Legacy Code Jobs in London

1 to 25 of 43 Legacy Code Jobs in London

Mid PHP Developer

London, United Kingdom
Hybrid / WFH Options
Salt Digital Recruitment
work on impactful projects that support NHS patients and service users across the UK. Responsibilities: Develop, maintain, and enhance PHP applications. Optimise and refactor legacy code for performance, security, and maintainability. Collaborate with cross-functional teams to design and implement new features. Ensure seamless integration between legacy systems and new applications. Maintain high code quality through testing, code reviews, and best practices. Provide technical support for live deployments when required. Experience: Proven experience in PHP development. Strong front-end skills, particularly in Vue.js, JavaScript, HTML, and CSS. Proficiency in SQL, preferably PostgreSQL. Previous experience More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Lead Software Engineer - Sustainable Cloud Native Platform

London, England, United Kingdom
Burns Sheehan
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 More ❯
Posted:

Lead Software Engineer - Sustainable Cloud Native Platform

London, United Kingdom
Burns Sheehan
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 More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer - Sustainable Cloud-Native Platform

London, England, United Kingdom
Burns Sheehan
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 More ❯
Posted:

Lead Software Engineer

London Area, United Kingdom
Burns Sheehan
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 More ❯
Posted:

Lead Software Engineer

london, south east england, united kingdom
Burns Sheehan
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 More ❯
Posted:

Senior Software Engineer

London Area, United Kingdom
Burns Sheehan
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 More ❯
Posted:

Senior Software Engineer

london, south east england, united kingdom
Burns Sheehan
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 More ❯
Posted:

Senior Software Engineer (Hiring Immediately)

London, UK
Burns Sheehan
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 More ❯
Employment Type: Full-time
Posted:

Lead Software Engineer

London, England, United Kingdom
Burns Sheehan
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 More ❯
Posted:

Senior Software Engineer

London, England, United Kingdom
Burns Sheehan
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 More ❯
Posted:

Senior Software Engineer - Unified Platform (Hiring Immediately)

London, UK
TN United Kingdom
goals. Expectations: Building systems with a focus on testing, reliability, scalability, and maintainability. Designing, modeling, and programming in various languages and technologies. Working on legacy code and greenfield development. Driving projects to completion. Learning and promoting new technologies and best practices. Providing on-call support as needed. Collaborating More ❯
Employment Type: Full-time
Posted:

Senior QA Engineer

London, United Kingdom
Zeelo
in from the start, while championing best practices and modern QA approaches. We're a fast-moving TransitTech business with plenty of exciting challenges-legacy code, evolving architecture, and new features that need rigorous testing across web, iOS, and Android platforms. If you thrive in an environment where More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior QA Engineer (Hiring Immediately)

London, UK
Zeelo
in from the start, while championing best practices and modern QA approaches. We’re a fast-moving TransitTech business with plenty of exciting challenges—legacy code, evolving architecture, and new features that need rigorous testing across web, iOS, and Android platforms. If you thrive in an environment where More ❯
Employment Type: Full-time
Posted:

Staff Software Engineer - Fintech

London, United Kingdom
Hybrid / WFH Options
Ebury
applications. Proficiency in constructing and managing services, including establishing standard APIs, integrating monitoring and alerting services, and expert integration with external systems. Comfort with legacy code, allowing you to maintain it and propose improvements once familiar with our workflows to help reduce technical debt. A strong commitment to … quality, expecting your code to be testable and well-covered with unit and integration tests. Familiarity with CI Jenkins pipelines and Terraform for the deployment of services and infrastructure is a plus. Demonstrated leadership experience in guiding engineering teams through high-impact projects, fostering a collaborative and innovative team More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer (Kotlin) (Hiring Immediately)

London, UK
ENGINEERINGUK
processes e.g. Google Play Store Experience in UI development on a direct-to-consumer product Comfortable writing in cutting edge technologies as well as legacy code Familiarity with design patterns and object-orientated programming Understanding of version control e.g. Git. Understanding of unit testing and/or test … the in-house expert in Kotlin, with the opportunity to work with contractors when scaling up for larger projects Build well-formed and logical code for new functionality and bug fixes across our U platform primarily for mobile Implement accessibility features across our app(s) Work from supplied designs More ❯
Employment Type: Full-time
Posted:

Software Engineer (Kotlin)

