Senior JavaScript Backend Developer – 70,000-80,000 EUR base salary – Fully remote (ideally Portugal based, or UK based) We are recruiting for a Senior JavaScript Backend Developer to work on an established trading system development project with a large enterprise client. Key responsibilities: Backend development for an internal trading platform using the following technologies: TypeScript, Monorepo, GitHub, Jest, Playwright, React, Redis, SQL, WebSockets, Docker, Kubernetes, Github Actions, SonarQube. Communicate with client to understand requirements Contribute to automated tests Peer code review Take responsibility for features you deploy into staging and enterprise production environments Essential skills and experience: 8 years of professional programming experience 3 years of professional typescript or flow experience Strong communication skills Fluency in English Legal right to work in the country you are based in (Portugal or UK) Desirable experience - experience with functional programming/languages like OCaml or Haskell etc. Additional benefits: 5 days/per year for training £1,000 annual allowance for training (up to 50% of this value can be used for you to buy workstation equipment to work from home) In-person fun team events/team buildings every 3 months Company equipment and onboarding kit Annual bonus (dependent on company and personal performance) Stock option plan Birthday off Generous employee referral programme