476 to 500 of 1,296 ECMAScript Jobs in London

fulfil the requirements of the role) PROFILE & KEY SKILLS Essential skills Proficient in e-commerce platforms (Shopify, Magento, WooCommerce, Salesforce Commerce Cloud) An Understanding of Website development: HTML, CSS, JavaScript Solid grasp of SEO best practices Strong data analysis and reporting skills Effective problem-solving and debugging; able to delegate to external dev teams Clear communicator across technical and non More ❯

fulfil the requirements of the role) PROFILE & KEY SKILLS Essential skills Proficient in e-commerce platforms (Shopify, Magento, WooCommerce, Salesforce Commerce Cloud) An Understanding of Website development: HTML, CSS, JavaScript Solid grasp of SEO best practices Strong data analysis and reporting skills Effective problem-solving and debugging; able to delegate to external dev teams Clear communicator across technical and non More ❯

fulfil the requirements of the role) PROFILE & KEY SKILLS Essential skills Proficient in e-commerce platforms (Shopify, Magento, WooCommerce, Salesforce Commerce Cloud) An Understanding of Website development: HTML, CSS, JavaScript Solid grasp of SEO best practices Strong data analysis and reporting skills Effective problem-solving and debugging; able to delegate to external dev teams Clear communicator across technical and non More ❯

hands-on systems engineering Experience programming with at least one modern language such as C++, C#, Java, Python, Golang, PowerShell, Ruby Preferred Qualifications Experience with Ansible (preferred), Powershell or Javascript/Typescript Amazon is an equal opportunities employer. We believe passionately that employing a diverse workforce is central to our success. We make recruiting decisions based on your experience and More ❯

to different audiences Experience working in middleware technology, ideally within API management, IAM or integration Good knowledge of REST, JSON and XML Some scripting experience, ideally with Java or JavaScript/Python Hands-on experience with cloud providers (AWS, Azure, GCP) Ability to design deployment architectures (HA, DR, etc) Understanding of Kubernetes, Docker, CI/CD processes as well as More ❯

cycle. Design and build both Canvas and Model-Driven Power Apps. Configure and customise Dynamics 365, SharePoint Online, and Power Pages, including the use of plugins, custom workflow assemblies, JavaScript, and extended Azure/Office 365 capabilities. Work with Microsoft Power BI to support reporting and data visualisation requirements. Maintain an awareness of the broader Microsoft solutions suite and how More ❯

lifecycle. Design and build both Canvas and Model-Driven Power Apps. Configure and customise Dynamics 365, SharePoint Online, and Power Pages, including the use of plugins, custom workflow assemblies, JavaScript, and extended Azure/Office 365 capabilities. Work with Microsoft Power BI to support reporting and data visualisation requirements. Maintain an awareness of the broader Microsoft solutions suite and how More ❯

Done Drive a culture of writing automated tests for every new feature and bug fix Advocate for and demonstrate TDD practices in daily development work Frontend Focus (React) Strong JavaScript foundations (ES6+, async/await, closures, event loop, modules) Proficient with React hooks, composition, controlled components, and context; avoid common anti-patterns Sensible state management (i.e Redux, context) and data More ❯

Node.js/TypeScript Developer (Backend-Focused) 💰 £60,000 - £90,000 | 🏠 Hybrid (4 days remote) | 📍 London We’re supporting a purpose-driven tech company operating at the intersection of data, software, and healthcare, a business using technology to drive better health More ❯

Node.js/TypeScript Developer (Backend-Focused) 💰 £60,000 - £90,000 | 🏠 Hybrid (4 days remote) | 📍 London We’re supporting a purpose-driven tech company operating at the intersection of data, software, and healthcare, a business using technology to drive better health More ❯

contract role - 3 months initial We're looking for a skilled contract Software Engineer with Security Clearance working Inside Ir35. London based - 2/3 days onsite Essential Skills: Javascript React Typescript Node for application development More ❯

contract role - 3 months initial We're looking for a skilled contract Software Engineer with Security Clearance working Inside Ir35. London based - 2/3 days onsite Essential Skills: Javascript React Typescript Node for application development More ❯

on a contract basis for a 6-month rolling assignment. The role is hybrid, requiring 1 day per week on-site in London. Skills required: AWS development experience TypeScript & JavaScript engineering (react & node) Secure delivery within highly regulated environments Active DV Clearance (essential) Full Stack React/Node Developer – 1 day on-site in London – £600-£700/pd Outside More ❯

