Full Stack Developer (React / C# .NET)

Salary: £30,000 - 60,000 per year Requirements: • Extensive commercial experience as a Full Stack Developer. • Strong expertise in React and modern front-end development practices. • Strong experience with C#/.NET and back-end API development. • Experience designing and developing enterprise-grade applications. • Proven experience working on data migration, ETL, or integration projects. • Strong understanding of relational databases and data modelling. • Experience contributing to technical design and architectural discussions. • Comfortable working within Agile delivery teams. • Excellent stakeholder engagement and communication skills. • Experience working on large-scale transformation programmes. • Exposure to cloud-based architectures and modern deployment approaches. • Experience integrating with multiple enterprise platforms and third-party systems. • Familiarity with Jira, Confluence, and Agile tooling. Responsibilities: • Design, develop, and maintain modern web applications using React and C#/.NET. • Deliver robust front-end experiences with a strong focus on usability and performance. • Build scalable and maintainable back-end services, APIs, and integrations. • Contribute across the full technology stack where required. • Support development best practices, code quality, and technical standards. • Support key data transformation initiatives, including migration of existing artefacts into target data models. • Design and implement ETL solutions. • Develop data ingestion processes and pipelines. • Integrate with target platforms, applications, and databases. • Validate, transform, and reconcile legacy data. • Contribute to solution architecture discussions. • Support system and integration design activities. • Contribute to environment and deployment strategy. • Carry out technical assessments and feasibility analysis. • Define implementation approaches and delivery options. • Participate in workshops, discovery sessions, and sprint planning activities. • Refine business requirements and technical features. • Provide estimates and support work sizing exercises. • Contribute to sprint delivery and release activities. • Collaborate closely with Product Owners, Business Analysts, Architects, and Test teams. Technologies: • API • C# • Cloud • Confluence • ETL • Support • JIRA • React • Web • ASP.NET • Fullstack More: We are seeking experienced Senior Full Stack Developers to join a major business transformation programme focused on modernising platforms, data capabilities, and core business processes. This is an initial 3-month engagement within a long-term programme, offered outside IR35, with hybrid working of approximately 1 day per week in Birmingham, flexible based on project requirements. The rate is £500 per day outside IR35. We offer the opportunity to play a key role in the design, development, and delivery of enterprise-scale solutions, working across both front-end and back-end technologies while contributing to data migration, integration, and technical design activities within an Agile delivery environment. last updated 38 week of 2026