Senior Integration Engineer - Leeds - £395p/d Inside IR35

Senior Integration Software Engineer – Contract
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Location: Leeds / Wakefield – hybrid, with at least 1 day per week onsite and occasional regional travel\n
Rate: £395 per day – Inside IR35\n
Contract: 1 September 2026 to 16 November 2026\n
Hours: Full-time\n
\n We are looking for a Senior Integration Software Engineer to support a large-scale integration programme, designing and delivering secure, reliable integrations across complex enterprise systems.\n
\n The Role You will work within a multidisciplinary delivery team alongside Architects, Business Analysts, Delivery Managers and technical stakeholders. Responsibilities will include:\n
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• Developing secure APIs, integration services and reusable integration components
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• Building interfaces using FHIR, HL7 v2.x and RESTful APIs
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• Integrating with complex enterprise platforms, including EPR and PAS systems
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• Supporting integration testing, deployment, go-live and early-life support
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• Troubleshooting integration issues across multiple systems
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• Developing automated unit, integration and API tests
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• Working within Agile delivery and CI/CD environments
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• Producing technical, API and interface documentation
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• Supporting code reviews and maintaining high software engineering standards
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Essential Experience \n

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• Strong enterprise software engineering and systems integration background
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• Commercial experience with FHIR
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• Commercial experience with HL7 v2.x
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• Strong RESTful API and web services development experience
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• Experience integrating multiple complex systems
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• Cloud-based application development
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• Git, CI/CD pipelines and automated testing
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• Secure software development practices
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• Agile and DevOps delivery experience
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• Strong technical troubleshooting skills
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Experience with integration engines, middleware and event-driven architecture would also be beneficial.\n
\n Candidates must be comfortable attending the Leeds/Wakefield location at least once per week, with some additional regional travel for technical workshops, testing and implementation activities.\n
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