501 to 525 of 565 Legacy Systems Jobs in the UK

of penetration testing experience (infrastructure/internal focus) Strong hands-on expertise with Active Directory attacks, lateral movement, and privilege escalation Experience navigating live and legacy production systems Comfortable in Windows and Linux command-line environments Desirable: Python scripting or automation experience Familiarity with OT (Operational Technology) networks Experience with tools like CrackMapExec, BloodHound, PowerView, etc. Certifications More ❯

of penetration testing experience (infrastructure/internal focus) Strong hands-on expertise with Active Directory attacks, lateral movement, and privilege escalation Experience navigating live and legacy production systems Comfortable in Windows and Linux command-line environments Desirable: Python scripting or automation experience Familiarity with OT (Operational Technology) networks Experience with tools like CrackMapExec, BloodHound, PowerView, etc. Certifications More ❯

understand how to bridge the two. Comfortable navigating complex enterprise environments, translating business challenges into human-centered design opportunities for meaningful change while balancing stakeholder priorities, legacy systems, and commercial goals. You are comfortable collaborating with UX and UI practitioners to support product development. Promote the use of human-centered design principles to solve complex experience challenges More ❯

for health monitoring, particularly in biometrics and condition monitoring for rescue operations. Key Responsibilities Provide software engineering solutions for health technology products. Support software management for new and legacy systems. Create engineering documentation (specifications, proposals, test plans, reports). Ensure adherence to engineering standards and processes. Participate in site visits as required. Comply with internal and external standards More ❯

a dynamic and highly acclaimed Insight & Analytics team. The role is expected to leverage extensive experience and advanced expertise in Power BI to lead the reporting transformation from legacy systems. You will also be responsible for building strong relationships with multiple decision-makers in the business and supporting them via actionable insights & reporting. Key stakeholders include the digital More ❯

can work remote with ad hoc travel around the South West London area. Key Responsibilities of the Linux Engineer Maintain, monitor, and troubleshoot legacy Linux (Red Hat) systems to ensure optimal uptime and compliance. Support and administer MySQL and MongoDB databases on Linux platforms. Provide occasional support and integration with Windows systems as needed. Ensure systems … upgrade projects. Contribute to documentation and operational procedures to support system reliability and auditing. Key Skills & Experience required from the Linux Engineer Proven experience as a Linux Engineer or Systems Administrator with a strong focus on Red Hat Enterprise Linux (RHEL) . Solid understanding of MySQL and MongoDB administration in a Linux environment. Basic to intermediate experience with Windows … systems . Strong networking knowledge, including DNS, DHCP, firewalls, and general network troubleshooting. Experience with system compliance, patching, and hardening best practices. Ability to work autonomously, manage priorities, and collaborate effectively across technical and non-technical teams. Outside of IR35 Financial background checks The Linux Engineer can work remote with ad hoc travel around the South West London area. More ❯

can work remote with ad hoc travel around the South West London area. Key Responsibilities of the Linux Engineer Maintain, monitor, and troubleshoot legacy Linux (Red Hat) systems to ensure optimal uptime and compliance. Support and administer MySQL and MongoDB databases on Linux platforms. Provide occasional support and integration with Windows systems as needed. Ensure systems … upgrade projects. Contribute to documentation and operational procedures to support system reliability and auditing. Key Skills & Experience required from the Linux Engineer Proven experience as a Linux Engineer or Systems Administrator with a strong focus on Red Hat Enterprise Linux (RHEL) . Solid understanding of MySQL and MongoDB administration in a Linux environment. Basic to intermediate experience with Windows … systems . Strong networking knowledge, including DNS, DHCP, firewalls, and general network troubleshooting. Experience with system compliance, patching, and hardening best practices. Ability to work autonomously, manage priorities, and collaborate effectively across technical and non-technical teams. Outside of IR35 Financial background checks The Linux Engineer can work remote with ad hoc travel around the South West London area. More ❯

will be Monday to Thursday 8.00am - 4.00pm Friday 8.00am -3.30p, Your responsibilities will include: Accurately input large volumes of data into the FSL system from legacy systems, Bann, paper files, or Excel spreadsheets. Validate and cross-check information for accuracy and completeness. Maintain consistent data formatting and naming conventions across the platform. Identify discrepancies or missing More ❯

a range of micro controllers such as Microchip PIC, ATMega. - Skilled in microprocessor peripheral driver development, preferably for serial communications i.e. UART, I2C, SPI. - A solid understanding of hardware systems, system testing and legacy and current systems. About you: Proven experience managing technical projects, particularly in new product development across engineering disciplines (software, electronic) Ability to lead More ❯

