1 to 25 of 46 Mainframe Jobs in London

adherence to ITIL processes, change management procedures, and organizational governance standards. Required Qualifications Typically 8-12 years Hands‐on experience in IBM z/Mainframe environments with strong expertise in DB2 Database Administration, database support, performance tuning, security implementation, automation, disaster recovery, and production support. Deep understanding of Db2 database ...

Description: Job Title – IBM Mainframe Architect Location – UK (Remote) Type – Full-Time, Permanent DXC supports one of the largest and most complex technology estates in the London Insurance Market — over 120 interconnected applications spanning distributed, cloud and IBM Mainframe platforms. The Mainframe remains a strategic pillar of this estate, powering … critical business services, core processing, data integration and regulatory workloads. We’re looking for an experienced IBM Mainframe Architect to lead the architectural direction, technology refresh and transformation of this ecosystem as part of a multi-year modernisation programme. What you’ll Do: Lead Legacy Remediation — Identify risks, inefficiencies ...

event-driven architecture, microservices, service-based architecture, and REST APIs Technical experience across environments such as: Java and Linux OpenShift/containerised platforms Mainframe or Tandem environments Good understanding of integration patterns and data technologies Experience working within Agile and DevOps environments, including CI/CD Ability to move comfortably ...

operations. What you'll do: Legacy System Decoding: Analyze and reverse-engineer legacy FIS GMI data structures (typically hosted on AS400/DB2/Mainframe environments), including transaction registers, position files, and margin master files Data Pipeline Engineering: Architect, develop, and tune enterprise-grade ETL pipelines (using tools like Informatica ...

trusted technology adviser and managed services provider, we help clients navigate continuous change and embrace innovation. We deliver world-class hybrid cloud, Infrastructure, mainframe transformation, data, IDAM, and cloud-native solutions, simplifying complex business challenges and creating new pathways to success. Headquartered in the USA and backed by private equity … Expert Service Delivery Manager, you will own the end-to-end service relationship for one or more of Ensono's most strategic, mainframe-centric clients. You'll be the executive face of Ensono to CIO/CTO-level stakeholders, orchestrating delivery across z/OS, distributed and cloud platforms ...

focused on IAM solutions (specifically SailPoint IdentitiyIQ).* Experience developing and configuring most common SailPoint connectors including Active Directory (AD), Azure AD, JDBC, exchange, mainframe, web services, and authoritative source integrations (Workday, Fieldglass)* Familiar with role-based access controls and configuring automated provisioning and deprovisioning.* Familiar with software development lifecycles ...

Make your mark at one of the biggest names in payments. We’re looking for a Senior Systems Programmer to join our ever evolving Mainframe Software Team and help shape the future of global commerce. What you’ll own Design, develop, maintain and support critical enterprise systems and platform services ...

with technology transformation. Desired Technical Background Experience in several of the following areas: Application Modernisation Cloud Migration (Azure, AWS, GCP) Enterprise Architecture Legacy Transformation Mainframe Modernisation API and Integration Architecture Microservices and Cloud-Native Design DevSecOps Application Portfolio Management IT Service Management Technology Strategy Data Migration and Integration Personal Attributes ...

developing, negotiating, and executing business agreements, with a background in Go-To-Market, Business Development, Sales, or Consulting. Experience with Enterprise Application Modernization & Migration (Mainframe, Serverless, Containers, Cloud Operations) and Business Application Technologies (EUC, Supply Chain, CCaaS, Consumer Data Apps, Encrypted/Communication Developer Services). Experience with Data ...

Experience designing API and microservices-based architectures . Strong enterprise integration knowledge. Experience working across complex, highly integrated technology landscapes. Understanding of integration between mainframe and open-system environments would be advantageous but is not essential. Experience modernising legacy banking or payments platforms would be highly desirable. Leadership & Stakeholder Management ...

LocationLondon, United Kingdom# Mainframe Developer – CICS/z/OS at N Consulting LtdLocationLondon, United KingdomSalary£300 - £350/dayJob TypeContractDate PostedApril 30th, 2026Apply Now**Job Description**Infosys is seeking an experienced **Mainframe Developer** with strong expertise in **IBM Mainframe technologies**, including **CICS, z/OS, COBOL … VSAM**, to support enterprise-critical banking and financial applications. The candidate will work on development, enhancement, maintenance, and modernization of legacy mainframe systems while ensuring system stability, scalability, and performance.**Key Responsibilities*** Develop, maintain, and enhance applications on **IBM z/OS** platform* Design and code programs using **COBOL ...

personally, we ensure a bright future for NTT DATA and for the people who work here. NTT DATA is currently looking for a CICS Mainframe Systems Programmer remote for our growing team in the UK and rest of Europe. About the role The CICS Mainframe Systems Programmer is responsible … ensuring the stability, availability, performance, and continuous improvement of CICS services within the IBM Mainframe environment. The role requires strong technical expertise, domain knowledge, and specialist skills to operate, maintain, and enhance critical engineering services as technology evolves. This position involves system programming, infrastructure support, technical analysis, solution design, deployment ...

