senior javascript developer jobs in Windsor, Berkshire

React Native Developer - Hybrid - Outside IR35 | React Native | FinTech | JavaScript | TypeScript We’re working with a fast-growing FinTech in London that’s building next-generation mobile products used by thousands of customers daily. They’re looking for an experienced React Native Developer to join the team on a contract basis, contributing to high-impact features across their mobile...

Position: Front End JavaScript Developer 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 Front End Developer you will join one of our multinational Scrum teams to create state-of-the-art software solutions. In all...

You will be a great fit if you: - Have 5+ years full-stack experience, with strong JavaScript/TypeScript depth. - Are backend-leaning, with deep Node. js and API experience. - Have previously worked in early-stage start-ups or very lean engineering teams. - Have extensive evidence of being a hands-on individual contributor in complex codebases.

Senior C# Developer / Backend Software Engineer (C# .Net) London onsite to £150k Are you an experienced backend focussed C# Developer? You could be progressing your career in a senior, hands-on role at a global Sports Trading business, earning substantial bonuses. As a Senior C# Developer within the trading engine team, you'll collaborate to design and develop real-time trading systems, you'll...

🚀 About Webigence and Spark Travel 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 anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS...

You must have proven experience in winning new clients. - Contract or Perm background is OK.

You will focus entirely on: - Winning new clients

You will not be responsible for candidate sourcing or delivery. We have a strong, dedicated delivery team who will support everything you sell.

On a mission to help people who have been diagnosed with chronic kidney disease, this start-up are looking to bring on a Senior TypeScript Developer, who’s fully embraced AI-assisted development. Their mission is to make life better for people suffering from kidney disease by building one of the first algorithm-based behavioural change programmes. The application that does this brings together...

Senior Backend Developer – Node.js, TypeScript, Kafka - up to £70k Leading E-commerce Brand | Up to £70,000 | Hybrid (2 days/week in London) We’re partnering with a leading e-commerce business that’s scaling a modern, event-driven platform to support high transaction volumes and continued growth. They’re looking for a Senior Backend Developer to join a highly capable engineering team working...

Senior Business Development Manager (12-Month FTC) Are you a seasoned Business Development professional with a passion for driving growth in high-profile legal practices? This is an exciting opportunity to join a leading global law firm’s London office and play a pivotal role in shaping the BD strategy for its Finance, Restructuring, and Structured Finance teams—recognised as market leaders in...

Senior Business Development Manager - Newly Created Role An exciting opportunity has arisen for a Senior BD Manager to join an elite US firm at a pivotal moment of growth and expansion. This newly created role will see you working as the right-hand person to the BD Director, playing a key role in shaping and delivering the firm’s strategic business development initiatives. You’ll work closely...

You will play an active role in supporting landowners, developers and project teams through the planning process, from early-stage assessment through to determination and appeal.

You will be confident working independently while contributing positively to team-based project delivery.

You will identify opportunities using strong practice insights and data-led intelligence, drive cross-selling, execute client-centric BD activities, strengthen client and internal stakeholder relationships, and inform the overall BD strategy to drive profitable revenue growth.

You will shape how our engineers build, test, release, and monitor software, ensuring frictionless workflows while keeping ownership of business logic, test quality, and development practices firmly with the product engineering teams.

Senior Python Quantitative Developer sought by a specialist and multi-award-winning Systematic Hedge Fund in a brand-new Core team designing and implementing a greenfield centralised Python/SQL/Linux/Docker platform for Backtesting, Pricing, Risk and Performance to be used across all Funds and Investment teams. Our client is an early Quantitative Investment Firm, managing around $10BN+ and with...

Technology is our how. And people are our why. For over two decades, we have been harnessing technology to drive meaningful change. By combining world-class engineering, industry expertise and a people-centric mindset, we consult and partner with leading brands from various industries to create dynamic platforms and intelligent digital experiences that drive innovation and transform...

Senior Frontend Developer Up to £90,000 Central London - Flexible Hybrid Options Health-Tech A start-up within the health space are seeking a Senior Frontend Developer to lead a high performing squad of engineers building a unique SAAS platform which is radically streamlining an existing complex process. You'd join as a Senior Frontend Developer and make a real impact on user facing features...

Senior Business Development Manager 12‑Month Fixed‑Term Contract — London Hybrid & Competitive Salary An international law firm is seeking a Senior Business Development Manager to join its London office on a 12‑month FTC. This senior role will support several high‑profile transactional and advisory practice groups, all of which work on complex, cross‑border matters. The Role Working closely...

Job Description Development Management Implementation (DMI) Senior Engineer Are you a dynamic, creative and delivery focused Highways Engineering / Transport Planning professional. Can you use your first-rate technical skills to assist Tetra Tech in a new and exciting relationship with Hertfordshire County Council (HCC)? If so, we would like to hear from you. HCC has recently awarded Tetra...

Senior Business Development Manager Role - Private Sector - Selling IT Services & solutions, Agile Software Development Services - A global consultancy that works with large businesses, governments and institutions that matter. - Fast-growing business working with clients around the world. Customers are senior leaders (e.g. CEOs, Chief Digital Officers, Transformation Directors) in businesses,...

Blue Legal are partnering with a leading law firm to recruit a Senior Business Development Executive on a 12-month fixed-term contract to join their London office. This is an exciting opportunity to join a dynamic BD team, working closely with senior BD Managers to support partners and associates across the EPI and Disputes practices. The role will involve collaboration with offices across EMEA,...