Software Developer (.NET / JavaScript Frameworks)

Onefile Ltd, a Harris Computer company, is seeking a Software Developer on a full-time, permanent basis operating on a hybrid working model, based in Manchester (2 days per week).

As a Software Developer, you will design, develop, and maintain high-quality software solutions using .NET and Javascript frameworks.

You will work closely with cross-functional teams including Product, QA, and UX to deliver reliable and scalable applications.

You will also leverage modern AI-assisted development tools to accelerate delivery, improve code quality, and reduce manual effort across the development lifecycle.

This role requires a strong focus on clean code, performance, and continuous improvement, with an openness to adopting new technologies and AI-driven workflows.

Key responsibilities:


* Develop and maintain applications using .NET (C#) and Angular


* Use AI-assisted tools (e.g.

code generation, automated testing) to enhance development efficiency


* Collaborate with Product and QA teams to deliver high quality features


* Participate in code reviews and follow best development practices


* Troubleshoot and resolve issues across environments


* Contribute to improving development processes, automation pipelines, and AI adoption within the team

Skills and Experience:

Essential


* Proven experience developing web applications using .NET (C#) and modern JavaScript frameworks (e.g.

Angular).

Min 2 years +


* Strong understanding of software engineering principles, including clean code, performance optimisation, and maintainability.


* Experience working in Agile development environments and collaborating with cross-functional teams (Product, QA, UX).


* Familiarity with RESTful APIs, backend services, and integration patterns.


* Experience with version control systems (e.g.

Git) and participating in code reviews.


* Ability to troubleshoot, debug, and resolve issues across multiple environments.


* Exposure to automated testing practices and quality-focused development.


* Strong problem-solving skills and ability to deliver features end-to-end.


* Clear communication skills, with the ability to explain technical concepts to non-technical stakeholders.


* Openness to adopting AI-assisted development tools to improve productivity and code quality.

Desirable


* Experience working with Azure cloud services (e.g.

App Services, Functions, Event-driven architectures).


* Experience with automated testing frameworks (e.g.

Playwright or similar).


* Familiarity with CI/CD pipelines and modern deployment practices.


* Experience contributing to automation initiatives within the SDLC.


* Understanding of AI-assisted development workflows (e.g.

code generation, AI-supported debugging, test generation).


* Exposure to microservices or event-driven architectures.


* Interest in continuous improvement and driving efficiency through tooling and ...