+ benefits depending on experience The Opportunity Fast-paced, growing ecommerce business looking for a hands-on IT Director from an ecommerce background to lead a full tech transformation. Systems are complex, with a mix of legacy and modern tech, minimal structure, and growing commercial demands. This is a high-impact role for someone who can drive … platforms to internal admin tools, infrastructure and cyber security, while directly enabling performance in ecommerce, operations, and marketing. What You’ll Do Lead the overhaul of legacy systems (.NET, Classic ASP) to modern platforms (Laravel). Define and deliver a tech roadmap that improves speed, stability, and scalability. Build and manage a hybrid UK/India tech … analytics capabilities. Tech Stack Backend: Laravel (primary), bespoke PHP, .NET, Classic ASP (legacy) Frontend: JS/CSS stack with custom integrations Hosting: Digital Ocean + Cloudflare Support Systems: Zendesk, Trello (ad hoc), Office 365 Infrastructure: Internal servers accessed via VPN What You Bring Proven leadership in ecommerce or fast-moving tech environments. Strong PHP/Laravel skills More ❯

+ benefits depending on experience The Opportunity Fast-paced, growing ecommerce business looking for a hands-on IT Director from an ecommerce background to lead a full tech transformation. Systems are complex, with a mix of legacy and modern tech, minimal structure, and growing commercial demands. This is a high-impact role for someone who can drive … platforms to internal admin tools, infrastructure and cyber security, while directly enabling performance in ecommerce, operations, and marketing. What You'll Do * Lead the overhaul of legacy systems (.NET, Classic ASP) to modern platforms (Laravel). * Define and deliver a tech roadmap that improves speed, stability, and scalability. * Build and manage a hybrid UK/India tech … analytics capabilities. Tech Stack * Backend: Laravel (primary), bespoke PHP, .NET, Classic ASP (legacy) * Frontend: JS/CSS stack with custom integrations * Hosting: Digital Ocean + Cloudflare * Support Systems: Zendesk, Trello (ad hoc), Office 365 * Infrastructure: Internal servers accessed via VPN What You Bring * Proven leadership in ecommerce or fast-moving tech environments. * Strong PHP/Laravel skills More ❯

In this role, you will lead the technical assurance and delivery of cybersecurity activities across a programme of work involving legacy and modern OT systems, rail-specific technologies, and industrial control components. You will work closely with engineering and operational teams to embed cybersecurity across the lifecycle, ensuring alignment with UK rail regulations, industry standards, and be... More ❯

months Start Date: ASAP Overview Our client is seeking an experienced Inventory Migration Specialist to support a high-impact project focused on migrating legacy fibre network inventory systems to a modern, commercial off-the-shelf platform click apply for full job details More ❯

months Start Date: ASAP Overview Our client is seeking an experienced Inventory Migration Specialist to support a high-impact project focused on migrating legacy fibre network inventory systems to a modern, commercial off-the-shelf platform click apply for full job details More ❯

In this role, you will lead the technical assurance and delivery of cybersecurity activities across a programme of work involving legacy and modern OT systems, rail-specific technologies, and industrial control components. You will work closely with engineering and operational teams to embed cybersecurity across the lifecycle, ensuring alignment with UK rail regulations, industry standards, and be More ❯

Senior Software Developer - AI and Computer Vision Team – Real-Time Video Systems (Sports AI) UK Remote | £Competitive + Equity We’re working with a cutting-edge sports tech company using real-time video and AI to transform live sports. Their platform streams video and data straight from stadiums to fans and partners, live, as it happens. They’re now … hiring a Senior Software Engineer to help rebuild the core infrastructure behind their AI systems, optimising how video is processed, streamed, and fed into machine learning pipelines . What You’ll Be Doing Architecting and optimising real-time systems that handle live video and data Working closely with AI and product teams to build low-latency infrastructure Integrating … and optimising video tooling (FFmpeg, GStreamer, DeepStream, OpenCV) Refactoring legacy systems and shifting from batch to real-time streaming Building resilient Python services that power everything from analytics to live delivery What They’re Looking For 5+ years of professional Python development — your primary language, not just scripting Proven experience working on real-time or high-throughput More ❯

responsibilities include: Leading the commercial relationship with one of the business's most important outsourced IT service providers Managing contract performance, value delivery, and governance across legacy systems and service infrastructure Partnering with senior internal stakeholders in IT, procurement, and operations Supporting the transition to an integrated commercial and SRM (Supplier Relationship Management) model Acting as the … Required Skills: Strong commercial acumen with end-to-end category ownership experience Deep expertise in Tech Services procurement , particularly infrastructure, cloud, SaaS, data, and/or legacy systems Proven ability to manage high-value, complex outsourced service providers Strong supplier relationship and performance management capability Strategic sourcing experience with a pragmatic, delivery-focused mindset Excellent stakeholder engagement More ❯

