Windows Developer (.NET)
Location: Essex – 2 days per week
Type: Permanent
Salary: Up to £50,000
Cooper Lomaz are working with a leading organisation to recruit an experienced .NET Windows Developer to join their growing technology team.
This is an exciting opportunity to work on business-critical applications, helping to modernise legacy systems and play a key role in a wider cloud transformation programme.
The Role
As a Windows Developer, you will be responsible for designing, developing, and maintaining high‑quality Windows applications and services. You’ll work closely with both technical teams and business stakeholders to deliver scalable and reliable solutions.
A key part of the role will involve refactoring existing systems into .NET and contributing to the future cloud architecture strategy.
Key Responsibilities
- Develop and maintain Windows applications and services
- Collaborate with project managers, testers, and business users
- Refactor and migrate legacy systems into C# / .NET
- Deliver high‑quality solutions within agreed timescales
- Produce and maintain technical documentation
- Participate in code reviews and follow best practices
- Contribute to design, planning, and estimation sessions
- Take ownership of tasks and manage your workload effectively
About You
We’re looking for a developer with a strong technical background and a proactive approach to problem-solving.
Experience Required
- Minimum 3 years’ experience developing in C# / .NET
- Strong experience with SQL Server (T‑SQL)
- Experience working with APIs, databases, and integrations
- Proven track record of delivering production-ready software
- Experience with Agile/Scrum methodologies (desirable)
- Exposure to performance optimisation and troubleshooting
- Understanding of secure coding practices
- Financial services experience (advantageous)
Technical Skills
- Strong knowledge of C#, .NET / .NET Core
- Experience with WinForms or WPF
- Familiarity with REST APIs, JSON/XML
- Understanding of software architecture patterns (MVC, MVVM)
- Experience with Git or other version control systems
- Knowledge of CI/CD pipelines and automated testing
- Exposure to Azure or cloud technologies
Soft Skills
- Strong communication skills across technical and non-technical teams
- Well organised with good time management
- Able to work independently and collaboratively
- Adaptable with a continuous improvement mindset
- High attention to detail and quality
Qualifications
- Degree in Computer Science, Software Engineering, or similar OR equivalent commercial experience
- Microsoft certifications (e.g. Azure) are beneficial
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