251 to 275 of 599 JavaScript Jobs in London

We are a leading name in cyber defence, aiding Governments, Nations and Societies to defend themselves from an ever-evolving world of cybercrime. We are currently looking for an experienced Software Engineer to join our prestigious Government and Law Enforcement more »

My client is a leading Fintech company dedicated to offering digital banking services such as online account management, budgeting tools, mobile banking apps, and digital wallets. They pride themselves on innovation, quality, and excellence in everything they do. Their team more »

Automation space, just launching their flagship idea within the UK. As part of this, they're looking for a founding engineer - fullstack Python/JavaScript to join them on their mission! As a Founding Full-Stack Engineer, you will be at the heart of our journey, taking on real responsibility … in a hybrid setup, combining the best of in-person collaboration in London with the flexibility of remote work. Your expertise in Python and JavaScript will be crucial as you help shape and develop their AI solutions. Key Responsibilities Develop and deploy full-stack applications using Python and JavaScript. Collaborate more »

Frontend developer HTML5/CSS/JavaScript Contract (Inside IR35) The ideal candidate will be responsible for designing, developing, testing, and debugging responsive web and mobile applications for the company. Using JavaScript, HTML, and CSS, this candidate will be able to translate user and business needs into functional frontend design. … 5+ years' experience in frontend development Must have experience specifically working on the UI of financial services Experience building object oriented web applications in JavaScript, HTML5, and CSS3 You must have financial services experience Angular experience will be ideal Archie.odonovan@harringtonstarr.com more »

Developer: Greenfield project that will make a huge difference to B2C consumers Opportunity to work with the latest technologies such as React Native and JavaScript Join and lead a talented team, being part of transforming technology in this exciting B2C environment The successful Engineering Lead must have: Proven experience in … leadership roles within agile environments Expertise in serverless architecture, preferably AWS Lambda, and DevOps practices, including CI/CD pipelines Deep knowledge of Python, JavaScript, and React Native, with a track record of mobile app development across Android and iOS platforms If you are ready for a new challenge and more »

identities, leveraging commercial SBC APIs. Experience working on Secret or Top Secret Government projects. Develop engaging user-facing features utilizing React.js or other contemporary JavaScript frameworks. Create reusable components and Front End libraries to facilitate future development efforts. Ensure optimal performance of components across various platforms. Requirements Proven experience in … APIs. Proficiency in Go, Java, and Python (open to alternative language combinations). Strong command of Front End languages and frameworks, including HTML, CSS, JavaScript, and React.js. Thorough understanding of web standards, responsive design principles, and cross-browser compatibility. This will be a One Stage process via Teams as early more »

Full Stack Developer Requirement for Mid and Senior AWS, Terraform Key Skills: Python, JavaScript, AWS, Next.JS, React, FastAPI, Docker Salary from £50,000 up to £110,000 Hybrid working arrangements Responsibilities: Taking ownership of our application, ensuring it is well-maintained and continuously evolves over time Writing and documenting clean … Requirements: Strong coding skills with a demonstrated proficiency in Python and JavaScript. Experience with frontend ecosystems and tools, including Webpack, server-side components, Javascript testing frameworks, package managers, Next.JS, and ReactJS. Familiarity with web application frameworks and experience in developing scalable backends using Python and its extensive ecosystem, e.g., FastAPI more »

As a Ecommerce Manager at Saint and Sofia, you will play a vital role in ensuring the seamless operation of our online platform. You will be responsible for monitoring the functionality, performance, and efficiency of our website, as well as more »

About the Role Hi, I'm thrilled to introduce HIT Solutions, where we're revolutionizing backend development with cutting-edge JavaScript solutions. As a backend JavaScript developer, you'll be at the forefront of our mission, crafting robust, scalable, and efficient backend systems that power our innovative projects. Join us … in shaping the future of technology while leveraging your expertise in JavaScript to drive impactful solutions and elevate user experiences. Ready to take your career to new heights? Join HIT Solutions and be part of something extraordinary Job Opportunity As a Backend JavaScript Developer at HIT Solutions, you will play more »

