Senior Full-Stack Engineer
About the role
We're looking for a Senior Full-Stack Engineer to join an established trading platform development programme for a large enterprise client. The platform has been live in production for over 7 years, with most of the core team having worked on it for close to 5 years on average — a reflection of the stability, quality, and long-term nature of this engagement.
The system is production-critical 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. The role is full stack in nature, though with a slightly stronger emphasis on the frontend (React/TypeScript).
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 doing
- Designing, building, and maintaining features across the full stack of an internal trading platform
- Working primarily with:
- TypeScript (Node.js & React)
- Monorepo tooling, GitHub, GitHub Actions
- Jest, Playwright
- Redis, MS SQL, WebSockets
- Docker, Kubernetes
- Observability tooling (Grafana, Prometheus, SonarQube)
- Taking end-to-end ownership of features from design through to production
- Collaborating closely with platform / DevOps engineers on build pipelines, observability, and operational concerns
- Communicating directly with the client to clarify requirements and propose solutions
- Contributing to and improving automated testing practices
- Participating in peer code reviews and helping maintain high engineering standards across the team
- Using LLM/AI enabled development tools and techniques (with access to the latest OpenAI/Anthropic/etc. models) as part of day-to-day development
Requirements
- 8+ years of professional software development experience
- 3+ years of hands-on experience with TypeScript, including Node.js and React
- Strong experience building and maintaining production systems
- Comfortable working in a senior, autonomous engineering team
- Strong communication skills and fluency in English
- Hybrid work arrangement (Waterloo, London)
Nice to have
- Experience with functional programming concepts or languages (e.g. OCaml, Haskell)
- Prior experience in trading, finance, or other real-time systems
- Solid understanding of DevOps and operational concerns (logging, metrics, automation)
- London-based
- Willingness to travel to company/client events
Benefits
- 5 days per year dedicated to training
- £1,000 annual training allowance (up to 50% usable for home workstation equipment)
- Company equipment and onboarding kit
- In-person team events every 3 months
- Annual bonus (company and personal performance dependent)
- Stock option plan
- Birthday off
- Generous employee referral programme
About Applied Blockchain
Applied 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.