1 to 25 of 90 Mainframe Jobs in the UK

and our communities. The Role Kyndryl Consult is the fastest-growing business within the organisation and instrumental to the company’s strategic growth objectives. We are looking for talented Mainframe Consultants, Mainframe Architects, and Mainframe Engineers who are passionate about delivering high-impact solutions for our clients. You will bring deep expertise in mainframe technologiesand enterprise IT systems, combining hands … roles, you’ll act as a trusted advisor and technical leader, translating complex technical challenges into actionable solutions for clients. You’ll design, implement, and modernise IT infrastructure and mainframe environments, while integrating cloud and enterprise systems to deliver scalable, innovative solutions. You’ll collaborate closely with clients, delivery teams, and other technical specialists to ensure every solution meets business … technology. This is your chance to work on complex, high-profile engagements while advancing your skills and career in a fast-growing, dynamic organisation. Key Responsibilities Lead and shape mainframe solutions across complex enterprise environments, bridging business strategy and technology execution. Design, implement, and modernize enterprise IT applications that are scalable, secure, and high performing. Drive DevOps and DevSecOps practices More ❯

Contract Role - Mainframe Assembler Developer - Contract - Leeds/Halifax/Edinburgh/Hybrid - 06 Months Initial We are currently seeking a skilled and proactive Mainframe Assembler Developer to join a leading financial institution. You will play a key role in supporting and enhancing Legacy systems critical to banking operations. The ideal candidate will have strong technical expertise in Assembler and … related Mainframe technologies, combined with solid experience in high-volume, regulated environments. Role Overview: * Job Title: Mainframe Assembler Developer * Location: Leeds/Halifax/Edinburgh/Hybrid (2 days per week onsite) * Contract Type: Contract * Duration: 06 months initially * Sector: Banking Required Skills & Experience: * Proven experience with IBM Mainframe Assembler (HLASM) development. * Strong understanding of z/OS, JCL, TSO … written and verbal. Nice to Have: * Knowledge of regulatory and compliance requirements in the banking domain. * Exposure to system modernization or migration projects. * Experience with automated testing tools for Mainframe environments. Please feel free to contact myself - Daisy Nguyen see below) ) at Gibbs Consulting for a confidential chat to know more details about the role. Please also note: Due to More ❯

Contract Role - Mainframe Assembler Developer – Contract – Leeds/Halifax/Edinburgh/Hybrid – 06 Months Initial We are currently seeking a skilled and proactive Mainframe Assembler Developer to join a leading financial institution. You will play a key role in supporting and enhancing legacy systems critical to banking operations. The ideal candidate will have strong technical expertise in Assembler and … related mainframe technologies, combined with solid experience in high-volume, regulated environments. Role Overview: Job Title: Mainframe Assembler Developer Location: Leeds/Halifax/Edinburgh/Hybrid (2 days per week onsite) Contract Type: Contract Duration: 06 months initially Sector: Banking Required Skills & Experience: Proven experience with IBM Mainframe Assembler (HLASM) development. Strong understanding of z/OS , JCL , TSO … written and verbal. Nice to Have: Knowledge of regulatory and compliance requirements in the banking domain. Exposure to system modernization or migration projects. Experience with automated testing tools for mainframe environments. Please feel free to contact myself – Daisy Nguyen at Gibbs Consulting for a confidential chat to know more details about the role. Please also note: Due to the volume More ❯

Mandatory Skills Description: 8+ years in enterprise application architecture, with at least 3 years in modernization. Proven ability to assess legacy estates and define future-state architectures. Proficiency in mainframe tech (COBOL, DB2, CICS) and modern stacks (Java, Spring, microservices). Exposure to GenAI use cases in application engineering and code conversion. Strong client communication, technical documentation, and stakeholder alignment More ❯

Mandatory Skills Description: 8+ years in enterprise application architecture, with at least 3 years in modernization. Proven ability to assess legacy estates and define future-state architectures. Proficiency in mainframe tech (COBOL, DB2, CICS) and modern stacks (Java, Spring, microservices). Exposure to GenAI use cases in application engineering and code conversion. Strong client communication, technical documentation, and stakeholder alignment More ❯

Mandatory Skills Description: 8+ years in enterprise application architecture, with at least 3 years in modernization. Proven ability to assess legacy estates and define future-state architectures. Proficiency in mainframe tech (COBOL, DB2, CICS) and modern stacks (Java, Spring, microservices). Exposure to GenAI use cases in application engineering and code conversion. Strong client communication, technical documentation, and stakeholder alignment More ❯

analyse, and document business and technical requirements, transforming them into actionable deliverables. Develop and maintain the benefits realisation profile, ensuring traceability of business value and ownership. Provide expertise on Mainframe LAM processes, data, and roles. Define clear and testable acceptance criteria to validate delivery outcomes. Analyse the Target Operating Model (TOM) and migration strategy to refine scope, identify changes, and More ❯

a pivotal role in integrating advanced technologies that power resilient, scalable systems—critical to the success of our enterprise-wide infrastructure and application services. If you're passionate about mainframe systems, thrive in high-impact environments, and want to shape the future of banking technology, we’d love to hear from you. To be successful as an IMS Systems Programmer More ❯

a pivotal role in integrating advanced technologies that power resilient, scalable systems-critical to the success of our enterprise-wide infrastructure and application services. If you're passionate about mainframe systems, thrive in high-impact environments, and want to shape the future of banking technology, we'd love to hear from you. To be successful as an IMS Systems Programmer More ❯

