1 to 25 of 110 Legacy Systems Jobs in the UK excluding London

portfolio of around 300 applications and a similar number of third-party suppliers. This is a highly visible role working across legacy systems, operational teams, risk, suppliers and project stakeholders to ensure upgrades, decommissioning activity and application change are delivered safely and effectively. Key responsibilities Lead … coordinate activity across a large portfolio of third-party applications, including legacy systems, upgrades and decommissioning work. Liaise with third-party suppliers to plan, prioritise and deliver application change, ensuring upgrades are managed effectively and service risks are understood. Work closely with operational teams, risk stakeholders ...

Systems Development Officer Contract Type: Fixed Term Contract Contract Duration (Fixed Term): 12 months Full Time/Part Time: Full Time Hours: 37 Location: Spalding, Boston Salary Range: £31,537 to £37,280 per annum (Subject to JE) Closing Date: 24/08/2026 Are you an experienced … play a key role in a major digital transformation programme The South and East Lincolnshire Councils Partnership is seeking an experienced and motivated Systems Development Officer to join a project team delivering transformational change across Boston Borough Council, South Holland District Council and East Lindsey District Council. This ...

legacy designs and tackle obsolescence projects. Your innovative thinking and problem-solving skills will be at the forefront, ensuring that older systems are revitalised and continue to perform at their best. The ideal candidate will possess a strong background in hardware design engineering. Proficiency in CAD tools … deep understanding of electronic components and systems are crucial. Experience with legacy systems and obsolescence management will set you apart, demonstrating your ability to navigate and update older technologies effectively. Experience & Skills required for the Senior Electronic Design Engineer – High Speed Digital, Reading: Proven experience with ...

play a key role in a major digital transformation programme? The South and East Lincolnshire Councils Partnership is seeking an experienced and motivated Systems Development Officer to join a project team delivering transformational change across Boston Borough Council, South Holland District Council and East Lindsey District Council. This … part of a multidisciplinary project team, you will play a pivotal role in the extraction, transformation, and validation of data from legacy systems, ensuring the successful migration of information into a modern shared platform. You will work closely with service leads, software suppliers and ICT professionals ...

tooling. They are seeking an experienced Engineering Manager to provide technical leadership across a complex technology landscape, balancing the challenges of legacy systems with the adoption of modern cloud-native technologies. This role will suit an engineering leader who is comfortable operating as a technology generalist, engaging … shape engineering strategy, modernisation plans and delivery outcomes. Key Responsibilities Lead engineering activities across a significant pricing transformation initiative. Assess existing legacy systems, applications and codebases to identify opportunities for improvement. Provide technical guidance and recommendations on modernisation strategies and technology investments. Work closely with engineering teams ...

design and delivery of scalable, secure, cloud-first integrations that power real business impact? Excited by the challenge of modernising legacy systems while driving best-practice engineering across Agile teams? As our Integration Lead Developer, youll drive the organisations integration capabilitydesigning and delivering secure, scalable solutions that … connect systems, products and partners. Youll act as the technical authority for APIs, define integration patterns, build reusable components and champion cloud-first (AWS) delivery. Working hands-on in an Agile environment, youll modernise legacy systems, support enterprise architecture evolution and collaborate across teams to enable ...

security, performance, and backend best practices Support high-risk releases, rollouts, and cross-team dependencies across modern and legacy systems Delivery Leadership Lead delivery of complex, multi-team initiatives by managing dependencies, resources, and blockers Define and drive technical strategy, improving engineering practices and delivery processes Build … fast-paced, regulated environments Deep expertise in a relevant engineering discipline, with broad end-to-end technical knowledge Track record of owning production systems from delivery through to operational support Experience leading complex, cross-team initiatives and driving technical outcomes Strong architectural judgement and a pragmatic approach to technical ...

initial discovery phase. Analyse existing datasets and assess data quality. Develop data mapping and migration strategies. Execute data migration from legacy systems to a new cloud platform. Provide recommendations on migration approach, risks, and timelines. Support successful implementation and completion of the migration project. Map the Ocella … systems. Proven ability in data mapping , including matching and transforming data between source and target systems. Experience migrating data from legacy systems to cloud-based platforms . Ability to assess data quality, identify issues, and recommend migration approaches. Desirable Skills Previous experience with iDocs Cloud migrations . ...

