176 to 200 of 257 Refactoring Jobs in London

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 ...

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 ...

Lead Software Engineer - React (Web)

Hiring Organisation
JP Morgan Chase
Location
London, UK
Employment Type
Full-time
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 ...

Mainframe Pre-Sales Lead

Hiring Organisation
MBR Partners
Location
London, United Kingdom
Salary
£ 70 K
Mainframe Modernisation Pre-Sales Solution Architect provides technical pre-sales support for a leading global technology services provider’s mainframe application modernisation and refactoring solutions, helping enterprises modernise and migrate mainframe workloads to cloud-based platforms.This is a customer-facing role requiring deep technical expertise in mainframe systems alongside modern ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
stays on building rather than managing. The desk relies on the systems you'll maintain, so stability matters, but there's an appetite for refactoring and cutting technical debt rather than patching around it. You'll be one of a handful of engineers on the futures side, in a culture ...

Senior Software Engineer, Trading Platform GUI

Location
Greater London, England, United Kingdom
object‐oriented programming Experience in performance tuning data‐intensive systems Comfortable with ownership of a significantly large and complex codebase Desirable skills Experience with refactoring existing software to provide performance or architectural improvements while preserving current functionality Experience with Docker Experience with writing integration tests Experience optimizing distributed systems Open ...

Platform Engineer @ Hnry

Location
Greater London, England, United Kingdom
Engineering team release to production multiple times per day. We review each others code, and set aside time for hacking on experimental features, refactoring and/or learning new things. We work hard and finish on time, no crazy hours. Salary banding: £60,000 - £70,000 per annum At Hnry ...

Lead Software Engineer - React

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 ...

R-04 Technical Project Manager – DevOps Full-time · London · On-site Travel · HK / TW

Location
Greater London, England, United Kingdom
cost-saving models with internal Tech Leads and the external vendor, including Reserved Instances (RIs), Savings Plans (SP), Spot Instances, and architectural refactoring for cost efficiency. Budget Governance Establish automated cost allocation tagging, departmental chargeback models, and real-time budget anomaly alerts to ensure rigorous cloud financial governance. Primary Vendor ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
C++ — with a focus on performance, reliability, and maintainability Exposure to large-scale or longitudinal data processing (e.g. volumetric or time-series datasets) Experience refactoring or migrating software into modern architectures Familiarity with motion control, robotics, or kinematic systems Experience working with or alongside FPGA-based systems Physical Demands Fine ...

Azure Data Engineer (Fabric & Cloud Data Platform)

Location
Greater London, England, United Kingdom
controls for sensitive or identifiable data, utilizing Azure Key Vault, Azure Monitor, Log Analytics, and Microsoft Purview. Data Integration: Proven track record of migrating, refactoring, or connecting legacy SQL/stored procedure logic and existing pipelines into modern cloud formats. Preferred Qualifications & Certifications Certifications: Microsoft Certified: Azure Data Engineer Associate ...

Azure Data Engineer (Fabric & Cloud Data Platform)

Hiring Organisation
Rackspace Technology
Location
Bromley, Kent, United Kingdom
Salary
£ 80 K
security controls for sensitive or identifiable data, utilizing Azure Key Vault, Azure Monitor, Log Analytics, and Microsoft Purview.Data Integration: Proven track record of migrating, refactoring, or connecting legacy SQL/stored procedure logic and existing pipelines into modern cloud formats.Preferred Qualifications & CertificationsCertifications: Microsoft Certified: Azure Data Engineer Associate ...

Developer Engagement Lead - AI Coding Tools - MSDE

Hiring Organisation
Morgan Stanley
Location
London, United Kingdom
Salary
£ 100 K
role:Engage DevelopersRun demos, workshops, office hours, and enablement sessionsHelp teams identify practical use cases for AI coding tools across coding, testing, refactoring, documentation, and code reviewCreate reusable examples, patterns, and guidance that accelerate adoptionGather developer feedback and translate it into actionable insights for platform and product teamsDrive Practical AdoptionDevelop ...

Principal Product Engineer

Location
Greater London, England, United Kingdom
with rigorous human judgement. Key Responsibilities Technical Direction : Lead the backend technical effort, establish architectural direction, and guide the team through complex design choices, refactoring priorities and engineering trade-offs. NestJS Architecture : Design and evolve a clean, modular NestJS architecture with clear module boundaries, dependency management, testability and maintainable conventions. ...