24 of 24 Legacy Systems Jobs in Berkshire

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 ...

Data Engineer

Hiring Organisation
NEC Software Solutions
Location
Slough, Berkshire, 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 ...

Data Engineer

Hiring Organisation
NEC Software Solutions
Location
Reading, Berkshire, 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 ...

Lead C# Engineer - Core Trading Systems - Global Multi-Asset Investment Firm - London - Up to £400k TC

Hiring Organisation
Mondrian Alpha
Location
Slough, Berkshire, UK
Employment Type
Full-time
Lead C# Engineer – Core Trading Systems - Global Multi-Asset Investment Firm - London - Up to £400k TC Our client is a globally recognized, multi-asset investment firm managing over $25 billion in assets on behalf of a major philanthropic foundation and select institutional partners. Operating as both a family office … culture that values intellectual rigor, collaboration, and innovation. The firm emphasizes ownership, development, and accountability, empowering individuals to think creatively, challenge assumptions, and build systems that drive real performance impact. The Opportunity We are seeking a Software Engineer to join the firm's Core Development team, which builds ...

Enterprise Architect

Hiring Organisation
CitNOW Group
Location
Slough, Berkshire, UK
Employment Type
Full-time
platforms, applications and data landscapes. We are seeking an experienced Enterprise Architect to define and implement a group-wide architecture strategy that unifies these systems within a cohesive, scalable and future-ready environment, enabling us to accelerate innovation in a secure and scalable manner. We're seeking strong expertise … Develop and maintain a unified enterprise architecture framework that spans all acquired businesses Define standards and blueprints for integration, data architecture, and core enterprise systems Integration & Consolidation Lead the design of integration strategies to connect disparate platforms, applications, and processes across the group and with external third-parties Oversee ...

Lead AI Engineer

Hiring Organisation
Euphoric
Location
Slough, Berkshire, UK
Employment Type
Full-time
trillion on benefits every year. It's their second-largest cost after payroll — yet the entire category is still running on legacy systems and outdated assumptions. The space is primed for transformation: despite its scale, it's been almost completely overlooked by AI-first startups. Incumbents — including … resident expert. You won't just be tuning hyperparameters in a notebook; you will be a core software engineer architecting the complex systems that make AI useful in production. In the immediate future, your time will be split between crafting complex AI processing architectures (40%) and hands-on data ...

Oracle APEX Consultant

Hiring Organisation
Frontier Resourcing
Location
Slough, Berkshire, UK
Employment Type
Full-time
integration layers (OIC) to curate clean, well-modelled datasets. Contribute to data migration activities, ensuring accuracy, integrity and auditability throughout transitions from legacy systems. Apply security-by-design, access controls and logging appropriate for regulated MOD environments. Operate in Agile delivery squads with APEX devs, data engineers, integration ...

Senior Platform Engineer - Hedge Fund

Hiring Organisation
Orbis Group
Location
Slough, Berkshire, UK
Employment Type
Full-time
data centres and cloud environments. Key focus areas include: Leading the migration from Nomad to Kubernetes across a hybrid infrastructure environment Designing highly available systems that support real-time trading operations Expanding the firm's cloud footprint (AWS/Azure/GCP) while maintaining on-prem capabilities Owning projects … from design through production What you'll need: Production experience with Kubernetes (EKS/AKS/GKE or bare-metal) Strong Linux systems background; Windows experience is beneficial Track record delivering cloud migrations and managing hybrid environments Experience supporting mission-critical, highly available systems What makes this different ...

Senior Python Developer - Multi-Billion Dollar Hedge Fund - Mortgage Technology - London - Hybrid - Up to £300k TC

Hiring Organisation
Mondrian Alpha
Location
Slough, Berkshire, UK
Employment Type
Full-time
daily by investment, risk, finance, and operations. You will play a pivotal role as the firm continues its migration away from legacy systems and enhances its bespoke internal platforms. The Role As a Business Engineering Developer, you will: Build, enhance, and maintain applications supporting mortgage origination, valuation … problem-solving Significant influence across the organisation You will join at a time of major investment in technology, with clear opportunities to contribute to systems that will define the firm's next decade. What We're Looking For Strong Python skills (pandas, NumPy, SQLAlchemy, etc.) Experience working in business ...

