Senior Full-Stack Engineer
Organization: Applied Blockchain
Location: London, England, United Kingdom
About the roleWe’re looking for a Senior Full-Stack Engineer to join an established trading platform development programme for a large enterprise client. The system is production-critical, long-lived, and actively evolving, with a strong focus on performance, reliability, and maintainability.While Applied Blockchain is well known for distributed ledger and cryptography work, this role is focused on a non-blockchain trading system built using modern TypeScript-based technologies.You’ll be joining a highly experienced team of senior engineers and QA developers, where autonomy, technical ownership, and thoughtful decision-making are expected.What you’ll be doingDesigning, building, and maintaining features across the full stack of an internal trading platformWorking primarily with:TypeScript (Node.js & React)Monorepo tooling, GitHub, GitHub ActionsJest, PlaywrightRedis, MS SQL, WebSocketsDocker, KubernetesObservability tooling (Grafana, Prometheus, SonarQube)Taking end-to-end ownership of features from design through to productionCollaborating closely with platform / DevOps engineers on build pipelines, observability, and operational concernsCommunicating directly with the client to clarify requirements and propose solutionsContributing to and improving automated testing practicesParticipating in peer code reviews and helping maintain high engineering standards across the teamUsing LLM/AI enabled development tools and techniques (with access to the latest OpenAI/Anthropic/etc. models) as part of day-to-day development 5+ years of professional software development experience3+ years of hands-on experience with TypeScript, including Node.js and ReactStrong experience building and maintaining production systemsSolid understanding of DevOps and operational concerns (logging, metrics, automation)Comfortable working in a senior, autonomous engineering teamStrong communication skills and fluency in EnglishFlexible working location (remote, London office, or Porto office)Nice to haveExperience with functional programming concepts or languages (e.g. OCaml, Haskell)Prior experience in trading, finance, or other real-time systems 5 days per year dedicated to training£1,000 annual training allowance (up to 50% usable for home workstation equipment)Company equipment and onboarding kitIn-person team events every 3 monthsAnnual bonus (company and personal performance dependent)Stock option planBirthday offGenerous employee referral programmeAbout Applied BlockchainApplied Blockchain is an innovative applications development company based in London and Porto, specialising in complex, high-assurance systems using distributed technologies and advanced cryptography. We value pragmatic engineering, clear thinking, and building systems that last.