{"id":1484087,"url":"https://alion.io/job/salt-senior-integration-developer-ibm-ace-iib-banking","title":"Senior Integration Developer (IBM ACE / IIB) – Banking","company":{"id":1935342,"name":"Salt","domain":"welovesalt.com","url":"https://alion.io/company/welovesalt","size_band":"201-500","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":{"grade":"A","score":95,"open_postings":1227,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":146,"computed_at":"2026-10-20T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":500,"max":600,"currency":"GBP","period":"day","gross":null,"usd_annual":198500},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"IBM MQ","optional":false},{"name":"Linux","optional":false},{"name":"Oracle","optional":false},{"name":"SQL","optional":false},{"name":".NET","optional":true},{"name":"C#","optional":true},{"name":"C++","optional":true},{"name":"COBOL","optional":true},{"name":"Java","optional":true},{"name":"Rest API","optional":true}],"status":"live","first_seen_at":"2026-07-28T00:00:00Z","employer_posted_date":"2026-07-28","last_verified_at":"2026-09-29T22:22:26Z","board_verified":false,"closed_at":null,"days_open":85,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":84},"description":"Back to all jobs\nApplications are now closed.\nSenior Integration Developer (IBM ACE / IIB) - Banking\nRef: JO-2607-362458\nUnited Kingdom, London \n\nTechnology \n\nIT \n\n5,000+ Employees \n\n£500.00 - £600.00 per day \n\nEnvironment:\n\nHybrid \n\nContract Type:\n\nContract \n\nStarts:\n\nASAP \n\nDuration:\n\n12 months \n\nSenior Integration Developer (IBM ACE / IIB) - Banking - London\nLocation\nLondon, UK (Hybrid)\nWorking Pattern: 8 days onsite per month, remainder remote\nEngagement: Umbrella company only\nRATE: £500 - £600\nThe Opportunity\nWe are looking for an experienced Senior IBM App Connect Enterprise (ACE) / IBM Integration Bus (IIB) Developer to join a highly skilled engineering team responsible for delivering and supporting enterprise integration and messaging solutions within a complex financial services environment.\nThis is an excellent opportunity to work on business-critical systems, designing, developing and maintaining high-performance integration services that support large-scale transaction processing. You’ll be involved throughout the full software development lifecycle, working closely with analysts, developers and business stakeholders to deliver robust, scalable and high-quality solutions.\nResponsibilities\nAs a Senior IBM ACE / IIB Developer, you will:\nDesign and develop integration solutions using IBM App Connect Enterprise (ACE) / IBM Integration Bus (IIB).\n\nProduce detailed technical designs and program specifications from high-level functional requirements.\n\nDevelop, test and deploy high-quality integration services and message flows.\n\nConfigure and develop solutions using IBM MQ.\n\nProduce deployment documentation and automated deployment scripts.\n\nCreate and execute unit and subsystem test plans.\n\nSupport application integration and production deployments.\n\nParticipate in code reviews, design reviews and technical discussions.\n\nPerform proof-of-concepts to validate solution designs and meet performance and throughput requirements.\n\nTroubleshoot production issues and provide ongoing application support.\n\nWork collaboratively within Agile delivery teams to deliver solutions on time and to a high standard.\n\nEssential Skills & Experience\nStrong commercial experience with IBM App Connect Enterprise (ACE v12) or IBM Integration Bus (IIB v10+).\n\nExperience developing and supporting IBM MQ / WebSphere MQ solutions.\n\nStrong SQL and PL/SQL skills with Oracle databases.\n\nExperience working with Oracle database design.\n\nGood knowledge of Linux (RHEL) environments.\n\nExperience with XML and JSON message formats.\n\nStrong understanding of enterprise integration and messaging architecture.\n\nExperience across the full Software Development Lifecycle (SDLC).\n\nAbility to produce high-quality technical documentation and solution designs.\n\nStrong analytical and problem-solving skills.\n\nDesirable Skills\nExperience with any of the following would be advantageous:\nSWIFT ISO 15022 and/or ISO 20022 messaging standards.\n\nFinancial services, banking, payments or capital markets.\n\nC#\n\n.NET\n\nJava\n\nC++\n\nLinux Shell Scripting\n\nREST APIs\n\nPerformance tuning and optimisation of integration solutions.\n\nWhat We’re Looking For\nWe’re looking for someone who is:\nA collaborative team player with excellent communication skills.\n\nSelf-motivated and able to work independently.\n\nPassionate about delivering high-quality software.\n\nComfortable working within a fast-paced Agile environment.\n\nMeticulous, organised and detail-oriented.\n\nAble to manage multiple priorities while maintaining high technical standards.\n\nKeen to learn new technologies and broaden their technical expertise.\n\nWorking Arrangements\nLocation: London\n\nHybrid: 8 days onsite per month, remainder remote.\n\nEngagement: Umbrella company only.\n\nIf you’re an experienced IBM ACE / IIB professional looking to work on complex enterprise integration platforms within a collaborative and technically challenging environment, we’d be delighted to hear from you.\n*Rates depend on experience and client requirements","description_format":"text","description_chars":3990,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Financial Services"],"lifecycle":[{"event":"open","at":"2026-09-29T22:01:35Z"}],"visa":[],"liveness":{"score":16,"band":"cold","label":"Long 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