API / Integration Developer (SC Cleared)

Salary: £? - ? per year

Requirements:

• Active SC Clearance.
• Strong commercial experience in bespoke systems integration.
• Proven experience integrating systems with third-party applications and services.
• Strong Microsoft Azure experience.
• Strong development experience with C#/.NET or a comparable programming language.
• Experience working with APIs and web services.
• Good understanding of integration patterns and software development principles.
• Strong problem-solving and troubleshooting skills.
• Ability to work effectively within a collaborative Agile environment.
• Experience with Python is desirable.
• Experience with REST/SOAP APIs is desirable.
• Experience with microservices and cloud-native development is desirable.
• Experience with Azure integration services is desirable.
• Experience with CI/CD and DevOps practices is desirable.
• Experience integrating legacy and modern systems is desirable.
• Experience working within large, complex or highly regulated organisations is desirable.

Responsibilities:

• Design and develop bespoke integration solutions between multiple systems and platforms.
• Develop and maintain integrations with third-party applications and services.
• Build and support cloud-based solutions using Microsoft Azure.
• Develop integration components and applications using C#/.NET or another suitable programming language.
• Work with APIs, web services and other integration technologies.
• Troubleshoot and resolve complex integration and application issues.
• Work closely with developers, architects, technical teams and stakeholders to deliver integration solutions.
• Contribute to technical design, documentation and development standards.
• Support testing, deployment and ongoing maintenance of integration services.
• Ensure solutions are secure, scalable, reliable and maintainable.

Technologies:

• API
• Azure
• C#
• CI/CD
• Cloud
• DevOps
• Support
• Python
• REST
• SOAP
• Web
• microservices
• ASP.NET
• ARM

More:

We are hiring a Senior API/Integration Developer for a major public sector technology programme on an initial 7-month contract. This is a London / hybrid role with 2-3 days per week on site and offers a day rate of £550 inside IR35. Due to the nature of the role and client, the selected candidate must have active SC clearance. We are a specialist technical recruitment consultancy supporting complex technology programmes across the UK.

last updated 33 week of 2026