1 to 25 of 444 Legacy Systems Jobs in the UK excluding London

QA Manager

Hiring Organisation
Sanderson
Location
Bristol, Avon, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
They are seeking a hands-on QA Manager to take full ownership of the testing strategy for the integration of internal legacy systems into a new, bespoke Pensions Platform. As the QA Manager, you will define, implement, and manage the end-to-end testing strategy across … Responsibilities: Develop and own the full testing strategy for the platform integration programme Lead and execute integration testing across multiple legacy systems Drive data validation activities to ensure accuracy, consistency, and completeness Coordinate testing plans, environments, and schedules across internal and external teams Provide hands-on support ...

Technical Architect

Hiring Organisation
Certes IT Service Solutions
Location
Stratford-Upon-Avon, Warwickshire, West Midlands, United Kingdom
Employment Type
Contract
Contract Rate
From £500 to £700 per day
policing environment to support a major records management system (RMS) migration programme . The role will focus on migrating legacy policing systems into NicheRMS (or a comparable police RMS platform). Role Overview You will play a key role in defining and delivering the technical architecture … standards and information governance requirements. Working closely with business, technical, and supplier teams, you will help enable a smooth transition from legacy systems to NicheRMS. Key Responsibilities Lead the design and ownership of the end-to-end technical architecture for the RMS migration programme. Define target-state ...

Principal Developer

Hiring Organisation
VIQU IT
Location
Newcastle upon Tyne, Tyne & Wear, United Kingdom
Employment Type
Permanent
Salary
£68000 - £72000/annum
week on site requirements) VIQU have partnered with a leading national organisation who are looking to migrate from their legacy systems, to modern, cloud first systems in Azure. They are looking to hire a lead/principal developer focused on C# and .NET development and architecture. … design, moving to Microservices architecture as/when required. Job Duties of the Principal Developer: Lead the design and migration from legacy systems (ASP and PHP) to modern, cloud first systems and applications. Design and implement software solutions using .NET and C#. Help to mentor junior ...

System Integration Engineer

Hiring Organisation
Certes IT Service Solutions
Location
Warwick, Warwickshire, West Midlands, United Kingdom
Employment Type
Contract
Contract Rate
From £400 to £500 per day
environment to support a major records management system (RMS) migration programme . The role will focus on integrating legacy and surrounding policing systems with NicheRMS (or a comparable police RMS platform). Role Overview You will play a key role in the design, build, and delivery … standards. Working closely with technical architects, data migration engineers, suppliers, and policing stakeholders, you will help enable a smooth transition from legacy systems to NicheRMS. Key Responsibilities Design, build, and support system integrations between NicheRMS and legacy or adjacent policing systems. Develop and maintain integration ...

Enterprise Architect (f/m/d)

Hiring Organisation
Awin
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Governance: Develop, maintain, and realize architecture standards and principles that guide technology decisions across the organization. Technology Oversight: Provide strategic oversight of Awin’s systems, platforms, and infrastructure, including legacy systems and cloud-native environments. Integration Leadership: Lead architecture reviews and integration efforts across domains such … experts to ensure architectural consistency and scalability. Strategic Planning: Contribute to long-term planning for platform evolution, including the sunsetting of legacy systems and migration to unified platforms. Mentorship & Enablement: Support solution architects and engineering teams by providing architectural guidance and fostering a culture of technical excellence. ...

Senior Software Engineering Manager

Hiring Organisation
CDW UK
Location
Slough, Berkshire, UK
Employment Type
Full-time
leader/advisor, trainer and "Go To" person for the solution, both technically and strategically. Lead the implementation, customization, and ongoing optimization of enterprise systems, including Workday, Navision, Sub Hub, Informatica, and PeopleSoft, ensuring they align with business needs and industry best practices. Ensure scalability, security, and compliance … stakeholders to assess current processes, identify gaps, and implement solutions that drive efficiency and innovation. Lead migration and upgrade projects for legacy systems, ensuring minimal disruption and maximizing system adoption across teams. Leverage AI/ML and analytics capabilities to enhance reporting, forecasting, and decision-making within ...

Technical Lead / Architect (.NET) - Chesterfield - New (REF50)

Hiring Organisation
RedRock Resourcing
Location
Derby, Derbyshire, UK
Employment Type
Full-time
capable of designing secure, scalable architectures while providing day-to-day technical leadership. You will play a key role in modernising legacy systems, supporting the delivery of new features, and ensuring technical decisions align closely with both user needs and wider business goals. With a strong customer … gather feedback Skills & Experience (Essential) 5+ years' experience designing and delivering solutions using the .NET framework Strong experience architecting scalable, secure, and high-performance systems Hands-on development experience with C# and modern .NET technologies Ability to translate business and user requirements into robust technical designs Experience leading code ...

