials: Hands-on Ruby on Rails experience in your career is essential as you will be mentoring and helping the backend Engineers to continue improving their skills. You'll be hands-off in the role but still close to the code and involved in technical … conversations, code reviews, stand-ups, etc. 6 direct reports. 4 in London consisting of 2 back end using Ruby & 2 front end using Next.js. 2 backend devs in South Africa who are maintaining the previous system built in .NET whilst the transition to Ruby on Rails is finalised. Hybrid in London, Shoreditch. Ideally 3 days a week in the office More ❯

Senior Product Engineer – HealthTech | London | Up to £110k + Equity Location: Central London (Hybrid, 3 days/week) Salary: £70,000–£110,000 (DOE) + Equity Tech Stack: Ruby, PHP, Python, C#, JavaScript Join a fast-growing HealthTech scaleup that’s already improved the lives of over 1 million patients through innovative fitness, tracking, and subscription-based solutions. Backed by More ❯

end systems development life cycles. Knowledge of computer development software as it relates to systems, such as SQL, Visual Basic, etc. Expertise with any object-oriented programming languages(Kotlin, Ruby etc.) Expertise with Python and Web Applications Education/Experience: Master's degree in computer science preferred. More ❯

and high availability Tech Stack Overview (this isn’t a list of all the things you need, just giving you a good overview of what is on offer) Backend: Ruby on Rails, PostgreSQL, Sidekiq, Redis, AWS Frontend: Turbo/Hotwire, Phlex, AlpineJS, TailwindCSS AI/LLM: OpenAI, Claude, LangChain (or equivalents) Infra: Docker, Terraform, GitHub Actions, CloudWatch What You’ll More ❯

About the Role: In this role, you will play a key part in supporting the client’s High Touch Support operations—designing and maintaining code for both front and back-end programming. The typical full stack developer will be able More ❯

Senior Backend Engineer Contractor (Java/Ruby focused) | Fully Remote/EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length Opportunity: We're supporting a fast-moving client at huge global scale, that is in need of a Senior Backend Contractor with deep experience across Java and Ruby. This is a high-impact freelance role within a … tech-driven established team - building scalable systems in a modern backend environment. What You'll Be Doing as a Senior Backend Engineer Contractor (Java/Ruby focused) | Fully Remote/EU-Based | Rate £550-650pd | Outside IR35 : Designing and building robust backend services across Java, Python, and Rust-based systems Collaborating with product and platform teams to scale critical … infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Ideally, supporting legacy Ruby codebases or integrations where needed Core Skills for the Senior Backend Engineer Contractor (Java/Ruby focused) | Fully Remote/EU-Based | Rate £550-650pd | Outside IR35 : Senior-level backend experience with both Java More ❯

Mid - Senior level Full Stack Ruby developer - React Location: Central London (2 times a month) Salary: £60-80k + Benefits About my client: a profitable SaaS business with a strong foundation and exciting growth prospects. As a long-term client of Opus, they have an low turnover rate within the tech team, with a stable and strong team culture … Role: We are looking for a talented Mid-Level Full Stack Developer with 3-5 years of experience to join their team. You will be working with Ruby and React to develop and enhance our innovative products. Responsibilities: Develop and maintain web applications using Ruby and React. Collaborate with cross-functional teams to define, design, and ship new features. Ensure … the performance, quality, and responsiveness of applications. Identify and correct bottlenecks and fix bugs. Requirements: 6+ years of experience in Ruby development. Proficiency in React. Strong understanding of web development principles. Excellent problem-solving skills and attention to detail. Ability to work in Central London twice a month. Benefits: Enhanced pensions Healthcare Volunteering opportunities Mental health support £500 annual training More ❯

London - Tech for good opportunity! - Health Tech - Senior Product Engineer (Ruby, PHP, Python and C#) Full Stack/Backend - 2 roles available - Up to £100k+ Location: London Hybrid: 3 days About the Company I am working with a new scaleup client in the exciting healthtech space that has helped over 1 million patients to date, with applications in subscription, fitness … Engineers who have scaleup and startup experience, who can go to their office in central London, 3 days a week. They are technology agnostic - considering various backend technologies including Ruby, PHP, Python and C#, with JavaScript on the frontend. They are looking for backend-focused or full-stack developers. They have a very competitive budget of £70,000-110k More ❯

the right way. What we’d like you to bring to the table... You have at least 7+ years experience developing in multiple programming languages and platforms such as Ruby, Java, Python, PHP, Javascript or C# and have a solid understanding of system design and architecture Proven ability to work directly with enterprise customers, translating business requirements into scalable technical More ❯

Junior - Mid-Ruby Developer (Hotwire/Stimulus/Turbo) - up to £60,000 - 3 Roles! 🌟 Fully Remote Ruby on Rails Developer Opportunity 🌟 Are you a Ruby Developer who is interested in using the latest technology with Rails using Hotwire, Stimulus and Turbo? I am currently representing a client who is looking to hire up to 3 developers across Mid - Senior … level! Role: Ruby on Rails Developer Location: Fully Remote Salary: £40-60k What We’re Looking For: 2+ years of Ruby on Rails Expertise: You’ll be working with Rails to build robust, scalable applications. Hotwire, Stimulus, and Turbo Experience: Familiarity with these technologies is essential. Hotwire provides seamless interactivity, Stimulus enhances user interfaces, and Turbo streamlines communication between More ❯

