101 to 125 of 149 Clean Code Jobs in London

technical solutions with business goals. Refining the team processes to continuously integrate and working towards a continuously deliverable application. Championing best practices to develop clean, resilient code that performs at serious scale. Coaching and providing feedback to fellow developers. What you'll bring Strong software engineering skills with ...

cloud services/storage (e.g., S3). ● Highly proficient in Java and Python (production experience required). ● Strong software engineering fundamentals: clean, maintainable code; pragmatic testing; effective code review. ● Comfort mentoring/pairing with engineers to up-skill the team ...

services and responsive user experiences using React, NextJS and NodeJS. What You'll Do Build and maintain scalable, secure applications, modern architectural patterns Write clean, test-driven code with a focus on performance and usability Collaborate across teams to deliver iterative improvements Lead on innovation and continuous delivery … What We're Looking For Proven experience working with React Strong understanding of microservices, CI/CD, and DevOps practices Confident writing performant frontend code Agile mindset with excellent communication skills Enthusiastic about solving problems and sharing knowledge INDLON 49904NB Portfolio Payroll Ltd is acting as an Employment Agency ...

services and responsive user experiences using React, NextJS and NodeJS. What You'll Do Build and maintain scalable, secure applications, modern architectural patterns Write clean, test-driven code with a focus on performance and usability Collaborate across teams to deliver iterative improvements Lead on innovation and continuous delivery … What We're Looking For Proven experience working with React Strong understanding of microservices, CI/CD, and DevOps practices Confident writing performant frontend code Agile mindset with excellent communication skills Enthusiastic about solving problems and sharing knowledge INDLON 49904NB Portfolio Payroll Ltd is acting as an Employment Agency ...

Java 21, Kafka, Postgres, Docker, Terraform Frontend: SolidJS, TypeScript Infra: AWS (Serverless & Containers), Confluent AI Ops: Heavy daily use of AI Coding Assistant (Claude Code) Who You Are Keep current with tech advancements and think forward Flow state is in architecture, managing agents, code quality - not just writing … code Proactively automate workflows and hate manual work AI can solve Thrive in early-stage environments, driven by impact Eager to learn, aware of blind spots, build great team camaraderie Must-Haves Polyglot mindset - read and review Java 21 (Node, Python, Go experience welcome) Frontend experience in SolidJS preferred ...

applications. You will work closely with designers and back-end developers to create seamless user experiences using modern front-end technologies. You will write clean, maintainable code and ensure optimal performance across all devices. Key responsibilities: - Develop new user-facing features using React, Vue, or Angular - Build reusable … code and libraries for future use - Ensure the technical feasibility of UI/UX designs - Optimise applications for maximum speed and scalability - Collaborate with back-end developers and web designers - Implement responsive design principles - Conduct code reviews and mentor junior developers - Stay up-to-date with emerging front ...

modern fintech platform, working across: Backend: Node.js (API development & scalable services) Frontend: React Native (iOS & Android apps) Database: MongoDB CI/CD, Git, and clean coding best practices You’ll collaborate closely with Product, Marketing, and Operations to ship new features, resolve customer issues, and continuously improve performance … code quality. ✅ What They’re Looking For 3–5 years’ software engineering experience Strong Node.js backend expertise Proven experience building & deploying React Native apps Solid MongoDB knowledge Detail-oriented, proactive problem-solver Comfortable in a fast-paced, agile environment If you enjoy writing clean, maintainable code ...

into responsive, accessible and high‐performance user interfaces. Collaborate strategically with backend engineers, product owners and designers to deliver end‐to‐end solutions. Write clean, tested, maintainable code and set best‐practice standards for the front‐end. Optimize web performance, accessibility (WCAG), responsiveness, and the user experience. Participate … version control ( Git ), modern build tools and an eye for performance optimisation. Strong understanding of scalable front‐end architecture, responsive design, accessibility standards and code maintainability. Nice to Have Experience with server‐side rendering or static site generation (Next.js). Exposure to AI/ML integrations or advanced analytics ...

Knowledge of payment gateways, ISO 20022, or SWIFT formats. • Collaborative, fast-paced, and engineering-driven culture. • Emphasis on engineering autonomy, architectural decision-making, and clean code. Collaborative, fast-paced, and engineering-driven culture. Emphasis on engineering autonomy, architectural decision-making, and clean code. Join Our Global Team ...

architecture improvements and scalability planning. Responsibilities Own & Evolve Backend Systems: Maintain and improve our Ruby on Rails applications supporting operational workflows. Technical Quality: Write clean, well-tested code and uphold strong security and data integrity standards. Integrations: Manage third-party integrations, ensuring reliable and secure data exchange. Infrastructure ...

maintaining RESTful endpoints Support database design and optimisation (e.g. PostgreSQL, MongoDB) Collaborate with front-end and product teams to deliver full-stack features Write clean, testable, and maintainable code Help improve system performance, scalability, and security Participate in code reviews and learn from senior engineers Stay curious ...

production deployment. --- 2. Core Responsibilities Area Activities Back-End Development • Design and implement RESTful APIs using ASP.NET Core (≥ 6.0). or Nancy • Write clean, testable C# code • Manage data persistence (EF Core, Dapper, or similar). • Implement authentication/authorization (e.g., Azure AD, JWT). · Python knowledge … versioned artefacts. • Configure automated unit, integration, and UI tests. • Set up CD pipelines for staging & production (Teamcity). Collaboration • Contribute to architectural discussions and code reviews. • Document APIs (Open/Swagger), deployment steps, and run-books. • Mentor junior team members on .NET/React best practices. --- 3. What ...

