13 of 13 Permanent Legacy Code Jobs in England

Lead Application Architect

Hiring Organisation
BESTWAY WHOLESALE LIMITED
Location
North West London, London, United Kingdom
Employment Type
Permanent
designs, and the development team, who deliver them. You will turn HLDs into well-documented, implementable designs (Low-Level Design) and make sure the code that results is consistent, secure and maintainable. About Bestway Bestway Group is a diversified multinational family owned business with annualised turnover in excess … communities through its operations across the UK, Pakistan and the Middle East Responsibilities: Application & low-level design: Own component-level (C4 Level 3) and code-level (C4 Level 4) design and LLDs for our applications. Translate Solution Architects HLDs into clear implementation designs, and make sure the team understands ...

Lead AI Engineer

Hiring Organisation
Sanderson
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£550.00 - £660.00 per day
workflows, including model selection, prompt and harness engineering, tool integration and reusable skills. Support the adoption of AI across the SDLC, including test generation, code review, documentation, legacy code understanding and modernisation. Run structured proofs of value with clear hypotheses, baselines, success criteria and evidence-based outcomes. … integrating agents with tools and services. Strong prompt engineering and harness engineering experience. Experience with AI coding and agent tooling such as Claude Code, GitHub Copilot, Codex, Kiro or MCP. Knowledge of applying AI across the software development lifecycle. Experience defining engineering standards, guardrails or practices adopted across multiple ...

High-Integrity Software Engineer

Hiring Organisation
Hackajob Ltd
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
other colleagues at a time. In addition, you'll take an active role in unlocking the potential of junior colleagues: encouraging idiomatic code, demonstrating engineering rigour, and sharing hard-won knowledge with your peers. Youll also help drive our engineering processes to maintain code quality while balancing realistic … timescales and client requirements. Desirable Skills Professional experience in the design and implementation of complex projects, ideally both clean-slate projects and updates to legacy code bases. Comfortable with platform APIs, development environments and native debugging approaches. Experience leading a team of developers through a complete project lifecycle ...

High-Integrity Software Engineer

Hiring Organisation
Hackajob Ltd
Location
London, England, United Kingdom
other colleagues at a time. In addition, you'll take an active role in unlocking the potential of junior colleagues: encouraging idiomatic code, demonstrating engineering rigour, and sharing hard-won knowledge with your peers. You'll also help drive our engineering processes to maintain code quality while balancing … timescales and client requirements. Desirable Skills Professional experience in the design and implementation of complex projects, ideally both clean-slate projects and updates to legacy code bases. Comfortable with platform APIs, development environments and native debugging approaches. Experience leading a team of developers through a complete project lifecycle ...

VP, Product & Engineering Coda & FP&A

Hiring Organisation
Unit4
Location
Greater London, United Kingdom
Employment Type
Full Time
slowing the pace of new development. Demonstrable hands-on experience applying AI to software engineering at team scale with measurable results (e.g. AI-driven code modernisation, test generation for legacy code or agentic development workflows) and an informed point of view on how AI will change both ...

FPGA Engineer / Senior FPGA Engineer - Power Supplies

Hiring Organisation
DIAMOND LIGHT SOURCE LIMITED
Location
London, England, United Kingdom
FPGA Engineer or Senor FPGA Engineer level, depending on the strength of your skills, experience and qualifications. Key Responsibilities: Develop, maintain, and debug HDL code for Xilinx FPGAs in Vivado, implementing full-cycle firmware for Diamond magnet power supplies, including feedback control, filtering, and interlock handling using state machines. … with hardware engineers and the Control Group to optimise performance, resolve issues, and develop reliable Ethernet-based control interfaces. Review, refactor, and document HDL code in line with Diamond standards, ensuring proper version control and maintainability. Contribute to electronic circuit design, simulation (SPICE, MATLAB), PCB design, and prototype testing ...

