26 to 50 of 109 JavaScript Jobs in the City of London

strong eye for frontend quality - you care about how things look and feel, not just whether they work Comfortable working with HTML, CSS, and JavaScript across a modern Rails frontend stack Familiarity with relational databases (PostgreSQL preferred) and writing efficient queries Comfortable building and consuming APIs as part of delivering ...

implement well-tested new product features. This role isn't just about coding, its about influencing product and business impact Desired Skills & Experience Fullstack JavaScript/TypeScript/Node.js software engineering experience SASS, DynamoDB, AWS Lambda, and Serverless Framework are all beneficial eCommerce/Shopify experience is a bonus ...

payment methods. You’ll own core backend services, influence architecture, and help move millions in daily transactions. Requirements: • 5+ years backend engineering experience. • Strong JavaScript/TypeScript/NodeJS expertise. • Experience with microservices, REST APIs, and event-driven systems. • Solid knowledge of PostgreSQL, Redis, Docker, Kubernetes, and AWS. • Strong focus ...

decisions, and engineering best practices. Write clean, well-tested, and well-documented code. Must‐Have Technical Skills Expert-level Node.js development experience (TypeScript/Javascript). Professional Golang development experience. Strong GraphQL experience, including schemas, resolvers, and high-volume queries. Deep knowledge of PostgreSQL, including performance tuning and relational design. ...

Senior Full Stack Engineer (TypeScript/Node/AWS) £60,000 to £70,000 Fully remote (UK) My client is a product-led software business building a modern customer experience platform for eCommerce brands, focused ...

Contract: Lead Full-Stack JavaScript Developer +Contentful CMS – FTSE100 Investment Manager Day Rate: £685 via Umbrella Engagement Working Arrangement: Remote Our client is a leading UK investment company managing assets on behalf of over 1.8 million investors. Their website is a core part of their digital platform ...

working closely with product and design teams while also contributing to API integrations where needed. They’re looking for someone who: Has strong React, JavaScript and TypeScript experience Has built modern frontend applications or product platforms Is comfortable working with APIs and backend services Enjoys problem-solving and thinking through ...

engineering and ETL processes will be helpful. Any previous experience in a Trading environment and technical exposure with Microsoft Dynamics CRM, Python (intermediate) and JavaScript would be advantageous. Does this sound like your next career move? Apply today! Working with Certain Advantage We go the extra mile to find ...

business scales toward Series A and beyond. Core requirements: 3 plus years of engineering experience Strong in React and comfortable across the full JavaScript and TypeScript stack Backend experience building REST APIs using NestJS or Express Or Python Experience with MongoDB or similar databases Evidence of building independently, for example ...

Maintain clear and detailed documentation of tools, processes, and best practices to support team knowledge and future development. Expertise Proficiency in one of Python, Javascript, Golang or Rust Familiarity with React (or similar frameworks) for creating user-friendly web applications. Expertise in API design, data modeling, and distributed architectures Proficiency ...

other Full Stack Engineers on high-impact projects Technical Requirements Recent graduate or up to 1 year of professional experience Familiarity with JavaScript and Next.js (React or React Native experience is a plus) Basic knowledge of Python Understanding of SQL and relational databases Eagerness to learn cloud services (AWS experience ...

facing set up Should scoped and delivered complex systems in rapid and ambiguous environments Delivered production-grade code across frontend and backend using Python, JavaScript, or similar stacks Understand how AI model behaviour affects product experience Communicate clearly with engineers, product teams, and customer stakeholders Flag risks early and seek ...

code or configuration-driven platforms Basic knowledge of backend services or .NET for integration awareness Familiarity with scripting languages such as Python or JavaScript Experience working in cloud-based environments As part of a leading global Data and AI company, you can look forward to: A competitive salary with ...

enhance AI‐enabled Amazon Connect platforms for a major UK enterprise. You’ll work with: Amazon Connect, Contact Flows, Amazon Lex, Lambda TypeScript/JavaScript/Python CI/CD , serverless, monitoring LLM‐powered features and AWS AI tools You must be: A hands‐on coder (not an architect) Experienced ...

code Qualifications Familiarity using Scrum/Agile development methodologies Experience building data-heavy apps with complex workflows Experience building object oriented web applications in JavaScript, HTML5, and CSS3 ...

well-tested new product features. This role isn't just about coding; it's about influencing product and business impact. Desired Skills & Experience Backend JavaScript/TypeScript/Node.js software engineering experience SASS, DynamoDB, AWS Lambda, and Serverless Framework are all beneficial eCommerce/Shopify experience is a bonus ...

architecture, scalability and product direction What they’re looking for Strong experience as a full-stack engineer with a frontend bias, particularly with modern JavaScript/TypeScript frameworks Comfortable contributing across both frontend and backend services, with experience working with APIs and distributed systems Experience working with backend technologies such ...

little as 3-6 months: Step 1 - Introduction to Development - Complete a selection of professional and industry recognised coding courses covering HTML5, CSS3, Javascript and Python. The training is delivered via multimedia rich video tutorials, presentations and quizzes, through a portal that you study from home. These courses will give ...

standards for real-time experiences. Document workflows and share learnings for future innovation projects. Your Profile Essential skills/knowledge/experience: Proficiency in JavaScript, HTML/CSS, and frameworks like React, Three.js, or similar. Familiarity with creative coding libraries (e.g., p5.js, GSAP). Basic understanding of UX/ ...

+ Bonus + Package Salary: Up to £120,000 + Bonus + Package Location: London (Hybrid Working) Skills: React as a main language (modern JavaScript/TypeScript) This firm is an elite technology company with exceptionally high standards , known for pushing boundaries and previously setting world records in the tech ...

stakeholders 🧠 What we’re looking for • Experience in a Senior Test Analyst role • Strong manual testing background • Automation testing experience (Playwright or similar preferred) • JavaScript application testing experience • Knowledge of modern testing frameworks and best practices • Confident communicator across technical and non-technical teams 🌱 Why consider it? • Growing fintech with ...

commercial development experience • Advanced PHP • Deep WordPress knowledge (core + internals) • Enterprise WooCommerce experience (non-negotiable) • Advanced Custom Fields (ACF) • MySQL • Tailwind CSS • Vanilla JavaScript • Git (professional workflows) • Custom theme & plugin development • Server administration experience • PSP/payment processor experience Working Arrangement • Full-time, in-house role in London ...

technologies relevant to the ServiceNow integration solutions including: Integration Hub, SSO, Web Services, LDAP, JDBC, etc. Experience in scripting on the ServiceNow platform using JavaScript, CSS and Angular JS: Flows, Business Rules, Client Scripts, UI Actions, Widgets and UI Pages Ability to author clear and comprehensive documentation ...

source libraries, integrations, tools, and datasets. What we're looking for An Isaacus DevRel Engineer should: Be fluent in Python and familiar with HTML, JavaScript, and CSS. Be familiar with data science and modern NLP fundamentals, including information retrieval, embeddings, LLMs, and context engineering. Be passionate about data science ...

heart with a deep-seated passion for infrastructure and systems. •You have significant commercial experience with AWS •You are comfortable and proficient with JavaScript (JS) and Python for scripting, automation, and tooling. •You thrive working independently and are eager to take ownership of complex, high-value projects. •You have ...