Contract Software Developer

Spectrum IT Recruitment; Guildford; Remote; GBP 77,000 - 120,000; Full time

Job summary

Spectrum IT Recruitment is seeking an experienced contract Full Stack .NET Developer to support an organisation with ongoing development and maintenance of a critical enterprise application. The role is hands-on, requiring quick comprehension of existing codebases and delivery of new functionality alongside troubleshooting and issue resolution.

The candidate will work across backend and frontend, using C#/.NET for server-side work and Vue.js/React/Angular for client-side interfaces.

Qualifications

• Proven commercial development experience with C# and .NET.
• Frontend frameworks: Vue.js/React/Angular.
• Experience building and consuming APIs.
• Experience maintaining and enhancing mature applications.

Responsibilities

• Develop and enhance an established business-critical application using C#/.NET.
• Design, develop and implement new features across backend and frontend components.
• Investigate application issues, identify root causes and deliver fixes.
• Work with existing codebases, ensuring changes are maintainable and minimise regression risk.
• Support testing, bug fixing and controlled releases.
• Collaborate with the existing development team to deliver requirements efficiently.
• Provide technical support for live application issues.
• Ensure high-quality, scalable software delivery across the stack.
• Maintain and improve production applications.

Skills

C#

.NET

Vue.js

React

Angular

API development

Git

CI/CD

Tools

Git

CI/CD

Job description

Location: Fully Remote
Duration: 3 months
IR35 Status: Outside

Our client requires an experienced contract Full Stack .NET Developer to support an established organisation with the ongoing development and maintenance of a enterprise business-critical application. This is a hands‑on contract opportunity, ideal for a developer who is comfortable working within an existing codebase, quickly understanding unfamiliar systems and delivering new functionality alongside troubleshooting and resolving technical issues.

Key Responsibilities

• Develop and enhance an established business-critical application using C#/.NET.
• Design, develop and implement new features across backend and frontend components.
• Investigate application issues, identify root causes and deliver effective fixes.
• Work with existing codebases, ensuring changes are maintainable and minimise regression risks.
• Support application testing, bug fixing and controlled releases.
• Collaborate with the existing development team to deliver requirements efficiently.
• Provide technical support and troubleshooting for live application issues.
• Strong commercial development experience with C# and .NET.
• Frontend development experience using Vue.js, React or Angular. The
• Experience maintaining, troubleshooting and enhancing existing production applications.
• Comfortable working across both backend application logic and frontend user interfaces.
• Vue.js experience would be particularly advantageous as this is the framework being used.
• API development and integration.
• Experience modernising or enhancing mature .NET applications.

This contract would suit an experienced, pragmatic Full Stack Developer who enjoys solving problems and improving existing systems rather than exclusively working on greenfield projects. The priority is finding someone who can hit the ground running, work independently and confidently deliver fixes and new functionality within an established development environment.