Full Stack Engineer

## About the role This is an early, high-ownership role. You'll be a versatile, hands-on builder who can cover a wide range of work across the stack, especially building clean, trustworthy user-facing interfaces as well as the systems behind them. You will work directly with the founders to turn product specifications and technical flows into a working MVP that feels simple, robust and trustworthy. ## Key Responsibilities - Own the MVP build end-to-end across frontend, backend, database and deployment - Build core user flows for a transactional marketplace including edge cases such as errors, cancellations, refunds, disputes and payment failures - Write clean, maintainable code and establish testing and review practices - Implement authentication, permissions and administration tooling - Build and document APIs and data models that can scale with the product - Integrate payments (Stripe) with robust failure handling - Set up environments, deployment, CI/CD, logging and monitoring - Work closely with the founders on product decisions and delivery milestones ## What you'll work on in the first 6–12 months - Building the first production-ready web MVP - Translating product flows into structured frontend screens and backend services - Implementing core marketplace journeys: listing, buying/reselling, payments and verification - Establishing the first technical architecture and development practices - Building secure data handling and access controls - Shipping product improvements in short development cycles ## Essential Experience - 5+ years experience as a Full-Stack Engineer building customer-facing products - Strong frontend skills (React / Next.js preferred) - Strong backend skills (Node.js / TypeScript preferred) - Strong database fundamentals (Postgres preferred) - Experience building end-to-end product flows ## Ideal Traits - Comfortable working across frontend, backend, infrastructure and deployment - Strong product judgement and ownership - Experience building transactional systems involving payments or bookings - Familiarity with marketplaces or two-sided platforms - Ability to work in an early-stage startup environment ## Practical Requirements - London-based or able to commute - Able to work in-person 2–3 days per week - Right to work in the UK ## Nice to Have - Experience with Stripe or payment systems - Experience with AWS deployment - Experience working as an early engineering hire - Interest in building high-trust transactional platforms ## Working Pattern - Full-time employment - Hybrid: London / Venture Space (CityVentures) - Start date: As soon as possible. ## About the company About SwapTix The secondary ticket market has become complicated and, for many people, unfair. Customers face hidden fees, confusing policies and uncertainty when they need to change plans or resell tickets. SwapTix is building a fair, transparent and safe platform for secondary ticket resale. Our aim is to create a clear, trustworthy experience when real money, access and time-sensitive events are involved. We are currently pre-launch, with our legal, financial and technical foundations already in place. We are now hiring our first engineering hire on a full-time basis to work directly with the founders and build the first working version of the product. SwapTix is currently part of the CityVentures incubator at City, University of London and is based at Venture Space. ## How to apply As part of the process, all applicants are required to complete a short structured application form. Application form: https://forms.gle/LBAWVmDKfU1RBqHS6 Applications will be reviewed on a rolling basis, and shortlisted candidates will be invited to a structured interview and technical discussion with the founders. Applications will only be considered once the form has been submitted. If you have any questions, please email [email protected]