Senior Backend Developer NestJS Up to £90,000 Share Options Remote (UK-based only) middle has partnered exclusively with one of the UKs most exciting early-stage start-ups. This is a greenfield opportunity to shape, build, and scale brand-new applications that help businesses make smarter financial decisions. We placed a Senior FE Engineer and a Senior BE Engineer into this team over a year ago, and both are thriving. Youll be joining them directly in build-mode solving real problems, shaping product direction, and bringing fresh ideas to life. This role is perfect for someone confident, collaborative, and commercially minded. Youll be part of a close-knit team where your input has real impact weighing up speed vs reward, delivering high-quality solutions, and helping to push the business forward. Tech Stack (core) 5 years of strong experience with Node.js, TypeScript, and NestJS Unit testing experience (ideally Jest) Practical knowledge of web application security Proven background with PostgreSQL Strong experience with GraphQL This role will suit you if you are: A perfectionist developer who cares deeply about code quality Commercially aware and able to influence tech decisions with practical ideas A genuine team player who enjoys working closely with stakeholders Experienced in start-up or scale-up environments (bonus) Familiar with Financial Services (useful, but not essential) Bonus: Full-Stack Option Were also open to Full-Stack Engineers with experience in: FE: React, Next.js, Material UI BE: Node.js, NestJS, TypeScript GraphQL, PostgreSQL, Kubernetes, Azure DevOps Why Apply? Work on a true greenfield build with modern tech No technical test instead, youll showcase real projects (ideally in TypeScript) and talk them through with the team Up to £90k salary share options Fully remote within the UK You must have the right to work in the UK no sponsorship available. If this sounds like the right move for you, please apply with your CV. middle recruitment is an Equal Opportunities Employer. We provide equal employment opportunities regardless of ethnic origin, gender, nationality, religion, physical ability, sexual orientation, marital status, parental status, or medical history.