16 of 16 Clean Code Jobs in the City of London

passionate about building scalable, high-quality data systems. This is an opportunity to work on globally impactful products in a modern cloud environment, alongside a collaborative team that values clean code, continuous learning, and strong engineering principles. What You'll Be Doing You'll be a key contributor to the development of a next-generation data platform, with … development of a lakehouse architecture using Apache Iceberg Collaborating with product and business teams to deliver data-driven solutions Embedding observability and quality checks into data workflows Participating in code reviews, pair programming, and architectural discussions Gaining domain knowledge in financial data and sharing insights with the team What They're Looking For Core Requirements Proficiency in Python, with … a focus on clean, maintainable code (bonus for experience with type hints, linters, and testing frameworks like pytest) Solid understanding of data engineering fundamentals: ETL/ELT, schema evolution, batch processing Experience or strong interest in Apache Spark for distributed data processing Familiarity with AWS data tools (e.g., S3, Glue, Lambda, EMR) Strong communication skills and a collaborative More ❯

in AWS services, e.g. EC2, S3, RDS, DynamoDB, Redshift, Lambda, API Gateway Solid foundation in software engineering principles, including version control (Git), testing, CI/CD, modular design, and clean code practices. Experience developing reusable components and APIs is a strong plus. Advanced SQL skills for complex data queries and transformations Proficiency in at least one programming language More ❯

models into production applications using APIs or custom implementations Collaborate with data scientists to implement AI solutions (e.g., NLP, computer vision, predictive analytics) Optimize application performance and scalability Write clean, maintainable, and testable code Participate in code reviews and provide constructive feedback Maintain documentation for AI integration and software solutions Stay up-to-date with emerging technologies More ❯

models into production applications using APIs or custom implementations Collaborate with data scientists to implement AI solutions (e.g., NLP, computer vision, predictive analytics) Optimize application performance and scalability Write clean, maintainable, and testable code Participate in code reviews and provide constructive feedback Maintain documentation for AI integration and software solutions Stay up-to-date with emerging technologies More ❯

architecture, mentor peers, and lead by example in a modern engineering culture that embraces AI-assisted development tools like GitHub Copilot etc. 💻 What You'll Do Design and implement clean, testable, maintainable software across the stack Lead the evolution of scalable front-end architectures — think design systems , component libraries , and microfrontends Champion best practices in CI/CD, automated … skills in Node.js , Python , or Go a plus) Comfortable designing and contributing to design systems and component libraries Familiar with microfrontend principles and modular architecture at scale Advocate for clean code, testability, and continuous improvement Open-minded, feedback-driven, and eager to experiment with GenAI development tools 🌍 Why You'll Love It Here Remote-first culture with monthly More ❯

of Internet, Public Cloud and now AI. Your Skills: Experience with Azures native AI stack (including AI Foundry, Search, Cosmos DB, and AKS), strong Python and C# skills, VS Code (ideally with AI tools like Copilot), familiarity with Docker, Kubernetes, and scalable cloud-native architecture, and a track record of working in agile teams using Azure DevOps for CI … first features using Azure AI Foundry, Azure AI Search, Cosmos DB, Docker, and AKS Design and implement scalable architecture with cloud-native tools alongside a collaborative, fast-moving team Code primarily in Python and C# - with bonus points if you can jump into React.js when needed Speed up development using Visual Studio Code with GitHub Copilot (or your … preferred AI coding assistant) Work in a tight feedback loop: branch, commit, pull, test, and ship - all through Azure DevOps Write clean, tested, production-ready code - unit testing is second nature, not an afterthought Participate in focused sprints and daily standups - we work lean, iterate fast, and learn as we go What Youll Bring to the Team: Proven More ❯

You have: · Advanced Python proficiency, especially in scalable, clean code architecture and microservices (e.g., FastAPI, Flask, asyncio) · Solid understanding of API integration patterns and inter-servic communication (e.g. REST, Kafka) · Experience with authentication and authorization mechanisms (e.g. OAuth2, JWT, Azure AD) · At least two ML/AI solutions delivered to production, ideally involving document understanding, NLP or search More ❯

functional squad, delivering new features and capabilities that the business depends on. The backend is built in Go, following a documentation-first approach and a service-oriented architecture. High code quality, automated testing, and seamless deployments through CI/CD pipelines into AWS are core to the way they work. What Youll Be Doing Build & Deliver Write clean, testable, maintainable Go code Break down User Stories into clear, deliverable tasks Drive best practices across testing, code reviews, and refactoring Ensure compliance with coding standards, security, and regulations Collaborate & Influence Partner with product owners, designers, and engineers to turn requirements into technical solutions Contribute ideas that improve systems and processes Shape the Future Support technical roadmaps … you apart. What Youll Bring 5+ years of software development with strongly typed languages (Go, Java, etc.), including 2+ years of commercial Golang experience Strong experience writing well-tested code Proven ability to take a User Story from refinement through to delivery within a sprint Solid background in data modelling and database design (SQL/NoSQL) Knowledge of distributed More ❯

to best practises, including automated test suites and comprehensive documentation. Develop, measure, and monitor key metrics for all tools and services, consistently seeking to iterate and improve. Participate in code reviews to elevate personal standards and contribute to the team's overall product quality. Collaborate with other technical staff and data engineers to build an end-to-end pipeline … equivalent experience. Essential cloud experience (Google Cloud and Cloud Run preferred) for core web application infrastructure. Strong skills in JavaScript/TypeScript and Python, adhering to best practises for clean and scalable code. Ability to work directly with designers using Figma to transform design prototypes into engaging applications. Experience with automated testing tools (e.g., Playwright, Cypress) for maintaining and More ❯