London, United Kingdom
ENGINEERINGUK
processes e.g. Google Play Store Experience in UI development on a direct-to-consumer product Comfortable writing in cutting edge technologies as well as legacy code Familiarity with design patterns and object-orientated programming Understanding of version control e.g. Git. Understanding of unit testing and/or test … the in-house expert in Kotlin, with the opportunity to work with contractors when scaling up for larger projects Build well-formed and logical code for new functionality and bug fixes across our U platform primarily for mobile Implement accessibility features across our app(s) Work from supplied designs More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer - Unified Platform

London, United Kingdom
DRW Holdings, LLC
systems with a constant focus on testing, reliability, scalability, and maintainability. Designing, modeling, and programming in a variety of languages and technologies. Working on legacy code as well as green field development. Initiative driving projects to completion. Learning and promoting new technologies with a focus on best practices. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Senior Software Engineer (CI) (Hiring Immediately)

London, UK
Hybrid / WFH Options
Spektrix
Including concepts like indexes and transaction scopes). Performance and monitoring. Security practices (e.g. understanding of OWASP Top 10). Be comfortable safely refactoring legacy code. Be able to work alongside client-facing support and product owners to analyse business requirements. Be keen to learn new technologies and skills. More ❯
Employment Type: Full-time
Posted:

Senior Software Engineer

London Area, United Kingdom
Prism Digital
Software Engineer | C#, SQL, Legacy Refactoring | Systematic Hedge Fund Rate: £650-750 per day IR35: Outside Duration: 12 months+ Location: 3 days in the office per week in Moorgate/Liverpool Street We’re working with a high-performing, systematic hedge fund based in the City to help them … experience as a hands-on software engineer Strong C#/.NET and SQL background, ideally in data-centric or financial systems Solid experience refactoring legacy applications without full test coverage Testing; You must be a meticulous Tester in TDD. Excellent at writing characterisation tests to lock down behaviour before … improving You must have a passion for refactoring to improve code quality and for automated testing at all levels; unit, integration & acceptance. You take pride in annotated, clean commits and structured workflows Having a ‘DevOps mindset’ and getting the importance of culture If you enjoy carefully improving legacy More ❯
Posted:

Senior Software Engineer

london, south east england, united kingdom
Prism Digital
Software Engineer | C#, SQL, Legacy Refactoring | Systematic Hedge Fund Rate: £650-750 per day IR35: Outside Duration: 12 months+ Location: 3 days in the office per week in Moorgate/Liverpool Street We’re working with a high-performing, systematic hedge fund based in the City to help them … experience as a hands-on software engineer Strong C#/.NET and SQL background, ideally in data-centric or financial systems Solid experience refactoring legacy applications without full test coverage Testing; You must be a meticulous Tester in TDD. Excellent at writing characterisation tests to lock down behaviour before … improving You must have a passion for refactoring to improve code quality and for automated testing at all levels; unit, integration & acceptance. You take pride in annotated, clean commits and structured workflows Having a ‘DevOps mindset’ and getting the importance of culture If you enjoy carefully improving legacy More ❯
Posted:

PHP DEVELOPER

London, United Kingdom
Hybrid / WFH Options
Pearson Carter
the App Development team Developing new features and API's in Laravel Working on unit tests as well as wider performance optimisation Maintenance of legacy code base (bespoke PHP) Integrating platform with third parties (e.g. EPOS and payment gateways) Performing code reviews and supporting less experienced devs More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer

London, United Kingdom
Deepstreamtech
making changes customers can see from day one. Some key projects on our roadmap this year include migrating key sections of our app from legacy code to Laravel and React, and working with our data team to integrate machine learning models into our data pipeline and front end. … a large number of documents from the web, index them, and allow users to search them through the web app. The majority of our code is written in PHP, but some parts of the data pipeline are written in Python, which is what we use for our data science More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer (Hiring Immediately)

London, UK
Deepstreamtech
making changes customers can see from day one. Some key projects on our roadmap this year include migrating key sections of our app from legacy code to Laravel and React, and working with our data team to integrate machine learning models into our data pipeline and front end. … a large number of documents from the web, index them, and allow users to search them through the web app. The majority of our code is written in PHP, but some parts of the data pipeline are written in Python, which is what we use for our data science More ❯
Employment Type: Full-time
Posted:
Legacy Code
London
25th Percentile
£85,000
Median
£110,000
75th Percentile
£115,000