Cutover Manager

Hiring Organisation
ECMS
Location
Slough, Berkshire, UK
Employment Type
Full-time
system cutover and business readiness for a major transformation program. This role is critical to ensuring a smooth transition from legacy systems to new platforms with minimal disruption to business operations. Key Responsibilities Develop and own the cutover strategy, plan and timeline for the program. Coordinate cross … ensure stabilization activities are executed effectively. Skills & Experience Proven experience in cutover planning and execution within large-scale transformation programs. Strong understanding of Business Systems/Cloud Migrations, data migration and system integrations. Excellent stakeholder management and communication skills. Ability to work under pressure and manage multiple priorities ...

Head of Architecture - Infrastructure

Hiring Organisation
Centrica - CHP
Location
Windsor, Berkshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
guiding the architectural vision across our Infrastructure business. This role sits at the heart of a product-led technology organisation, ensuring that our systems and platforms not only support current business needs but are also built to scale and evolve with future demands. You'll be the strategic mind … behind long-term technology roadmaps, aligning them with enterprise architecture and the wider technology strategy. Whether it's rationalising legacy systems or guiding future investments, your focus will be on creating a technology landscape that's efficient, secure, and ready for growth. Location: UK-based hybrid role ...

Senior Software Engineer (PHP)

Hiring Organisation
True9
Location
Slough, Berkshire, UK
Employment Type
Full-time
talented team on our mission to help people and businesses thrive through technology. If you love untangling hard problems, improving legacy systems, and shipping clean, tested code, you'll fit right in. Your role as a Senior PHP Software Engineer at True9: Lead the back-end - write ...

Senior Software Engineer (PHP)

Hiring Organisation
True9
Location
Reading, Berkshire, UK
Employment Type
Full-time
talented team on our mission to help people and businesses thrive through technology. If you love untangling hard problems, improving legacy systems, and shipping clean, tested code, you'll fit right in. Your role as a Senior PHP Software Engineer at True9: Lead the back-end - write ...

Full-Stack Node.js/React Developer

Hiring Organisation
X4 Technology
Location
Slough, Berkshire, UK
Employment Type
Full-time
state management Solid understanding of frontend design: usability, accessibility, polished UI Proven experience or understanding of OIDC/OAuth flows in multi-tenant systems Security mindset (handling sensitive data, regulatory constraints) Excellent communication - able to present technical decisions to product/business stakeholders Desirable/Bonus Experience in financial … services, payments, banking or regulated environments Exposure to Next.js, Vue.js, or other JS frameworks Prior work migrating legacy systems or transforming architecture Familiarity with containerisation, microservices, AWS deployments Please apply now if this role is of interest. ...

Professional Services Consultant

Hiring Organisation
LexisNexis Risk Solutions
Location
Slough, Berkshire, UK
Employment Type
Full-time
services for LexisNexis Risk Solutions' Bridger product suite. This role partners with clients to ensure successful onboarding, configuration, and transition from legacy systems to Bridger, aligning solutions with compliance objectives and operational workflows. The consultant acts as a trusted advisor, guiding clients through functional design, best practices … processes. Conduct workshops to capture business requirements and convert them into solution configurations. Migration Support - Assist clients in planning and executing migrations from legacy platforms (e.g., WorldCompliance) to Bridger and provide guidance on data mapping, cleansing, and validation to ensure smooth transition. Client Advisory & Best Practices - Advise clients ...

Full Stack Software Engineer

Hiring Organisation
Firenze
Location
Slough, Berkshire, UK
Employment Type
Full-time
technical depth, gain exposure to DevOps, cloud, and observability practices, and help define how we build software at Firenze. With no legacy systems, you'll be shaping our platform from the ground up and growing alongside a team that values mentorship, learning, and engineering excellence. Key Responsibilities … pipelines) and learn how to scale reliable delivery. Performance & Observability: Gain hands-on experience with monitoring tools and learn how to build observable systems from day one. Documentation & Developer Experience: Help create clear technical docs and reusable tooling that makes development smoother for everyone. Cross-Functional Collaboration: Partner with ...