platform and offer unique technical challenges. What You'll Do Design and build backend services and APIs that power our platform Write clean, well-tested Go code following established patterns and best practices Collaborate with frontend engineers, product managers, and designers to deliver features Participate in code … experience highly valued Experience with micro-services architecture and distributed systems Familiarity with containerisation (Docker) and orchestration (Kubernetes) Strong testing practices and commitment to code quality Excellent communication and collaboration skills Self-driven with ability to work independently and as part of a team Highly Desirable Experience with Temporal ...

company’s position as an industry leader. Core Responsibilities Work closely with the team to implement complex backend logic and platform solutions. Write clean, scalable, and maintainable code, adhering to industry best practices. Stay updated on the latest Java frameworks, libraries, and development techniques. Translate business needs into ...

Lead the full software development lifecycle end-to-end—shaping concepts, building solutions, and driving high-quality releases that land smoothly into production. Write clean, secure, well-structured code that’s built for longevity, complete with thoughtful documentation and rigorous testing. Own and elevate the documentation process, creating … arise. Maintain and strengthen our infrastructure to ensure systems remain resilient, scalable, and consistently high-performing. Turn technical designs into elegant, efficient, and reliable code that meets both industry best practice and internal engineering standards. Champion engineering excellence—upholding Vitality’s standards while driving continuous improvement across tools, processes ...

improvement. Key Responsibilities Salesforce Development Design and deliver scalable, high-performance Salesforce solutions. Build and configure functionality across Service Cloud and Marketing Cloud. Write clean Apex code and use declarative tools to meet business needs. Complete unit testing, documentation, and support system testing. Collaboration & Stakeholder Engagement Work with ...

clients to understand business needs and translate them into functional, intelligent applications . Integrate solutions with Azure AI Services and other Microsoft technologies. Write clean, scalable code using Power FX, JavaScript/TypeScript, C#, Python , or other relevant languages: JavaScript/TypeScript for custom client-side logic, especially ...

data requirements and optimise query performance and cost Contribute to data-visualisation strategy through intuitive dashboards and exploration tools Take full ownership of your code from development to production, helping improve processes and fostering a collaborative engineering culture Partner with engineers across teams to support shared application goals Qualifications … like Databricks, Kinesis, or large-scale ETL pipelines Experience working in AWS environments, including services like DynamoDB and Lambda Preferred Skills Care deeply about clean, maintainable, well-tested code Enjoy solving problems through discussion and collaboration Have strong opinions on effective API design and data structure—while remaining ...

residential property businesses London HQ About the Role Architect, design, and build scalable backend systems and APIs using Python. Write, review, and maintain clean, testable code. Contribute to technical strategy, architecture decisions, and code reviews. Mentor junior engineers and foster a high-performing team culture. Collaborate with Product ...

proceed, you must be able to share links to live apps on the Apple App Store (and/or Google Play) that demonstrate clean, minimal design and polished user experience. If you cannot provide shipped app links, please do not apply. About the role We’re hiring a full …/UX implementation skills (spacing, typography, layout, interaction) Experience with REST APIs, auth flows, and state management Comfortable delivering apps that feel fast, clean, and well-finished 👉 We’re comfortable with AI-assisted development tools (e.g. Copilot, Base44, etc.) where they improve speed and quality What we’re looking ...

grounding in core data science principles and a growing interest in modern NLP and LLM-based systems. You enjoy working end-to-end, writing clean, production-ready code, and taking ownership of your work. Around 3 years’ experience in a hands-on data science role Strong Python skills ...

background in software engineering, platform, or infrastructure roles Experience working with cloud platforms and modern DevOps practices Solid programming skills with a focus on clean, scalable code Hands-on experience with databases in production environments Exposure to MLOps, ML platforms, or AI-powered systems (not necessarily research-heavy ...

strong record of delivering impactful projects from data exploration through to production deployment. Proficiency in Python and SQL , with strong software engineering fundamentals (clean, modular, well-documented code, testing, and version control with Git). Proven experience designing and building scalable data workflows or data-driven products , including ...

project, transitioning legacy data workflows into a high-performance AWS cloud environment. This is a hands-on technical role focused on converting legacy SAS code into production-ready PySpark pipelines within a complex financial services landscape. Key Responsibilities Code Conversion: Lead the end-to-end migration … code (Base SAS, Macros, DI Studio) to PySpark using automated tools (SAS2PY) and manual refactoring. Pipeline Engineering: Design, build, and troubleshoot complex ETL/ELT workflows and data marts on AWS. Performance Tuning: Optimise Spark workloads for execution efficiency, partitioning, and cost-effectiveness. Quality Assurance: Implement clean coding ...

lead and implement the improvement of algorithms, optimising execution, usability, and package architecture of our ML Verification packages. Note that this is a Python code focused role, rather than a Data Science role, so Python programming skills are the priority, where as Machine Learning and Data Science skills … both product and research teams. As a Safe Intelligence Senior Python Engineer , you will: Play a leadership and mentoring role in Python package and code development including strong modelling of best practice and efficient procedures. Productise a set of Python packages and tools for use in machine learning applications ...