javascript engineer jobs in City of Westminster

Senior JavaScript / TypeScript Engineer | Data Visualisation | 2D Graphics London | to £200,000 depending on exp. I'm hiring a Senior Engineer to work on a widely-used, open-source charting library relied on by thousands of engineers building data-intensive products. This is not a typical frontend role. You’ll be working at the heart of a graphics and visualisation engine — solving problems...

You will collaborate with our design team on feature ideation and user experience. Your role will involve building and maintaining TypeScript components using React, Node, and NextJS. Additionally, you will be responsible for translating Figma designs into modular, reusable UI elements.

Senior Software Engineer (London, Full-Time) Read the overview of this opportunity to understand what skills, including and relevant soft skills and software package proficiencies, are required. About Birl Launched in 2024, Birl has quickly become one of the UK's most exciting circular commerce startups, redefining how resale and recycling can drive growth rather than cost. Birl's...

You will work closely with product managers, designers, and other engineers to solve complex problems and create intuitive solutions that help simplify financial workflows for our users. You'll have the opportunity to own critical features and contribute to the overall architecture of our platform.

Title: Software Engineer in Test Do you have the following skills, experience and drive to succeed in this role Find out below. Company: Specialist Technology / eCommerce Platform Location: London – 2-3 days a week Salary: up to £60,000 + benefits Tech essentials: Javascript and either Cypress or Playwright Interview process: 3 stage interview process Why should you be interested in this...

You will play a pivotal role in high-impact projects across our entire stack, from crafting polished user interfaces in Next. js and React Native to building robust backend services in Python. This is a high-impact opportunity for someone eager to learn fast, take ownership, solve real problems, and help power the next generation of educational technology.

Full Stack Engineer – New Launch Hedge Fund (L/S Equity) Is this the next step in your career Find out if you are the right candidate by reading through the complete overview below. Location: London Type: Full-time (5 days per week on-site in Victoria) A newly launched fundamentally driven long/short equity hedge fund, focused on the European Industrials sector, is seeking a talented Engineer...

Job Title: QA Automation Engineer (Python / PyTest / Cosmos DB)-Banking Client Exp Required You could be just the right applicant for this job Read all associated information and make sure to apply. Location: London- 3Days/week Onsite Duration: 6months+ Contract Inside IR35 500GBP/Day Role Overview We are looking for a QA Automation Engineer to join a Pod-based delivery team working on...

Senior Software Engineer Is this your next job Read the full description below to find out, and do not hesitate to make an application. Cheltenham or London (Hybrid - 2 days a week onsite) Up to £80,000 + excellent benefits We're working with a specialist secure technology consultancy supporting some of the UK's most security-conscious organisations. They're looking for a Senior Software...

You will be responsible for designing, building and maintaining robust automation frameworks, working closely with developers, QA and product teams to ensure high quality, scalable solutions. Key responsibilities - Design and build automation frameworks from scratch using Playwright with JavaScript or TypeScript

You should have a passion for both science and engineering, a proven ability to deliver production-ready solutions, and a collaborative spirit to work closely with our product and research teams. Note: the role is 3-4 days per week in the office in London (based in Hammersmith).

Driven by Intelligence. Powered for the Future. If you are interested in applying for this job, please make sure you meet the following requirements as listed below. Avant Intelligence is a global innovator in AI-powered robotics and intelligent inspection solutions. At the forefront of industrial digitalization, Avant develops autonomous robotic systems that enhance safety, efficiency, and...

Location Read on to fully understand what this job requires in terms of skills and experience If you are a good match, make an application. - Remote, but requirement to meet up once a month for in-person collaboration day - UK based About Akixi Akixi is a leading provider of SaaS analytics solutions for cloud-based communication platforms, helping service providers and enterprises gain...

Department Tech Scroll down to find an indepth overview of this job, and what is expected of candidates Make an application by clicking on the Apply button. Employment Type Full-time, London Office Attendance Expectation Hybrid About the role At &Dine, we're building a community of foodies, connecting authentic and talented food makers to customers who are hungry for better food...

Accelerant is building a new platform that will serve as the backbone of how risk is exchanged in the future. The Product & Technology team is looking for a Full Stack Software Engineer who is passionate about building high quality software systems that are valued by customers. Experience, qualification, and soft skills, have you got everything required to succeed in this opportunity Find out...

At Ripple, we're building a world where value moves like information does today. It's big, it's bold, and we're already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And we get to do the...

The Role: Check below to see if you have what is needed for this opportunity, and if so, make an application asap. Pre-Sales Engineer / Solution Architect - Design and develop solutions incorporating Grass Valley products, ranging from single components (such as video switchers, camera chains, or SDI routers) to more complex architectures, including Broadcast IP infrastructures, cloud-based...

SOFTWARE ENGINEER In order to make an application, simply read through the following job description and make sure to attach relevant documents. REMOTE (OPTION TO RELLOCATE) £110K + EQUITY THE COMPANY This innovative AI startup is redefining safety and reliability in AI models. While competitors like GPT and DeepMind struggle with hallucinations and illegal content generation, this company...

Senior Product Engineer (Python, React, TypeScript) Scroll down to find an indepth overview of this job, and what is expected of candidates Make an application by clicking on the Apply button. Are you passionate about building world-class products that empower customers globally? Join a fast-paced, venture-backed AI technology company at a pivotal stage of growth! My client are a...

About Euphoric: Take the next step in your career now, scroll down to read the full role description and make your application. Euphoric builds AI-first employee benefits administration software for the world's largest and most prestigious employers. Born out of Peppy Health — a fast-growing, category-defining Series B startup — we spun out in May 2025 to tackle a far bigger...