Legacy Code Jobs in London

1 to 25 of 49 Legacy Code Jobs in London

Senior Software Engineer

City of London, London, United Kingdom
Burns Sheehan
to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯
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Senior Software Engineer

London Area, United Kingdom
Burns Sheehan
to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯
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Lead Software Engineer

London Area, United Kingdom
Burns Sheehan
to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯
Posted:

Lead Software Engineer

City of London, London, United Kingdom
Burns Sheehan
to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯
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Lead Software Engineer

london, south east england, united kingdom
Burns Sheehan
to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯
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Lead Software Engineer

london (city of london), south east england, united kingdom
Burns Sheehan
to attract the best talent on the market. Having received huge investment, they are on a journey to truly disrupt the industry and are not held back by any legacy code or old customers. This means that they're able to build out state-of-the-art, Greenfield code which can focus on being the worlds most More ❯
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Software Engineer

Hounslow, England, United Kingdom
Scalian
a focus on long-term stability and performance. Collaborate with cross-functional teams, including PO, PDEF, QA, DevOps, and product stakeholders, to define, design, and deliver new features. Refactor legacy code and participate in technical debt reduction. Write clean, scalable, and maintainable code with proper documentation. Participate in code reviews and mentor junior developers where applicable. More ❯
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Software Engineer

london, south east england, united kingdom
Scalian
a focus on long-term stability and performance. Collaborate with cross-functional teams, including PO, PDEF, QA, DevOps, and product stakeholders, to define, design, and deliver new features. Refactor legacy code and participate in technical debt reduction. Write clean, scalable, and maintainable code with proper documentation. Participate in code reviews and mentor junior developers where applicable. More ❯
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Software Engineer

london (hounslow), south east england, united kingdom
Scalian
a focus on long-term stability and performance. Collaborate with cross-functional teams, including PO, PDEF, QA, DevOps, and product stakeholders, to define, design, and deliver new features. Refactor legacy code and participate in technical debt reduction. Write clean, scalable, and maintainable code with proper documentation. Participate in code reviews and mentor junior developers where applicable. More ❯
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Senior Software Engineer

City of London, London, United Kingdom
Hybrid / WFH Options
fanvue
React-Admin-based interface. Optimize application performance and user experience across different teams using Fadmin. Work with authentication/authorization mechanisms (e.g., role-based access). Write clean, maintainable code and contribute to internal documentation. Support ongoing improvements to developer experience and internal tooling. 👀Who You Are: Must-haves: Proficiency in React and modern JavaScript/TypeScript. Experience with … React-Admin and Material UI (MUI). Solid understanding of Prisma and relational databases like PostgreSQL. Familiarity with internal tool development and business-focused UIs. Comfort refactoring legacy code and migrating existing queries into structured code. Strong communication skills and a collaborative mindset. Nice-to-haves: Experience with Retool or other low-code internal tooling platforms. Familiarity More ❯
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Senior Software Engineer

London Area, United Kingdom
Hybrid / WFH Options
fanvue
React-Admin-based interface. Optimize application performance and user experience across different teams using Fadmin. Work with authentication/authorization mechanisms (e.g., role-based access). Write clean, maintainable code and contribute to internal documentation. Support ongoing improvements to developer experience and internal tooling. 👀Who You Are: Must-haves: Proficiency in React and modern JavaScript/TypeScript. Experience with … React-Admin and Material UI (MUI). Solid understanding of Prisma and relational databases like PostgreSQL. Familiarity with internal tool development and business-focused UIs. Comfort refactoring legacy code and migrating existing queries into structured code. Strong communication skills and a collaborative mindset. Nice-to-haves: Experience with Retool or other low-code internal tooling platforms. Familiarity More ❯
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Senior Software Engineer

City of London, London, United Kingdom
bloom
minded and love solving messy, complex problems You thrive in small teams where ideas move from whiteboard → production in hours You want to build something meaningful, not just maintain legacy code, with a love for building 0-1 products. 📍 London (4 days a week building together onsite) 💰 Up to £130,000 + meaningful early-stage equity % If you More ❯
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Senior Software Engineer

London Area, United Kingdom
bloom
minded and love solving messy, complex problems You thrive in small teams where ideas move from whiteboard → production in hours You want to build something meaningful, not just maintain legacy code, with a love for building 0-1 products. 📍 London (4 days a week building together onsite) 💰 Up to £130,000 + meaningful early-stage equity % If you More ❯
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Senior Software Engineer

london, south east england, united kingdom
bloom
minded and love solving messy, complex problems You thrive in small teams where ideas move from whiteboard → production in hours You want to build something meaningful, not just maintain legacy code, with a love for building 0-1 products. 📍 London (4 days a week building together onsite) 💰 Up to £130,000 + meaningful early-stage equity % If you More ❯
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Senior Software Engineer

london (city of london), south east england, united kingdom
bloom
minded and love solving messy, complex problems You thrive in small teams where ideas move from whiteboard → production in hours You want to build something meaningful, not just maintain legacy code, with a love for building 0-1 products. 📍 London (4 days a week building together onsite) 💰 Up to £130,000 + meaningful early-stage equity % If you More ❯
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Senior Engineer - Funding Circle

