Salary: £50,000 - 60,000 per year Requirements: Strong experience as a Senior or Lead Developer Proven ability to build scalable, data-driven applications Experience across frontend and backend technologies Strong understanding of cloud infrastructure and modern architectures Experience mentoring or leading engineers Responsibilities: Design and develop scalable, high-performance applications Define and promote best practices across architecture and coding standards Build end-to-end features across frontend and backend systems Develop modern web applications using React / Next.js Build backend services using Node.js and/or .NET (C#) Design and implement APIs (RESTful and GraphQL) Work with SQL and NoSQL databases (SQL Server, PostgreSQL, MongoDB) Ensure strong test coverage through unit and integration testing Lead technical discussions, design reviews, and proof-of-concepts Mentor and support engineers across the team Technologies: Backend C# Cloud Frontend GraphQL Support MongoDB NoSQL PostgreSQL React SQL Web ASP.NET NodeJS AWS Azure CI/CD DevOps ES6 JavaScript Jest TypeScript More: We are Mploy Group, partnering with a globally established technology business that is building advanced, data-driven platforms used in complex, large-scale environments. We offer a competitive salary of £50-60,000, along with flexible/hybrid working options and ongoing training and development opportunities. Join us to have a real influence over platform direction at a crucial time in our growth, with a clear path into senior technical leadership roles. last updated 18 week of 2026