26 to 47 of 47 Mainframe Jobs in the UK

. Collaborate with Risk Management teams to ensure designs meet strict Credit, Market, and IT Ops risk standards. Modernize legacy environments, including Mainframe (z/OS) and File Transmission workflows (IBM SFG/SSP). Work within an Agile framework to deliver high-quality, documented solutions. What We're Looking … Ansible and Jenkins. Mastery of Shell Scripting and at least one high-level language (Python or Go). Experience with BMC Control-M or Mainframe job execution is highly desirable. A "Consultant Mindset"-the ability to communicate complex ideas to diverse global stakeholders. Logistics: Location: Sheffield (Hybrid - 3 days ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

Rate Inside IR35 Remote, with occasional travel to London, Manchester, Newcastle Role Purpose The Principal Engineer will provide senior technical leadership for a complex mainframe modernisation programme characterised by a large case load, high throughput, and significant scalability and resilience requirements. The role is accountable for shaping and assuring solution … including Kubernetesbased platforms. Deep handson experience with Java, Spring Boot, and Node.js, building scalable and resilient backend services. Experience modernising or integrating with mainframe or legacy enterprise systems in highvolume environments. Proven ability to enforce engineering standards and operate effectively within highgovernance, regulated, or public sector contexts. Strong understanding ...

review forums Ensure secure and efficient cloud-to-on-premises network connectivity and data flow Work with both cloud-based and legacy/mainframe database technologies Contribute to continuous improvement of data engineering practices and standards Required Skills & Experience Strong hands-on experience with AWS data services (S3, Lambda, EventBridge … Qlik Replicate) Experience designing and building APIs hosted on AWS Understanding of cloud networking, particularly cloud-to-on-premises routing Familiarity with cloud and mainframe database technologies Experience working in Agile environments using Scrum or Kanban methodologies Desirable Skills Strong problem-solving and analytical skills Excellent communication and stakeholder management ...

supporting a client in the financial services sector in hiring a Senior z/Linux Engineer to join their Core Infrastructure Platform team within Mainframe Services. JOB OVERVIEW This role is focused on the support, stability and continuous improvement of enterprise Linux environments running on IBM Z. You will work … patching, upgrades and vulnerability remediation across Linux platforms Support platform lifecycle management, ensuring stability, performance and compliance Work closely with adjacent infrastructure teams (mainframe, storage, network, security) Contribute to platform improvements, upgrades and optimisation initiatives Produce and maintain technical documentation, runbooks and operational procedures Participate in on-call/standby ...

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 ...

party payment processing capabilities, and scheme-driven transformations. Responsibilities Lead solution architecture across end-to-end payments migration programmes Own data architecture bridging legacy (mainframe) and target platforms, including mapping, extraction, and migration controls Design and support migration of payment processing capabilities operated by third-party providers Define and validate … processing capabilities from third-party providers Solid legacy bank experience Deep understanding of payment lifecycles and message flows across systems Strong experience working with mainframe-integrated architectures and constrained legacy environments Hands-on experience with IBM MQ/messaging middleware (MQMTMX environments) Experience with data migration in high-volume banking ...

Title: Mainframe Engineer - Cobol Specialist Location: Chester, UK - 3 days a week - non negotiable Job Description A leading bank seeks a Mainframe Engineer specialising in Cobol to join their team for a long-term tenure. This role involves providing support and resolving complex production and technical issues. Responsibilities Provide technical … support for complex production issues. Resolve problems related to mainframe operations. Manage incidents efficiently and effectively. Essential Skills Proficiency in Cobol. Experience with MQ and IMS. Strong production support skills. Competence in incident management. Why Work Here? The company offers a stable and long-term career path for candidates interested ...

part in transitioning legacy platforms to new architectures while minimising risks to business-critical payment processing. Key Responsibilities: Own data and technical architecture bridging mainframe and target platforms Define data mappings, extraction approaches, and migration controls Support safe, controlled execution of payments migrations within regulated environments Identify, document, and escalate … standard implementations Ability to reconcile documented designs with actual system behaviour Comfortable delivering within constraints rather than ideal-state redesigns Technical Familiarity Mainframe-integrated architectures Messaging technologies such as IBM MQ and MT/MX translation layers Communication & Stakeholder Management Ability to engage confidently with subject matter experts, engineers ...

global technology services provider seeks a skilled Solution Architect to deliver pre-sales support for mainframe application modernization solutions. The role requires expertise in mainframe systems, cloud technologies, and strong communication skills. You will engage with clients to design and present end-to-end modernization strategies and serve ...

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 ...