{"id":2846445,"url":"https://alion.io/job/optimum-solutions-application-maintenance-engineer","title":"Application Maintenance Engineer","company":{"id":3800114,"name":"Optimum Solutions","domain":"theoptimum.net","url":"https://alion.io/company/optimum-infosystem","size_band":"1001-5000","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"contractor","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Singapore"],"countries":["SG"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":5000,"max":7500,"currency":"SGD","period":"month","gross":true,"usd_annual":70344},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Kafka","optional":false},{"name":"Bitbucket","optional":false},{"name":"CI/CD","optional":false},{"name":"Hibernate","optional":false},{"name":"IBM MQ","optional":false},{"name":"Java","optional":false},{"name":"Jenkins","optional":false},{"name":"Linux","optional":false},{"name":"OpenShift","optional":false},{"name":"Oracle","optional":false},{"name":"Oracle ERP","optional":false},{"name":"Rest API","optional":false},{"name":"SonarQube","optional":false},{"name":"Spring Boot","optional":false},{"name":"SQL","optional":false},{"name":"COBOL","optional":true}],"status":"live","first_seen_at":"2026-10-19T00:00:00Z","employer_posted_date":null,"last_verified_at":"2026-10-19T00:00:00Z","board_verified":false,"closed_at":null,"days_open":3,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":3},"description":"ResponsibilitiesPerform root cause analysis and resolve application, batch processing, database and connectivity issues.\n\nDevelop, maintain and troubleshoot applications using Java, Spring Boot, REST APIs and microservices.\n\nSupport FIS Open Payment Framework (OPF), including defect remediation, troubleshooting and production deployment.\n\nConduct SIT, support UAT, validate fixes and coordinate production releases based on defect priority.\n\nMonitor application performance and troubleshoot issues across databases, middleware, operating systems and messaging platforms.\n\nManage incident, problem and defect lifecycles, ensuring timely resolution and compliance with closure KPIs.\n\nCoordinate with development, QA, infrastructure teams and vendors to maintain production stability and improve application quality.\n\nRequirementsDegree in Computer Science, Information Technology or a related discipline, with at least 6 years of relevant experience.\n\nStrong hands-on experience in Java, Spring Boot, REST APIs, microservices and Hibernate ORM.\n\nMandatory experience in FIS Open Payment Framework (OPF) troubleshooting, maintenance and deployment.\n\nExperience with SQL/Oracle databases, Linux/Solaris, JBoss, OpenShift and Apache.\n\nKnowledge of messaging and scheduling tools such as Kafka, IBM MQ, Connect:Direct and Control-M.\n\nExperience in production support, incident/problem management, CI/CD tools such as Jenkins, Bitbucket and SonarQube, and defect tracking using Remedy/JIRA.\n\nStrong troubleshooting, analytical skills; payment domain and SWIFT messaging experience are advantageous.\n\nSkills\ndelivering KPIs, Messaging Tools, Analytical Skills, SWIFT Payments, Correcting Software Defects, Java Applications, Payment Solutions, Root Cause Analysis, Plan Development, JBoss, Batch Processing, Production Support, Oracle Applications, Payment Handling, Hibernate ORM, Messaging Frameworks","description_format":"text","description_chars":1896,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-19T10:30:16Z"}],"visa":[],"liveness":{"score":54,"band":"ok","label":"Likely open","p_open":1,"p_active":0.542,"p_room":1,"age_days":3,"expected_fill_days":14,"reasons":["seen:3","agency","velocity","win:early"],"computed_at":"2026-10-22T06:10:10Z"},"pay":{"stated_usd_annual":70344,"is_top_pay":false},"html_url":"https://alion.io/job/optimum-solutions-application-maintenance-engineer","json_url":"https://alion.io/job/optimum-solutions-application-maintenance-engineer.json","meta":{"generated_at":"2026-10-22T16:01:32Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":16113,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-23T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3800114},"rest":"https://alion.io/mcp/rest/get_company?id=3800114"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Foptimum-solutions-application-maintenance-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Foptimum-solutions-application-maintenance-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Foptimum-solutions-application-maintenance-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/optimum-solutions-application-maintenance-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Foptimum-solutions-application-maintenance-engineer"}]}