51 to 75 of 81 Clean Code Jobs in London

solutions Develop and maintain back-end services, APIs, and automation workflows Build and maintain RPA (Robotic Process Automation) solutions to streamline business processes Write clean, well-documented code across Python, JavaScript, and SQL Deploy and manage applications within cloud environments, ensuring reliability and scalability Participate in code reviews, testing, and debugging to maintain high standards of quality Contribute to technical documentation covering architecture, processes, and code Essential Skills and Experience:- Solid proficiency in Python, JavaScript, and SQL Strong understanding of back-end frameworks (e.g. Flask, FastAPI, Node.js or similar) Experience working with cloud platforms (e.g. ...

ensuring it delivers a pixel-perfect, performant, and luxury-aligned experience for customers. You will be a high-performing developer who thrives on clean architecture, elegant code collaborative delivery whilst working as part of an Agile cross-functional team. Skills and Experience * Strong proficiency in Swift … libraries, Compose and modern Android architecture components. * Experience with Kotlin Multiplatform (KMM high desirable) * Experience with RESTful APIs, JSON, and mobile architecture patterns (MVVM, Clean Architecture). * Familiarity with Xcode, Android Studio, GitHub, mobile CI/CD tools, automated testing frameworks and the app store deployment process. * Proven experience ...

working on Building, optimising, and deploying price optimization machine learning ETL/ELT pipelines and data processes. Improving and adapting our data infrastructure and code base as we scale – including collaboration, security, scalability, efficiency, automation and auditability. Interacting with new clients on client pitches, and working with existing clients … will reflect experience. Proficiency in Python (pandas, numpy) Professional experience with Azure cloud services (AWS/GCP acceptable with deeper experience) Strong experience deploying clean, maintainable, production-level code. Basic understanding of DAG (Directed Acyclic Graphs) and their role in pipeline orchestration It would be nice if you could ...

Your work will directly support trading operations across multiple Rates Swap Derivative products and Options products. You will be responsible for developing scalable, performant code that handles large volumes of market data and complex financial calculations. This includes implementing risk metrics, PnL attribution frameworks, and data pipelines that connect … trading systems with downstream consumers. You will participate in architectural decisions, code reviews, and technical design sessions, contributing your expertise to shape the evolution of this automated platform in Rates. Required Qualifications Minimum 5 years of hands-on Python development experience Strong preference for candidates with financial services background ...

Your work will directly support trading operations across multiple Rates Swap Derivative products and Options products. You will be responsible for developing scalable, performant code that handles large volumes of market data and complex financial calculations. This includes implementing risk metrics, PnL attribution frameworks, and data pipelines that connect … trading systems with downstream consumers. You will participate in architectural decisions, code reviews, and technical design sessions, contributing your expertise to shape the evolution of this automated platform in Rates. Required Qualifications Minimum 5 years of hands-on Python development experience Strong preference for candidates with financial services background ...

solutions supporting rates trading activities. Collaborate closely with quantitative analysts, traders, risk managers, product managers, and other technology teams. Develop scalable, high-performance Python code to process large volumes of market data and perform complex financial calculations. Implement risk metrics, P&L attribution frameworks, and data pipelines connecting trading … systems to downstream consumers. Participate in architectural decisions, code reviews, and technical design sessions to shape platform evolution across Rates and Equities. Gather requirements from business users and translate business needs into technical solutions; communicate technical constraints in business terms. Maintain and enhance existing and legacy applications when required. ...

solutions supporting rates trading activities. Collaborate closely with quantitative analysts, traders, risk managers, product managers, and other technology teams. Develop scalable, high-performance Python code to process large volumes of market data and perform complex financial calculations. Implement risk metrics, P&L attribution frameworks, and data pipelines connecting trading … systems to downstream consumers. Participate in architectural decisions, code reviews, and technical design sessions to shape platform evolution across Rates and Equities. Gather requirements from business users and translate business needs into technical solutions; communicate technical constraints in business terms. Maintain and enhance existing and legacy applications when required. ...

they do. Were looking for a Mid/Senior Backend Engineer to join a team that keeps frameworks lean and focuses on what matters: clean, maintainable code, shipped fast with TDD, DDD, and continuous integration and delivery. Our stack includes Java 17/21, GCP, Kubernetes, Grafana, Prometheus ...

do. We’re looking for a Mid/Senior Backend Engineer to join a team that keeps frameworks lean and focuses on what matters: clean, maintainable code, shipped fast with TDD, DDD, and continuous integration and delivery. Our stack includes Java 17/21, GCP, Kubernetes, Grafana, Prometheus ...

Principal Engineer, you won't just be writing code—you will be shaping the technical DNA of one of the UK’s leading financial institutions. This is a high-visibility career move where you’ll champion modern engineering practices, steer large-scale system designs, and mentor high-performing teams … balance high-level strategic architecture with hands-on technical leadership. Lead & Deliver: Manage the technical delivery of one or more software engineering teams, safeguarding code quality, scalability, and performance. System Architecture: Convert complex functional and non-functional requirements into elegant, high-performance, and resilient system designs across AWS infrastructure. ...

