Senior Full Stack Developer
Posted 3 days ago by Click
£400 Per day
Outside
Hybrid
London, UK
Summary: The Senior Full Stack Developer role focuses on developing modern internal applications and operational tools for a retail business undergoing transformation. The position requires expertise in React and .NET, with an emphasis on delivering scalable, API-first systems. The contract is outside IR35, with an immediate start and a hybrid working arrangement. The role is suited for someone who enjoys solving operational challenges through clean engineering practices.
Key Responsibilities:
- Develop modern React-based internal applications and support .NET Back End services.
- Replace legacy workflows with scalable, API-first systems.
- Collaborate closely with product and operational stakeholders.
- Focus on building applications that support scheduling, optimization, and customer service functions.
- Engage in delivery-focused work to solve operational challenges.
Key Skills:
- Strong experience with React (v18+) and TypeScript.
- Solid Back End development experience using .NET/C#.
- Experience in building scalable APIs and internal systems.
- Understanding of modern Front End architecture and performance.
- Experience in retail, logistics, scheduling, or operational systems is beneficial.
- Shopify experience is a major bonus.
Salary (Rate): £400 per day
City: London
Country: UK
Working Arrangements: hybrid
IR35 Status: outside IR35
Seniority Level: Senior
Industry: IT
Senior Full Stack Developer - .NET/React
Outside IR35 Contract
Up to £400 per day
Initial 3-6 Month Contract | Immediate Start - 1 day a week in London
We're working with a well-established retail business currently undergoing a major internal transformation programme and they're looking for a Senior Full Stack Developer to join immediately on an Outside IR35 contract basis.
The business has been operating successfully for over 10 years and combines the stability of an established company with the pace and culture of a start-up environment. Decisions happen quickly, there's very little hierarchy, and engineers are trusted to own delivery and make an impact.
This role will focus heavily on building modern internal applications and operational tooling that support large-scale scheduling, optimisation and customer service functions across the business.
The Role
You'll play a key role in developing modern React-based internal applications alongside supporting .NET Back End services, helping replace Legacy workflows with scalable, API-first systems.
The work is highly delivery-focused and suited to someone who enjoys solving real operational challenges through clean, pragmatic engineering.
Tech Stack
- React (v18+)
- TypeScript
- .NET 8/C#
- Azure
- REST APIs
- Modern Front End tooling
- CI/CD pipelines
Key Experience
- Strong experience building modern applications with React and TypeScript
- Solid Back End development experience using .NET/C#
- Experience building scalable APIs and internal systems
- Comfortable working closely with Product and operational stakeholders
- Strong understanding of modern Front End architecture and performance
- Experience in retail, logistics, scheduling or operational systems would be beneficial
- Shopify experience would be a major bonus