1 to 25 of 49 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 (dnguyen@gibbsconsulting.com) 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 ❯

application architecture and modernisation projects. Strong knowledge of public and hybrid cloud platforms. Expertise in microservices, containerization (Docker, Kubernetes), and API design. Familiarity with legacy systems (e.g., monolithic applications, mainframes) and migration strategies. Experience with Agile and DevOps practices and CI/CD pipelines. Excellent communication and stakeholder management skills. Ability to adapt quickly to new technologies Awareness of emerging More ❯

acquire the remainder on the job. TAL, pTAL, COBOL85, SCOBOL, TACL, C/C++. Guardian, OSS, EMS, DDL, Escribe, FUP, TS/MP (Pathway), Inspect, TMF. Experience of IBM mainframe systems would be beneficial. Benefits Competitive salary based on demonstrated skills. Flexible working hours and location. Multicultural and friendly working environment. The opportunity to be a key member of our 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 ❯

proactive attitude towards learning new technologies and tools in the field of functional testing. Preferred Qualifications (Nice to have): Experience of testing the integration of Identity Solutions (SailPoint) with Mainframe security sub-systems e.g. RACF Certification in software testing (e.g., ISTQB Certified Tester) or relevant professional certifications. Knowledge of continuous integration/continuous deployment (CI/CD) pipelines and tools More ❯

proactive attitude towards learning new technologies and tools in the field of functional testing. Preferred Qualifications (Nice to have): Experience of testing the integration of Identity Solutions (SailPoint) with Mainframe security sub-systems e.g. RACF Certification in software testing (e.g., ISTQB Certified Tester) or relevant professional certifications. Knowledge of continuous integration/continuous deployment (CI/CD) pipelines and tools 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 ❯

Mainframe Engineer - OPSMVS - CA - REXX - 6 months - UK based remote I have an immediate opportunity for a Mainframe Engineer to join an ongoing migration project moving from Broadcom to BMC products. This is a 6-month contract role, offering fully remote working, but applicants must be based in the UK. I am keen to speak with candidate who have: Strong … knowledge of Mainframe systems, including: OPSMVS CA-View and CA-Deliver REXX General Mainframe operations (JCL, ISPF, JES2, z/OS) Proven experience with Mainframe System Automation software administration. Desirable Skills Familiarity with: BMC AMI Ops Automation and Control-M Output Management I-Dash for CA7 administration SAS, REST APIs, and Windows Server ServiceNow and ITIL processes Agile methodologies Basic 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 ❯

NEW CONTRACT ROLE - ENDEVOR ADMINISTRATOR (MAINFRAME SUPPORT) UK-Based Candidates Only | 6-Month Contract | Hybrid - 2 Days Onsite (Manchester) To apply, email: THE OPPORTUNITY We're looking for an experienced Endevor Administrator to join a leading financial services organisation on a 6-month contract. This role will be responsible for managing and maintaining mainframe source code management environments using CA … Endevor , ensuring smooth release, version control, and deployment processes across multiple environments. This position is ideal for candidates with strong mainframe administration and Endevor configuration experience, who thrive in collaborative development and release management environments. THE ROLE Administer and maintain CA Endevor environments across multiple LPARs. Manage version control and change management processes for mainframe applications. Create and maintain processor … production deployments. Maintain accurate documentation for procedures, configurations, and troubleshooting. Ensure compliance with internal security and regulatory standards. TECHNICAL SKILLS/REQUIREMENTS 8+ years' experience in Endevor administration or mainframe application support . Strong working knowledge of JCL, TSO/ISPF, REXX, and CLIST . Experience with ACF2 or RACF for security administration. Familiarity with backup and storage management tools 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 ❯

