JavaScript jobs in Harlow

Senior Javascript Engineer (Node.js / AI) | Publishing 📍 London (Hybrid – min. 1 day per week) 💰 Up to £80,000 (pro rata) 📄 6-month Fixed Term Contract We’re partnering with a well-established publishing organisation undergoing a major digital and AI-led transformation . With a strong global pres

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global mark

Senior Full-Stack JavaScript Engineer / Senior Developer / Staff Engineer (JavaScript) – Thought Leader Node.js / React / Next.js / AWS Serverless London (Hybrid - office based Tues/Weds/Thurs) £90k + Bonus + Excellent Benefits Discretionary bonus (10%), Private Healthcare, 25 Days Holiday, 5% Pensi

hackajob is collaborating with American Express to connect them with exceptional professionals for this role. You Lead the Way. We’ve Got Your Back. With the right backing, people and businesses have the power to progress in incredible ways. When you join Team Amex, you become part of a global and d

Senior Javascript Engineer (Node.js / AI) | Publishing 📍 London (Hybrid – min. 1 day per week) 💰 Up to £80,000 (pro rata) 📄 6-month Fixed Term Contract We’re partnering with a well-established publishing organisation undergoing a major digital and AI-led transformation . With a strong global pres

JavaScript/TypeScript Developer - Fintech - London Java/Typescript Developer needed by a growing Fintech. Key role in the next stage of their growth plans and help build the next generation of blockchain‑based financial infrastructure. Ideal if you’re early in your career and want real ownership, mo

JavaScript Engineers | Build the Future of Global Payments (Tech For Good) | Full Stack | £150K + Equity | Node.js / TypeScript / React.js | 5 Days Per Week London I am looking for an exceptional engineer to take ownership of a mission-critical payments platform, powering real-time money movement fo

Full Stack Software Engineer We are hiring a Full Stack Software Engineer to join a high-performing engineering team with a global media organisation. Our client are currently building an in-house solution to replace an existing, outdated CRM and require a Full Stack Software Engineer with strong ex

For more than 20 years, Talan has been advising companies and administrations, supporting them and implementing their transformation projects in the UK and abroad. With a presence on four continents and a headcount of 6000 consultants, our ambition is to reach the billion turnover by the end of 2024

hackajob is collaborating with Barclays to connect them with exceptional professionals for this role. Join Barclays as an IFC – React JS Engineer and play a key role in shaping the future of our technology landscape. In this position, you will help design, develop, and improve software using a range

Date live: 20/04/2026 Business Area: Group Economic Crime COO Area of Expertise: Technology Contract: Permanent Reference Code: JR-0000083623 Join Barclays as an IFC – React JS Engineer and play a key role in shaping the future of our technology landscape. In this position, you will help design, dev

Deutsche Bank

Job Description: Job Title Credit Quantitative Strategist Location London Corporate Title Associate Group Strategic Analytics (GSA) is part of Group Chief Operation Office (COO) which acts as the bridge between the Bank’s businesses and infrastructure functions to help deliver the efficiency, contro

Role Purpose Lead Level 3 support for critical digital services, ensuring high availability, fast incident recovery, and long-term resilience. Drive root cause elimination, design supportable architectures, oversee major changes, and mentor support teams. Ensure alignment with DDaT, DevOps, and Home

Mid & Senior JavaScript Engineers | Green Tech & AI | Full Stack | React.js / Node.js / TypeScript | London 2 Days Per Week | £50K - £120K + Healthy Equity Company: I'm looking for Full Stack Engineers who are excited about elegant systems as they are about real-world impact. Their mission i

Lead & Staff JavaScript Engineers | Full Stack | Hyper-Growth Fintech & Tech-for-Good | Typescript, React.js, Node.js, Next.js | £110k-150k + Equity | 3 days hybrid in London Opportunity: We're supporting a hyper-growth fintech client that is also tech-for-good. They’ve got big hiring plans

Principal JavaScript Recruiter Location: London Specialism: JavaScript / Frontend / Full-Stack Level: Principal Consultant Focus: Market Ownership Strategic Business Development Revenue Leadership You’re Already a Market Leader - But Are You Given the Freedom to Act Like One? You know the JavaScript

We're putting together a talented team to build the #1 training platform for Runners We help everyday runners become outstanding by building an incredible app providing world-class training, coaching and community for everyone, whether you're improving your 5k time or training for your first maratho

JavaScript Engineers | Build the Future of Global Payments (Tech For Good) | Full Stack | £150K + Equity | Node.js / TypeScript / React.js | 5 Days Per Week London I am looking for an exceptional engineer to take ownership of a mission-critical payments platform, powering real-time money movement fo

Application Software Engineer – JavaScript A fantastic opportunity for talented Software Developers, to join an industry-leading software company in either London or Cambridge offering the opportunity to work on a wide variety of web application infrastructure projects using a diverse toolset, with

Mid & Senior JavaScript Engineers | Green Tech & AI | Full Stack | React.js / Node.js / TypeScript | London 2 Days Per Week | £50K - £120K + Healthy Equity Company: I'm looking for Full Stack Engineers who are excited about elegant systems as they are about real-world impact. Their mission i