Technical Lead / Architect (.NET) – Chesterfield – New (REF50)

Hiring Organisation
RedRock Resourcing
Location
Chesterfield, England, United Kingdom
capable of designing secure, scalable architectures while providing day-to-day technical leadership. You will play a key role in modernising legacy systems, supporting the delivery of new features, and ensuring technical decisions align closely with both user needs and wider business goals. With a strong customer … gather feedback Skills & Experience (Essential) 5+ years’ experience designing and delivering solutions using the .NET framework Strong experience architecting scalable, secure, and high-performance systems Hands-on development experience with C# and modern .NET technologies Ability to translate business and user requirements into robust technical designs Experience leading code ...

Data Migration Engineer

Hiring Organisation
Certes IT Service Solutions
Location
Warwick, Warwickshire, West Midlands, United Kingdom
Employment Type
Contract
Contract Rate
From £400 to £500 per day
environment to support a major records management system (RMS) migration programme . The role will focus on migrating data from legacy policing systems into NicheRMS (or a comparable police RMS platform). Role Overview You will play a critical role in the planning, execution, and delivery … Working closely with technical architects, DBAs, system integrators, and policing stakeholders, you will help enable a smooth and controlled transition from legacy systems to NicheRMS. Key Responsibilities Design, develop, and execute data migration strategies for legacy policing systems into NicheRMS. Analyse, map, cleanse, transform ...

Technical Lead / Architect (.NET) – Sheffield – New (REF50)

Hiring Organisation
RedRock Resourcing
Location
Sheffield, England, United Kingdom
.NET framework, capable of designing secure and scalable architectures while providing leadership across multiple development teams. They will drive modernisation of legacy systems, support the delivery of new features and enhancements, and foster strong alignment between technical strategy and user needs. With a strong customer focus … translate business needs into clear technical designs and solutions. Experience conducting code reviews and establishing coding standards. Proven background in modernising legacy systems and building long-term technical strategies. Experience with at least two of the following: ORM frameworks (NHibernate, Entity Framework, etc.) SQL Server or other ...

Senior Full Stack Developer (PL/SQL/ColdFusion)

Hiring Organisation
Method-Resourcing
Location
Newport, Gwent, Wales, United Kingdom
Employment Type
Permanent
Salary
£55,000
will be a versatile and proactive Senior Full Stack Developer to join their team and help bridge the gap between legacy systems and modern application development. This is a hands-on role working on a ColdFusion-based application backed by an Oracle database, with a strong emphasis … willingness to learn quickly Experience of front-end technologies and frameworks Experience with API development and integration (RESTful services) Familiarity with legacy systems and migration projects Ability to coordinate and communicate effectively with offshore teams The following benefits: 10% employer pension contribution 25 Days annual leave, plus ...

Principle Architect - New Architect Practice

Hiring Organisation
Nixor Resource Consulting Ltd
Location
Warrington, Cheshire, UK
Employment Type
Full-time
Lead/Principal Architect, you'll take technical ownership of a critical business domain. You'll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the business unit you are aligned too. The Principle Architect … experienced Senior Architects with: Proven experience in solutions architecture within a heavily regulated industry. A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Experience of managing and running a team of Architects. ...

Principle Architect - New Architect Practice

Hiring Organisation
Nixor Resource Consulting Ltd
Location
Broughton, Scottish Borders, UK
Employment Type
Full-time
Lead/Principal Architect, you'll take technical ownership of a critical business domain. You'll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the business unit you are aligned too. The Principle Architect … experienced Senior Architects with: Proven experience in solutions architecture within a heavily regulated industry. A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Experience of managing and running a team of Architects. ...

Principle Architect - New Architect Practice

Hiring Organisation
Nixor Resource Consulting Ltd
Location
Bolton, Greater Manchester, UK
Employment Type
Full-time
Lead/Principal Architect, you'll take technical ownership of a critical business domain. You'll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the business unit you are aligned too. The Principle Architect … experienced Senior Architects with: Proven experience in solutions architecture within a heavily regulated industry. A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Experience of managing and running a team of Architects. ...

Principle Architect - New Architect Practice

Hiring Organisation
Nixor Resource Consulting Ltd
Location
Edinburgh, Scotland, United Kingdom
Lead/Principal Architect, you'll take technical ownership of a critical business domain. You’ll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the business unit you are aligned too. The Principle Architect … experienced Senior Architects with: Proven experience in solutions architecture within a heavily regulated industry. A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Experience of managing and running a team of Architects. ...

Principle Architect - New Architect Practice

Hiring Organisation
Nixor Resource Consulting Ltd
Location
Manchester, England, United Kingdom
Lead/Principal Architect, you'll take technical ownership of a critical business domain. You’ll guide the transition from legacy systems to a modern, cloud-native, microservices architecture, with a specific focus on solutions that serve the business unit you are aligned too. The Principle Architect … experienced Senior Architects with: Proven experience in solutions architecture within a heavily regulated industry. A strong track record of modernising legacy systems into scalable, microservices-based platforms Deep knowledge of design patterns, cloud-native practices, and architectural governance Experience of managing and running a team of Architects. ...