Power Apps, Power Automate) Developing and integrating services within a wider architecture Ensuring solutions are user-focused, accessible, and aligned to government standards Writing clean, maintainable, and reusable code/configuration Supporting issue investigation, resolution, and continuous improvement Applying secure development practices, including awareness of OWASP principles Collaborating … looking for: Active SC Clearance (essential) Strong experience building solutions using Power Platform in production environments Solid software development background beyond low-code tools Ability to engage with senior stakeholders and non-technical users Experience breaking down requirements, refining work items, and defining acceptance criteria Understanding of clean ...

maintain SAP Hybris (SAP Commerce Cloud) applications Deliver new features and enhancements across the ecommerce platform Troubleshoot, investigate and resolve technical issues Write clean, scalable and maintainable code Platform & Integrations Develop integrations between SAP Hybris and wider business systems Support platform upgrades, releases and continuous improvements Improve application ...

testing new AI frameworks and technologies Ensuring AI systems are developed responsibly, ethically, and with a strong focus on transparency and fairness Writing clean, maintainable, and scalable code Requirements Degree in Computer Science, Artificial Intelligence, Data Science, Mathematics, Engineering, or a related field Strong understanding of machine learning ...

concepts and experience applying them in production settings, using frameworks such as Transformers, PyTorch, or TensorFlow Strong Python skills, with the ability to write clean, modular, production‐grade code, and a solid understanding of data engineering and MLOps principles Ability to lead the end‐to‐end lifecycle ...

Software Engineer (Python | Cloud Automation) London | Hybrid (2 days onsite near Liverpool Street) Are you a software engineer who loves solving infrastructure challenges through code? We're recruiting for a Senior Software Engineer to join a major long-term government technology programme, helping build secure, large-scale customer contact … infrastructure roles, this is a genuinely software engineering-focused position. You'll spend your time building automation frameworks, developing internal tooling, creating Infrastructure as Code solutions, and eliminating manual processes through clean, scalable, production-quality code. What You'll Be Doing Building automation frameworks and tooling using Python ...

Models and agentic systems Identify the right state‐of‐the‐art solutions for the bank’s objectives and manage colleagues to implement them as clean, production‐ready code Communicate findings and recommendations through clear and concise reports and presentations Required qualifications, capabilities and skills Experience leading teams ...

prices so they can make smarter commercial decisions. This is a hands-on engineering leadership role where you're expected to: Still write code (about 60% of your time) Lead architecture and make key technical decisions Manage and develop a team (about 40%) Drive adoption of AI-assisted development … This is not a people-manager-only role - they want someone who can still build core systems. AI-Driven Engineering Mindset Use AI for code generation, testing, refactoring Coach others on safe and effective AI usage Improve productivity via AI tools and workflows Translation: my client wants someone already ...

disk I/O, and network considerations across kdb+ processes. Develop robust and reusable q libraries, utilities, and frameworks with a strong focus on clean, maintainable, 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 sharing. Participate in design reviews, production support, and root cause analysis of complex system issues. Work collaboratively within an Agile or iterative delivery environment, contributing to design, implementation, testing, and release phases. Required Skills & Experience 8+ years of hands ...

like computer science, engineering, maths, physics... and has demonstrated real academic excellence. Has strong engineering fundamentals and a real appetite to learn - can write clean, correct code in a known language, and is genuinely curious about how things work under the hood. Has built things they're proud … frontend in HTMX. All the good practices you’d expect from technical co-founders who’ve done this before (CD, Infrastructure as code, simple but scalable and powerful architecture) We’re a small, tight team with demanding customers so expect to be shipping every day with very little bureaucracy. ...

Engineer - Python, Jinja2, AWS, IaC London | Hybrid (2 days onsite near Liverpool Street) Are you a software engineer who loves solving infrastructure challenges through code? We're recruiting for a Senior Software Engineer to join a major long-term government technology programme, helping build large & secure customer contact … infrastructure roles, this is a genuinely software engineering-focused position. You'll spend your time building automation frameworks, developing internal tooling, creating Infrastructure as Code solutions, and eliminating manual processes through clean, scalable, production-quality code. What You'll Be Doing Building automation frameworks and tooling using Python ...

data-driven applications. Working closely with product managers, UX/UI designers, and other team members to turn business requirements into functional features. Writing clean, maintainable, and efficient code that supports long-term scalability. Requirements Education: A degree in Computer Science or a related STEM field. Experience: Solid ...

total cost of ownership, and create a competitive advantage for Citi. We want to regularly engage with talented individuals who are passionate about producing clean, testable code as part of a high performing team. We have found this to be way more important than experience in the financial ...

will: Lead the design, build, and delivery of scalable, secure software solutions Take ownership of end-to-end feature development across complex services Produce clean, secure, test-driven code using Python and Django Support live services, ensuring performance, resilience, and stability Collaborate closely with BAs, UCD specialists ...

including: Retrieval-Augmented Generation (RAG) Fine-tuning and prompt engineering Agent-based workflows Work with large and complex datasets, both structured and unstructured Write clean, scalable Python code for model development and production use Use tools such as Databricks, MLflow and modern AI platforms to manage the full … Experience with model deployment and MLOps tools (e.g. Databricks, MLflow) Familiarity with version control (Git) and collaborative development practices Awareness of best practices in code quality and reproducibility Communication & Consulting Ability to explain complex technical concepts to non-technical stakeholders Experience working in client-facing or cross-functional teams ...

European markets. Collaborate with product managers to develop business requirements and translate them into technical solutions. Mentor junior engineers, offer technical guidance, and conduct code reviews. Drive architectural decisions and technical strategy for the Regional Expansion Tribe. Contribute to engineering culture through knowledge sharing and best practices. Work with … player. Ability to break down complex projects into incremental milestones delivering customer value. Experience with common design and architectural patterns and passion for writing clean, performant, well‐tested code. Curiosity and drive for continuous learning and improvement. Adherence to and advocacy for best coding practices, continuous delivery, and code ...