NET Software Developer - InterSystems Integration

Software Developer x2 - Outside IR35 - Must be open to working on-site

We are seeking two experienced Software Developers to support a public-sector digital transformation programme based in Jersey.

The successful candidates will work across new software development, application enhancement, platform modernisation and enterprise integration. They must be capable of contributing throughout the software development lifecycle, from understanding requirements and solution designs through to development, testing, deployment and early-life support.

Ideal Candidate profile:

The ideal candidate will be a hands-on Microsoft-stack Software Developer with strong commercial experience across Azure, .NET/C#, modern front-end development and enterprise integration.

They should be comfortable taking ownership of technical deliverables, working with limited supervision and contributing within a complex, multi-disciplinary programme. This person must be able to work effectively with architects, analysts, business stakeholders, technical teams and third-party delivery partners.

Previous public-sector experience is beneficial but not essential. Experience delivering business-critical applications and integrations within a complex enterprise environment is more important.

Essential technical experience:

Commercial software development using .NET and C#
Microsoft Azure development and cloud-based solution delivery
React development
Modern JavaScript and/or TypeScript
Designing, developing and consuming RESTful APIs
Web services and API-led integration
Enterprise integration between internal and third-party systems
JSON and XML
Authentication and authorisation approaches
Integrating cloud-hosted and on-premise systems
SQL-based databases
Azure DevOps and Git
CI/CD pipelines and automated deployment
Unit, integration and automated testing
Agile software delivery
Technical documentation, deployment and operational handoverDesireable:

Microsoft Power Platform
Power Apps
Power Automate
InterSystems IRIS
InterSystems Caché
ObjectScript
InterSystems interoperability productions
InterSystems business services, business processes or business operations
Event-driven architecture
Middleware or integration platforms
Public-sector or regulated-environment delivery
Platform and legacy application modernisationPractical requirements:

Candidates must:

Be available from approximately 1 September 2026
Commit through the initial term ending 27 February 2027
Be comfortable travelling to Jersey when required
Be able to stay on-island for consecutive days if necessary
Provide both an offsite and an onsite day rate where applicable
Factor Jersey travel and accommodation into their onsite rate
Confirm current location, notice period and interview availability
Disclose other active interview processes or potential contract extensions
Confirm that no restrictions would prevent them accepting the assignmentFor more details, please submit your profile to register your interest, we will be in touch thereafter provided you are the right fit.

Please be aware because of the nature of this role, high application volumes are expected and whilst we do everything we can to get around to answering everybody, this cannot always be guaranteed.

Modis International Ltd acts as an employment agency for permanent recruitment and an employment business for the supply of temporary workers in the UK. Modis Europe Ltd provide a variety of international solutions that connect clients to the best talent in the world. For all positions based in Switzerland, Modis Europe Ltd works with its licensed Swiss partner Accurity GmbH to ensure that candidate applications are handled in accordance with Swiss law.

Both Modis International Ltd and Modis Europe Ltd are Equal Opportunities Employers.

By applying for this role your details will be submitted to Modis International Ltd and/ or Modis Europe Ltd. Our Candidate Privacy Information Statement which explains how we will use your information is available on the Modis website
Only candidates based in UK and eligible to work in UK are allowed