Software Engineer (Backend)
About this role
Software Engineer London | Full-time | Hybrid | Shoreditch/Liverpool Street Create the Future of Travel With UsWhether it's visiting the people closest to us, starting an exciting adventure, or a career-defining business trip, travel is essential. Yet we've all experienced the aches and pains of getting to our destination. More than 4 billion airline passengers rely on technology that hasn't kept up with modern expectations. That's why we're rebuilding the infrastructure that underpins the travel industry - simplifying systems and building tools that will make the future of travel effortless. We were part of Y Combinator S18's cohort and we're backed by Benchmark, Blossom, Index Ventures, and Kima Ventures - a fantastic set of investors that has helped build some of the world's largest companies.Our London team is growing, and we're looking for talented people to join us on our journey. Engineering at DuffelWe're building tools to simplify travel distribution, search, and booking through one seamless API. The technical challenge? Design a beautiful API, then integrate it with hundreds of travel providers - each with different systems and requirements - whilst delivering a fantastic developer experience. We work with Elixir, Phoenix, Kubernetes, and Google Cloud Platform, but we value strong engineering fundamentals over specific tech experience. You'll Thrive Here If:✅ You're passionate about designing beautiful APIs and creating great developer experiences✅ You have a high bar for code quality and API design✅ You have opinions on good engineering standards and processes as we define ours at Duffel✅ You think big picture - making tradeoffs between technical work and business impact✅ You communicate clearly, articulating what you're working on and why in a structured way✅ You thrive collaboratively - you believe in your methods but stay open to feedback and suggestionsBonus: Experience in travel, flights, hotels, or cars What You'll Get:💰 Competitive salary + equity (you'll own part of Duffel)🏝️ Work from anywhere policy🛩️ Duffel travel allowance (use what we build)🍼 Matched parental leave🧘♂️ Sabbatical programme (3 months full pay)🪩 Office in Shoreditch + regular team socialsWhy Now MattersYou'll work on the core API powering millions of travel bookings. Early-stage role = outsized impact on how we build and scale.
What this role is, and what else it is called
Employers in London advertise this kind of work as Software Engineer, Senior Software Engineer, Web Developer and Full Stack Developer too, so it is worth searching more than one wording. It is a mid-level Software Engineering role in London, advertised as hybrid, splitting time between home and the office.
About hiring at Duffel
Duffel has 1 other live technology role on its careers page, across Data, AI & Machine Learning and Software Engineering. Elsewhere in its adverts Duffel asks for TypeScript and Generative AI. See all Duffel roles, salaries and stack.
How this role compares to the market
541 live UK roles list Google Cloud right now, from 224 employers. The median advertised salary is £90,000; 30% are advertised as remote. Browse Google Cloud roles.
797 live UK roles list Kubernetes right now, from 245 employers. The median advertised salary is £97,250; 39% are advertised as remote. Browse Kubernetes roles.
London has 4,315 live IT vacancies across 1,363 employers, with a median advertised salary of £70,000. Browse London roles.
Market figures are today's snapshot of live UK roles on employer careers pages; see hiring trends.
Technologies mentioned
Detected on Duffel's careers page. ProdReady Recruitment lists this vacancy as an aggregator and is not the employer; applications go to the employer's own site. More IT jobs in London.