16 of 16 Remote/Hybrid Refactoring Jobs in London

.Net Developer

Hiring Organisation
Wave Talent
Location
City of London, London, United Kingdom
maintain applications using C# and .NET/.NET Core Contribute to the development of RESTful APIs and backend services Work on the modernisation and refactoring of legacy .NET applications Collaborate with product managers, business analysts and QA to deliver high-quality features Write clean, testable and maintainable code following best ...

2 x Mid / Senior Full Stack Software Engineers - Hybrid - London

Hiring Organisation
MORRIS SINCLAIR RECRUITMENT LTD
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £100,000 per annum
appreciation for simple, maintainable design Experience in the financial industry is a plus Experience working with Third-party APIs is a plus Experience in refactoring and improving code performance and design is a plus Experience with Unit Testing is a plus Current tech stack C# .NET MVC Entity Framework (Code ...

Testers, Solutions Architect, C# Developers, IT support

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
across our stack (.NET Framework/.NET Core, HTML/CSS/TypeScript/React, Python, SQL Server, Oracle). The role focuses on refactoring legacy systems to reduce technical debt, improve reliability and performance, and embed modern security patterns across the service estate. In addition, the engineer will contribute ...

.Net Developer (Fully Remote)

Hiring Organisation
DMS Computer Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £65,000 per annum
will join our team to help us deliver high quality code for new and existing projects. Your main focus will be the development and refactoring of backend-services using C# .NET (full framework, .NET6) and supporting application delivery to multiple environments. The main responsibilities of the position include: Full stack ...

FX e Trading Senior Full Stack Engineer (React TypeScript + Java)

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£759 - £900 per day
through code reviews, design sessions, and hands-on pairing—encouraging thoughtful abstractions, clean architecture, and pragmatic delivery. Use AI development tools for assisted coding, refactoring, test generation, secure code analysis, documentation, and knowledge search—evaluating where AI accelerates while maintaining human oversight. Collaborate with stakeholders to translate trading requirements into ...

Senior Full Stack Engineer – FX e-trading – Java / React

Hiring Organisation
Atrium Workforce Solutions Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£759 - £900 per day
through code reviews, design sessions, and hands-on pairing—encouraging thoughtful abstractions, clean architecture, and pragmatic delivery. Use AI development tools for assisted coding, refactoring, test generation, secure code analysis, documentation, and knowledge search—evaluating where AI accelerates while maintaining human oversight. Collaborate with stakeholders to translate trading requirements into ...

AWS Architect

Hiring Organisation
Fairfield Consultancy Services Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £625 per day
will architect scalable, secure, cost-optimized target environments on AWS, guide containerization & modernization initiatives, and drive migration strategies such as rehost (lift & shift), replatforming, refactoring, and application consolidation . This role requires a blend of deep hands-on AWS knowledge, architectural leadership, stakeholder management, and the ability to articulate business ...

Senior Software Engineer

Hiring Organisation
Tiro Partners Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £120,000 per annum
high-impact legacy services while building AI-powered engineering workflows. What You'll Do Modernise critical legacy Java services using AI-driven analysis and refactoring Apply migration patterns (e.g. strangler fig) to deliver clean, modern APIs Ship improvements in fast cycles with measurable gains in performance and reliability Build ...

Java Developer - AI first development

Hiring Organisation
Harvey Nash
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £550 per day
engineering, model selection, and LLM capabilities. Proven AI Impact Demonstrated success in using AI to improve productivity and code quality. Experience with AI-assisted refactoring, test generation, and documentation at scale. Please apply within for further details - Matt Holmes, Harvey Nash ...

Java Developer - AI/Modernisation Project

Hiring Organisation
Harvey Nash
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £575 per day
engineering, model selection, and LLM capabilities. Proven AI Impact Demonstrated success in using AI to improve productivity and code quality. Experience with AI-assisted refactoring, test generation, and documentation at scale. Please apply within for further details - Matt Holmes, Harvey Nash ...

DevOps Engineer (Fully Remote) Inside IR35 | 6-12 Month Contract

Hiring Organisation
Synechron
Location
City of London, London, United Kingdom
SAST, etc.) Optimization: Enhance performance through parallel builds, caching, and dependency prefetching Integrity & Security: Ensure artifact integrity via SHA-mapping and reproducible inputs while refactoring legacy scripts to modern standards. Mentorship: Act as a subject matter expert for engineers on secure pipeline development and supply-chain practices 🎯 Major Requirements ...

DevOps Engineer (Fully Remote) Inside IR35 | 6-12 Month Contract

Hiring Organisation
Synechron
Location
East London, London, United Kingdom
SAST, etc.) Optimization: Enhance performance through parallel builds, caching, and dependency prefetching Integrity & Security: Ensure artifact integrity via SHA-mapping and reproducible inputs while refactoring legacy scripts to modern standards. Mentorship: Act as a subject matter expert for engineers on secure pipeline development and supply-chain practices 🎯 Major Requirements ...

Senior Backend Developer

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 90,000 - 100,000 Annual
maintaining scalable Back End systems Comfortable working with APIs, databases, and distributed systems Strong problem-solving skills and a pragmatic approach to debugging and refactoring Experience working with version control, testing practices, and code reviews Product-minded - able to think beyond the code and understand real user impact Experience working ...

SAS Consultant

Hiring Organisation
Focused Futures Consultancy LTD
Location
London Area, United Kingdom
target-state SAS architecture aligned to AWS. Repoint SAS workloads (ETL, models, analytics, reporting) from Cloudera to AWS. Provide guidance on code compatibility, refactoring, and modernization opportunities. Ensure solutions are secure, scalable, and compliant with banking regulations. Act as the technical authority, collaborating with architects, data engineers, and stakeholders. What ...

Senior Full Stack Engineer

Hiring Organisation
Searchland
Location
City of London, London, United Kingdom
running on Node.js/Express Model and query relational and search-optimized data using PostgreSQL and Elasticsearch Contribute to backend architecture, performance tuning, and refactoring work Collaborate with technical and non-technical teammates to clarify requirements and break down work Own implementation from development through to deployment and monitoring ...

Application Architect

Hiring Organisation
MPower Plus
Location
London Area, United Kingdom
Practical experience of network segmentation of an existing network into zones, segments, end-to-end segregation from design through to delivery and migration (e.g. refactoring, deployment), and accompanying standards. • Documentation of the above areas including but not limited to: Standards, Patterns, Strategies, Roadmaps and recommendation papers – positioned at senior leadership ...