Multiple Remote Engineering Roles – Ruby on Rails | Hotwire | Turbo | Stimulus A fast-growing AI-driven product company is hiring for several long-term, fully remote engineering positions. These roles are ideal for experienced developers located within one hour of Central European Time (CET ±1). The team is building tools used by millions globally and is looking for passionate engineers … to help scale their platform. Open Positions: Senior Backend Engineer (Ruby on Rails) Senior Full Stack Engineer (Ruby on Rails + Frontend) Mid–Senior Frontend-Focused Engineer (Ruby on Rails) What You’ll Work On: Building and scaling user-facing features and backend systems Creating fast, interactive interfaces using Hotwire, Turbo, and Stimulus Collaborating with product, design, and engineering teams … Contributing to architectural decisions and code quality What You Bring: Solid experience with Ruby on Rails (3+ years for mid-level, 5+ for senior) Proficiency with Hotwire, Turbo, and Stimulus Experience working on large-scale applications Strong communication skills and a proactive mindset What’s Offered: 💻 Fully remote work (CET ±1) 📈 Long-term collaboration 💶 Competitive salary up to More ❯

Mid Level Ruby Developer I am currently working with a profitable bootstrapped tech company based near Luton that’s looking for a Mid Ruby Engineer to join their close-knit, collaborative team. This is a backend focused role who will gain a lot of growth opportunities and responsibilities over time as they move their development in house. 🔧 What You’ll … Be Doing: backend development using Ruby Collaborate closely with a small, passionate team Help transition development from an overseas team to an in-house model Play a key role in shaping the company’s tech direction and culture ✅ What They’re Looking For: 3+ years of software development experience , with Ruby on Rails Strong backend engineering skills Excellent communication and More ❯

APIs and integrations with 3rd party vendors. Build new AI agent supporting APIs to help support better interviewing and qualification verification of workers. Migrate complex concepts from a monolithic Ruby on Rails app to standard Indeed service-oriented technology stack(s), typically Java Spring-boot OR Python Django . Fearless of technologies, frameworks, and languages. Drive requirements and display ownership … functionality. Skills/Competencies Demonstrated polyglot ability and an eager willingness to jump into any code base. In particular, familiarity with Python/django, or Java, Spring Boot and Ruby/rails are strongly desired. Any experience in Rust will also be strongly considered. Breaking apart monoliths, utilizing contextually appropriate strategies. Strong communication skills to manage stakeholders and coordinate execution More ❯

Manager who has scaleup and startup experience, who can go to their office in central London, 3 days a week. They are technology agnostic - considering various backend technologies including Ruby, PHP, Python and C#, with JavaScript on the frontend. They are looking for backend-focused or full-stack developers. They have a very competitive budget of £110-140k (negotiable More ❯

Company | Tech For Good, Social Welfare, Product 📏 Size | 200 people 🧢 Role | Product Engineer 🪜 Level | Senior 🎯 Areas | full stack product development, web, AI ✨ Tech | TypeScript, React, Node.js, Ruby, AWS 📍 Based | London (Zone 1) 💻 Hybrid | 2 days a week in-office 💰 Offer | £95-115k + share options Hi 👋 Workonomics are partnering with a tech-for-good company who are building AI More ❯

in cards and credit to a high-growth area with a greenfield mindset What they’re looking for... Strong engineering background with deep experience in backend systems (Python preferred, Ruby/Java/Clojure/Go also considered) Experience working on card-based products — ideally credit, but debit or prepaid also considered Strong architectural and system design skills What’s More ❯

support and manage our trading business. You will cover a wide range of technologies, with recent development primarily in Python and React, but also including other languages such as Ruby and C#. We encourage applicants with other languages to apply as we support learning in the role. The ideal candidate will: Have 1+ years of experience of developing in Python More ❯

would be joining a welcoming and supportive team. You can be part of something bigger too; we host over 15 tech community events including Agile London, JavaScript in London, Ruby in London etc to upskill, engage and network with the tech industry. You can also get involved with Future CodeHers, our school outreach programme aimed at supporting gender diversity in More ❯

a high-performance engineering culture We are happy to consider people without explicit management experience Breadth of experience across infrastructure, backend and frontend technology stacks We use the latest Ruby on Rails, Turbo, Phlex, AlpineJS, TailwindCSS, AWS, PostgresSQL to name a few technologies. OpenAI & Claude for LLM interfacing We are not wedded to them and will rapidly evolve over the More ❯

that has received funding from investors who have backed some of the world's biggest tech companies. They are looking for a Senior/Lead/Staff Engineer with Ruby experience to join their team. They are still a relatively young company but have established great engineering practices and aim to disrupt the Travel industry with its SaaS platform. Role … days a week in the office) Salary: £95-130k (Depends on experience) + Equity + Private Healthcare Start: Immediate start and interview process Requirements: Extensive experience with Ruby Strong background in platform engineering (DevOps, Observability, infrastructure) Familiarity with Rails FE is a nice to have (Hotwire, Stimulus, Turbo - nice to have) Collaborative engineering culture More ❯