Title: Systems Engineer Location: Plymouth - Hybrid 2+ days per week on-site Role Type: Permanent Salary: 50,000 - 60,000 depending on experience Our client, an established engineering consultancy, require an experienced Systems Engineer to join their multi-disciplined team based in Plymouth. Please note we can only … consider sole UK Nationals due to security clearance restrictions The Systems Engineer will work together with the customer contributing to requirements management and problem understanding, supporting facilities engineering and major infrastructure projects. What the role of the Systems Engineer entails: Some of the main duties of the Systems ...

DevOps Engineer to join a growing engineering capability and play a central role in shaping how AI is embedded into real, production-grade software systems . This is not a traditional people-management role . Instead, you'll lead through technical depth, architectural judgement, and delivery experience by setting … capabilities are integrated into modern software platforms. If you enjoy working where architecture, APIs, DevOps, and AI meet , and you care about building systems that are secure, operable, and genuinely useful, this role offers the chance to have real impact. What you'll be doing Your focus will ...

mathematicians and researchers to tackle some of the most challenging quantitative problems in industry. This isn't another role maintaining legacy trading systems or optimising existing codebases. You'll be building the core technology from the ground up, developing sophisticated quantitative models and high-performance software that … silos, endless meetings or layers of bureaucracy. Instead, you'll work closely with experienced software engineers, quantitative researchers and founders to design and build systems that operate at the intersection of mathematics, machine learning and distributed computing. You'll own meaningful projects from day one, influence technical decisions ...

engineering and technology sector. We deliver enterprise technology solutions that help government agencies, defence organisations and commercial entities modernise operations, migrate legacy systems, and transform service delivery. About the Role The OSM Migration Service Lead is a senior technical leadership position responsible for designing, planning, executing … services with business objectives and contractual obligations. Technical Architecture & Design Design target-state operational architectures incorporating modern IT infrastructure, cloud services and integrated systems Evaluate migration approaches (phased, big-bang, hybrid) and recommend optimal strategies based on risk, timeline and cost factors Ensure migrated services meet security requirements including ...

stages of data processing and transformation, implementing monitoring and alerting mechanisms to maintain pipeline reliability.Support data migration and modernization initiatives, transitioning legacy systems to cloud-based data warehouses.Lead communities of practice across Software Engineering to promote awareness and adoption of new technologies. Foster a team culture ...

site Salary: Competitive, depending on experience Job Type: Permanent The Opportunity We are recruiting for an exciting opportunity for a Mid-Level IT Systems Developer to join a small, collaborative IT team within an established organisation. This is a great role for a developer who has moved beyond junior … level and is looking for the opportunity to take ownership of defined development work, contribute to important business systems, and play an active role in improving and modernising existing technology. The environment offers plenty of scope to broaden your technical knowledge, work across a range of systems ...

evolution Build and enhance operator-facing applications, dashboards and visualisation tools displaying real-time system data Own application logic, workflows and behaviour within production systems Contribute to overall software architecture, technical standards and development best practices Implement and maintain version control and CI/CD pipelines using GitHub Ensure … resilient, with a strong emphasis on fault handling and diagnostics Collaborate with controls, robotics and mechanical engineers to ensure seamless integration with physical systems Support testing, commissioning and deployment of software releases Mentor junior developers and contribute to technical decision-making within the team Required Skills & Experience Software Development ...

Developer Location: Cheltenham (Hybrid) Salary: £65k As a Senior Developer, you will play a key role in supporting, maintaining, and evolving our core business systems and integrations. Working within the Business Systems team, you will deliver reliable, scalable solutions that support day-to-day operations, improve user experience … enable business growth. This is a hands-on, varied role combining development, database optimisation, and systems integration. You will collaborate closely with stakeholders across the business, contributing to both new initiatives and continuous improvement of existing platforms. Your responsibilities as a Senior Developer will be: Develop, maintain, and enhance ...