on a contract basis for a 6-month rolling assignment. The role is hybrid, requiring 1 day per week on-site in London. Skills required: AWS development experience TypeScript & JavaScript engineering (react & node) Secure delivery within highly regulated environments Active DV Clearance (essential) Full Stack React/Node Developer 1 day on-site in London 600-700/pd Outside More ❯

on a contract basis for a 6-month rolling assignment. The role is hybrid, requiring 1 day per week on-site in London. Skills required: AWS development experience TypeScript & JavaScript engineering (react & node) Secure delivery within highly regulated environments Active DV Clearance (essential) Full Stack React/Node Developer – 1 day on-site in London – £600-£700/pd Outside More ❯

on a contract basis for a 6-month rolling assignment. The role is hybrid, requiring 1 day per week on-site in London. Skills required: AWS development experience TypeScript & JavaScript engineering (react & node) Secure delivery within highly regulated environments Active DV Clearance (essential) Full Stack React/Node Developer 1 day on-site in London 600-700/pd Outside More ❯

functioning as intended. Requirements: Proven experience developing and managing a Vue web app. Strong knowledge of Vue 2 and Nuxt 2 Experience with Vue 3 Vuetify framework experience Strong javascript skills API integration experience Experience with CSS/SCSS Nice to have: Vue 2 to Vue 3 migration experience Familiarity with Python and Django Azure clould platform knowledge Data visualisation More ❯

functioning as intended. Requirements: Proven experience developing and managing a Vue web app. Strong knowledge of Vue 2 and Nuxt 2 Experience with Vue 3 Vuetify framework experience Strong javascript skills API integration experience Experience with CSS/SCSS Nice to have: Vue 2 to Vue 3 migration experience Familiarity with Python and Django Azure clould platform knowledge Data visualisation More ❯

functioning as intended. Requirements: Proven experience developing and managing a Vue web app. Strong knowledge of Vue 2 and Nuxt 2 Experience with Vue 3 Vuetify framework experience Strong javascript skills API integration experience Experience with CSS/SCSS Nice to have: Vue 2 to Vue 3 migration experience Familiarity with Python and Django Azure clould platform knowledge Data visualisation More ❯

functioning as intended. Requirements: Proven experience developing and managing a Vue web app. Strong knowledge of Vue 2 and Nuxt 2 Experience with Vue 3 Vuetify framework experience Strong javascript skills API integration experience Experience with CSS/SCSS Nice to have: Vue 2 to Vue 3 migration experience Familiarity with Python and Django Azure clould platform knowledge Data visualisation More ❯

the clean energy transition while collaborating with talented engineers, data scientists, and product designers. Key Requirements: 5+ years of experience building production-grade backend systems. Strong proficiency in Node.js, JavaScript/TypeScript. Solid understanding of distributed or event-driven systems. Experience with cloud platforms, AWS ideally. If you’re a Senior Software Engineer (Node), looking to work in an early More ❯

the clean energy transition while collaborating with talented engineers, data scientists, and product designers. Key Requirements: 5+ years of experience building production-grade backend systems. Strong proficiency in Node.js, JavaScript/TypeScript. Solid understanding of distributed or event-driven systems. Experience with cloud platforms, AWS ideally. If you’re a Senior Software Engineer (Node), looking to work in an early More ❯

enhancements Drive performance tuning and solve low-level technical bottlenecks Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: Strong proficiency in core Java Exposure to JavaScript/TypeScript & HTML5 is a plus Deep understanding of data structures, algorithms, and performance optimization Familiar with modern SDLC tools and CI/CD workflows Competitive compensation package and a More ❯

enhancements Drive performance tuning and solve low-level technical bottlenecks Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: Strong proficiency in core Java Exposure to JavaScript/TypeScript & HTML5 is a plus Deep understanding of data structures, algorithms, and performance optimization Familiar with modern SDLC tools and CI/CD workflows Competitive compensation package and a More ❯

enhancements Drive performance tuning and solve low-level technical bottlenecks Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: Strong proficiency in core Java Exposure to JavaScript/TypeScript & HTML5 is a plus Deep understanding of data structures, algorithms, and performance optimization Familiar with modern SDLC tools and CI/CD workflows Competitive compensation package and a More ❯