Lead PHP Developer Tech for Good}

Hiring Organisation
Ernest Gordon Recruitment Limited
Location
Enfield, Middlesex, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
direct impact on millions of lives? You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom … next generation of our products. This role would suit an experienced PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support a Tech ...

PHP Developer MedTech}

Hiring Organisation
Ernest Gordon Recruitment Limited
Location
Enfield, Middlesex, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
sole complex and technical challenges. You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom to shape … next generation of our products. This role would suit an experienced PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support a Tech ...

Data Migration Engineer

Hiring Organisation
Kinetech Recruitment
Location
Milton Keynes, Buckinghamshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
fast-growing, acquisition-led organisation. Your core mission will be to migrate operational (CRM) and in time, finance data from multiple legacy systems into Microsoft Dynamics, repeatedly, reliably, and under pressure. You will work across: Bespoke, undocumented, and at times, home-grown systems SaaS platforms (e.g. … with minimal hand-holding, in a demanding BAU + project environment. What Youll Be Doing For each acquired business, analyse legacy source systems (often undocumented) Understand and interrogate data models at source and target (D365/Dynamics) Perform source-to-target mapping Extract, cleanse, transform, and load ...

Finance Systems Lead

Hiring Organisation
Tandem Talent Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
Join Our Team as a Finance Systems Lead at Foster + Partners Foster + Partners is one of the world’s most innovative and respected studios for sustainable architecture, urbanism, engineering, and design. Founded by Norman Foster in 1967, we’ve grown into a global community of over … expand, we’re implementing a new ERP platform to support the next chapter of our growth — and we’re looking for a skilled Finance Systems Lead to help shape that future. About the role As our Finance Systems Lead , you will own and optimise F+P’s financial systems ...

IT Manager

Hiring Organisation
ALH Recruitment Ltd
Location
Boston, Lincolnshire, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
includes: Oversight of infrastructure, networks, cloud services, and business-critical applications, ensuring secure and reliable operations. Support for both legacy and modern systems, including ERP, CRM, Sage, Microsoft 365, and specialist software. Management and liaison with external providers, contractors, and internal teams to deliver IT solutions, support … user provisioning, group policies, account decommissioning, and organisational structure management. Configure and manage VLANs, switches, routers, firewalls, and wireless networks. Administer and support telephony systems, including Avaya onsite PBX, VoIP services, and phone recording/information requests. Provide support for audio-visual equipment, conferencing systems, and meeting room ...

Lead Software Developer Tech for Good}

Hiring Organisation
Ernest Gordon Recruitment Limited
Location
Enfield, Middlesex, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
autonomy over where you work from? You'll take the lead in defining the technical future, steering the transition from legacy PHP systems to a modern, scalable platform built with Laravel, InertiaJS, and Vue 3. With solid groundwork already in place, you'll have real freedom … next generation of our products. This role would suit an experienced Lead PHP developer who's ready to step beyond maintaining legacy systems and help build something modern, scalable, and genuinely impactful. If you're excited by the idea of using your technical skills to support ...

senior software engineer

Hiring Organisation
V3 Recruitment
Location
Portsmouth, Hampshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
will be asked to shape epics and tickets yourself - always aligned with the CTO's direction Build new features, fix problems in old systems and keep everything running fast and reliable Work on a mix of greenfield projects and legacy systems - both matter and both need … your skills without arrogance Confident resilient pragmatic and results-driven Clear judgement and able to balance speed with quality Experienced in building new systems and fixing legacy Keeps calm under pressure and still delivers Raises the bar for those around them by example Working Style Execute ...

Snowflake Data architect

Hiring Organisation
Mphasis
Location
Manchester Area, United Kingdom
Snowflake/DBT, Kubernetes, S3, Databricks etc. Role and Responsibility :- The Data Mapping Specialist is responsible for analyzing, mapping, and migrating data between legacy and new processing systems. This role ensures the integrity, accuracy, and completeness of data throughout the conversion process, working closely with business stakeholders ...

Data Engineer

Hiring Organisation
NEC Software Solutions
Location
Aberdeen, UK
Employment Type
Full-time
risks, and collaborate closely with technical and business stakeholders. Key Responsibilities Design, develop, and execute ETL processes to migrate data from legacy systems to target platforms. Write and optimise complex SQL queries (preferably MySQL) to support data extraction, transformation, and validation. Apply the full data quality framework … resolve data-related issues promptly. Ensure migrations comply with data governance, security, and regulatory requirements. Work with case management software and related systems to understand data structures and workflows. Qualifications Essential: Proven experience in public sector large-scale data migration projects. Strong SQL development skills within MySQL environments. Solid ...