Temenos Infinity L3 Support Engineer – Java / Digital Banking Milton Keynes, England, United Kingdom Posted 2026-05-28 We are hiring on behalf of a client for a Temenos Infinity L3 Support Engineer on a 6-month contract based in Milton Keynes, UK.Role DetailsPosition: Temenos Infinity L3 Support EngineerHiring Mode: 3PTDuration: 6 months Location: Milton Keynes, UKRate: £3,575, Inside IR35Role Summary Our client is looking for a skilled Temenos Infinity L3 Support Engineer with strong Java, microservices and API troubleshooting experience to support digital banking applications.This role focuses on production support, defect resolution and root cause analysis across the Temenos Infinity platform and its integrations with core banking systems.Key ResponsibilitiesAnalyze and resolve L3 production defects in the Temenos Infinity platformPerform detailed root cause analysis and implement permanent fixesDebug issues across Java-based microservices, APIs and UI layersInvestigate and resolve integration issues between Infinity and T24Manage incident, problem and change tickets in line with SLAsProvide code-level fixes, patches and minor enhancementsSupport production releases, deployments and post-release validationCollaborate with L2 support, QA and business teams to resolve issuesMonitor application performance and proactively identify potential issuesRequired SkillsStrong Java experience, including Spring Boot and microservicesHands-on experience with Temenos Infinity / Digital BankingStrong API troubleshooting skills, including REST, JSON and authenticationExcellent debugging, log analysis and problem-solving skillsExperience in L2/L3 production support environmentsUnderstanding of Temenos T24 integrations or similar core banking systemsFamiliarity with incident management tools such as ServiceNow or JiraKnowledge of monitoring and logging tools such as Splunk or ELKPreferred SkillsExposure to Infinity modules such as payments, onboarding or channelsUnderstanding of retail or digital bankingExperience with CI/CD pipelines and release managementFamiliarity with AWS or AzureKnowledge of ITIL processesExperience Required8–10 years of relevant experienceMinimum 2+ years of Temenos Infinity experience, either in support or developmentPrior L2/L3 support experience preferredImportant Note This is a Java + Temenos Infinity L3 support role focused on production support, defect resolution and RCA. It is not a pure development role.Disclaimer: AI tools may be used as part of the application screening and evaluation process. Final hiring decisions remain subject to human review. Frequently asked questionsHow do I apply for the Temenos Infinity L3 Support Engineer – Java / Digital Banking role?You can apply directly on this page — submit your CV and contact details through the application form, no account required.