Principal Back End Engineer (Ruby/AWS/Postgres/Redis) Hybrid (UK – Remote-first with London office) £95k - £120k + Benefits Albany Growth are partnering with a high-growth UK-based SaaS company backed by recent investment and now ready to scale their engineering team with 2 senior hires. They are now hiring a Principal Engineer to drive … backend excellence across a complex, high-availability platform used by global customers. This is a hands-on senior leadership role with significant influence across engineering standards, architecture, and mentorship. You'll work across a modern Ruby-based stack, and play a key role in scaling platform infrastructure and guiding technical decisions that impact millions. Key Responsibilities Lead the … to the technical and professional growth of the wider team Own features from concept to production, balancing architectural integrity with delivery pace Collaborate closely with product and engineering leadership on roadmap planning and system evolution Contribute to compliance-focused, change-controlled deployments with high DORA metrics (elite-level performance) Continuously improve tooling, observability, and infrastructure to support scalable growth More ❯
the platform - not just build it. You'll have a real voice in technical decisions, mentor others, and engage directly with customers to build tools they love. Tech Stack: RubyonRails, React, React Native, GraphQL What You'll Be Doing: Build and maintain fullstack features using Rails and React Native Lead architectural decisions and technical … Mentor junior engineers Talk directly to users and stakeholders to understand real-world needs Continuously improve team practices and product quality What We're Looking For: Strong experience with RubyonRails or similar Back End frameworks Proficiency in React and/or React Native GraphQL Excellent communication and collaboration skills Independent and proactive problem-solver Comfortable More ❯
hackajob on-demand focuses on matching talented contractors like you with organisations seeking specific skills for their projects. We use our platform to connect you with exciting contract opportunities and discuss projects on behalf of the companies we partner with. Job Title: Fullstack Engineer Location: Remote – UK (Ideally based in London) Contract Duration: 12 months (with potential … 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 RubyonRails app to standard Indeed service-oriented technology stack(s), typically Java Spring-boot OR Python Django . Fearless of technologies, frameworks, and languages. Drive requirements … 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 More ❯
hackajob on-demand focuses on matching talented contractors like you with organisations seeking specific skills for their projects. We use our platform to connect you with exciting contract opportunities and discuss projects on behalf of the companies we partner with. Job Title: Fullstack Engineer Location: Remote – UK (Ideally based in London) Contract Duration: 12 months (with potential … 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 RubyonRails app to standard Indeed service-oriented technology stack(s), typically Java Spring-boot OR Python Django . Fearless of technologies, frameworks, and languages. Drive requirements … 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 More ❯
London, England, United Kingdom Hybrid / WFH Options
PlayerData
self-starters. We like to be pragmatic about solving the user problem rather than endless technical discussions & research. ● ...like to ship often. We’ve spent a lot of effort on making our developer tools best in class. We've removed the toil so you can get on with writing and deploying code. ● ...are curious about the “why?”. … they think solves the user problem. To do that well, they understand why we’re building something. What you'll do: ● Develop quality software across our stack, mainly in Ruby-on-Rails and React Native. ● Collaborate regularly with Product, Design, and Customer Success teams. ● Lead technical and architectural decisions. ● Document your work clearly and thoroughly. ● Mentor and … support junior engineers. ● Engage directly with customers and stakeholders. ● Improve our processes through feedback, testing, and continuous learning. You should apply if: ● You have extensive experience with RubyonRails or similar frameworks. ● You know your way around React/React Native. ● You're proactive, enjoy mentorship, and aren’t afraid to challenge assumptions. ● You prefer practical More ❯
of complex systems. Calmed down product teams with confident decisions made under pressure. But maybe now, you’re looking for something more . A place where you can: ✅ Work on a product used by over 30 million people globally ✅ Take a strategic seat at the table , working alongside engineering and product leaders ✅ Guide multiple squads through architectural decisions and … technical challenges ✅ Leave your mark on how software is built — and on who builds it The mission? To make healthcare simpler and more accessible through beautifully designed SaaS products. You’ll help shape the platform and its future, influencing tech strategy, engineering culture, and delivery at scale. You’ll join a remote-first team (UK-based, with quarterly … delivering changes to production over 100 times a month . Speed and safety go hand in hand here — supported by a mature, CI/CD-first mindset. The Tech Ruby , Rails , Ember , JavaScript , Postgres , AWS With exposure to Node.js , TypeScript , C# , and .NET in other squads And emerging AI tooling already being trialled across the organisation What you More ❯
