Permanent Legacy Systems Job Vacancies

126 to 150 of 408 Permanent Legacy Systems Jobs

Lead Java Developer

Waterlooville, Hampshire, South East, United Kingdom
Hybrid / WFH Options
ClearCourse
and documentation Running Jira and Agile ceremonies Working with the product manager to plan sprints and prioritize workload for team members Build and maintain robust, secure, and maintainable software systems end to end. Develop loosely coupled, layered software components ensuring they are replaceable, testable, and version-controlled with minimal impact on others. Embrace Clean Code and SOLID principles: your … testing frameworks. Solid understanding of RESTful services and API design. Strong understanding of software design principles (SOLID, DRY or Clean Code). Comfortable navigating and maintaining legacy systems when needed. Experience writing unit and integration tests using JUnit or similar frameworks. Excellent problem-solving skills and attention to detail. Experience in agile environments and working with ticketing … systems (e.g., Jira). Proficiency with Git and modern development workflows (CI/CD). Who are ClearCourse? ClearCourse is a disruptive tech company with one mission to help our customers businesses become even better As a business, were growing (900+ employees in 5 years to be exact), currently providing more than 40 software and payment solutions to More ❯
Employment Type: Permanent, Work From Home
Posted:

Affiliate Lead Solution Architect

London, United Kingdom
AND Digital
closing the digital skills gap. We've been helping organisations build better digital products and stronger digital teams since 2014. We believe our work should always leave a legacy for the client. We do this through close relationships with our offices (or 'Clubs') so that our partners are always prioritised by a regional team close to them. This … challenge and support in defining the architectural direction and solutions for their core system ACBS Banking/lending experience is useful but not mandatory. Experience of transformation of legacy will be useful, Ability as SA … to develop required architecture documents and represent designs at governance sessions, and working on private & public cloud and with security engineers etc will be useful. Modernise Legacy Systems : Lead architecture for modernising ACBS (Core Lending Servicing System) and assess unknown Agricultural Mortgages System. Cloud & Microservices : Drive migration of Pricing Services to Azure cloud using microservices architecture. Architectural More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior AI Developer

London, South East, England, United Kingdom
Arc IT Recruitment
or Brighton Join a leading international eCommerce organization committed to driving innovation through AI. We are looking for a Senior Frontend Developer to lead the modernization of our core systems, utilizing React and JavaScript to enhance performance and efficiency. Your expertise will be key in transforming our technology stack and implementing AI-powered solutions. About the Role: Play a … pivotal role in transforming our technology stack and driving the adoption of AI-powered tools to enhance development workflows. Modernize critical systems and implement intelligent solutions that support business growth and efficiency. Key Responsibilities: Lead the migration of legacy systems to a modern tech stack using React, JavaScript, and cloud platforms. Design and implement AI-driven More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Senior Database Developer

Liverpool, Merseyside, North West, United Kingdom
Hybrid / WFH Options
Forward Role
Senior Database Developer - Liverpool - £70K – Hybrid Fed up with legacy systems that make you want to pull your hair out? Want to work somewhere that actually values your expertise? Tired of boring database work? Ready to actually make a difference with your SQL skills? We're working with a long-standing client to find their next Senior … looking for someone who thrives on technical challenges and strategic thinking: Design and maintain robust database solutions across Azure VM and cloud environments Develop and support MI and DWH systems using Azure Synapse/Sharedo and related technologies Enforce best practices in SQL development and source control methodologies Ensure data security, access control, and maintain audit compliance standards Work … seamlessly across departments to deliver and support critical production systems Skills: Strong SQL Server Management Studio, SSIS, Azure Data Factory, and Visual Studio Solid hands-on experience with Data Warehousing, SSRS, Power BI Proven track record managing secure, high-performance database environments A genuine passion for continuous learning and staying ahead of industry innovation Experience with Azure Synapse/ More ❯
Employment Type: Permanent, Work From Home
Salary: £70,000
Posted:

Software Developer with Security Clearance

Chantilly, Virginia, United States
RogueThink Inc
Position Overview: We are seeking an experienced and motivated Software Engineer with strong proficiency in C# development and a proven ability to design, implement, and maintain enterprise-grade software systems in secure environments. This is a high-impact, hands-on development role supporting federal government clients. You will collaborate with technical leads and stakeholders to architect scalable solutions, modernize … and develop secure, high-performance software components. This role requires strong problem-solving skills, attention to detail, and a commitment to mission-critical delivery. Responsibilities: Design and develop software systems using C# in secure, mission-critical environments. Collaborate with cross-functional teams to define and refine software requirements. Lead or participate in the full software development lifecycle (SDLC), including … design, implementation, testing, deployment, and maintenance. Modernize and enhance legacy systems for performance, security, and scalability. Write and maintain scripts in PowerShell for automation and infrastructure support. Develop and troubleshoot applications on Windows, Android, or embedded platforms. Conduct code reviews, mentor junior developers, and contribute to process improvements. Interface with stakeholders to ensure solutions meet performance and More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

FX Senior Business Analyst

London, United Kingdom
Barclays
Join Barclays as an FX Senior Business Analyst, where you'll be responsible for supporting FX systems as part of a large-scale transformation programme. Your role is not customer-facing but involves a high level of internal stakeholder guidance across global teams. You will work closely with consultants, internal developers, UX designers, testers, and technical supports to deliver … a highly detailed FX technology solution, migrating from legacy systems towards a more agile, modular setup. The ability to assess business processes and elicit requirements from stakeholders, working to convert these into user stories with clear success criteria for the development team. To be successful in this role, you should have: The ability to clearly articulate requirements More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer (Finance & Logistics)

London, United Kingdom
Deepstreamtech
programming languages - you're a polyglot who chooses tools pragmatically , Strong fundamentals in system design, software architecture, and data modelling , Deep experience working in complex domains - such as financial systems, logistics, or workflow-heavy platforms , Hands-on experience with relational databases (PostgreSQL preferred) , Comfortable working in an event-driven, modular monolith environment , Experience with refactoring legacy systems … implementation-focused, with strong scope for architectural input , If you're driven by complex domains, clean abstractions, and high-impact ownership, this is for you , Behind the scenes, our systems model deep commercial logic, financial rules, and real-world operations at scale , We're moving fast, redesigning our architecture for the next chapter, and hiring exceptional engineers to help … us build the future of global trade in drinks , Own the design and implementation of backend systems driving business-critical workflows, financial calculations, and operational tooling , Model domain complexity using DDD and other architectural approaches across an event-driven modular monolith , Shape and evolve our architecture as we transition from Java to Node.js/TypeScript in a modern AWS More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Graduate Software Developer

Manchester, Lancashire, England, United Kingdom
Oscar Technology
An innovative software company is looking for a gifted Software Developer to join their growing development team. As a Software Developer, you'll help develop, maintain, and support key systems and applications, with a focus on our services platform. You'll also play a role in onboarding new customers through system migrations. Working closely with the Managing Director and … wider team, you'll contribute to delivering reliable, customer-focused solutions. Your day-to-day will involve developing and maintaining both desktop and web-based systems using languages like C# .Net, ASP.NET, SQL. You'll work with technologies such as SQL, LINQ, and WPF to build scalable solutions, support data migration from legacy systems, and ensure More ❯
Employment Type: Full-Time
Salary: £25,000 per annum
Posted:

Enterprise Architect

London, South East, England, United Kingdom
Hybrid / WFH Options
Picture More
play a key role in shaping the future of digital solutions in a professional services setting? This Enterprise Architect opportunity will see you influencing strategy, modernising legacy systems, and designing solutions that have real impact, both internally and for clients. Role: Enterprise Architect Location: London (Nearest tube - St Pauls) Hybrid pattern: 3 days per week, 2 days … You’ll also enjoy the freedom to shape architectural strategy and directly influence how technology enables transformation. What you’ll be doing Designing innovative, scalable technology solutions that modernise systems, reduce technical debt and enable new services Setting and aligning architecture with business strategy and long-term vision Driving integration of cloud platforms (Microsoft Azure), data management, and modern More ❯
Employment Type: Full-Time
Salary: £90,000 - £95,000 per annum
Posted:

Enterprise Architect

Ipswich, Suffolk, England, United Kingdom
Hybrid / WFH Options
Picture More
play a key role in shaping the future of digital solutions in a professional services setting? This Enterprise Architect opportunity will see you influencing strategy, modernising legacy systems, and designing solutions that have real impact, both internally and for clients. Role: Enterprise Architect Location: Work from any East Anglia office Hybrid pattern: 3 days per week … You’ll also enjoy the freedom to shape architectural strategy and directly influence how technology enables transformation. What you’ll be doing Designing innovative, scalable technology solutions that modernise systems, reduce technical debt and enable new services Setting and aligning architecture with business strategy and long-term vision Driving integration of cloud platforms (Microsoft Azure), data management, and modern More ❯
Employment Type: Full-Time
Salary: £90,000 - £95,000 per annum
Posted:

Senior Oracle Consultant

London Area, United Kingdom
HCLTech
testing strategies to ensure parity and quality. Assist in managing a hybrid Oracle/.NET environment during phased rollout. Contribute to BAU operations and the stability of the legacy system while migration activities are underway. Required Skills & Experience 5+ years of experience developing in Oracle PL/SQL, including deep knowledge of stored procedures, triggers, and packages. Proven … to work collaboratively in a cross-functional team environment. Strong problem-solving ability and attention to technical detail. Excellent communication skills, with the ability to document and explain complex systems clearly. Desirable Skills Experience working with legacy PHP systems and their integration with Oracle. Exposure to AI-assisted development tools for code analysis and migration. Familiarity More ❯
Posted:

Senior Oracle Consultant

City of London, London, United Kingdom
HCLTech
testing strategies to ensure parity and quality. Assist in managing a hybrid Oracle/.NET environment during phased rollout. Contribute to BAU operations and the stability of the legacy system while migration activities are underway. Required Skills & Experience 5+ years of experience developing in Oracle PL/SQL, including deep knowledge of stored procedures, triggers, and packages. Proven … to work collaboratively in a cross-functional team environment. Strong problem-solving ability and attention to technical detail. Excellent communication skills, with the ability to document and explain complex systems clearly. Desirable Skills Experience working with legacy PHP systems and their integration with Oracle. Exposure to AI-assisted development tools for code analysis and migration. Familiarity More ❯
Posted:

Software Engineer 1 with Security Clearance

Maryland, United States
Caribou Thunder, LLC
and secure coding practices • Familiarity with system analysis workflows, user interaction models, and high-availability environments Bonus: Passion for engineering excellence and the ability to adapt legacy systems into modern, scalable, mission-focused solutions If this sounds like you, we'd love to talk. Apply today and build something that matters. Who is Caribou Thunder? Building Tomorrow … Grounded in Legacy Caribou Thunder is a Woman, Native American, Minority Owned, WOSB, SDB, SBA, and HUBZone … Certified small business. For decades, we've been at the forefront of delivering engineering excellence to national security programs. Trusted by the DoD, we develop and support mission-critical systems that protect our nation. At Caribou Thunder, we fuse tradition and innovation - with a deep sense of purpose rooted in integrity and service. Why Caribou Thunder? Empowering You and More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Director, IT Core

