JavaScript Developer jobs in City of Westminster

Position: Front End JavaScript Developer Apply now, read the job details by scrolling down Double check you have the necessary skills before sending an application. Reports to: Front End Development Team Lead Hours: 40 hours Location: 3 days in North London office (Monday – Wednesday) Salary: £60 - £80,000 + eligibility for performance bonus Start date: ASAP Purpose of the role: As a...

Backend developer to build scalable systems and APIs, working with Node.Js, TypeScript, and SQL/NoSQL databases.

Salary: £40-£45k (DOE) Read on to fully understand what this job requires in terms of skills and experience If you are a good match, make an application. Reporting to: Technical Director Location: Hybrid or fully remote (UK only) Role type: Full time Who we are We're Field — a design-first Shopify Plus e-commerce agency working with premium, high-growth brands. We're a small, senior,...

About Webigence and Spark Travel Is this your next job Read the full description below to find out, and do not hesitate to make an application. Webigence has 25 years of experience crafting UX‐first, often highly complex software. Our engineers pair forward‐thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is...

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.

You will work on a diverse range of challenges, from model-serving APIs and data pipelines to infrastructure for intelligent agents and automation frameworks.

You will collaborate closely with the CTO and engineering team to design, build, and scale production systems that integrate AI into real-world applications.

Antenne Books is a London-based distributor of independent publishing specialising in art, design, photography and contemporary culture. We are looking for a part-time software developer to maintain and develop our Shopify website, implement custom features, and explore new digital tools and integrations. If you would like to know a bit more about this opportunity, or are considering applying,...

Job Role: Lead Software Engineer, React Native Before applying for this role, please read the following information about this opportunity found below. Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our innovative application using React Native. Working with a...

Title: Forward Deployed Engineer – AI & Customer-Facing Technical Leader Are you ready to apply Make sure you understand all the responsibilities and tasks associated with this role before proceeding. Location: Remote Travel: Customer visits 4–5 days/month; occasional team gatherings Salary: Senior: €130–150k base + growth trajectory Principal: €160–200k base + package discussion Tech:...

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).

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.

You will be encouraged to evangelise and prototype new technologies and approaches to help shape the evolving architecture. The successful candidate must be: - Experienced in Core Java

Job Title: QA Automation Engineer (Python / PyTest / Cosmos DB)-Banking Client Exp Required Location: London- 3Days/week Onsite Duration: 6months+ Contract Inside IR35 500GBP/Day Scroll down to find the complete details of the job offer, including experience required and associated duties and tasks. Role Overview We are looking for a QA Automation Engineer to join a Pod-based delivery team...

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...

We're building the AI layer that autonomously runs small businesses. Working alongside technical founder Kai Feller (previous company was UK's largest bootstrapped exit of $300m), we're assembling an elite founding team that moves fast and gets things done. Candidates should take the time to read all the elements of this job advert carefully Please make your application promptly. As a Founding...

MUST BE BASED IN THE UK TO BE ELIGIBLE. Apply now, read the job details by scrolling down Double check you have the necessary skills before sending an application. Are you an experienced Full-stack Engineer seeking new and exciting opportunities? While we may not have an immediate vacancy, we’re always on the lookout for talented individuals to join our Talent Pool. Who We Are GSK is a...

Lead Engineer, Shopify (Scaling DTC Brand) Do you have the right skills and experience for this role Read on to find out, and make your application. Salary: Up to £100,000 base Location: UK-based, ideally London (flexible) One of the UK's fastest-growing, multi-million-pound consumer brands is hiring a hands-on Lead Engineer to own and scale its Shopify eCommerce platform. This is a senior,...

You will lead and mentor the engineering team while also writing production level code, setting technical direction, and ensuring excellence across the entire product. Your leadership and expertise will shape the future of Lureo and help define the next generation of spatial storytelling for creators around the world.

About Us: Are you the right candidate for this opportunity Make sure to read the full description below. We're a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up — no legacy, no patchwork systems — just a clean slate and a clear vision. Our mission is to bring the intelligence of modern machine learning...

Driven by Intelligence. Powered for the Future. If the following job requirements and experience match your skills, please ensure you apply promptly. 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 reliability across...