1 to 25 of 36 Permanent Refactoring Jobs in the UK

monoliths vs microservices). Drive consistency in coding standards, code review rigor, and software craftsmanship. Lead critical system architecture decisions, including technology stack evolution, refactoring legacy components, and designing future-state systems. Ensure integration patterns and service contracts across internal and external APIs are robust, secure, and scalable. System Integration ...

maintain applications using C# and .NET/.NET Core Contribute to the development of RESTful APIs and backend services Work on the modernisation and refactoring of legacy .NET applications Collaborate with product managers, business analysts and QA to deliver high-quality features Write clean, testable and maintainable code following best ...

Responsibilities Maintain, troubleshoot, and optimize a 10-year-old .NET and SQL Server codebase to ensure 99.9% uptime for remote monitoring services. Lead the refactoring and gradual replacement of monolithic modules into modern microservices using .NET 6+, MongoDB, and Domain Driven Design (DDD). Develop and migrate user interfaces ...

appreciation for simple, maintainable design Experience in the financial industry is a plus Experience working with Third-party APIs is a plus Experience in refactoring and improving code performance and design is a plus Experience with Unit Testing is a plus Current tech stack C# .NET MVC Entity Framework (Code ...

will join our team to help us deliver high quality code for new and existing projects. Your main focus will be the development and refactoring of backend-services using C# .NET (full framework, .NET6) and supporting application delivery to multiple environments. The main responsibilities of the position include: Full stack ...

backend services using modern .NET Developing and scaling cloud-native solutions on Microsoft Azure Working with large, data-heavy systems using SQL Improving and refactoring existing systems to support future platform growth Writing high-quality, well-tested, production-ready code Collaborating closely with Product and Engineering peers on delivery ...

Experience building and maintaining highly scalable, high-performance systems. Solid knowledge of web development (HTML, JavaScript, CSS) and database design. Familiarity with design patterns, refactoring, and OO design principles. Proactive and detail-oriented, with strong analytical and problem-solving skills. Excellent communication and teamwork abilities. For any additional questions, please ...

tests Experience implementing QA tests within a Microservices architecture Able to describe differences and identify candidates for Unit, Integration & E2E tests Experience improving, refactoring, and rewriting tests. Experience ensuring that tests run within CI/CD pipelines We offer a competitive salary and generous benefits package, including: Hybrid-working model ...

Comfort working on production SaaS platforms , with ownership beyond deployment. Experience using AI-assisted development tools (e.g. Cursor or similar) to support code exploration, refactoring, testing, or design discussions—while maintaining strong engineering judgment. A strong sense of ownership and production accountability , including monitoring, debugging, and continuous improvement. Ability ...

systems and processes across a given project(s) or technical domain Analyse, profile and plan work, aligned with project priorities Perform reviews of code, refactoring where necessary Deploy code in a structured, trackable and safe manner Document your data developments and operational procedures Ensure adherence to data/software delivery ...

procedures. Software Engineering & Collaboration Write clean, tested, maintainable code in Python (and optionally .NET). Apply SOLID, TDD/BDD where sensible, code reviews, refactoring, performance profiling. Collaborate in an Agile environment; contribute to technical specs and implementation plans. Build POCs to de-risk architecture and showcase value; harden POCs ...

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 ...

comparable scripting/programming languages. Proven background in systems development, application support, or platform engineering roles. Hands-on experience with application and script migration, refactoring, or modernisation initiatives. Solid understanding of DevOps principles, automation, and deployment workflows. Ability to work effectively in cross-functional technical teams, particularly within infrastructure ...

ensure permanent closure of incidents Engage with development team throughout the life cycle to help develop software for reliability and scale, ensuring minimal refactoring or changes Identify application patterns and analytics in support of better service level objectives Design self-healing and resiliency patterns Design automated software and product upgrades ...

Proven experience working on live production systems ✔️ Full-stack JavaScript/TypeScript (Next.js, Node, APIs, databases) ✔️ Python experience (scripting, services, tooling, data processing) ✔️ Strong refactoring and system-improvement skills ✔️ Comfortable in fast-moving, imperfect environments ✔️ Able to work autonomously with strong judgement on priorities & risk Highly Desirable ⭐ C#/.NET ...

tooling across a huge GCP estate. What You’ll Be Doing: Engineering GCP infrastructure products using Terraform & Terraform Cloud. Designing reusable IaC modules, refactoring legacy configs, improving state management. Building automation, tooling and workflows in Python. Developing secure, scalable GCP landing zones with org policies, policy-as-code (OPA/ ...

SAST, etc.) Optimization: Enhance performance through parallel builds, caching, and dependency prefetching Integrity & Security: Ensure artifact integrity via SHA-mapping and reproducible inputs while refactoring legacy scripts to modern standards. Mentorship: Act as a subject matter expert for engineers on secure pipeline development and supply-chain practices 🎯 Major Requirements ...

SAST, etc.) Optimization: Enhance performance through parallel builds, caching, and dependency prefetching Integrity & Security: Ensure artifact integrity via SHA-mapping and reproducible inputs while refactoring legacy scripts to modern standards. Mentorship: Act as a subject matter expert for engineers on secure pipeline development and supply-chain practices 🎯 Major Requirements ...

SAST, etc.) Optimization: Enhance performance through parallel builds, caching, and dependency prefetching Integrity & Security: Ensure artifact integrity via SHA-mapping and reproducible inputs while refactoring legacy scripts to modern standards. Mentorship: Act as a subject matter expert for engineers on secure pipeline development and supply-chain practices 🎯 Major Requirements ...

maintaining scalable Back End systems Comfortable working with APIs, databases, and distributed systems Strong problem-solving skills and a pragmatic approach to debugging and refactoring Experience working with version control, testing practices, and code reviews Product-minded - able to think beyond the code and understand real user impact Experience working ...

SAST, etc.) Optimization: Enhance performance through parallel builds, caching, and dependency prefetching Integrity & Security: Ensure artifact integrity via SHA-mapping and reproducible inputs while refactoring legacy scripts to modern standards. Mentorship: Act as a subject matter expert for engineers on secure pipeline development and supply-chain practices 🎯 Major Requirements ...

SAST, etc.) Optimization: Enhance performance through parallel builds, caching, and dependency prefetching Integrity & Security: Ensure artifact integrity via SHA-mapping and reproducible inputs while refactoring legacy scripts to modern standards. Mentorship: Act as a subject matter expert for engineers on secure pipeline development and supply-chain practices 🎯 Major Requirements ...

responsible for Building, testing, and maintaining cloud-based ETL pipelines on AWS , ingesting data from APIs, web sources, and internal systems into Snowflake Refactoring and optimising Python and SQL workflows for speed, reliability, and scalability Automating pipelines and maintaining CI/CD, Git-based version control, and deployment standards Improving ...

target-state SAS architecture aligned to AWS. Repoint SAS workloads (ETL, models, analytics, reporting) from Cloudera to AWS. Provide guidance on code compatibility, refactoring, and modernization opportunities. Ensure solutions are secure, scalable, and compliant with banking regulations. Act as the technical authority, collaborating with architects, data engineers, and stakeholders. What ...

driven systems, working closely with C# to enhance and develop backend endpoints. Tackling technical debt by resolving long-standing issues in legacy codebases and refactoring outdated modules. Working across both PHP and C# environments, particularly around backend logic and API development. Implementing and configuring secure authentication flows between internal systems. ...