1 to 25 of 31 Refactoring Jobs in London

Lead Application Architect

Hiring Organisation
BESTWAY WHOLESALE LIMITED
Location
North West London, London, United Kingdom
Employment Type
Permanent
quality gates rather than manual policing. AI-assisted development: Lead the adoption of AI tools across the SDLC (code generation, code review, refactoring, test generation, documentation, legacy code analysis). Define guidelines for usage, review of AI-generated code, and security and IP protection, and measure the impact on delivery ...

Senior Engineer (Full-Stack)

Hiring Organisation
Liquidnet
Location
London, UK
Employment Type
Full-time
potential solutions. Lead conversations around software systems to enable meaningful conversations about wider system architecture with Engineers. Evolve systems towards target state architecture by refactoring and prioritisation of deliveries. Experience/CompetenciesEssential: Demonstrable industry experience as a Full Stack or Front/Backend Engineer in Typescript in a professional environment. ...

Lead C# Engineer

Hiring Organisation
WTW
Location
London, England, United Kingdom
Product Owner to define, refine and deliver the product backlog Designing and documenting software solutions meeting functional and non-functional requirements Implementing and refactoring product code (C#), following best practices for maintainability, testability and performance Implementing unit tests, developing test frameworks and associated automated test cases Reviewing and debugging code ...

Senior Site Reliability Engineer

Hiring Organisation
Elsevier
Location
Greater London, United Kingdom
Employment Type
Full Time
operational health and lifecycle of platform and product components. Requirements: · Advanced Terraform: Expertise in modules, providers, state management, lifecycle controls, drift detection, safe refactoring, and remote state (S3, locking, cross-stack dependencies). · AWS Operations: Hands-on experience managing production, multi-account, multi-region AWS environments across ...

R Developer

Hiring Organisation
Sanderson
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£400.00 - £600.00 per day
engineering practices. Essential Experience Expert-level commercial experience developing applications and solutions in R. Strong software engineering background, including production-grade coding practices. Experience refactoring and modernising complex or legacy R applications. Strong experience with data transformation pipelines and R package development. Experience designing automated testing, regression testing and validation ...

Lead Data Consultant - AWS / Databricks

Hiring Organisation
Centre4 Testing
Location
London, UK
Employment Type
Full-time
technical discovery and architecture alignment sessions with client engineering teams and technical leads. Act as a trusted technical advisor on trade-offs, performance optimization, refactoring, and risk mitigation. Communicate architectural concepts, decision records, and technical trade-offs clearly to both technical and non-technical stakeholders. Practice Building & Knowledge SharingBuild reusable ...

Lead Data Consultant - AWS / Databricks

Hiring Organisation
Scale Factory
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
technical discovery and architecture alignment sessions with client engineering teams and technical leads. Act as a trusted technical advisor on trade-offs, performance optimization, refactoring, and risk mitigation. Communicate architectural concepts, decision records, and technical trade-offs clearly to both technical and non-technical stakeholders. Practice Building & Knowledge Sharing Build ...

Senior Site Reliability Engineer

Hiring Organisation
Imanage
Location
London, UK
Employment Type
Full-time
Leading incident management and post-incident retrospectives, and coaching teams in these practices. iM Qualified Because I Have... Experience writing design documents, postmortems, and refactoring application code. Built automation to reduce operational burden or developed internal SaaS tools. Ability to advocate for SRE principles (e.g., SLOs vs SLAs) and introduce ...

Senior Software Engineer/Architect - Fintech

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
player with the ability to lead Experience managing the direction and design of a large codebase, such as evolution of architecture, interface design and refactoring Strong Python skills You have some experience working within Linux environments. You have a keen interest in Kubernetes and cloud-native technology. You have experience ...

UI Frontend Lead engineer - AEM & AI

Hiring Organisation
LANCESOFT LTD
Location
London, UK
Employment Type
Full-time
Claude Integration Demonstrate practical experience with Anthropic Claude and Claude Code for AI-assisted software engineering. Use Claude to accelerate UI development, code generation, refactoring, debugging, and documentation. Define AI-assisted engineering workflows across the frontend development lifecycle. 4. Engineering Excellence & DevOps Define frontend CI/CD practices using GitHub ...

Senior Salesforce Developer

Hiring Organisation
Morson Edge
Location
City of London, London, United Kingdom
Employment Type
Contract
Change Data Capture. Salesforce Architecture: Strong understanding of Salesforce cloud architecture, multi-tenant environments, platform security, data management and scalability. Performance Optimisation: Proven experience refactoring complex codebases, optimising Governor Limits and developing high-performance, maintainable solutions. DevOps and Deployment: Experience with Azure DevOps, source control, CI/CD processes ...

Python Developer / Team Lead - FinTech

Hiring Organisation
Client Server
Location
London, UK
Employment Type
Full-time
Python Developer/Team Lead you'll head up a small, talented tech team to deliver new features and enhancements as well as some refactoring work, contributing to the core banking platform which integrates with major players such as HSBC. There's a relatively young codebase and lots ...

