Integration Engineer - Java 8, MQTT Market Rate (Outside IR35)Remote / London3 MonthsMy 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 experienceProven background with MQTT integrationsExperience with PostgreSQL databasesComfortable working in SuSE Linux Enterprise environmentsAbility to deliver clean, testable, maintainable codeStrong communication skills for customer interactionsNice to have:Flexibility to get to officePrevious work on proof-of-concept or rapid prototyping projectsIf you''re interested in this role, click ''apply now'' to forward an up-to-date copy of your CV, or call us now.If this job isn''t quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the TandC''s, Privacy Policy and Disclaimers which can be found at (url removed)