Senior Full Stack Engineer

Design, build and maintain full-stack financial planning and modelling applications Take ownership of development from technical design through to production Contribute to architecture, performance, scalability and security improvements Improve CI/CD pipelines and automated unit, integration and end-to-end testing Use AI development tools, ensuring generated code meets engineering standards Lead code reviews, share knowledge and support the development of other engineers Work closely with Product and business stakeholders to deliver practical technical solutions

An opportunity to make a meaningful technical contribution, work with modern technologies and help shape the development of sophisticated financial software. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

An exciting opportunity for a Senior Full Stack Engineer to join a growing FinTech business building financial planning and modelling technology used by major financial institutions across the UK. You’ll play a key role in designing and developing complex applications, influencing technical decisions, and improving engineering standards. This role suits an experienced engineer who enjoys solving challenging problems, taking ownership, and supporting colleagues. Skills required: Strong commercial experience with TypeScript, JavaScript, and Node.js Proven full-stack development experience using React and Node.js Experience designing scalable applications and APIs Good knowledge of MongoDB, Redis or similar technologies Experience with CI/CD, containerised environments, and automated testing Strong technical judgement, problem-solving, and communication skills Experience with cloud platforms and AI-assisted development tools would be beneficial