Integration Engineer - Java 8, MQTT
| Posting date: | 05 February 2026 |
|---|---|
| Salary: | £400.0 to £450.0 per day |
| Additional salary information: | £market rate (Outside IR35) |
| Hours: | Full time |
| Closing date: | 12 February 2026 |
| Location: | London, London, EC2V 6DN |
| Company: | Hays Specialist Recruitment |
| Job type: | Contract |
| Job reference: | 4768296_1770286541 |
Summary
Integration Engineer - Java 8, MQTT
£Market Rate (Outside IR35)
Remote / London
3 Months
My client is seeking an Integration Engineer to design and implement an integration layer using Java 8 and MQTT, supporting real-time processing and back-office updates. This is a hands-on engineering role involving development, testing, and close collaboration with customer stakeholders as the POC evolves into a production-ready solution.
Key requirements:
- Strong commercial Java 8 development experience
- Proven background with MQTT integrations
- Experience with PostgreSQL databases
- Comfortable working in SuSE Linux Enterprise environments
- Ability to deliver clean, testable, maintainable code
- Strong communication skills for customer interactions
Nice to have:
- Flexibility to get to office
- Previous work on proof-of-concept or rapid prototyping projects
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