376 to 400 of 421 JavaScript Jobs in the City of London

WordPress/PHP Developer £60,000 - £70,000 Hybrid - 3 days a week, central London (WordPress, PHP, JavaScript,) Would you like the opportunity to work with one of the leading worldwide SaaS organisation, working with WordPress, PHP and JavaScript? The Company A market leading SaaS company with a global presence, with high-end offices in central London You will be … work in the office three times a week with the rest of the team. Requirements: Strong WordPress/PHP experience - any framework (Symfony, Laravel, Zend, etc) Strong knowledge of JavaScript - (React, Vue.JS, Angular, etc) HTML/CSS Understanding of TDD and Gutenberg would be a bonus Experience of working in an agile environment This role requires you to work from … WordPress/PHP developer, this is a unique opportunity to join a market leading company with the added bonus of continuing to grow your skillset in PHP, WordPress and JavaScript, with an outstanding benefits package on offer. More ❯

base and extremely innovative product suite are in need of an experienced Support Engineer (Software & Infrastructure). This will be a hugely impactful role, working with Ruby on rails & JavaScript SaaS applications, AWS cloud environments and Linux-based systems. The new Senior Software Support Engineer will be part of a senior team and focus on identifying software issues across a … broad range of software products, focusing on fixing bugs and the route cause analysis of these issues. If you have a full stack software engineering background (JavaScript and either current or previous Ruby on Rails) and really see the importance of ensuring a positive user experience through maintaining and improving software applications, this could be the Senior Software Support Engineer … Engineering to prevent repeat issues. Build automation to streamline debugging, triage, and regression prevention. Improve system performance, reliability, and developer experience. What You’ll Bring Strong experience with modern JavaScript frameworks , a good understanding of Ruby on Rails code working with SaaS applications. Skilled with SQL databases at scale and comfortable in Linux environments . Proven ability to diagnose and More ❯

paced project environment. You’ll work closely with a cross-functional team to deliver high-quality, scalable web applications using modern technologies. Key skills: Essential: Strong commercial experience with JavaScript , React , and Node.js Proven ability with TypeScript and modern front-end development practices Experience integrating APIs and building performant, responsive interfaces Familiarity with modern tooling and CI/CD pipelines … month initial contract with potential for extension Up to £550 per day, Outside IR35 Hybrid working: 2 days onsite in London If you have strong commercial experience in JavaScript, React, and Node, and are available for your next contract, we’d love to hear from you. More ❯

paced project environment. You’ll work closely with a cross-functional team to deliver high-quality, scalable web applications using modern technologies. Key skills: Essential: Strong commercial experience with JavaScript , React , and Node.js Proven ability with TypeScript and modern front-end development practices Experience integrating APIs and building performant, responsive interfaces Familiarity with modern tooling and CI/CD pipelines … month initial contract with potential for extension Up to £550 per day, Outside IR35 Hybrid working: 2 days onsite in London If you have strong commercial experience in JavaScript, React, and Node, and are available for your next contract, we’d love to hear from you. More ❯

Graduate Software Engineer - JavaScript/React/Node | £40–50K | Camden (Hybrid) Join a VC-backed AI SaaS startup that's helping chemical and cosmetics companies launch products globally - solving complex regulatory problems through software. They've raised £3M seed, hit £500K+ in revenue, and are building an all-star team of devs from top UK universities. You’ll work … you: Have a 1st class degree from Imperial, UCL, Cambridge, Oxford, Durham, Bath, etc. Have a passion for building (show us your GitHub or side projects!) Are confident with JavaScript, React, Next.js, Tailwind, Node.js Care about clean code, thoughtful UX, and solving problems end to end Are London-based and up for 3 days/week in our Camden office More ❯

Graduate Software Engineer - JavaScript/React/Node | £40–50K | Camden (Hybrid) Join a VC-backed AI SaaS startup that's helping chemical and cosmetics companies launch products globally - solving complex regulatory problems through software. They've raised £3M seed, hit £500K+ in revenue, and are building an all-star team of devs from top UK universities. You’ll work … you: Have a 1st class degree from Imperial, UCL, Cambridge, Oxford, Durham, Bath, etc. Have a passion for building (show us your GitHub or side projects!) Are confident with JavaScript, React, Next.js, Tailwind, Node.js Care about clean code, thoughtful UX, and solving problems end to end Are London-based and up for 3 days/week in our Camden office More ❯

global customer base and extremely innovative product suite are in need of an experienced Software Support Engineer. This will be a hugely impactful role, working with Ruby on rails & JavaScript software applications, AWS cloud environments and Linux-based systems. You will be working with an exciting SaaS platform as part of a talented team of Software Engineers & Architects. NearTech have … across our entire system — backend, frontend, and infrastructure — to fix friction points, enhance usability, and make our platform bulletproof. If you’re a full-stack engineer (Ruby on Rails, JavaScript, AWS) who enjoys solving complex issues, improving processes, and making large systems feel effortless to users, you’ll thrive here. What You’ll Do Own product stability end-to-end … repeat issues. Build automation to streamline debugging, triage, and regression prevention. Improve system performance, reliability, and developer experience. What You’ll Bring Strong experience with Ruby on Rails , modern JavaScript , and AWS . Skilled with SQL databases at scale and comfortable in Linux environments . Proven ability to diagnose and fix complex production issues in large systems. A product mindset More ❯