Solutions Architect

Hiring Organisation
Next Ventures
Location
Slough, Berkshire, UK
Employment Type
Full-time
designs are aligned, methodologies applied, and project milestones met. Report to the program lead, supporting a 100-member team in replacing legacy systems, including payroll for 100,000 employees. Skills: Strong expertise in Finance modules and experience across Logistics, Procurement, HR, and Payroll. Proven ability to align ...

Infrastructure & Networks Manager

Hiring Organisation
B&S Group
Location
Slough, Berkshire, UK
Employment Type
Full-time
under pressure. • Clear communicator able to translate technical issues for non‐technical stakeholders. • Organised, documentation‐driven and improvement‐focused. • Comfortable challenging legacy systems and driving modernisation. ...

Genetec Security Engineer

Hiring Organisation
QCIC
Location
Slough, Berkshire, UK
Employment Type
Full-time
control and CCTV projects across the client's portfolio. This position will involve supporting enterprise-level application implementations, managing migrations from legacy systems, and providing expert troubleshooting. The ideal candidate must excel in multitasking and thrive in a fast-paced, dynamic environment. This is an on-site … Oversee and execute the system configuration of the C-Cure and Victor servers for adding new or modifying existing installations Process the administration of systems, providing a robust triage service through a 24/7 Command Centre for all reported technical issues and manage any subsequent requirement and fault ...

Research Director

Hiring Organisation
Good Maven
Location
Slough, Berkshire, UK
Employment Type
Full-time
marketing decisions. Partner with Product, Design, Data, Engineering, and Marketing to embed the customer voice into strategy and execution. Overhaul and elevate a legacy team through hiring, mentorship, and organisational change. Establish scalable frameworks, processes, and tools to maximise research effectiveness and influence. Act as a trusted advisor … functions. Experience partnering closely with Product, Marketing, and Design teams to deliver customer-centric outcomes. Resilient and resourceful: able to navigate legacy systems and inspire transformation. Demonstrated success managing managers and/or senior ICs within high-performing teams. Skilled in storytelling, data synthesis, and presenting clear ...

D365 CRM Technical Consultant

Hiring Organisation
Next Ventures
Location
Slough, Berkshire, UK
Employment Type
Full-time
resource, operating between a Senior Developer and a Technical Architect. Lead the technical re-engineering and business transformation efforts, migrating wholesale legacy systems to Dynamics 365 CRM. Focus on CRM-centric development and architecture to support the 'inside out' transformation. Design and implement solutions to expand ...

Oracle Developer

Hiring Organisation
4Square Recruitment Ltd
Location
Slough, Berkshire, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £70,000 per annum
performance, scalable database solutions. This is a hands-on role for someone who genuinely enjoys writing proper PL/SQL—not just babysitting legacy code. What You’ll Need 10+ years’ commercial experience working with Oracle PL/SQL Strong, clean, and efficient Oracle SQL & PL/… similar fast-paced environment Nice to Have (but not deal-breakers) Performance tuning and query optimisation Experience supporting or refactoring legacy Oracle systems Exposure to modern development practices and version control ...

Contract Software Engineer

Hiring Organisation
Morson Edge
Location
Reading, Berkshire, UK
Employment Type
Full-time
/d - Outside IR35 - Fully Remote Great opportunity for an experience Contractor to join an eCommerce client as they migrate a legacy C# product to modern Typescript. The ideal candidate will have worked with all listed technologies below and have past experience of migrating legacy systems. … Skills: Typescript, Node (Nest.js) React/Next.js C#/.Net (legacy) Postgres AWS The contract will be an initial 6 months with a very high likelihood of extension and is outside IR35. If you're interested in the opportunity please apply via the link ...

Contract Software Engineer

Hiring Organisation
Morson Edge
Location
Slough, Berkshire, UK
Employment Type
Full-time
/d - Outside IR35 - Fully Remote Great opportunity for an experience Contractor to join an eCommerce client as they migrate a legacy C# product to modern Typescript. The ideal candidate will have worked with all listed technologies below and have past experience of migrating legacy systems. … Skills: Typescript, Node (Nest.js) React/Next.js C#/.Net (legacy) Postgres AWS The contract will be an initial 6 months with a very high likelihood of extension and is outside IR35. If you're interested in the opportunity please apply via the link ...