176 to 200 of 273 Refactoring Jobs in London

Application Transformation Advisor

Hiring Organisation
DXC Technology
Location
London, United Kingdom
Salary
£ 80 K
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, integrations, and operational ...

Lead Software Engineering - Java -ETT - Options Algorithmic Trading

Location
Greater London, England, 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 Software Engineering - C++

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
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 Cloud Engineer

Location
Greater London, England, United Kingdom
including EKS, Kubernetes, networking, identity, and observability capabilities supporting enterprise-scale workloads Drive cloud migration programmes end-to-end , including application assessment, readiness analysis, refactoring strategies, and transition planning Shape and deliver platform roadmaps , enabling scalable, resilient, and cost-efficient cloud operations Champion automation-first engineering , using Infrastructure-as-Code ...

Lead Software Engineering - C++

Location
Greater London, England, 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 Cloud Engineer

Hiring Organisation
London Stock Exchange Group
Location
London, United Kingdom
Salary
£ 100 K
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 ...

Director of Platform Engineering

Location
Greater London, England, United Kingdom
Production Ownership: Oversee the maintenance and evolution of production software, implementing best-practice with an AI first software engineering approach (agile methodologies, unit testing, refactoring, rigorous code reviews, and CI/CD pipelines). Performance & SEO: Direct technical strategies for concurrency, profiling, and performance optimisation in high-traffic, live-event ...

Principal Software Engineer - C#

Location
Greater London, England, United Kingdom
safe to ship.* Communicate technical trade-offs clearly to trading, compliance, infrastructure and middle-office stakeholders; manage risk and escalate honestly.* Identify and drive refactoring toward the target architecture as the platform grows.**Experience/Competences**EssentialExperience:* 10+ years Financial Services building complex front-office trading systems, with demonstrated technical ...

Solutions Architect, AWS Startups

Hiring Organisation
AmazonWebServices
Location
London, United Kingdom
Salary
£ 80 K
learningPreferred qualification - Experience in customer-facing roles- AWS certification, such as, AWS Solutions Architect, or a similar cloud certification- Experience designing, building, refactoring or operating large scale and impactful IT systems - either on premises or in the cloud- Knowledge of a modern programming language (Python, JavaScript, Go, .Net, Java, etc. ...

Principal Software Engineer - C#

Hiring Organisation
Liquidnet
Location
London, United Kingdom
Salary
£ 100 K
generated code safe to ship.Communicate technical trade-offs clearly to trading, compliance, infrastructure and middle-office stakeholders; manage risk and escalate honestly.Identify and drive refactoring toward the target architecture as the platform grows.Experience/CompetencesEssentialExperience:10+ years Financial Services building complex front-office trading systems, with demonstrated technical leadership through ...

Principal Software Engineer - C#

Hiring Organisation
Liquidnet
Location
London, UK
Employment Type
Full-time
safe to ship. Communicate technical trade-offs clearly to trading, compliance, infrastructure and middle-office stakeholders; manage risk and escalate honestly. Identify and drive refactoring toward the target architecture as the platform grows. Experience/CompetencesEssentialExperience:10+ years Financial Services building complex front-office trading systems, with demonstrated technical leadership ...

Lead Software Engineer - Proxy/SSE Network Security

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 80 K
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 Software Engineer - Proxy/SSE Network Security

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 Software Engineer - Proxy/SSE Network Security

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 ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
technical decisions and challenge how things are done. They’re looking for engineers who have built systems from scratch or been involved in significant refactoring and re-platforming projects. LNG or ETRM experience is a bonus, but modern software engineering experience is the priority. If you enjoy taking complex systems ...

Software Engineer

Location
Greater London, England, United Kingdom
codebase stays an asset, not a liability, as we scale Looking for opportunities to reduce complexity in a fast-moving codebase: refactoring, deleting, and making the right thing the easy thing to do Integrating and structuring raw platform data into clean, reliable inputs: the formats our downstream systems ...

Senior KDB+ Developer

Hiring Organisation
Luxoft
Location
London, United Kingdom
Salary
£ 80 K
both real time and historical workloads.Collaborate closely with Risk function teams to translate business requirements into efficient, scalable and performant code.Drive continuous improvement through refactoring, performance benchmarking and adoption of best practicesMentor and guide junior and mid-level developers, fostering a culture of technical excellence, code quality and knowledge sharing.Participate ...

Senior KDB+ Developer

Location
Greater London, England, United Kingdom
time and historical workloads. Collaborate closely with Risk function teams to translate business requirements into efficient, scalable and performant code. Drive continuous improvement through refactoring, performance benchmarking and adoption of best practices. Mentor and guide junior and mid-level developers, fostering a culture of technical excellence, code quality and knowledge ...

Engineering Team Lead

Location
Greater London, England, United Kingdom
engineering workflows (e.g., coding assistants, test generation, anomaly detection, intelligent routing) or product features. Background in leading distributed teams and large‐scale refactoring or platform modernisation initiatives. Key Behaviours & Attributes: Ownership mindset: accountable for outcomes, proactive risk management, and follow‐through. Pragmatic decision‐making with an eye for long‐term ...

Senior Software Development Engineer

Hiring Organisation
Expedia
Location
London, United Kingdom
Salary
£ 80 K
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/ML-enabled features ...

Senior Software Development Engineer

Location
Greater London, England, United Kingdom
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 Software Engineer (Data)

Location
Greater London, England, United Kingdom
businesses Monitor performance metrics for how Data is produced and consumed, and respond to Data incidents. What we're looking for Experience building, designing, refactoring or optimising data lakes and data warehouses from a variety of data sources using data modelling techniques Experience in Building Extract Transform and Load ...

Lead Software Engineering - Java -ETT – Options Algorithmic Trading

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
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 ...

AI Engineer

Location
Greater London, England, United Kingdom
Have AI/LLM integration experience (APIs, RAG, tool calling, agent frameworks, hosted or local inference). Background improving legacy systems through testing, refactoring, and reducing technical debt. Breadth across desktop, mobile, backend, or systems software. CI/CD experience (GitLab, Docker) and Python for automation. Experience or interest ...

Software Engineer III - React

Hiring Organisation
JP Morgan Chase
Location
London, United Kingdom
Salary
£ 100 K
authorized AI coding assist tools within the work environment to improve code quality, delivery speed, and productivity across complex deliverables (e.g., code generation/refactoring, unit test creation, documentation), while validating outputs through peer review, automated testing, and secure coding standards; contributes learnings and reusable patterns to improve broader team ...