global customer base and extremely innovative product suite are in need of an experienced Software Support Engineer. This will be a hugely impactful role, working with Ruby on rails & JavaScript software applications, AWS cloud environments and Linux-based systems. You will be working with an exciting SaaS platform as part of a talented team of Software Engineers & Architects. NearTech have … across our entire system — backend, frontend, and infrastructure — to fix friction points, enhance usability, and make our platform bulletproof. If you’re a full-stack engineer (Ruby on Rails, JavaScript, AWS) who enjoys solving complex issues, improving processes, and making large systems feel effortless to users, you’ll thrive here. What You’ll Do Own product stability end-to-end … repeat issues. Build automation to streamline debugging, triage, and regression prevention. Improve system performance, reliability, and developer experience. What You’ll Bring Strong experience with Ruby on Rails , modern JavaScript , and AWS . Skilled with SQL databases at scale and comfortable in Linux environments . Proven ability to diagnose and fix complex production issues in large systems. A product mindset More ❯

contributes to open-source software (OSS). The ideal candidate will be a Software engineer or technical manager (hands-on or architecture exposure) and proficiency in modern programming (Python, JavaScript, Go, Java, etc and a solid understanding of CI/CD pipelines, DevSecOps workflows, and automated policy enforcement tools (e.g., Snyk, GitHub Actions, Jenkins, Sonatype, etc.). Knowledge of software … terms into enforceable technical and legal policies. Managing obligations that can lead to OSS license violations or forced code disclosure. Experience Needed Solid software engineering or technical management (Python, JavaScript, Go, or similar). Good understanding of software licensing, compliance, and IP principles. Experienced with legal, risk, and engineering teams in complex or regulated environments. Hands-on knowledge of CI More ❯

developer resources such as APIs, SDKs, and technical documentation. Strong experience across Integrations, Full Stack Web Development, and Cloud Architecture Proficiency with one or more of the following technologies: JavaScript, NodeJS, Python (or equivalent modern frameworks/languages). Outstanding interpersonal and communication skills, with the ability to convey technical concepts clearly to a range of audiences. Highly organised with …/Technical Integration Lead/API Integration Manager/SaaS Integration Engineer/Full Stack Developer/Solutions Architect/Cloud Engineer/Platform Integrations Lead/NodeJS/JavaScript/Python/API/Cloud Architecture/Swagger/Computer Science/Software Engineering/Integration Architect/API Solutions Lead/Technical Project Manager/SaaS Platform Engineer More ❯

LEAD FULL STACK DEVELOPER (Front-End Focus) REMOTE CONTRACT Ardent Blue Technologies is a software development and staff augmentation company doing business since 2011. We have secured well recognized Fortune 500 clients in a number of domains including game development More ❯

Company Profile nLighten is a European platform of distributed edge data centers, designed to meet the growing demand for AI, 5G, and hybrid cloud deployments. As a rapidly expanding provider, we offer scalable colocation hubs and best-in-class energy More ❯

Company Profile nLighten is a European platform of distributed edge data centers, designed to meet the growing demand for AI, 5G, and hybrid cloud deployments. As a rapidly expanding provider, we offer scalable colocation hubs and best-in-class energy More ❯

QA Engineer 🧑💻 | C# | JavaScript | Playwright | FinTech | £95,000💷 My client is seeking a QA Engineer to work across the front, middle and back office. This role is seeking candidates who have exposure to the below skill set and come from a financial background. Location - London📍 Salary - £95,000 💷 Hybrid Working - 3 days per week onsite 🏢 Strong proficiency in C# and More ❯

QA Engineer 🧑💻 | C# | JavaScript | Playwright | FinTech | £95,000💷 My client is seeking a QA Engineer to work across the front, middle and back office. This role is seeking candidates who have exposure to the below skill set and come from a financial background. Location - London📍 Salary - £95,000 💷 Hybrid Working - 3 days per week onsite 🏢 Strong proficiency in C# and More ❯

and are looking to scale out their engineering team. Role And Responsibilities You will be joining a forward thinking and collaborative team in developing online platforms using Typescript, NodeJS, Javascript and React. Job Requirements 6+ years commercial development experience Strong Typescript and Javascript skills Good communication skills More ❯

and are looking to scale out their engineering team. Role And Responsibilities You will be joining a forward thinking and collaborative team in developing online platforms using Typescript, NodeJS, Javascript and React. Job Requirements 6+ years commercial development experience Strong Typescript and Javascript skills Good communication skills More ❯