IBM Mainframe Cobol Senior Developer - East Midlands to £54K + bonus + pension + other great corporate benefits inc relocation package Excellent opportunity to join one of the UK's most successful FTSE100 companies as an IBM Cobol Senior Developer. You will need to have a minimum of 8 years experience as an IBM Cobol Developer and the ability to … be advantageous. Key skills: Cobol/CICS Cobol Adabas (training will be given) Natural (training will be given) DB2 SQL JCL Desirable: zOS connect Websphere MQ XML JSON IBM Mainframe Cobol Senior Developer - East Midlands More ❯

IBM Mainframe Cobol Senior Developer - East Midlands to £54K + bonus (c10%) + pension + other great corporate benefits inc relocation package Excellent opportunity to join one of the UK's most successful FTSE100 companies as an IBM Cobol Senior Developer. You will need to have a minimum of 8 years recent experience as an IBM Cobol Senior Developer and … be advantageous. Key skills: Cobol/CICS Cobol Adabas (training will be given) Natural (training will be given) DB2 SQL JCL Desirable: zOS connect WebSphere MQ XML JSON IBM Mainframe Cobol Senior Developer - East Midlands More ❯

the technical team on development and implementation journeys. The role is centered on enabling and securing data flows between various enterprise systems, including mobile applications, cloud services, and legacy mainframe systems click apply for full job details More ❯

at the heart of Bank Chief Technology Office (CTO) – operating, maintaining & transforming the technology infrastructure used by the rest of the bank to run applications & services (servers, storage, databases, mainframe, middleware, internal cloud & automation technologies amongst others). In this role, you will: • Support financial management activities for Enterprise Infrastructure – across both expenses & internal customer charges: o Annual planning/ More ❯

and implement action plans, follow up and meet set targets. Work with O/S on accounts as applicable. Sales Administration and systems – Effectively use all computer systems - SAM, Mainframe, IAP, WIRE, Lotus Notes, etc. Good understanding and proficient use of Microsoft Excel. Manage PC filing, other paperwork, processes and engage relevant internal support to provide an efficient and timely More ❯

An exciting opportunity has arisen for an experienced Mainframe DB2 System Programmer to join a dynamic infrastructure engineering team, supporting mission-critical applications and data systems across enterprise platforms. This role is ideal for a professional who thrives on ensuring reliability, scalability, and performance in complex environments while embracing automation and continuous improvement. The Role The Mainframe DB2 System Specialist … will be responsible for building, maintaining, and enhancing mainframe infrastructure that underpins key business operations. Working with cutting-edge tools and technologies, the role involves delivering secure, resilient, and automated solutions that support large-scale data systems and business applications. Key Responsibilities Install, maintain, and upgrade IBM DB2 and associated products, including DB2 CA, DB2 Connect, and Data Studio. Oversee … the performance, availability, and security of mainframe infrastructure and DB2 databases. Develop and implement automation scripts to streamline operational processes and reduce manual intervention. Monitor system health, identify issues, and resolve incidents efficiently using data-driven approaches. Collaborate closely with engineers, architects, and product teams to deliver scalable, high-performing solutions aligned with business goals. Apply best practices in system More ❯

Contract Role: Endevor Administrator (Mainframe) Location: Hybrid - Manchester (2 days onsite per week) Duration: 6 months initial contract Rate: £350/day (Inside IR35) Eligibility: BPSS clearance required We are seeking an experienced Endevor Administrator to manage and support Mainframe source code management using CA Endevor. The successful candidate will be responsible for maintaining environments, supporting development teams, and ensuring … smooth release and deployment processes across multiple LPARs. This role offers the opportunity to work within a collaborative technical environment, contributing to essential Mainframe and release management operations. Key Responsibilities Administer and maintain CA Endevor environments across multiple LPARs. Manage version control and change management processes for Mainframe applications. Create and maintain processor groups, element types, and Endevor exits. Perform … production deployments. Document procedures, configurations, and troubleshooting steps. Ensure compliance with internal controls and regulatory standards. Required Skills and Experience Minimum of 8 years' experience in Endevor administration or Mainframe system support. Strong working knowledge of JCL, TSO/ISPF, REXX, and CLIST. Experience with ACF2 or RACF for security administration. Familiarity with Tivoli Storage Manager or similar backup tools. More ❯

