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Fynity Linkedin · Posted 27d ago

Full Stack Engineer

London, Westminster, United Kingdom

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Full Stack Developer - Hybrid 1 day a week in London


React / .NET | 6 Month Fixed Term Contract | Major Transformation Programme


We’re looking for a Frontend-leaning Full Stack Developer to join our client on a 6-month fixed-term contract basis and help deliver a high-impact transformation programme focused on Home Visits scheduling and optimisation.


This is a hands-on role where you’ll own the design and build of modern React applications used daily by call centre teams, retail stores, and central operations. You’ll play a key part in replacing legacy workflows with fast, intuitive, API-first tools that support real operational change across the business.


If you enjoy building clean, scalable frontend architecture while still contributing to solid backend services, this is a role where you can make a visible, meaningful impact.


What You’ll Be Doing


  • Building modern, high-performance interfaces using React (v18+) & TypeScript
  • Owning frontend architecture (components, state management, performance, UX consistency)
  • Contributing to backend services using .NET (v8+) & C#
  • Designing APIs and integrating with external optimisation platforms
  • Working closely with Product and operational teams to solve real-world workflow challenges
  • Supporting CI/CD and deployments in Microsoft Azure


What We’re Looking For


  • Strong production experience with React + TypeScript
  • Experience designing scalable frontend architecture
  • Solid API/backend experience with .NET & C#
  • Good understanding of data modelling and performance
  • Comfortable working in a collaborative, delivery-focused environment


Why Join?


  • A salary of up to £75,000
  • 25 days holiday plus bank holidays
  • Day off for your Birthday
  • Perks platform (cheap cinema tickets, cashback and discounts on well-known brands)
  • 25% Employee discount
  • Be part of a major internal transformation programme
  • Build business-critical tools used daily across the organisation
  • Replace legacy systems with modern, scalable architecture
  • Have real ownership and influence over frontend direction



If you are looking for a new challenge, then APPLY NOW for immediate consideration!!!

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