Senior Full Stack Developer at IntecSelect, Tower of London, 6 Months, £450-£600 per day

Senior Full Stack Developer (Contract)

Outside IR35 | Remote | Up to £600/day

Overview
We're partnering with a specialist software consultancy delivering business-critical platforms across financial services and pensions. They're looking for a Senior Full Stack Developer who enjoys proper engineering - clean architecture, ownership of solutions, and working alongside experienced senior engineers and QA specialists.
This is a hands-on delivery role (no line management, no ticket-factory environments) with meaningful technical influence across the full stack.

What you'll be doing

• Designing and building end-to-end full-stack solutionsin a modern cloud environment
• Backend development using Python and C#
• Frontend development with TypeScript and React
• Working within Azure (Functions, Azure SQL, Service Bus, ADF)
• Contributing to architecture discussions, technical design, and code reviews
• Applying pragmatic AI-assisted/agentic engineering practices to improve delivery quality and velocity
• Supporting development of financial modelling platforms, including areas such as:

-Monte Carlo simulations
-cashflow projections
-scenario modelling
-valuation/forecasting logic
-pension or investment modelling engines

What we're looking for

• Strong experience as a Senior Full Stack Developer across Back End, Front End, and cloud
• Commercial experience building modelling or calculation-heavy platforms in financial services, pensions, investments, or similar regulated domains
• Exposure to simulation engines, forecasting tools, or financial projection systems
• Comfortable owning features end-to-end and making sensible technical trade-offs
• High standards around code quality, testing, and maintainability
• Experience working in regulated or accuracy-critical environments

Contract details

• Up to £600 per day
• Outside IR35
• Fully remote
• Initial 6-month contract