Contract Role: Endevor Administrator (Mainframe) Location: Hybrid - Manchester (2 days onsite per week) Duration: 6 months initial contract Rate: £350/day (Inside IR35) Eligibility: BPSS clearance required We are seeking an experienced Endevor Administrator to manage and support mainframe source code management using CA Endevor. The successful candidate will be responsible for maintaining environments, supporting development teams, and ensuring … smooth release and deployment processes across multiple LPARs. This role offers the opportunity to work within a collaborative technical environment, contributing to essential mainframe and release management operations. Key Responsibilities Administer and maintain CA Endevor environments across multiple LPARs. Manage version control and change management processes for mainframe applications. Create and maintain processor groups, element types, and Endevor exits. Perform … production deployments. Document procedures, configurations, and troubleshooting steps. Ensure compliance with internal controls and regulatory standards. Required Skills and Experience Minimum of 8 years’ experience in Endevor administration or mainframe system support. Strong working knowledge of JCL, TSO/ISPF, REXX, and CLIST. Experience with ACF2 or RACF for security administration. Familiarity with Tivoli Storage Manager or similar backup tools. More ❯

Mainframe System Automation Engineer Start: 11/24/2025 End: 05/29/2026 Inside IR35 Nottingham Mainframe System Automation Engineer (OPSMVS) required for an initial 12 - 18-month role with our blue-chip Financial Services client. The right candidate must have demonstrable experience in Mainframe Automation & Operations, OPSMVS, REXX and ideally some experience in CA-View & CA … company, and the role can be worked fully remotely. There may be a requirement to be on-call at certain points, but the role is Monday - Friday. Essential Skills: Mainframe Automation OPSMVS REXX Mainframe Operations (ISPF, JCL, z/OS etc.) Desirable Skills: CA-View/CA-Deliver I-Dash Administration Splunk (nice to have) This is a long-term More ❯

Mainframe System Automation Engineer Start: 11/24/2025 End: 05/29/2026 Inside IR35 Nottingham Mainframe System Automation Engineer (OPSMVS) required for an initial 12 - 18-month role with our blue-chip Financial Services client. The right candidate must have demonstrable experience in Mainframe Automation & Operations, OPSMVS, REXX and ideally some experience in CA-View & CA … company, and the role can be worked fully remotely. There may be a requirement to be on-call at certain points, but the role is Monday - Friday. Essential Skills: Mainframe Automation OPSMVS REXX Mainframe Operations (ISPF, JCL, z/OS etc.) Desirable Skills: CA-View/CA-Deliver I-Dash Administration Splunk (nice to have) This is a long-term More ❯

Security Analyst - Mainframe RACF Location: Welwyn Garden City (Shire Park) - Hybrid Working Function: Technology Security and Capability Duration- fixed term contract - 6 months About the role We're seeking a skilled Mainframe Security Analyst to join a Security Operations & Detections team at one of the UK's leading retail organisations. You'll play a key role in protecting their mainframe … environments by supporting security initiatives, maintaining access controls, and responding to security alerts. Working closely with colleagues across Technology and the wider business, you'll help ensure their mainframe platforms remain secure, resilient, and well-controlled. This is a fantastic opportunity to contribute to large-scale enterprise security in a complex, high-impact environment. What you'll be doing Responding … to user requests and incidents in the RACF ticketing system. Reviewing and processing change requests for RACF access. Monitoring daily tasks and controls to maintain operational efficiency. Responding to mainframe security alerts. Administering RACF Role-Based Access Control (RBAC) and Privileged Access Management (PAM) systems. Managing access recertification with data owners. Creating and maintaining internal documentation, including runbooks, processes, and More ❯