London, England, United Kingdom Hybrid / WFH Options
AG Talent
sense of complex systems. Calmed down product teams with confident decisions made under pressure. But maybe now, you’re looking for something more. A place where you can: ✅ Work on a product used by over 30 million people globally ✅ Take a strategic seat at the table , working alongside engineering and product leaders ✅ Guide multiple squads through architectural decisions and … technical challenges ✅ Leave your mark on how software is built — and on who builds it The mission? To make healthcare simpler and more accessible through beautifully designed SaaS products. You’ll help shape the platform and its future, influencing tech strategy, engineering culture, and delivery at scale. You’ll join a remote-first team (UK-based, with quarterly … delivering changes to production over 100 times a month . Speed and safety go hand in hand here — supported by a mature, CI/CD-first mindset. The Tech Ruby , Rails , Ember , JavaScript , Postgres , AWS With exposure to Node.js , TypeScript , C# , and .NET in other squads And emerging AI tooling already being trialled across the organisation What you More ❯
to produce high-caliber solutions, you will work with cross-functional teams to design, create, and maintain software applications. Duties Use programming languages like Python, Java, C++, C, and RubyonRails to design and implement software applications. Create and manage APIs to help different systems integrate seamlessly. Work together with designers and product managers to comprehend … and new technology to improve software development procedures. Requirements A solid portfolio of finished projects and demonstrated expertise in software development. Proficiency with Python, Java, C++, C, VBA, and RubyonRails, among other programming languages. Knowledge of best practices and development processes for applications. Knowledge of integrating third-party services into programs and working with APIs. … is recommended; relevant work experience will be taken into account. Come help us shape technology's future with creative software solutions! Benefits Program for Employee Mentoring Parking is free. On-site fitness centre Program for referrals UK visa sponsorship Work from home Date of Closure: July 11, 2025 Disclaimer Scam Warning:Please take note that the employees at will More ❯
London, England, United Kingdom Hybrid / WFH Options
Krebar International
Get AI-powered advice on this job and more exclusive features. Direct message the job poster from Krebar International Strategic Growth & Execution Partner to High-Growth Companies | Leadership Alignment, Scalable Infrastructure & Post-Merger Integration | HR Systems... Our firm is partnering with a global, product-led SaaS company to find an experienced Engineering Lead with deep expertise in RubyonRails . This company offers a remote-first environment and builds a visual content creation platform used by professionals worldwide to create infographics, presentations, and videos—without needing extensive design experience. Their tools are enhanced by AI to accelerate creativity and improve user outcomes. Location: Remote (within EMEA or APAC preferred) Time Zone Requirement: Must have … some overlap with UTC+8 hours About the Role: We’re searching for a strategic and hands-on Engineering Lead to guide the next phase of product innovation. This role is ideal for someone who thrives on both writing clean, scalable code and leading technical direction. You’ll have the opportunity to shape engineering practices, mentor a distributed team More ❯
Are you a hands-on technical leader looking to shape the future of software delivery? Do you thrive in collaborative squads, enjoy working across a modern backend stack, and want to make an impact using Ruby, PHP and AWS? Why this role is great This is a brilliant opportunity to join a fast-scaling tech business that has … talented group of developers, QAs and designers. You will be part of a forward-thinking engineering function where quality, autonomy and clean architecture are valued. The role combines hands-on technical contribution with the opportunity to shape processes and practices. You will: Lead development efforts using RubyonRails and PHP (Symfony), with a strong focus … on object-oriented programming Guide backend infrastructure work using AWS, Terraform and Helm Mentor three direct reports and foster technical growth across your team Contribute to API development, architectural discussions and containerisation efforts (Kubernetes) Collaborate with Product Managers and other Tech Leads to align engineering efforts with business goals About you You are likely an experienced backend developer with More ❯
