13 of 13 Mainframe Jobs in London

large-scale system projects. This will include: Reviews, analysing, and modifying programming systems including encoding, testing, debugging and installing for a large-scale Mainframe computer system. Essential Duties and Responsibilities for the Senior C++ Developer/Software Engineer: Maintains project estimates and project management timelines for multiple major projects. Verifies ...

large-scale system projects. This will include: Reviews, analysing, and modifying programming systems including encoding, testing, debugging and installing for a large-scale Mainframe computer system. Essential Duties and Responsibilities for the Senior C++ Developer/Software Engineer: Maintains project estimates and project management timelines for multiple major projects. Verifies ...

Mainframe Engineer Hybrid Working – London – 2 days a week on site. Financial Services Lorien's leading banking client is looking for a n experienced Mainframe Engineer, this person will support the test environments to enable delivery of features to mobile/online banking customers. The person will have hands … experience with Mainframe Technologies such as CICS and DB2, along with an understanding of AWS Services This role is based in London. This role will be Via Umbrella. Working in a Hybrid Model of 1 day a week on site. Key Responsibilities: Provide expert support and timely resolution of environment ...

Experience being the lead architect across a number of domains Proven ability to document and articulate complex architectures Experience working on legacy migration programmes (mainframe to cloud) Proven experience designing analytical warehouses Ability to present and communicate to stakeholders across differing disciplines and level of seniority Why Work ...

Architect to spearhead a high-stakes transition of their core transaction engine. You will essentially be the primary architect bridging the gap between legacy mainframe foundations and modern target p click apply for full job details ...

need a specialist who understands that migrating a payment engine is a high-wire act. You will own the bridge between our legacy Mainframe and target platforms, ensuring that every message from legacy MT to modern MX flows with 100% integrity. Core Responsibilities Architectural Ownership: Lead the 'Strangler Fig' migration ...

Title Client Development Partner - Analytics Location Central London - Mainframe (Hybrid) Department Growth Reporting To Amanda Barnard (currently on maternity leave – report directly to Emily Swann) Job Purpose To grow Advanced Analytics non‐recurring revenue bookings within the FMCG, Foods and Fashion client areas while strengthening Worldpanel’s overall position ...

Urgent contract opportunity with a leading German client for a Mainframe Modernization Specialist , working remotely from the UK (aligned to German business hours). Role Overview: Location: Remote (UK-based) Contract: Inside IR35 Start: Immediate Key Requirements: Strong experience in mainframe re-hosting/modernization Hands-on migration of COBOL ...

Mainframe Middleware Engineer - 6-Month Contract - Hybrid (London, or Edinburgh) We are seeking a Mainframe Middleware Infrastructure Engineer with strong expertise in CICS Liberty environments on z/OS. This role focuses on infrastructure engineering rather than application development, supporting modern, secure, and highly available Java workloads within CICS. … will work at the intersection of traditional Mainframe systems and contemporary integration and DevOps practices. Key Responsibilities Provide deep systems engineering expertise across CICS running on z/OS, including runtime behavior and infrastructure design Configure, maintain, and optimize IBM WebSphere Liberty within CICS (CICS Liberty runtime) Design and support ...

Urgent contract opportunity with a leading German client for a Mainframe Modernization Specialist , working remotely from the UK (aligned to German business hours). Role Overview: Location: Remote (UK-based) Contract: Inside IR35 Start: Immediate Key Requirements: Strong experience in mainframe re-hosting/modernization Hands-on migration of COBOL ...

Architect to spearhead a high-stakes transition of their core transaction engine. You will essentially be the primary architect bridging the gap between legacy mainframe foundations and modern target platforms. This ideal candidate for this role will be someone who understands the granular detail of how a message moves from … Essential Skills UK Payment Rails: Expert-level BACS & Faster Payments (FPS) . Global Messaging: SWIFT & SEPA mastery, including ISO 20022 (MT/MX) . Mainframe Core: IBM DB2 specialist (Query Optimisation, Partitioning, Archiving). Data Migration: Hands-on Extraction , Mapping , and Lineage for high-throughput systems. Risk & Governance: CASS ...

Architect to spearhead a high-stakes transition of their core transaction engine. You will essentially be the primary architect bridging the gap between legacy mainframe foundations and modern target platforms. This ideal candidate for this role will be someone who understands the granular detail of how a message moves from … Essential Skills UK Payment Rails: Expert-level BACS & Faster Payments (FPS) . Global Messaging: SWIFT & SEPA mastery, including ISO 20022 (MT/MX) . Mainframe Core: IBM DB2 specialist (Query Optimisation, Partitioning, Archiving). Data Migration: Hands-on Extraction , Mapping , and Lineage for high-throughput systems. Risk & Governance: CASS ...

need a specialist who understands that migrating a payment engine is a high-wire act. You will own the bridge between our legacy Mainframe and target platforms, ensuring that every message from legacy MT to modern MX flows with 100% integrity. Core Responsibilities Architectural Ownership: Lead the 'Strangler Fig' migration … enforce CISA-aligned audit frameworks and CASS regulatory controls to ensure zero-loss migration. Pragmatic Legacy Integration: Navigate the 'documented vs. actual' reality of Mainframe systems, building executable solutions within existing technical constraints. Technical Requirements Payments Flow Expertise: Ability to demonstrate design leadership across the full lifecycle: Gateway/Connectivity ...