lead javascript developer jobs in Chelmsford

Are you an experienced JavaScript Developer with a passion for building solutions that power the utilities sector? One of my clients are hiring on a contract basis to help deliver technology that keeps the UK’s essential services running smoothly. What You’ll Do: - Develop and maintain scalable web applications for utility clients - Work with modern JavaScript frameworks (React, Node.js,...

We are looking for an experienced JavaScript developer with a minimum of 2-3 years experience who is proficient with React.js & Next.js. The primary focus would be on developing user interface components, implementing and executing them following well-known React.js workflows (such as Server Side Rendering). Also ensuring that these components and the overall application are robust, reusable...

Senior Full-Stack Engineer - Go/JavaScript Salary: £80,000 - £90,000 Location: Fully-remote Tech: Go, JavaScript, .NET About the role: We’re working with a leading organisation in the legal sector, renowned for their award-winning approach to technology-driven innovation, in support of their efforts to strengthen their growing SaaS team. They are looking for a senior software engineer with...

Location: Flexible/Remote - US/Eastern time zone THINKalpha is reshaping the capital markets. Our platform enables generative content using dynamic data. The core of our platform includes financial search, streaming analytics and is accompanied by both data and transactional frameworks. We are currently seeking a talented Front End Web Developer with a strong technical background and a passion...

Lead Software Developer required by a successful software company with an international client base. This is a hands on, Technical Lead level role. The technical focus is "full stack" working with C# and React. The Lead Software Developer will be responsible for - Full stack development with C# and React as part of the ongoing evolution of the company's core SaaS product - Evolving a...

A market leader in AI solutions is seeking a well experienced Lead Developer to join their innovative engineering team. You'll be responsible for providing technical leadership, customer-facing (requirements gathering), solution design, delivery oversight for AI projects and products. You'll take the lead in understanding client processes, solution viability and ensuring technical deliverables...

Position: Lead Azure Developer - Acturis API / Insurance products MS Stack - Developing frontend applications Salary: 80k-90k GBP Industry: Financial Services - Insurance Remote: 1 day in the office per month Location: Bristol or London If you're Senior Software Engineer who enjoys working with Acturis API and you're looking to join a small team of engineers, for a leading insurer, then...

Cognizant Apigee Lead Developer Hybrid role with once per month visit to the office in Leeds. Looking for someone who is SC Cleared or SC Eligible (has lived in the UK for the last 5 years) Summary Apigee Lead Engineer with strong expertise in Google Apigee, including migration from Apigee Edge to Apigee X. Skilled in bridging development and operations by automating workflows, optimizing...

About the Job We’re looking for a Lead Full-Stack Developer to take the reins of our web engineering team and drive the development of high-performance, scalable, and secure full-stack applications. This is a hands-on leadership role for someone who thrives at the intersection of architecture, development, and team mentorship. You’ll own our full-stack systems from backend services and cloud...

Lead Backend Developer Location: London - 1x a month Salary: Up to £120,000 (D.O.E) + benefits Fruition Group are partnering with a high-growth Insurtech unicorn that's scaling its engineering function. This is a unique chance to work across both proven, revenue-generating products and greenfield initiatives that are reshaping the future of insurance. It's an ideal role for a driven Lead...

Senior/Lead Magento Developer Remote (UK Based) £55,000-£70,000 This agency is growing at a rate of knots and with their recent project wins comes rapid expansion. They stand out as a clear example of how to do it right and are winning awards for it. You’ll be joining their established Magento team and leading on a significant project that is of high value/ critical importance to the...

🚨 Hiring: Lead Frontend Developer – £85–120k + 20% bonus + equity (London Hybrid OR Remote options available) I've partnered with a revolutionary Fintech whose code is helping the world’s top investment teams make smarter, faster, measurably better decisions. This team is building tools used by asset managers handling $250B+ in assets to fundamentally improve how investment decisions are...

Location: Mostly remote (with one day per month in Milton Keynes) Salary: £75,000 - £80,000 Contract type: Full time, permanent Our client is seeking a Lead Software Developer to join their engineering team. This is an opportunity to take on a pivotal technical leadership role within a collaborative, Agile environment, working alongside colleagues across multiple regions. If you are passionate...

You will have the opportunity to work with . Net Core, ReactJS, Cloud and Container technologies, numerous database engines all in a high performance, high availability, and highly secure environment.

You will want to push yourself and constantly learn new skills

You will be very well organised and can organise others

You will want to take ownership of our product and care about our platform

Lead Optimisation Engineer – Python / Pyomo / Gurobi 💻 Fully Remote (UK) | 🏙 2 Days in London Office per Month 💰 Base Salary up to £85,000 + Performance Bonus Are you a problem-solver who loves applying mathematical models to real-world optimisation challenges? We’re looking for a Lead Optimisation Engineer to take ownership of a core optimisation engine that drives intelligent routing and...

Lead .NET Software Engineer/Architect (Azure / Event-Driven Architecture) Location: Fully Remote Length: 3 month Inside IR35 Contract (Extension Available) We’re seeking a Lead .NET Engineer to take ownership of architecture, design, and delivery across high-scale, event-driven services powering millions of user notifications and messages. You’ll play a key role in shaping our technology...

Lead Software Engineer | React, TypeScript, Node.js, AWS | £90K | Fully Remote (UK-based) Are you a Lead Software Engineer who thrives on crafting elegant, user-centric applications, and also enjoys getting stuck into backend logic when needed? Want to work in a team that champions engineering excellence and real collaboration with design? This could be your next role. 🚀 About the Company...

We’re partnered with a leading digital transformation consultancy to hire an experienced ServiceNow Technical Lead to support enterprise-level delivery projects across ITSM, ITOM, and custom ServiceNow applications. Role Overview: You’ll take ownership of the technical direction, design, and delivery of ServiceNow solutions. The role involves leading development teams, working closely with...

Overview The ACS Technical Team: - Is an acknowledged authority within the Oracle NetSuite Global Business Unit (GBU), providing domain expertise and consulting services to the GBU's most significant, strategic, and most challenging customers around the globe. - Supports customers' full life cycle, including services targeted to ensure the success of complex, large-scale NetSuite...

Role: Technical Lead (Shopify) Location: Remote - UK Only Salary: £60,000 – £70,000 - Plus benefits We’re looking for a Shopify Technical Lead to join a growing digital team working on high-impact eCommerce builds. You’ll lead development across Shopify Plus projects, guide a talented team of developers, and help shape the technical direction for ambitious brands scaling online. What you’ll...