business stakeholders to align technology decisions with strategic goals. Experience: 3–6 years of hands-on coding experience with a strong foundation in software development and system architecture (PHP, JavaScript, WordPress). Proven experience leading technical teams or having transitioned into a managerial or strategic role. Skilled in WordPress platform/hosting, HTML, CSS, JavaScript, PHP, Vue, and MySQL. Experience More ❯

business stakeholders to align technology decisions with strategic goals. Experience: 3–6 years of hands-on coding experience with a strong foundation in software development and system architecture (PHP, JavaScript, WordPress). Proven experience leading technical teams or having transitioned into a managerial or strategic role. Skilled in WordPress platform/hosting, HTML, CSS, JavaScript, PHP, Vue, and MySQL. Experience More ❯

someone who can join in the process of growing their brand, with exciting projects due over the next year or so. You will have an in-depth understanding of JavaScript and Node.js/React and have experience of coaching or mentoring teams in the past. As a Tech Lead, you will be managing 2 Engineers, while remaining hands-on. Essential … skills for a Tech Lead Fullstack JavaScript and Node.js development experience. Hands on experience of developing REST web services and API's. Knowledge and experience of deploying to cloud services, preferably AWS. Experience of Unit testing, TDD, BDD and Test Automation. Experince of working with GraphQL. Past experience as a Tech Lead. If you're Tech Lead, looking to work More ❯

Frontend Software Developer London (Remote) | £30,000–£45,000 + shares & bonus Tech: JavaScript, React, TypeScript, Next.js, HTML, CSS We’re partnered with a leading SaaS company in the HR technology space, looking for a junior to mid-level frontend developer to join their growing team. You’ll work on modern, responsive web applications, using React and the latest frontend … user experiences Write clean, maintainable React code and contribute to continuous improvement What we’re looking for: Some commercial frontend experience, ideally with React and TypeScript Solid knowledge of JavaScript, HTML5, and CSS3 Benefits: Remote working Share options and performance bonuses More ❯

client of Opus, who is a profitable, investment-backed SaaS company with serious growth plans! We’re hiring Backend-focused Ruby Developers or Full Stack Ruby Developers with modern JavaScript experience (React, Vue, etc.) to join their tech team in London. This is a rare opportunity to be part of a company that’s not only profitable but also growing … days/week in their London office (flexible based on team needs). What You’ll Bring: Strong experience with Ruby (Rails or other frameworks). Exposure to modern JavaScript (React, Vue, or similar). Passion for clean code, scalable systems, and collaborative development. Mentoring junior and mid-level developers More ❯

Industries Cloud (Public Sector Solutions) Build and maintain OmniStudio components : OmniScripts, FlexCards, Integration Procedures Implement Salesforce Flows (screen, triggered, API) Develop custom Apex classes , Lightning Web Components (LWC) , and JavaScript Use Git for version control and support CI/CD pipelines Collaborate via Jira , Confluence , and Agile ceremonies Ensure solutions are scalable, maintainable, and aligned with best practices Act as … Required Skills & Experience 5+ years Salesforce development experience, ideally in Salesforce Industries Cloud OmniStudio (OmniScripts, FlexCards, Integration Procedures) Apex (triggers, batch jobs, web services) Lightning Web Components (LWC) and JavaScript Salesforce Flows and Data Mappers Familiarity with integration tools (Mulesoft, APIGEE, Connected Apps) Understanding of Apex sharing/security model Experience with automated testing tools (Provar, Selenium) – desirable Agile team More ❯

translate stakeholder goals into functional and technical requirements , ensuring clarity between business need and technical delivery. Design and develop intelligent, adaptive web platforms leveraging modern frameworks (React, TypeScript/JavaScript, CSS, AWS Amplify, GraphQL). Apply AI-assisted tooling and automation throughout the development lifecycle — from code generation and testing to deployment and optimisation. Lead innovation by evaluating and integrating … in accessibility, privacy, and performance while maintaining clean, modern, and secure codebases. What You’ll Bring Strong background in front-end and full-stack development using React, TypeScript/JavaScript, and modern cloud environments (AWS, GCP, or similar). Experience working with headless CMS platforms such as Storyblok, and strong understanding of API design (REST/GraphQL). Proven ability More ❯

translate stakeholder goals into functional and technical requirements , ensuring clarity between business need and technical delivery. Design and develop intelligent, adaptive web platforms leveraging modern frameworks (React, TypeScript/JavaScript, CSS, AWS Amplify, GraphQL). Apply AI-assisted tooling and automation throughout the development lifecycle — from code generation and testing to deployment and optimisation. Lead innovation by evaluating and integrating … in accessibility, privacy, and performance while maintaining clean, modern, and secure codebases. What You’ll Bring Strong background in front-end and full-stack development using React, TypeScript/JavaScript, and modern cloud environments (AWS, GCP, or similar). Experience working with headless CMS platforms such as Storyblok, and strong understanding of API design (REST/GraphQL). Proven ability More ❯