Infrastructure Support Engineer - Cambridge

Hiring Organisation
Microtech Global Ltd
Location
London, UK
that handles real hardware requests from CI workflows Maintain and gradually improve our Python-based internal tooling (used daily by hardware and software engineers) — refactoring for maintainability, adding features, and applying better software practices where it adds value Manage NixOS servers through declarative configurations for reproducible, reliable deployments Provision ...

Software Engineer

Location
London, United Kingdom
release to production multiple times per day/li li We review each others code, and set aside time for hacking on experimental features, refactoring and/or learning new things/li li We work hard and finish on time, no crazy hours/li/ ...

Application Transformation Advisor

Hiring Organisation
DXC Technology
Location
London, UK
Employment Type
Full-time
Retain, Rehost, Replatform, Refactor, Repurchase, Retire, Relocate).Identify opportunities to simplify, rationalise, decommission, modernise, or migrate applications. Provide oversight of cloud migration, application refactoring, containerisation, and legacy modernisation initiatives. Shape transformation programmes from initial discovery through implementation and transition to BAU operations. Technical Debt RemediationAssess technical debt across applications, infrastructure ...

Lead Cloud Engineer

Hiring Organisation
London Stock Exchange Group
Location
London, UK
Employment Type
Full-time
platforms, including EKS, Kubernetes, networking, identity, and observability capabilities supporting enterprise-scale workloadsDrive cloud migration programmes end-to-end, including application assessment, readiness analysis, refactoring strategies, and transition planningShape and deliver platform roadmaps, enabling scalable, resilient, and cost-efficient cloud operationsChampion automation-first engineering, using Infrastructure-as-Code (Terraform, Ansible ...

Lead Software Engineer Python API - Fintech

Hiring Organisation
Client Server
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Lead Software Engineer you'll head up a small, talented tech team to deliver new features and enhancements as well as some refactoring work, contributing to the core banking platform which integrates with major players such as HSBC. There's a relatively young codebase and lots of new projects ...

Lead Product Manager

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £780/day
CloudWatch, Trusted Advisor, and Cost Explorer. Optimise infrastructure for performance, reliability, cost efficiency and operational excellence. * Cloud Migration & Modernisation Define migration strategies including rehosting, refactoring, replatforming, and containerisation. Design modern architectures involving microservices, serverless, APIs, and event driven patterns. * Stakeholder Engagement Act as the technical counterpart to product owners, business ...

Lead Infrastructure Engineer - Proxy/SSE Network Security (Corporate Sector)

Location
London, United Kingdom
authorized AI-assisted engineering practices within the work environment to improve code quality, delivery speed, and operational outcomes (e.g., AI-assisted code review/refactoring, test strategy acceleration, incident/root-cause analysis support), while establishing consistent validation standards (secure coding, peer review, automated testing) and promoting reuse of effective ...

Lead Infrastructure Engineer - Proxy/SSE Network Security (Corporate Sector)

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
authorized AI-assisted engineering practices within the work environment to improve code quality, delivery speed, and operational outcomes (e.g., AI-assisted code review/refactoring, test strategy acceleration, incident/root-cause analysis support), while establishing consistent validation standards (secure coding, peer review, automated testing) and promoting reuse of effective ...

Lead Infrastructure Engineer - Proxy/SSE Network Security (Corporate Sector)

Hiring Organisation
Hackajob Ltd
Location
Westminster, Greater London, UK
authorized AI-assisted engineering practices within the work environment to improve code quality, delivery speed, and operational outcomes (e.g., AI-assisted code review/refactoring, test strategy acceleration, incident/root-cause analysis support), while establishing consistent validation standards (secure coding, peer review, automated testing) and promoting reuse of effective ...

Sr Enterprise Sales Specialist Cloud Infrastructure RCPG

Hiring Organisation
AmazonWebServices
Location
London, UK
Employment Type
Full-time
establishing yourself as a trusted voice in your domain. You will engage across the full transformation lifecycle: Migrate: infrastructure landing and workload mobilityModernise: application refactoring, containerisation, serverless adoptionActivate Data: analytics, lake formation, AI/ML readinessDeploy Applications: GenAI, agentic workloads, intelligent automationYour role is to find, build, and close opportunities ...

Site Reliability-DevOps Engineer - Fully remote

Hiring Organisation
EFCI Group Ltd
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£60,000
debugging runtime failures under pressure (OOMKills, rollout errors). Managed PaaS-only experience is not sufficient. Advanced Terraform: Deep experience writing, modularising, and refactoring infrastructure definitions from scratch using Terraform and Terragrunt. Relational Database Competence: Ability to read slow-query logs and analyze EXPLAIN plans to fix indexing or locking ...

Senior Software Development Engineer

Hiring Organisation
Expedia
Location
London, UK
Employment Type
Full-time
speed of delivery. 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/ ...

Senior Analytics Solution Architect, UK & Ireland, Amazon Global Sales, AWS

Hiring Organisation
AmazonWebServices
Location
London, UK
Employment Type
Full-time
Glue, Kinesis, QuickSight, OpenSearch)Lead analytics modernisation — guide customers migrating from legacy platforms (Teradata, Oracle, Netezza, Hadoop) to cloud-native analytics, including ETL refactoring and performance validationPartner with AWS AGS sales teams — collaborate with Account Managers and Account Solutions Architects to identify analytics opportunities, shape deal strategy, and position ...