.NET Developer

Tech4; Southampton; Hybrid; GBP 55,000 - 60,000; Full time

Job summary

Tech4 in the United Kingdom is seeking a hands-on .NET Developer to build, enhance and support customer-facing, operational and internal systems. The role focuses on APIs and integrations using Microsoft technologies, in a mixed legacy and modern environment.

You will work with IT, product owners and third parties to deliver reliable, maintainable solutions and contribute to design decisions while following best practices in version control, testing and deployment.

Qualifications

• Commercial experience developing software using C# and .NET.
• Experience building or supporting APIs, web services and system integrations.
• Experience with ASP.NET / ASP.NET Core
• Experience with SQL Server and database design / querying
• Experience using Git for source control
• Experience with Azure DevOps or similar tooling for work tracking, build and deployment
• Experience working within a software development team in a structured commercial environment
• Experience troubleshooting and supporting live applications
• Strong problem-solving skills and the ability to work through technical issues in a practical way
• Good communication skills and ability to work with both technical and non-technical colleagues

Responsibilities

• Develop, enhance, test and support .NET-based applications, APIs and integrations.
• Work on customer-facing, operational and internal systems, helping to improve reliability, usability and business value.
• Collaborate with stakeholders to translate requirements into technical solutions.
• Build and maintain system integrations between internal platforms and external suppliers or services.
• Support the ongoing improvement and maintenance of existing applications, including troubleshooting defects, performance issues and production incidents.
• Contribute to technical design decisions, ensuring solutions are secure, supportable and aligned to good engineering practice.
• Write clean, maintainable code and follow agreed standards for version control, testing, deployment and documentation.
• Participate in code reviews, peer support and knowledge sharing within the team.
• Assist with release activity, deployment processes and post-release support where required.
• Help improve development practices, documentation and technical resilience to reduce dependency on individual team members.
• Work with Azure DevOps, Git and CI/CD tooling to support structured software delivery.
• Contribute to a collaborative, delivery-focused team culture and support continuous improvement in the way they develop and supports software.
• In addition to the duties listed above, the jobholder is expected to perform other ad-hoc duties assigned by the Head of IT from time to time.
• All colleagues are required to accept responsibility for personal development within the scope of their role, and to encourage the development of others.

Skills

C#

NET

APIs

Web services

System integrations

ASP.NET

ASP.NET Core

SQL Server

Git

Azure DevOps

Education

Bachelor's degree in Computer Science or equivalent

Tools

Git

Azure DevOps

CI/CD tooling

Job description

.NET Developer - .NET / C# / APIs - is required by fast growing and highly successful organisation.

Overall purpose of the role

They are looking for a hands-on Software Developer to help develop, enhance and support their customer-facing, operational and internal systems.

This role will focus on building and maintaining applications, APIs and integrations using Microsoft technologies, while also supporting the improvement of existing systems across a mixed legacy and modern estate. The successful candidate will work closely with colleagues across IT, the wider business and third-party suppliers to deliver reliable, maintainable and commercially useful solutions.

This role suits someone who is comfortable working across new development, enhancing existing systems, supporting live applications (and technical improvement of the wider application landscape) who is a pragmatic and can work effectively in a small team, contribute across the full delivery lifecycle and help improve delivery quality, documentation and technical resilience over time.

• Develop, enhance, test and support .NET-based applications, APIs and integrations.
• Work on customer-facing, operational and internal systems, helping to improve reliability, usability and business value.
• Collaborate with business stakeholders, product owners, analysts and third parties to understand requirements and translate them into workable technical solutions.
• Build and maintain system integrations between internal platforms and external suppliers or services.
• Support the ongoing improvement and maintenance of existing applications, including troubleshooting defects, performance issues and production incidents.
• Contribute to technical design decisions, ensuring solutions are secure, supportable and aligned to good engineering practice.
• Write clean, maintainable code and follow agreed standards for version control, testing, deployment and documentation.
• Participate in code reviews, peer support and knowledge sharing within the team.
• Assist with release activity, deployment processes and post-release support where required.
• Help improve development practices, documentation and technical resilience to reduce dependency on individual team members.
• Work with Azure DevOps, Git and CI/CD tooling to support structured software delivery.
• Contribute to a collaborative, delivery-focused team culture and support continuous improvement in the way they develop and supports software.
• In addition to the duties listed above, the jobholder is expected to perform other ad-hoc duties assigned by the Head of IT from time to time.
• All colleagues are required to accept responsibility for personal development within the scope of their role, and to encourage the development of others.

Knowledge / Experience required

• Commercial experience developing software using C# and .NET
• Experience building or supporting APIs, web services and system integrations
• Experience with ASP.NET / ASP.NET Core
• Experience with SQL Server and database design / querying
• Experience using Git for source control
• Experience with Azure DevOps or similar tooling for work tracking, build and deployment
• Experience working within a software development team in a structured commercial environment
• Experience troubleshooting and supporting live applications
• Strong problem-solving skills and the ability to work through technical issues in a practical way
• Good communication skills and ability to work with both technical and non-technical colleagues

Excellent training and career development opportunities exist for the right candidate.

Basic salary £55-60,000 + excellent benefits

Based Southampton office 2 days per week, remote 3 days per week.