London, UK
Hybrid / WFH Options
Funding Circle
as fast, hassle free processes to deliver an unbeatable customer experience. The role You love to build new things but also don't shy away from digging into a legacy codebase. You love to work in a complex problem domain that is implemented with simple software systems. You have an interest or experience in Functional Programming, microservices and/ More ❯
Employment Type: Full-time
Posted:

Software Engineer

City of London, London, United Kingdom
LinuxRecruit
is discovered, protected, and accelerated. The team is building systems that detect infringement, streamline R&D, and empower creators to move faster. It’s a true greenfield opportunity, no legacy code, no bureaucracy, just the freedom to solve challenging technical problems with impact. The founding team comes from some of the world’s most respected technology companies and More ❯
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Software Engineer

London Area, United Kingdom
LinuxRecruit
is discovered, protected, and accelerated. The team is building systems that detect infringement, streamline R&D, and empower creators to move faster. It’s a true greenfield opportunity, no legacy code, no bureaucracy, just the freedom to solve challenging technical problems with impact. The founding team comes from some of the world’s most respected technology companies and More ❯
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🚀 C++ Engineer – World’s Largest (Almost!) Supercomputer

City of London, London, United Kingdom
Augmentti
by colleagues who are at the top of their fields, pushing the boundaries of technology and finance every day. Innovation & Impact: Work in a modern, young codebase with minimal legacy code and technical debt. You’ll have the freedom to choose the best technology for the job, allowing you to innovate and deliver at an unmatched scale. They More ❯
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🚀 C++ Engineer – World’s Largest (Almost!) Supercomputer

London Area, United Kingdom
Augmentti
by colleagues who are at the top of their fields, pushing the boundaries of technology and finance every day. Innovation & Impact: Work in a modern, young codebase with minimal legacy code and technical debt. You’ll have the freedom to choose the best technology for the job, allowing you to innovate and deliver at an unmatched scale. They More ❯
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🚀 C++ Engineer – World’s Largest (Almost!) Supercomputer

london, south east england, united kingdom
Augmentti
by colleagues who are at the top of their fields, pushing the boundaries of technology and finance every day. Innovation & Impact: Work in a modern, young codebase with minimal legacy code and technical debt. You’ll have the freedom to choose the best technology for the job, allowing you to innovate and deliver at an unmatched scale. They More ❯
Posted:

🚀 C++ Engineer – World’s Largest (Almost!) Supercomputer

london (city of london), south east england, united kingdom
Augmentti
by colleagues who are at the top of their fields, pushing the boundaries of technology and finance every day. Innovation & Impact: Work in a modern, young codebase with minimal legacy code and technical debt. You’ll have the freedom to choose the best technology for the job, allowing you to innovate and deliver at an unmatched scale. They More ❯
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Digital Web Manager

Bromley, London, United Kingdom
Bromcom Computers Plc
CMS governance, analytics setup (GA4, GTM), and integration with Dynamics 365 and Power BI. Own website performance, accessibility, and SEO optimisation. Oversee ongoing maintenance, updates, and documentation to avoid legacy code issues. Skills & Experience Essential Experience leading website redevelopment or CMS migration projects. Knowledge of CMS platforms such as Optimizely, Umbraco, or WordPress. Working knowledge of HTML, CSS More ❯
Employment Type: Permanent
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Mobile Application Developer - Mobile, Full Remote, £100k + Equity

East London, London, United Kingdom
Hybrid / WFH Options
Venchr
Founding Engineer - £100k - Remote, AI + Equity What if your next role let you rewrite the rules of mobile connectivity—without ever touching legacy code? We’re looking for a Senior Mobile Developer to join a remote-first team (Europe-based) that’s building the future of mobile carriers from the ground up. This isn’t about patching … build and scale consumer tech. If you’ve built and shipped Flutter apps at scale, and you’re excited by the idea of disrupting an entire industry with elegant code and bold ideas, we’d love to talk. Apply now or reach out if you want to chat more about the role. Venchr is an equal-opportunity employer. All More ❯
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Mobile Application Developer - Mobile, Full Remote, £100k + Equity

City of London, London, United Kingdom
Hybrid / WFH Options
Venchr
Founding Engineer - £100k - Remote, AI + Equity What if your next role let you rewrite the rules of mobile connectivity—without ever touching legacy code? We’re looking for a Senior Mobile Developer to join a remote-first team (Europe-based) that’s building the future of mobile carriers from the ground up. This isn’t about patching … build and scale consumer tech. If you’ve built and shipped Flutter apps at scale, and you’re excited by the idea of disrupting an entire industry with elegant code and bold ideas, we’d love to talk. Apply now or reach out if you want to chat more about the role. Venchr is an equal-opportunity employer. All More ❯
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Legacy Code
London
10th Percentile
£75,425
25th Percentile
£85,000
Median
£100,000
75th Percentile
£115,000
90th Percentile
£125,000