Velocity Tech have partnered with an exciting tech company who are looking for a Senior Full Stack Developer to join their team on a contract basis. The length of the contract is 6 months with the likelihood of extension. This is a hybrid role with the expectation of 3 days a week onsite in their London office. Responsibilities: Lead full stack development of scalable web applications. Architect and implement clean, maintainable code in both the frontend and backend. Collaborate closely with product owners, designers, and engineers to define and deliver technical solutions. Set coding standards and best practices within the team. Conduct code reviews and ensure high-quality output. Identify technical risks early and provide solutions. Drive continuous improvement in development practices. Key Skills & Experience: Strong commercial experience with TypeScript (React, Node.js preferred). Solid backend development experience with Kotlin (Spring Boot or Ktor frameworks advantageous). Previous leadership experience – mentoring developers, leading small teams or pods. Excellent understanding of software architecture and scalable systems design. Experience working in Agile/Scrum environments. Strong CI/CD and DevOps practices (Docker, Kubernetes, AWS or similar desirable). Excellent communication and stakeholder management skills.