Support Engineer IV, Payments Acceptance and Experience Tech This job is for Re-kindle Program. Note : For more details on rekindle program, please visit - We enable Amazon Payments build a world class Payments CX and reduce cost of payments. We work side by side with the product family and platform developers to maintain and improve services and performance. We … variety of data collection, enrichment, analytics and visualizations to learn about our complex systems. We believe in "Work Hard. Have Fun. Make History" value by having a strong focus on sharing learning experiences from the front line with the development teams. So, the options for people in the team are vast. If you like mastering a domain and going … responsibilities include troubleshooting, diagnosing and fixing production software issues, developing tools, automation and monitoring solutions, performing software maintenance and configuration, implementing the fix for internally developed code (JAVA and Ruby with Rails), updating, tracking and resolving technical challenges and improving operational excellence and readiness of the systems. Some of the key job functions - Provide support of incoming tickets More ❯
Software Engineering Team Lead - Ruby “I feel like a babysitter, not a team lead.” That’s what one engineer said to us recently. And it stuck. Because too often, "team lead" means shielding your team from chaos without ever getting to shape the direction. This role is different. We’re hiring a Ruby Software Engineering Team Lead to … and set the tone for delivery. What makes this worth your time? You’ll be trusted to run your squad from roadmap to release You’ll still be hands-on, coding alongside your team (but not drowning in it) You’ll be coaching, mentoring, hiring, and shaping both the product and the people You’ll contribute to a real … mission: simplifying healthcare for patients and professionals alike The stack: Ruby, Rails, Ember, AWS Strong CI/CD culture, shipping to production frequently with confidence What you’ll be doing: Leading a cross-functional product engineering squad Supporting career growth, onboarding, hiring, and performance Staying close to the codebase, contributing to major features and architecture Working with product More ❯
London, England, United Kingdom Hybrid / WFH Options
AG Talent
Software Engineering Team Lead - Ruby “I feel like a babysitter, not a team lead.” That’s what one engineer said to us recently. And it stuck. Because too often, "team lead" means shielding your team from chaos without ever getting to shape the direction. This role is different. We’re hiring a Ruby Software Engineering Team Lead to … and set the tone for delivery. What makes this worth your time? You’ll be trusted to run your squad from roadmap to release You’ll still be hands-on, coding alongside your team (but not drowning in it) You’ll be coaching, mentoring, hiring, and shaping both the product and the people You’ll contribute to a real … mission: simplifying healthcare for patients and professionals alike The stack: Ruby, Rails, Ember, AWS Strong CI/CD culture, shipping to production frequently with confidence What you’ll be doing: Leading a cross-functional product engineering squad Supporting career growth, onboarding, hiring, and performance Staying close to the codebase, contributing to major features and architecture Working with product More ❯
London, Hybrid Hnry offers a full digital accounting service for contractors, freelancers, and sole traders that handles... well, everything - automatic tax calculations and payments, invoicing, expenses, tax filings, and on-demand support from our team of accountants. After recently expanding into the UK market, we are looking to hire new engineers to join our team in London. You will … this back to the team for feedback Collaborate with and support other members of the wider Hnry team Act as a mentor and provide support to more junior developers on the team You will Have at least two years experience using Ruby (Intermediate) or four years (Senior) Have exceptional communication and collaboration skills - we work together and succeed … etc) in any industry/profession 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, not the amount of code written. We’re growing fast, and are focused on building a well designed, scalable & robust platform. In some areas of the work More ❯
London, England, United Kingdom Hybrid / WFH Options
Brixton Blog - Big Smoke
through commercial work, and increase our reach in the UK. Why you should work with us We are a top drawer software development team, and we get to work on stuff that matters. Our sites and projects help people to get important things done: holding politicians to account, extracting information from government, and getting streetlights fixed. And as a … mySociety developer you can see the benefits and talk to the users, every day. We’re looking for new developers who will be comfortable working on both charitable and commercial projects, for clients who vary from volunteers (asking for new features) through to big media company clients with high expectations of professionalism. We’re not dogmatic about languages: if … you can work in any of Ruby, Python or Perl you’ll be at home here – we’ll find an interesting project for you. We love Django and Rails, and we’re having fun experimenting with Node.js, canvas, and more. We’re widely geographically dispersed, and a lot of people work from home (although we’re setting up More ❯
London, England, United Kingdom Hybrid / WFH Options
The Thinking Traveller