responsibilities include: Leading the commercial relationship with one of the business’s most important outsourced IT service providers Managing contract performance, value delivery, and governance across legacy systems and service infrastructure Partnering with senior internal stakeholders in IT, procurement, and operations Supporting the transition to an integrated commercial and SRM (Supplier Relationship Management) model Acting as the … Required Skills: Strong commercial acumen with end-to-end category ownership experience Deep expertise in Tech Services procurement , particularly infrastructure, cloud, SaaS, data, and/or legacy systems Proven ability to manage high-value, complex outsourced service providers Strong supplier relationship and performance management capability Strategic sourcing experience with a pragmatic, delivery-focused mindset Excellent stakeholder engagement More ❯

responsibilities include: Leading the commercial relationship with one of the business’s most important outsourced IT service providers Managing contract performance, value delivery, and governance across legacy systems and service infrastructure Partnering with senior internal stakeholders in IT, procurement, and operations Supporting the transition to an integrated commercial and SRM (Supplier Relationship Management) model Acting as the … Required Skills: Strong commercial acumen with end-to-end category ownership experience Deep expertise in Tech Services procurement , particularly infrastructure, cloud, SaaS, data, and/or legacy systems Proven ability to manage high-value, complex outsourced service providers Strong supplier relationship and performance management capability Strategic sourcing experience with a pragmatic, delivery-focused mindset Excellent stakeholder engagement More ❯

months Start Date: ASAP Overview Our client is seeking an experienced Inventory Migration Specialist to support a high-impact project focused on migrating legacy fibre network inventory systems to a modern, commercial off-the-shelf platform. The ideal candidate will possess strong domain knowledge of both active and passive fibre ... JBLK1_UKTJ More ❯

across complex and sensitive client environments. This is a hands-on internal testing role, not web application focused, where you'll be expected to work independently and navigate challenging systems with confidence. This role is suited to testers who thrive in technically demanding scenarios, want autonomy, and are motivated by work with real-world impact. Key Responsibilities Conduct internal … penetration testing Strong knowledge of Active Directory exploitation techniques (privilege escalation, lateral movement, etc.) Confident working in high-stakes, sensitive environments Strong command-line skills across Windows and Linux systems Ability to work through legacy systems, unpatched software, and environments with technical debt Desirable Skills Python scripting or automation experience Understanding of Operational Technology (OT) networks More ❯

across complex and sensitive client environments. This is a hands-on internal testing role, not web application focused, where you'll be expected to work independently and navigate challenging systems with confidence. This role is suited to testers who thrive in technically demanding scenarios, want autonomy, and are motivated by work with real-world impact. Key Responsibilities Conduct internal … penetration testing Strong knowledge of Active Directory exploitation techniques (privilege escalation, lateral movement, etc.) Confident working in high-stakes, sensitive environments Strong command-line skills across Windows and Linux systems Ability to work through legacy systems, unpatched software, and environments with technical debt Desirable Skills Python scripting or automation experience Understanding of Operational Technology (OT) networks More ❯

across complex and sensitive client environments. This is a hands-on internal testing role, not web application focused, where you'll be expected to work independently and navigate challenging systems with confidence. This role is suited to testers who thrive in technically demanding scenarios, want autonomy, and are motivated by work with real-world impact. Key Responsibilities Conduct internal … penetration testing Strong knowledge of Active Directory exploitation techniques (privilege escalation, lateral movement, etc.) Confident working in high-stakes, sensitive environments Strong command-line skills across Windows and Linux systems Ability to work through legacy systems, unpatched software, and environments with technical debt Desirable Skills Python scripting or automation experience Understanding of Operational Technology (OT) networks More ❯

lawyers and their clients. About the role We are seeking Full Stack Engineer(Front End) to join our dynamic team as we modernise our platform, refactor legacy systems, and build new tools that directly impact users across the legal world. This is a full-time, permanent position based in Fleet Street with a hybrid working model, requiring … RESTful and GraphQL APIs to serve application data and develop responsive user interfaces from Figma designs using Next.js, Tailwind, and CSS Modules. Additionally, you will refactor and improve legacy code to enhance speed, security, and scalability. You will work with PostgreSQL, MongoDB, and modern state management tools, collaborating closely with Product, UX, and Data teams to ensure high … testing, documentation, and DevOps practices. The ideal candidate Required Technical Skills: Node.js React/Next.js REST and GraphQL PostgreSQL or similar relational databases Preferred Additional Skills: Experience with legacy codebases Understanding of frontend performance, API design, and secure backend logic Familiarity with modern state management tools What We're Looking For: Extensive experience as Software Engineer/Web More ❯

influence architecture, ship fast, and see your impact daily Work alongside brilliant engineers who value clarity, curiosity, and ambition A clean slate to build from no legacy systems, just smart tools and real users In-person, 5 days a week in Central London with a close-knit, collaborative team Stack: Python, React, Next.js, TypeScript, FastAPI, Postgres We More ❯