PHP, JavaScript, WordPress, Remote) Fully remote (UK) Web Developer - £75,000 - £95,000 p/a Web Developer - would you like the opportunity to work with one of the leading worldwide media organisation, working with WordPress, PHP and JavaScript? The Company A market leading media company with a global presence … with high-end offices in central London You will be joining an established PHP, WordPress/JavaScript team during an exciting period of growth across the company. Requirements: Extensive experince with WordPress Strong understanding of Gutenberg Leading PHP experience - any framework (Symfony, Laravel, Zend, etc) Strong knowledge of JavaScript - (React … 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 »

Developer (NodeJS/Typescript) 🌍 Location: London/Hybrid (Once a week in the office) 🎹 Industry: Music Tech 💰 Salary: £100,000 + Benefits 🛠 Key Skills: JavaScript/TypeScript, NodeJS, AWS serverless This is an exciting opportunity for a Senior Back End Developer skilled in NodeJS/Typescript to join a scaling … a focus on Node.js Solid understanding of Node.js frameworks such as Express.js, Nest.js, Fastify, etc. Advanced experience with cloud platforms, in particular AWS Strong JavaScript experience and proficiency in TypeScript Experience with database systems such as MongoDB, MySQL, PostgreSQL, etc., including database design, querying, and optimization Experience and understanding of more »

guidelines where appropriate. Creation of bespoke designs where appropriate. Design modifications. Development projects Pioneer use of newer technologies – eg HTML5, CSS3, SASS. XML, Jquery, Javascript and HTML forms. Mobile, UI and layouts. API build and web applications, content management processes, social media integration. Key Accountabilities: People & Process Working with the … coding) in CSS (inc. CSS3/SASS) and HTML 5 Ability to debug. Good understanding of Responsive Web Design. Good level of ability with JavaScript/jQuery and other JavaScript based frameworks. Keen interest and basic appreciation of XML, Ajax, PHP, MySQL, Content Management Systems. Good understanding of UX and more »

a valued member of our engineering team, you will contribute to the development of our innovative application using React Native. Working with a modern JavaScript stack, your primary focus will be on coding, testing, and enhancing the functionality of Travelex's and partner applications. In this role, you will collaborate … to communicate the benefits of technical solutions to non-technical project partners effectively. Patience and drive to both learn from and mentor others. Experience: JavaScript, both modern techniques and core concepts Type systems like TypeScript or Flow Deep knowledge of React and the surrounding open-source ecosystem. Git, especially within more »

working on and how their designs may effect customer satisfaction. Mainly working with the client Product Engineering Team you will be: Writing TypeScript/JavaScript to build highly usable websites that you're proud of Integrate complex FE components to work with APIs Promote a true culture of quality amongst … the technology team We are mainly looking for candidates who hold experience in the below technologies: JavaScript/TypeScript (deep understanding) Experience working with JavaScript frameworks (Vue (2-3)/Nuxt currently) HTML/CSS/SCSS Tailwind Front End build tools (Webpack, npm, Vite etc) This role will be more »

with development teams and designers to develop web applications that run on numerous platforms. Using React Native, design and develop user interface components for JavaScript-based online and mobile apps. Troubleshoot issues and improve front-end performance. Write reusable, effective, as well as scalable JavaScript code and create interchangeable front … Understand customer and stakeholder needs to build apps in on time, in budget and to a high standard of quality. Make use of additional JavaScript libraries such as Redux to make asynchronous API calls as well as improve the performance of the websites/mobile apps. Plan the data and … and non-functional testing. Required Technical Skills: Experience in building mobile application with at least 3+ years in ReactNative framework. Firm grasp of the JavaScript and TypeScript and its nuances, including ES6+ syntax. Should be aware of state management framework such as Redux and middleware integration options. Aware of the more »

Test Engineer with an interest in working with an established and renowned digital publication to boost their test automation efforts. If you have strong JavaScript and/or Typescript test automation with Cypress and a familiarity with CICD and relevant tooling please get in touch. Key Requirements: · Test automation experience … with Typescript/JavaScript & Cypress · API testing experience (Postman, Cypress or similar) · CICD and related tooling (CircleCI or similar) Nice to have: · Performance testing and relevant tooling (Blazemeter, Jmeter, Gatling) · Mobile App Testing Compensation: This role is offering £75k + benefits and hybrid working How to apply: Please apply through more »