ll establish and uphold high, modern standards to deliver excellent, relevant tools for our business and our clients. In addition to line management responsibilities, this role also requires hands-on coding. Reports To: Chief Technology Officer Direct Reports: Software Engineers Working Partnerships: Test Automation, Product, Design, Sales, Operations What we do We manage an exclusive collection of luxury villas … decades ago, we’ve experienced a wide range of technology over the last two decades and currently use a mix of systems to meet our needs. Now we’re on a mission to prepare for the future. This is an incredible opportunity to be able to own a lot of the new systems we need. Our new stack uses … Next.js hosted on Vercel, and RubyonRails with PostgreSQL hosted on AWS. Our new systems are developed on a trunk-based repo with CI/CD, and we deploy multiple times per day. The existing team is made up of two frontend and four backend engineers. We also have a Product function responsible More ❯
Join a fast-growing health tech company using AI to solve high-impact, real-world problems. Building tools that help frontline professionals reduce admin and focus on delivering care, my client are looking for engineers who want their code to make a measurable difference. What You’ll Be Building AI-powered web applications (think speech-to-text, smart summarisation … support continuous deployment 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: RubyonRails, PostgreSQL, Sidekiq, Redis, AWS Frontend: Turbo/Hotwire, Phlex, AlpineJS, TailwindCSS AI/LLM: OpenAI, Claude, LangChain (or equivalents) Infra: Docker …/libraries Help productionise AI features (prompt tuning, prompt chaining, LLM orchestration, etc.) What We Look For 5+ years in software engineering, ideally across full stack environments Experience working on complex systems with meaningful scale A bias toward action and pragmatism: you ship working software quickly Strong product intuition and comfort collaborating beyond just engineering Interest in AI/ More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Block MB
Join a fast-growing health tech company using AI to solve high-impact, real-world problems. Building tools that help frontline professionals reduce admin and focus on delivering care, my client are looking for engineers who want their code to make a measurable difference. What You’ll Be Building AI-powered web applications (think speech-to-text, smart summarisation … support continuous deployment 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: RubyonRails, PostgreSQL, Sidekiq, Redis, AWS Frontend: Turbo/Hotwire, Phlex, AlpineJS, TailwindCSS AI/LLM: OpenAI, Claude, LangChain (or equivalents) Infra: Docker …/libraries Help productionise AI features (prompt tuning, prompt chaining, LLM orchestration, etc.) What We Look For 5+ years in software engineering, ideally across full stack environments Experience working on complex systems with meaningful scale A bias toward action and pragmatism: you ship working software quickly Strong product intuition and comfort collaborating beyond just engineering Interest in AI/ More ❯
South East London, England, United Kingdom Hybrid / WFH Options
Block MB
Join a fast-growing health tech company using AI to solve high-impact, real-world problems. Building tools that help frontline professionals reduce admin and focus on delivering care, my client are looking for engineers who want their code to make a measurable difference. What You’ll Be Building AI-powered web applications (think speech-to-text, smart summarisation … support continuous deployment 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: RubyonRails, PostgreSQL, Sidekiq, Redis, AWS Frontend: Turbo/Hotwire, Phlex, AlpineJS, TailwindCSS AI/LLM: OpenAI, Claude, LangChain (or equivalents) Infra: Docker …/libraries Help productionise AI features (prompt tuning, prompt chaining, LLM orchestration, etc.) What We Look For 5+ years in software engineering, ideally across full stack environments Experience working on complex systems with meaningful scale A bias toward action and pragmatism: you ship working software quickly Strong product intuition and comfort collaborating beyond just engineering Interest in AI/ More ❯
party providers Building high-volume pipelines for processing customer energy consumption Build the backend of a world class energy app For this role, you should be able to think on your feet and adapt to new business needs as well as take ownership of projects and drive change. As an early member of the Fuse Energy team you will … cheap electricity to households around the world. Requirements Demonstrable excellence as a Software Engineer Ideally 2+ years experience Proven ability to define and build complex systems Backend experience Hands-on experience operating highly-available production systems Experience with Python Experience with Terraform, CloudFormation, or similar Fast problem-solving and clear communication Bonus RedHat and Infosec Front end/App … development Experience in the Energy sector Experience shipping consumer-facing products Benefits Competitive salary and a stock options sign-on bonus Biannual bonus scheme Fully expensed tech to match your needs! Paid annual leave Breakfast and dinner for office based employees Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Job function Engineering More ❯