Dublin, Ireland
Forcepoint
the global IT infrastructure strategy in support of company growth, performance, security, and digital transformation. Modernize and upgrade legacy infrastructure, addressing historical technical debt and replacing fragmented systems with cloud-first, resilient, and scalable platforms. Architect and execute a pragmatic roadmap for cloud migration (AWS), infrastructure automation, and service decoupling. Drive consolidation and strategic decommissioning of legacy data centers and systems to improve efficiency, reduce cost, and strengthen operational control. Ensure infrastructure is compliant with global standards and frameworks (ISO, SOC2, NIS2), and is built with security, availability, and auditability in mind. Oversee all aspects of enterprise networking-LAN, WAN, Internet connectivity, VPNs, and SD-WAN-ensuring performance, reliability, and redundancy. Lead global telecom … strategy, managing relationships with ISPs, network providers, and UCaaS vendors. Own the architecture, deployment, and support of the company's enterprise telephony systems, including unified communications Drive the transition from legacy VoIP systems to fully integrated UCaaS environments, ensuring high availability, call quality, and seamless collaboration experiences. Support the build-out, relocation, and closure of office More ❯
Employment Type: Permanent
Salary: EUR 150,000 - 200,000 Annual
Posted:

SAP Data Lead

London, South East, England, United Kingdom
Harrington Boyd
successful project delivery. Responsibilities: Lead and oversee data migration strategies and approaches as the SAP Data Architect, including governance processes and reconciliation, ensuring smooth transitions from legacy systems to SAP S/4HANA. Architect comprehensive end-to-end data solutions that leverage SAP technologies, custom applications, and partner solutions, driving business transformation within the value chain tower. … or SAP Data Architect, with at least two full project lifecycles completed in an SAP environment. Strong expertise in data migration, including governance, reconciliation, and ETL processes from legacy systems. Proficiency in SAP S/4HANA and a deep understanding of SAP technologies, custom applications, and partner solutions within the value chain tower. A solid grasp of data More ❯
Employment Type: Full-Time
Salary: £85,000 - £105,000 per annum
Posted:

SAP Data Lead

London, United Kingdom
Harrington Boyd
successful project delivery. Responsibilities: Lead and oversee data migration strategies and approaches as the SAP Data Architect, including governance processes and reconciliation, ensuring smooth transitions from legacy systems to SAP S/4HANA. Architect comprehensive end-to-end data solutions that leverage SAP technologies, custom applications, and partner solutions, driving business transformation within the value chain tower. … or SAP Data Architect, with at least two full project lifecycles completed in an SAP environment. Strong expertise in data migration, including governance, reconciliation, and ETL processes from legacy systems. Proficiency in SAP S/4HANA and a deep understanding of SAP technologies, custom applications, and partner solutions within the value chain tower. A solid grasp of data More ❯
Employment Type: Permanent
Salary: £85000 - £105000/annum Bonus+benefits
Posted:

Software Developer

Manchester, Lancashire, England, United Kingdom
Oscar Technology
An innovative software company is looking for a gifted Software Developer to join their growing development team. As a Software Developer, you'll help develop, maintain, and support key systems and applications, with a focus on our services platform. You'll also play a role in onboarding new customers through system migrations. Working closely with the Managing Director and … wider team, you'll contribute to delivering reliable, customer-focused solutions. Your day-to-day will involve developing and maintaining both desktop and web-based systems using languages like C#, ASP, SQL, WPF, and WCF. You'll work with technologies such as SQL, LINQ, and WPF to build scalable solutions, support data migration from legacy systems More ❯
Employment Type: Full-Time
Salary: £50,000 - £60,000 per annum
Posted:

Software Developer

Manchester, North West, United Kingdom
Oscar Associates (UK) Limited
An innovative software company is looking for a gifted Software Developer to join their growing development team. As a Software Developer, you'll help develop, maintain, and support key systems and applications, with a focus on our services platform. You'll also play a role in onboarding new customers through system migrations. Working closely with the Managing Director and … wider team, you'll contribute to delivering reliable, customer-focused solutions. Your day-to-day will involve developing and maintaining both desktop and web-based systems using languages like C#, ASP, SQL, WPF, and WCF. You'll work with technologies such as SQL, LINQ, and WPF to build scalable solutions, support data migration from legacy systems More ❯
Employment Type: Permanent
Salary: £60,000
Posted:

Junior Software Developer

Manchester, Lancashire, England, United Kingdom
Oscar Technology
An innovative software company is looking for a gifted Software Developer to join their growing development team. As a Software Developer, you'll help develop, maintain, and support key systems and applications, with a focus on our services platform. You'll also play a role in onboarding new customers through system migrations. Working closely with the Managing Director and … wider team, you'll contribute to delivering reliable, customer-focused solutions. Your day-to-day will involve developing and maintaining both desktop and web-based systems using languages like C#, ASP, SQL, WPF, and WCF. You'll work with technologies such as SQL, LINQ, and WPF to build scalable solutions, support data migration from legacy systems More ❯
Employment Type: Full-Time
Salary: £35,000 - £45,000 per annum
Posted:

BC Developer - £60k - Tamworth

Tamworth, Staffordshire, United Kingdom
Pearson Carter
the first BC hire in the business Excellent communication and problem-solving skills Desirable : Knowledge of Business Central's finance modules Experience integrating BC with bespoke legacy systems If you're ready to take the lead on a pivotal ERP implementation and become the Business Central expert in a company undergoing digital change, we'd love to More ❯
Employment Type: Permanent
Salary: GBP 60,000 Annual
Posted:

D365 BC Developer Up to £60,000 Onsite - West Midlands

Tamworth, Staffordshire, United Kingdom
Pearson Carter
the first BC hire in the business Excellent communication and problem-solving skills Desirable : Knowledge of Business Central's finance modules Experience integrating BC with bespoke legacy systems If you're ready to take the lead on a pivotal ERP implementation and become the Business Central expert in a company undergoing digital change, we'd love to More ❯
Employment Type: Permanent
Salary: GBP 60,000 Annual
Posted:

Senior Data Engineer

London, South East, England, United Kingdom
Hybrid / WFH Options
Searchability
our tech team, you will take ownership of building Fornax - our AI-powered data migration platform. This system is designed to seamlessly transfer data from outdated legacy systems into our own platform, enabling rapid onboarding of new clients and driving our continued growth. ESSENTIAL SKILLS Strong SQL querying skills Proven experience in data migrations and data pipeline More ❯
Employment Type: Full-Time
Salary: £70,000 - £110,000 per annum
Posted:

Product Owner (12M FTC)

Surrey, England, United Kingdom
La Fosse
end implementation of Hubspot. You will be defining and maintaining the roadmap alongside a cross-functional team. Responsibilities: Define the roadmap and lead the migration of legacy systems to Sitecore and HubSpot Integrate martech with CRM/ERP, analytics and identity platforms Embed A/B testing and partner with BI to gather insights to inform content More ❯
Posted:

Data Migration Specialist (Netsuite)

London Area, United Kingdom
Camino Search
company is embarking on a greenfield NetSuite implementation to unify operations and drive scalability. Key Responsibilities Lead the end-to-end data migration process from multiple legacy systems into NetSuite. Develop and execute a robust data cleansing strategy to ensure accuracy, consistency, and completeness across all acquired entities. Define data mapping, transformation, and validation rules in collaboration More ❯
Posted:

Data Migration Specialist (Netsuite)

City of London, London, United Kingdom
Camino Search
company is embarking on a greenfield NetSuite implementation to unify operations and drive scalability. Key Responsibilities Lead the end-to-end data migration process from multiple legacy systems into NetSuite. Develop and execute a robust data cleansing strategy to ensure accuracy, consistency, and completeness across all acquired entities. Define data mapping, transformation, and validation rules in collaboration More ❯
Posted:
Legacy Systems
10th Percentile
£45,000
25th Percentile
£52,500
Median
£65,000
75th Percentile
£78,750
90th Percentile
£95,000