technologies in a holistic sense. The ideal candidate will possess expert-level proficiency in crafting highly performant and scalable front end frameworks, leveraging React, JavaScript, and TypeScript. We are not merely seeking run-of-the-mill React developers; rather, we require individuals who can architect and engineer sophisticated solutions to … critical platform. Responsibilities: Front End Framework Development: Lead the design and implementation of advanced front end frameworks, ensuring optimal performance and extendability. Utilize React, JavaScript, and TypeScript to develop robust and flexible solutions that meet the platform's evolving needs. Rapid Deployment and Enhancement: Demonstrate a proactive attitude and strong … real-time communication. Requirements: Expertise: A minimum of 10 years of hands-on experience in Front End development, with a deep understanding of React, JavaScript, and TypeScript. Technical Proficiency: Demonstrable expertise in crafting performant and scalable front end architectures, showcasing an advanced understanding of key technologies and best practices. Collaboration more »

Senior Ruby Developer - Up to £95k - Hybrid Tech Stack: Ruby on Rails, JavaScript, React, TDD Salary: Up to 95k Location: Central London Office Industry: Software Development House Smooth Interview Process !! The Company 🚀 An exciting software development house based in the heart of London are looking for a Senior Ruby Developer … successful candidate will be expected to be client facing right from the offset, which further enhances the individuals development. Desired Skills ⚙️ Ruby on Rails JavaScript React TDD If this Senior Ruby Developer role sounds of interest, please get in touch, actively interviewing!! Senior Ruby Developer - Up to £95k - Hybrid more »

the destination sector. For this hire, we are looking for a creative developer who can build digital experiences and has worked with the modern JavaScript tech stack. With a focus on the front end, you’ll be working closely with the designers and clients themselves to help produce the best … the team. To be successful in this role you’ll need: Prior agency experience A strong appreciation for design Proficient in HTML, CSS and JavaScript Experience with VueJS Familiarity with headless CMS This company is a tight-knit team that combines forces well in a cross-functional environment. The team more »

As an User Experience Designer you will: Use different techniques to identify and understand users and their needs, so that you can translate user stories and propose user-focused, evidence-based design approaches to meet these needs. Design accessible and more »

back-end developers to create responsive, high-performance web pages, writing clean, maintainable, and well-documented code. Your expertise in SCSS, HTML, and Vanilla JavaScript will be essential for implementing and optimising web designs. You'll customise Shopify functionalities using Liquid templates and scripts, ensuring cross-browser compatibility and optimisation … with the latest industry trends and technologies. ESSENTIAL SKILLS: Proven experience as a Front-End Developer, with a portfolio showcasing Shopify projects. Proficient in JavaScript, SCSS, Liquid, and HTML Strong understanding of Shopify’s platform Experience with responsive and adaptive design principles. Familiarity with version control systems TO BE CONSIDERED more »

in industry-standard clinical database applications, such as Electronic Data Capture (EDC) and Clinical Trial Management Systems (CTMS). Experience with programming languages like JavaScript or SQL is a strong plus. Company: CYTE is a full-service cardiovascular contract research organisation (CRO) powered by an integrated Clinical Research Platform and … projects Participate in meetings with vendors and study Sponsors. Desired Skills and Experience: Life Science Degree, Nursing qualification, or relevant industry experience Experience of Javascript or SQL Experience with power BI is desirable Excellent attention to detail and ability to apply critical thinking in analysis of data. Excellent written and more »

and agile environment where you can broaden your responsibilities. To be considered you will need: Strong hands-on technical experience in Apex, HTML, CSS, JavaScript and Lightning Web Components Excellent Salesforce consulting skills with experience across the full project/delivery lifecycle Good exposure to a range of Salesforce clouds more »

Skilled in testing WordPress themes to ensure design fidelity and functionality. Front-End Languages: Strong knowledge of multiple front-end languages, including PHP, HTML5, JavaScript, React/Next.js, SCSS, CSS, and JQuery, with a focus on QA. Web Architecture: Good understanding of web architecture and responsive design principles. PHP and more »

WordPress Themes: Skilled in developing and converting designs into WordPress themes. Front-End Languages: Strong knowledge of multiple front-end languages, including PHP, HTML5, JavaScript, React/Next.js, SCSS, CSS, and JQuery. Web Architecture: Good understanding of web architecture and responsive design principles. PHP and MySQL: Strong understanding of PHP more »