Analyst who knows how to bring structure to complexity. Youll join a busy Logistics & IT function delivering business-critical initiatives across billing platforms, operational systems, and wider technology change. This isnt a note-taker BA role we need someone who can lead from the front, run workshops confidently, challenge … constructively, and translate ambiguity into clear, actionable requirements. If you enjoy untangling complex systems, aligning stakeholders, and making sure projects actually deliver what theyre supposed to youll fit right in. What Youll Be Doing Leading stakeholder workshops across IT and operational teams Capturing, documenting and validating business and system ...

technical design required to migrate New Style Jobseeker's Allowance (JSA) and New Style Employment and Support Allowance (ESA) from legacy systems onto the strategic Multi Benefit Service (MBS) platform. This is an exciting opportunity to shape large-scale digital transformation initiatives, working across complex hybrid environments … solutions. Key Responsibilities Lead the creation of end-to-end technical solution designs for the migration of New Style JSA and ESA from legacy platforms to the Multi Benefit Service. Define architecture across on-premises, cloud and hybrid technology landscapes. Produce high and low-level solution designs covering ...

rolling out new modern tech stacks and applications. You’ll join a busy Logistics & IT function delivering business-critical initiatives across billing platforms, operational systems, and wider technology change. This isn’t a “note-taker BA” role — we need someone who can lead from the front, run workshops confidently … challenge constructively, and translate ambiguity into clear, actionable requirements. If you enjoy untangling complex systems, aligning stakeholders, and making sure projects actually deliver what they’re supposed to — you’ll fit right in. What You’ll Be Doing Leading stakeholder workshops across IT and operational teams Capturing, documenting ...

when you fail, we all learn, then were eager to hear from you. We are looking to expand our Systems Engineering capability in all levels of experience and are keen to hear from you if you feel youre ready to take the next step in your career. You must … Sole UK National and qualify for Security Clearance. Job Description The Systems Engineer will work together with the customer contributing to requirements management and problem understanding, supporting facilities engineering and major infrastructure projects. This role may include but is not limited to: requirements management , ensure projects are properly scoped ...

management, branching strategies, and collaboration. Strong Python scripting for data automation, orchestration, and pipeline optimisation. Working knowledge of C# for maintaining/modifying legacy Windows applications. Experience with Power BI, QuickSight, or similar tools for analytics. Adherence to ETL/data management best practices (e.g., incremental loads, error … GDPR, CCPA) and security protocols (encryption, RBAC). Agile/SCRUM practitioner with experience in offshore team collaboration. Ability to migrate legacy systems to modern cloud architectures. Anticipates issues, recommends pragmatic solutions, and writes clean, reusable code. Articulate with stakeholders, from engineers to non-technical leaders. Manages ...

management, branching strategies, and collaboration. Strong Python scripting for data automation, orchestration, and pipeline optimisation. Working knowledge of C# for maintaining/modifying legacy Windows applications. Experience with Power BI, QuickSight, or similar tools for analytics. Adherence to ETL/data management best practices (e.g., incremental loads, error … GDPR, CCPA) and security protocols (encryption, RBAC). Agile/SCRUM practitioner with experience in offshore team collaboration. Ability to migrate legacy systems to modern cloud architectures. Anticipates issues, recommends pragmatic solutions, and writes clean, reusable code. Articulate with stakeholders, from engineers to non-technical leaders. Manages ...

client as they embark on one of the most significant technology transformation programmes in their history. As part of a move away from legacy Oracle platforms towards a modern SaaS-first ecosystem, we're looking for a Cloud Infrastructure Architect to help define the future cloud strategy … Join? This is a unique opportunity to join us during a pivotal period of change. The organisation is replacing longstanding legacy systems, investing in market-leading SaaS platforms, implementing Snowflake as its strategic data platform, exploring AI use cases through Snowflake Cortex, and preparing for a major ...

Data modelling (Star/Snowflake Schema) NoSQL databases (e.g. Cosmos DB, MongoDB) C# Data governance and GDPR knowledge Agile/Scrum experience Legacy system migration experience Experience working with offshore teams If you are interested in the role, please apply. To follow up please message me on LinkedIn. ...

maintenance of the internal customer portal Develop and enhance C#/.NET applications and RESTful APIs Build and maintain integrations with databases and business systems Develop robust, secure and maintainable solutions Work across both modern and legacy codebases Contribute to the modernisation of the technology estate Develop … using ASP.NET Strong Microsoft SQL Server experience Experience with Microsoft Azure and Linux-hosted applications Comfortable working with both modern and legacy systems Experience with Git/GitHub and agile development Able to work independently and take ownership from requirement through to delivery Strong communication and problem ...