center. The Senior Full Stack Software Engineer will be working closely with product managers, data scientists and members of our Care Team to explore, design, prototype, test, and iterate on solutions that directly improve the quality of our member's health. You thrive in ambiguity and proactively advocate for whatever it is you need to succeed. You deeply understand … Demonstrate strong technical and narrative writing capabilities Collaborate closely within your product team and with our internal Care Team (clinical staff, engineering, data science and product management) Iterate quickly on new software features Craft software that connects the dots between user needs, data, business goals, and clinical insight Successful Senior Full Stack Software Enginee r will have: Demonstrated track … record of bringing products to market using an iterative process 8+ years of experience developing production web applications Experience in numerous rapid application development frameworks such as Django, RubyonRails, and Node Extensive experience in demonstrating the ability of writing and deploying software tests (unit-, integration- and end-to-end tests) Proven use of web standards More ❯
London, England, United Kingdom Hybrid / WFH Options
Cutover
investment banks. What tech stack do we use here at Cutover? Our Cutover Enterprise platform is currently a Single Tenant platform, composed from a ReactJS frontend communicating with a RubyonRails API, hosted entirely on AWS, utilising RDS, Elasticache, Lambdas and many more. Cloud Engineers on our team primarily engage with Kubernetes, AWS, Terraform … Github Actions, DataDog and occasionally employ Ruby/Bash/Python scripting. As a Senior Cloud Engineer, here's what you'll be up to: Contribute to building a green field, highly available, and scalable EKS/K8s environment. Lead the technical architecture, design, prototyping, and implementation to support both product needs and overall technology strategy. Support and grow … Cloud Engineering tools (calling all AWS enthusiasts!). Taking ownership in leading Platform Engineering projects and a highly collaborative mindset, actively seeking opportunities to enhance our infrastructure. A focus on efficient delivery, taking the lead in engineering automated processes to streamline our delivery pipelines. Problem-solving prowess, ready to tackle issues in our cloud environment with a cool, calm More ❯
key markets around the world, ensuring our solutions are always imbued with the voice of today's consumers. As Business Analyst, you will play an essential role in working on solutions related to the selling of insurance, solutions automating and optimizing the claims process, as well more marketing related apps such as a health and wellness loyalty mobile application. … and document stakeholder requirements through interviews, workshops, and review sessions Translate business needs and problems in well-defined user stories and acceptance criteria Work closely with the product team on refining and assessing the product backlog to align features with strategic goals Transfer requirements to the technical team and provide support during solution development and detailed design preparation Share … Ability to define and solve more technical and integration related challenges Maintain a good working relationship with the colleagues in our multi-national team and global stakeholders Keep organized on tools such as Jira and Confluence to ensure business continuity Receive, process and document feedback from stakeholders and development teams in order to continuously improve our products and methods More ❯
London, England, United Kingdom Hybrid / WFH Options
monday.com
you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board. Description In a few short years, monday.com has grown from a successful startup based on a great idea to a publicly traded, multi-product company. We are one of the fastest-growing SaaS companies in the world, continuing to experience hyper-growth and scale … We are building and scaling our engineering teams in London and looking for an experienced, hands-on Engineering Manager to establish and lead our new Reporting team , part of the Worktools group . This group focuses on tools that help users interact with monday.com efficiently. It includes features that users see and use daily (like dashboards and docs … to build robust services and exceptional user experiences. Take an active role in defining and designing advanced solutions that push the boundaries of our platform. Our tech stack: Node.js, RubyOnRails, ReactJS, K8s, AWS, Redis, MySQL. We operate in a microservices and microfrontends architecture, allowing for rapid development and deployment cycles. Note: Prior experience with our More ❯
pressing needs We encourage software engineers to embrace data and to care about the success of the product We encourage learning and development. You get a budget to spend on books and courses and we have a learning day on the last Friday of every month Our tech stack Infrastructure: Heroku Backend: RubyonRails … team of Software Engineers, Product Designers and Product managers with a variety of backgrounds, skills and experiences. You can learn more about some of the people who work here on our careers page at https://www.florence.co.uk/our-company/careers/What’s the interview process like? Our interview process is simple, just two rounds and More ❯