26 to 38 of 38 Refactoring Jobs in the UK excluding London

motivated by meaningful technical challenges. Key Responsibilities Design, build, test, and deliver new features within a desktop-based software platform Contribute to ongoing refactoring and modernisation of a large, established codebase Investigate and resolve complex technical issues, maintaining high quality standards Engage with users to diagnose and address reported problems ...

billing processes. Write and refine SQL queries, stored procedures, and SSIS packages to support robust and scalable data workflows, with a focus on refactoring legacy logic for reliability and performance improvements. Analyse and resolve data challenges within ERP and financial systems, working closely with development teams to align manual workflows ...

including stored procedures, views, functions, tables, and indexes - Proactively analyse and resolve database performance bottlenecks using execution plans, indexing strategies, and query refactoring - Optimise high-volume transactional queries, reporting workloads, and data integration jobs - Design and support scalable database patterns suitable for high-availability environments - Support application and integration development ...

transformation roadmap. Lead the design and optimisation of search systems , ensuring relevance, scalability, and reliability. Oversee the evolution of existing systems — maintaining and refactoring C# codebases Champion engineering best practices across security, performance, testing, and continuous delivery. Provide architectural leadership across multiple teams, establishing standards and reusable patterns that scale. ...

enthusiastic about bringing AI into development teams in ways that genuinely stick, including both: AI tooling to support development (e.g. coding assistants, test generation, refactoring support, documentation acceleration, internal workflows) Building products that incorporate AI/LLM features (e.g. assistants/coplots, summarisation, document understanding, semantic search/RAG, extraction ...

Building and maintaining ML ready datasets to support model training, inference, and experimentation Improving data warehouse design and performance within AWS Redshift, including refactoring poorly structured data Integrating new and underused data sources to unlock additional value Supporting feature store development and data pipelines for A/B testing ...

maintainability Support backend services powering web and mobile learning platforms What We're Looking For Strong commercial Go/Golang experience Experience improving and refactoring existing systems Good understanding of scalable backend architecture Pragmatic engineer with strong software fundamentals AI experience is a bonus, but strong Go engineering ...

.NET Core, and SQL Server expertise to help design, build, and modernise enterprise Windows applications and services. You’ll play a key role in refactoring legacy systems into modern .NET solutions while contributing to future cloud migration projects. What you’ll be doing: • Developing and maintaining Windows applications and services … Refactoring and migrating legacy code into C# .NET • Collaborating with technical teams, business users, and stakeholders • Supporting cloud and Azure-based architecture initiatives • Participating in code reviews, Agile delivery, and technical planning What we’re looking for: • 3+ years’ commercial experience with C#, .NET/.NET Core, WinForms ...

system design and deliver high-quality software. Mentor team members, coaching them on best practices and improvements. Review pulls requests and plan and action refactoring efforts to support the wider product strategy. Develop new features according to specification and triage and fix defects. Required Skills & Qualifications: Advanced expertise in C++ … coach, mentor, and upskill developers at various experience levels through hands-on collaboration, code reviews, and knowledge-sharing. Experience in identifying, prioritising, and refactoring code to improve modularity, testability, and maintainability. Ability to contribute to architectural decisions and technical strategy, supporting the broader product vision. Strong decision-making and influencing ...

Airbyte), moving beyond standalone SQL Server environments. Leading integrations – supporting our NetSuite migration and creating scalable data frameworks for future acquisitions. Modernising legacy systems – refactoring complex, business-critical T-SQL into modular, high-performance cloud workflows. Raising engineering standards – introducing Git, CI/CD pipelines, automated testing and best-practice … Engineer 3–5+ years’ experience in Data Engineering, ideally involving cloud warehouse builds or migrations Expert-level SQL/T-SQL with proven experience refactoring and optimising complex logic Hands-on experience with cloud data warehouses (e.g. BigQuery, Snowflake), ingestion tools (Airflow, Airbyte), and analytics tooling such ...

contract role for someone who wants genuine ownership of a modern data platform - not ticket-taker work, but real engineering: designing pipelines, refactoring architecture, and shaping how a Databricks-first platform evolves in a regulated financial services environment. What you'll be doing Building and refactoring data pipelines in Databricks ...

complex software systems. The role would suit someone with strong Python development experience, ideally combined with exposure to C/C++ integration , performance improvement, refactoring, legacy system modernisation or engineering-heavy environments. You will work on technically challenging codebases where reliability, maintainability and engineering quality are critical. This will include … Investigating complex defects and incidents Performing root cause analysis Implementing durable fixes Refactoring and improving existing software Supporting architecture changes as requirements evolve Helping modernise codebases, tooling and engineering standards The role requires someone who is comfortable working across established systems, improving existing code and supporting other engineers through mentoring ...

Overview We are seeking an experienced Oracle Database 19c Developer/Application Maintenance Engineer to support and enhance bespoke applications built on Oracle technologies. This role focuses on maintaining and improving existing systems, resolving production ...