has already delivered millions of pounds of benefits. Our future plans are no less ambitious. Over the next 3-5 years we will simplify our Group Finance technology, removing mainframes, increasing integrations and upgrading systems, enabling Tesco to benefit from the latest innovations in the market, including AI. We are looking for an experienced Senior Technical Programme Manager to join More ❯

has already delivered millions of pounds of benefits. Our future plans are no less ambitious. Over the next 3-5 years we will simplify our Group Finance technology, removing mainframes, increasing integrations and upgrading systems, enabling Tesco to benefit from the latest innovations in the market, including AI. We are looking for an experienced Senior Technical Programme Manager to join More ❯

has already delivered millions of pounds of benefits. Our future plans are no less ambitious. Over the next 3-5 years we will simplify our Group Finance technology, removing mainframes, increasing integrations and upgrading systems, enabling Tesco to benefit from the latest innovations in the market, including AI. We are looking for an experienced Senior Technical Programme Manager to join More ❯

has already delivered millions of pounds of benefits. Our future plans are no less ambitious. Over the next 3-5 years we will simplify our Group Finance technology, removing mainframes, increasing integrations and upgrading systems, enabling Tesco to benefit from the latest innovations in the market, including AI. We are looking for an experienced Senior Technical Programme Manager to join More ❯

has already delivered millions of pounds of benefits. Our future plans are no less ambitious. Over the next 3-5 years we will simplify our Group Finance technology, removing mainframes, increasing integrations and upgrading systems, enabling Tesco to benefit from the latest innovations in the market, including AI. We are looking for an experienced Senior Technical Programme Manager to join More ❯

Senior Site Reliability Coach 6 months Remote £Negotiable - INSIDE IR35 Tech Stack Multiple Platforms and Applications AWS and Azure - Cloud Mainframe skills would be handy Latest applications on Cloud Dev Ops skills would be helpful Attitude of being part of the team and owning the outcomes Advocate - to change the culture to SRE Disclaimer: This vacancy is being advertised by More ❯

level knowledge and experience with technical deployments of exposure/vulnerability management systems for large enterprises, across a diverse technology stack (IaaS/PaaS/SaaS/physical/mainframe/hybrid-cloud) and delivery lifecycles (Project/COTS applications, DevOps) Expertise with Qualys and other vulnerability and exposure management technologies Expertise in the full vulnerability management lifecycle Vendor and More ❯

level knowledge and experience with technical deployments of exposure/vulnerability management systems for large enterprises, across a diverse technology stack (IaaS/PaaS/SaaS/physical/mainframe/hybrid-cloud) and delivery lifecycles (Project/COTS applications, DevOps) Expertise with Qualys and other vulnerability and exposure management technologies Expertise in the full vulnerability management lifecycle Vendor and More ❯

level knowledge and experience with technical deployments of exposure/vulnerability management systems for large enterprises, across a diverse technology stack (IaaS/PaaS/SaaS/physical/mainframe/hybrid-cloud) and delivery lifecycles (Project/COTS applications, DevOps) Expertise with Qualys and other vulnerability and exposure management technologies Expertise in the full vulnerability management lifecycle Vendor and More ❯

seeking an AWS Migration Consultant. AWS Migration Consultant (Java/BluAge) DB (DATABASE) The ideal candidate would have: Java and Blu Age experience 8+ years experience good knowledge with Mainframe organization to AWS 6 month initial contract AWS Migration Consultant/Amazon Webservices Migration Consultant More ❯

seeking an AWS Migration Consultant. AWS Migration Consultant (Java/BluAge) DB (DATABASE) The ideal candidate would have: Java and Blu Age experience 8+ years experience good knowledge with Mainframe organization to AWS 6 month initial contract AWS Migration Consultant/Amazon Webservices Migration Consultant More ❯

seeking an AWS Migration Consultant. AWS Migration Consultant (Java/BluAge) DB (DATABASE) The ideal candidate would have: Java and Blu Age experience 8+ years experience good knowledge with Mainframe organization to AWS 6 month initial contract AWS Migration Consultant/Amazon Webservices Migration Consultant More ❯

seeking an AWS Migration Consultant. AWS Migration Consultant (Java/BluAge) DB (DATABASE) The ideal candidate would have: Java and Blu Age experience 8+ years experience good knowledge with Mainframe organization to AWS 6 month initial contract AWS Migration Consultant/Amazon Webservices Migration Consultant More ❯

seeking an AWS Migration Consultant. AWS Migration Consultant (Java/BluAge) DB (DATABASE) The ideal candidate would have: Java and Blu Age experience 8+ years experience good knowledge with Mainframe organization to AWS 6 month initial contract AWS Migration Consultant/Amazon Webservices Migration Consultant More ❯

requirements. Essential Skills and Experience: Strong experience with COBOL development. Hands-on experience with ICL VME and PL/SQL . Knowledge of structured programming and batch processing in mainframe environments. Ability to work effectively in a remote UK-based team. BPSS minimum security clearance (SC preferred). This is an excellent opportunity for a skilled COBOL developer to contribute More ❯

key business stakeholders. Manage complex, high-risk implementations requiring integration across multiple parties for safe delivery. Coordinate the integration process and implementation events across shared infrastructure (e.g., Upgrading the Mainframe). Provide governance expertise for changes across multiple labs, supporting the Product Owner as needed. Your Agile Mindset: You will be a key player in our agile team, utilising agile More ❯