22 of 22 Permanent Refactoring Jobs in London

mature, intrinsically motivated technology leader who loves data. Our daily work spans building API integrations, maintaining robotic data-extraction processes, writing OCR engines, and refactoring data pipelines. At the same time, we’re beginning to invest in AI (agentic frameworks, LLMs for data extraction) and data storage innovation. Our stack ...

legacy or over engineered ETL approaches and decommission redundant components Promote AI driven development practices (e.g., AI assisted code generation, test creation, documentation, and refactoring) with appropriate guardrails around security, correctness, and maintainability Enable integration with AI platforms by shaping data products for AI use cases and defining patterns ...

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 ...

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 ...

data architecture, with at least 3 years in a leadership position Expert-level Databricks, Azure and SQL/Python Proven track record of refactoring legacy estates onto modern platforms without breaking things GCP and BigQuery experience is a strong advantage High EQ, comfortable presenting to leadership and managing non-technical ...

implement these. Responsibilities: Build and enhance Python-based analytics features with a focus on performance and scalability Improve integration between Python and C# systems, refactoring where needed Optimise complex data workflows and large-scale calculations Review code, share best practices, and support team development Champion strong engineering practices including testing ...

ensure their success Take accountability for the successful technical operation of owned systems Embed AI-augmented development practices including AI-assisted coding, testing, refactoring, analysis and documentation Ensure AI usage enhances sound engineering judgement and design discipline Define and coach architectural and design patterns supporting safe and effective AI usage ...

ensure their success Take accountability for the successful technical operation of owned systems Embed AI-augmented development practices including AI-assisted coding, testing, refactoring, analysis and documentation Ensure AI usage enhances sound engineering judgement and design discipline Define and coach architectural and design patterns supporting safe and effective AI usage ...

very data driven, the analytical/mathematical product covers Energy Power Trading, Storage, and Power Modelling. Ideally, you’ll have experience of designing, refactoring, implementing and testing C# code, with a focus on maintainability, testability and performance. This company has a collaborative environment where they like their Developers to have ...

delivery architectures • Experience with security at the network edge (DDoS protection, authentication protocols, TLS termination) • Demonstrated best-practice software engineering: unit testing, code reviews, refactoring, continuous deployment L5 Expectations • Responsibly leverages AI, using it effectively for high productivity without compromising availability or OE burden • Owns and delivers medium-complexity features ...

redesign of their data stack, including containerising workflows, migrating to cloud SQL, and introducing tools like Prefect. Maintain and optimise 60 Python pipelines, refactoring legacy code into modular components. Keep Power BI dashboards accurate and up to date, supporting evolving business needs. Help implement validation and anomaly detection within their ...

leadership position. Expert level proficiency in Databricks, Azure and SQL/Python, with GCP and BigQuery experience highly desirable. A proven track record of refactoring legacy data estates and migrating them to modern platforms without disrupting business continuity. A player-coach mindset, equally comfortable leading a team and writing production ...

ELIGIBLE FOR SC CLEARANCE* What you'll be doing: Building and configuring applications in a Microsoft Dynamics/Power Platform stack Documenting and refactoring complex programs/scripts. Ensuring team adherence to project quality standards Applying agreed standards and tools to achieve well-engineered outcomes. Communicating client specifications to development ...

leading role in that journey. This isnt a role where you inherit a polished environment. Its an opportunity to shape, modernise, and influence from refactoring legacy pipelines to building best-in-class data products using tools like Databricks, Azure, and GCP. Youll operate as the technical authority within the data ...

ensure their success Take accountability for the successful technical operation of owned systems Embed AI-augmented development practices including AI-assisted coding, testing, refactoring, analysis and documentation Ensure AI usage enhances sound engineering judgement and design discipline Define and coach architectural and design patterns supporting safe and effective AI usage ...

Have Experience working in regulated environments (financial services or government). Additional Salesforce certifications beyond core requirements. Experience supporting data model remediation or complex refactoring initiatives. 5. Qualifications Salesforce Certifications (Essential): Salesforce Administrator Platform App Builder Platform Developer I Platform Developer II Trailhead (to be maintained during assignment): Advanced Apex ...

comes from adding value immediately within a large, demanding codebase — understanding existing Java and .NET systems well enough to reason about trade-offs, guide refactoring or selective rewrites, and make sound architectural decisions under pressure. The roadmap you produce is as important as the changes themselves. A strong candidate will ...

evolving a long-lived execution platform while contributing to a broader modernisation effort. Day to day, that means a mix of careful refactoring, incremental improvements, and responding to real-time trading needs. You’ll be speaking directly with end users, making changes that have immediate impact, and shaping … services engineering (direct exposure required) Trading systems or execution platforms Hedge fund/systematic trading environment Algorithmic trading software development Software testing and safe refactoring practices Clear technical communication (working with traders and senior stakeholders) What You'll Work With C# .NET Framework SQL Server WinForms desktop applications Azure Kafka ...

development, porting existing code, debugging, and system optimisation. Key Responsibilities Design, develop, and maintain embedded firmware Work with existing codebases, including porting and refactoring Debug complex issues across software and hardware Collaborate closely with hardware engineers on system integration Contribute to architecture decisions and code quality Key Requirements Strong experience ...

Privileged access segregation Admin role separation Secure administrative workstations (SAWs) or equivalent concepts Organisational Unit (OU) structure design and analysis Experience designing, rationalising, and refactoring OU structures Strong understanding of OU‐based: Delegation models Group Policy inheritance Administrative boundaries Ability to assess the operational and security impact of OU changes ...

data model design Strong architectural knowledge of: Salesforce platform architecture Service Cloud and Experience Cloud Security, identity, and access controls Data model remediation and refactoring Proven ability to produce clear, governance-ready architecture documentation. Strong communication skills, able to explain complex technical concepts to senior and non-technical stakeholders. Experience ...

driving continuous improvement across Gold, Silver, and Bronze data layers. Own the roadmap for Sidetrade's traditional ML models, including creation of new models, refactoring and scaling existing ones, and managing on-premises model development and deployment. Define and execute Sidetrade's LLM fine-tuning strategy, building proprietary O2C intelligence ...