FPGA Engineer / Senior FPGA Engineer - Power Supplies

Location
Didcot, Berkshire, United Kingdom
FPGA Engineer or Senor FPGA Engineer level, depending on the strength of your skills, experience and qualifications. Key Responsibilities: Develop, maintain, and debug HDL code for Xilinx FPGAs in Vivado, implementing full-cycle firmware for Diamond magnet power supplies, including feedback control, filtering, and interlock handling using state machines. … with hardware engineers and the Control Group to optimise performance, resolve issues, and develop reliable Ethernet-based control interfaces. Review, refactor, and document HDL code in line with Diamond standards, ensuring proper version control and maintainability. Contribute to electronic circuit design, simulation (SPICE, MATLAB), PCB design, and prototype testing ...

Senior Software Development Engineer

Hiring Organisation
Expedia
Location
London, UK
Employment Type
Full-time
Hands on experience with Kotlin for server side, or/and React and Typescript for the frontend. Proven track record of refactoring and modernising legacy codebases and architectures, improving performance and maintainability while minimising risk and customer impact. Track record of integrating and optimizing AI/ML-enabled features ...

Staff Product Engineer

Hiring Organisation
Consortia
Location
London, England, United Kingdom
product outcomes, designing, building and scaling services from first principles with the autonomy to make technical decisions stick.With a low-meeting culture, zero legacy code and colleagues who are all staff-level engineers with 7+ years’ experience, this is a place for experienced engineers who want to think … secure, performant and scalable services in PHP (Laravel/Symfony) and JavaScript, treating non-functional requirements as first-class problems. Write clean, well-tested code using patterns like DDD and CQRS, keeping the codebase modern through proactive refactoring and avoiding unnecessary technical debt. Collaborate with DevOps engineers to ensure ...

Unified Platform - Business Experience - Software Engineer

Hiring Organisation
DRW
Location
London, UK
Employment Type
Full-time
small- to medium-sized applications that business people use in their day-to-day work. What you will do in this rolePrimarily work on legacy code, and sometimes work on green-field development. Lead small projects to completion. Hands on with business users, sometimes collaborating with them … solutions. Strong verbal and written communication skills. Fluency in one or both of Python and C#.Ability to work with AI coding assistants (e.g. Claude Code) to accelerate software development. Bachelor's degree in Computer Science or Software Engineering (or equivalent).6+ years of Software Engineering experience. For more information ...

NetSuite Developer

Hiring Organisation
Buchan and London Recruitment Ltd
Location
Wantage, Oxfordshire, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £70,000 per annum
join our growing team working on our NetSuite CRM system. Principal Duties: Generation of Suite Scripts to fulfil business requirements. Understand, Maintain & Update Legacy Code Ability to accurately document & communicate scripts & workflows. NetSuite Report Generation & Modification. NetSuite System Updates – including products, classes, customers. Ensuring that workflows within NetSuite ...

NetSuite Developer/Administrator

Hiring Organisation
Buchan and London Recruitment
Location
OX12, Whatscombe, West Berkshire, Berkshire, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum
join our growing team working on our NetSuite CRM system. Principal Duties: Generation of Suite Scripts to fulfil business requirements. Understand, Maintain & Update Legacy Code Ability to accurately document & communicate scripts & workflows. NetSuite Report Generation & Modification. NetSuite System Updates – including products, classes, customers. Ensuring that workflows within NetSuite ...

C++ Software Engineer (C++ / MFC) – Contract

Hiring Organisation
Ripple Recruitment Ltd
Location
Cambridge, Cambridgeshire, United Kingdom
Employment Type
Full-Time
Salary
£550.00 per day
used in scientific instrumentation. You'll work on both new features and day-to-day maintenance, alongside UX designers and applications specialists. Debugging existing code is a core part of the job, not a side task. From day one you'll need to investigate issues raised from the field … dumps Matching PDB symbol files to the correct build Using Visual Studio and/or WinDbg to read call stacks and find the failing code Diagnosing problems such as access violations, memory leaks, version or DLL mismatches, and threading or deadlock issues Fixing the root cause and verifying ...