stakeholder engagement and communication skills. Experience working within large-scale application modernisation programmes. Experience with legacy application transformation/refactoring is desirable. COBOL/mainframe environment experience is desirable. Eligibility Ability to work remotely within the UK. Willingness to attend the London or Manchester office as required. ...

future IT plans Extensive experience selecting and implementing vendor-specific methodologies and prior consulting experience with structured methodologies Extensive experience developing and supporting mainframe applications required Broad experience with multi-platform development tools and toolkits Proficiency in multiple programming languages and frameworks, demonstrating expertise in full-stack development Strong problem ...

future IT plans Extensive experience selecting and implementing vendor-specific methodologies and prior consulting experience with structured methodologies Extensive experience developing and supporting mainframe applications required Broad experience with multi-platform development tools and toolkits Proficiency in multiple programming languages and frameworks, demonstrating expertise in full-stack development Strong problem ...

Quality Engineering & Assurance (QE&A) Practice is seeking a skilled Test Data Management professional to join enterprise-scale data programs. You will work with mainframe Db2, Oracle and SQL, and help embed data provisioning into CI/CD pipelines, ensuring compliant handling of test data under GDPR and DPA. ...

FAPI and Open Banking awareness Understanding of how a bank's mobile app sits on top of core banking, payments and legacy estates, including mainframe-fronted services Essential non-technical skills Executive stakeholder management: can hold a room with CTO-level stakeholders, present findings without softening them or turning them ...

FAPI and Open Banking awareness Understanding of how a bank's mobile app sits on top of core banking, payments and legacy estates, including mainframe-fronted services Essential non-technical skills Executive stakeholder management: can hold a room with CTO-level stakeholders, present findings without softening them or turning them ...

writing, or hosting technical events such as hackathons. Preferred Qualifications Experience working with Enterprise Application Modernization and Migration technologies, including, but not limited to, Mainframe, Serverless, Containers, or Cloud Operations Experience migrating or transforming legacy customer solutions to the cloud Experience in industry work in a related environment Experience contributing ...

Atos UK&I Infrastructure and Hybrid Cloud Practice seeks a Senior Presales Infrastructure Architect to design end-to-end infrastructure solutions across mainframe, storage, data centre and virtualization. You will collaborate with Sales, Portfolio, and Delivery teams to transform legacy environments into modern, efficient, AI-driven architectures. Location is remote ...

Experience in Go-To-Market, Business Development, Sales, or Consulting Experience working with Enterprise Application Modernization and Migration technologies, including, but not limited to, Mainframe, Serverless, Containers, or Cloud Operations Preferred Qualifications Experience selling to Fortune 1000 or Global 2000 organizations MBA Amazon is an equal opportunities employer. We believe ...

Programmer remote for our growing team in the UK and rest of Europe. About the role We are seeking an experienced z/OS Mainframe Systems Programmer to join our enterprise infrastructure team. This role is responsible for the installation, upgrade, maintenance, and support of the IBM z/… support as well as Parallel Sysplex architecture and administration Extensive experience installing, configuring, customizing, supporting and maintaining multiple IBM and CA/Broadcom mainframe products. Experience working in large enterprise environments, preferably within Banking or Financial Services. Strong troubleshooting and problem-solving capabilities. Ability to independently manage complex technical assignments. ...

personally, we ensure a bright future for NTT DATA and for the people who work here. NTT DATA is currently looking for a CICS Mainframe Systems Programmer remote for our growing team in the UK and rest of Europe. About the roleThe CICS Mainframe Systems Programmer is responsible for ensuring … stability, availability, performance, and continuous improvement of CICS services within the IBM Mainframe environment. The role requires strong technical expertise, domain knowledge, and specialist skills to operate, maintain, and enhance critical engineering services as technology evolves. This position involves system programming, infrastructure support, technical analysis, solution design, deployment planning, configuration ...

IZOT product line includes BMC’s Intelligent Z Optimization & Transformation products, which help the world’s largest companies to monitor and manage their mainframe systems. The modernization of mainframe is the beating heart of our product line, and we achieve this goal by developing products that improve the developer experience … mainframe integration, the speed of application development, the quality of the code and the applications’ security, while reducing operational costs and risks. We acquired several companies along the way, and we continue to grow, innovate, and perfect our solutions on an ongoing basis. BMC Software is looking for a Senior ...

Consulting Limited is seeking a Mainframe Developer with experience in IBM Mainframe technologies, including CICS, z/OS, and COBOL, to work on critical banking applications. The role involves development, maintenance, and optimization of legacy systems, with a focus on performance tuning and production support. Candidates should have strong skills ...