Senior Full Stack Developer (React / C# .NET) Contract: Initial 3-Month Engagement (Long-Term Programme) Location: Hybrid Working - Approximately 1 day per week in Birmingham (flexible based on project requirements) Rate: £500 per day - Outside IR35 Senior Full Stack Developers. Strong React/front-end capability. Strong C#/.NET back-end capability. Ability to operate across the full stack where required.Overview We are seeking experienced interim Senior Full Stack Developers to join a major business transformation programme focused on modernising platforms, data capabilities, and core business processes. You will need very strong React skills with core C# (recent) experience. This is a full stack role with a Front End bias. This is an 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. The successful candidates will be strong engineers with deep expertise in React and C#/.NET, capable of operating across the full technology stack and collaborating closely with Product Owners, Business Analysts, Architects, and Testing teams within an Agile delivery environment. Essential Skills & Experience 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. Desirable Experience 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.If your profile demonstrates strong and recent experience in the above areas - please submit your application to Jackie Dean at TXP for consideration