Full-Stack Web Software Engineer - React, ASP.NET & C#

  • Computer Futures - London & S.E(Permanent and Contract)
  • Portsmouth, Hampshire
  • 15/04/2026
Full time Information Technology Telecommunications Software Engineer Testing

Job Description

Full-Stack Software Engineer (React & ASP.NET/C#)

We're looking for a Full-Stack Software Engineer to join a growing development team building modern, business-critical web applications. This role suits someone who enjoys working across the full stack and takes pride in owning features from initial concept through to deployment.

You'll be involved in both Front End and Back End development, working closely with other engineers, product owners, and stakeholders to deliver clean, scalable, and user-focused solutions.

What you'll be doing

  • Designing and building Front End web applications using React
  • Developing and maintaining Back End services and web applications using ASP.NET and C#
  • Working across the full stack, contributing to both UI and API development
  • Building and consuming RESTful APIs
  • Writing clean, well-structured, and maintainable code
  • Collaborating with the wider team to refine requirements and technical solutions
  • Troubleshooting issues, improving performance, and fixing bugs
  • Supporting the ongoing improvement of development standards, tooling, and ways of working
  • Taking ownership of features and delivering them end to end

What we're looking for

  • Strong commercial experience with React for Front End development
  • Solid Back End experience using ASP.NET and C#
  • Proven experience working in a full-stack role (not purely Front End or purely Back End)
  • Good understanding of modern web application architecture
  • Experience building and working with APIs
  • Comfortable working in a collaborative, agile environment
  • Able to communicate clearly with both technical and non-technical colleagues
  • A pragmatic approach to problem-solving and delivery

Nice to have

  • Experience working with cloud environments
  • Exposure to CI/CD pipelines
  • Knowledge of modern testing practices
  • Experience working on scalable or high-availability systems

Why consider this role?

  • Genuine full-stack work with balanced exposure across Front End and Back End
  • Opportunity to work on real, production systems rather than greenfield demos only
  • A collaborative team environment with scope to influence technical decisions
  • Room to grow technically and professionally as the team and systems evolve

If you enjoy building complete web solutions and want a role where you can see the direct impact of your work, this is a strong opportunity to develop your full-stack skill set further.

To find out more about Computer Futures please visit our website

Computer Futures, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC387148 England and Wales