commercial insurance market. Responsibilities Design, build, and deploy machine learning models that meet defined performance and business requirements Develop production-ready data science solutions and maintain high-quality, testable code using modern development practices Build and maintain APIs, data pipelines, and automated workflows to support model deployment, monitoring, and lifecycle management Analyse large and complex datasets, applying statistical and … and recommend iterative improvements Track and report key performance and operational metrics Contribute to best practices in version control, testing, CI/CD, and MLOps Share expertise through peer code reviews, documentation, and collaborative learning initiatives Stay current with emerging trends in AI/ML, particularly in areas such as LLMs, NLP, and intelligent document automation What skills and … learning concepts, algorithms, and evaluation metrics Practical knowledge of LLMs and NLP techniques; experience using frameworks like Hugging Face Transformers or OpenAI APIs Strong Python programming skills to write clean, modular code and experience with core data science libraries Familiarity with software development workflows, including Git, code reviews, and unit testing Comfortable working with both structured and More ❯

commercial insurance market. Responsibilities Design, build, and deploy machine learning models that meet defined performance and business requirements Develop production-ready data science solutions and maintain high-quality, testable code using modern development practices Build and maintain APIs, data pipelines, and automated workflows to support model deployment, monitoring, and lifecycle management Analyse large and complex datasets, applying statistical and … and recommend iterative improvements Track and report key performance and operational metrics Contribute to best practices in version control, testing, CI/CD, and MLOps Share expertise through peer code reviews, documentation, and collaborative learning initiatives Stay current with emerging trends in AI/ML, particularly in areas such as LLMs, NLP, and intelligent document automation What skills and … learning concepts, algorithms, and evaluation metrics Practical knowledge of LLMs and NLP techniques; experience using frameworks like Hugging Face Transformers or OpenAI APIs Strong Python programming skills to write clean, modular code and experience with core data science libraries Familiarity with software development workflows, including Git, code reviews, and unit testing Comfortable working with both structured and More ❯

and Engineering teammates (Software and Data Engineers) within your modelling team. Perform data cleaning, exploratory data analysis (EDA), feature engineering, and model evaluation to support continuous model improvement. Write clean, efficient, well-documented code aligned with team standards for structure, reproducibility, and version control. Work collaboratively with other Data Scientists to propose ideas, troubleshoot modelling challenges, and refine … methodologies. Contribute to the delivery of accurate, reliable forecasts with low latency under evolving client or market demands. Participate in code reviews and collaborative design sessions to uphold technical quality across the team. Provide mentorship and support to Junior Data Scientists working on the same or related projects. Experience and knowledge 2+ years’ experience solving analytics and modelling problems More ❯

best practices, with a focus on scalability and performance. Configure and develop solutions across Salesforce Service Cloud and Experince Cloud Estimate Jira stories accurately and deliver robust, well-tested code in line with agreed timelines. Write clean, efficient Apex code and utilize Salesforce’s declarative tools to meet business needs. Conduct unit testing, document results, and contribute … to system testing cycles. Maintain and enhance CI/CD pipelines using tools such as GitHub, ensuring seamless code deployment and version control. Review and manage the impact of Salesforce seasonal releases, including system updates and regression testing. Essential Skills and Experience Significant hands-on experience as a Salesforce Developer in complex environments. Expertise in Apex, Lightning Web Components More ❯

tools for energy markets Calibrate quantitative models for structured deals, renewables, and batteries Implement risk methodologies for exotic options in NBP and GB power markets Deliver reproducible, well-documented code to support traders and originators Translate commercial needs into robust quantitative solutions Collaborate with trading and origination teams to optimize pricing and forecasting models Qualifications Proficient in Python with … analysis Familiar with energy markets (power, gas, renewables) and UK energy market dynamics Knowledgeable in data structures, databases (SQL/noSQL), and cloud/deployment tools Skilled in writing clean, documented, and reproducible code following best practices Problem-solver with attention to detail and ability to translate business requirements Clear communicator capable of engaging with both technical and More ❯

tools for energy markets Calibrate quantitative models for structured deals, renewables, and batteries Implement risk methodologies for exotic options in NBP and GB power markets Deliver reproducible, well-documented code to support traders and originators Translate commercial needs into robust quantitative solutions Collaborate with trading and origination teams to optimize pricing and forecasting models Qualifications Proficient in Python with … analysis Familiar with energy markets (power, gas, renewables) and UK energy market dynamics Knowledgeable in data structures, databases (SQL/noSQL), and cloud/deployment tools Skilled in writing clean, documented, and reproducible code following best practices Problem-solver with attention to detail and ability to translate business requirements Clear communicator capable of engaging with both technical and More ❯

Frequency Trading (HFT) platforms while contributing directly to the continued growth and success of the business. KEY RESPONSIBILITIES: Design, develop, and maintain high-performance Java applications and components, ensuring code quality, efficiency, and compliance with best practices. Build a thorough understanding of end-to-end risk data flows to support reliable and compliant system operations. Enhance and optimise the … inefficiencies to improve overall system performance. Maintain and extend in-house shared libraries, ensuring their reliability, effectiveness, and long-term stability. Deliver robust, maintainable, well-documented, and automatically tested code in alignment with project goals and timelines. Diagnose and resolve software defects and technical issues to minimise disruption to business-critical and revenue-generating processes. Partner with cross-functional … teams to design, define, and implement new features and enhancements. Contribute to peer code reviews, incorporating feedback to continually raise development standards. Uphold and enforce high standards of internal documentation to support system transparency, knowledge sharing, and long-term maintainability. REQUIRED - SKILLS/EXPERIENCE: Proven experience within traditional financial markets (e.g., spot FX, rates, or equities). Minimum of More ❯