senior javascript developer jobs in Slough

C# Developer / Full Stack Engineer (.Net Core JavaScript) St Albans / WFH to £100k Do you have expertise with C# .Net backend development combined with JavaScript skills? You could be progressing your career in a senior hands-on role at a technology driven trading company that invest in Sports betting markets with a flat structure where you will get your voice heard and can make a real impact...

About Us: We're a forward-thinking technology company building innovative web solutions using modern development practices. Our team values continuous learning, collaboration, and cutting-edge technology to create exceptional digital experiences. Position Summary: We're seeking an enthusiastic Entry-Level JavaScript Developer to join our dynamic team on a contract basis. This is an excellent...

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 expected to: ● Develop new features working with the data science ● Develop bug fixes and security patches promptly

You must be able to demonstrate the following: ● 6+ years experience full-stack development ● High proficiency with Typescript, React, Next, Azure, Pulumi and Node

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.

Location: 1 day remote + 1 day on-site in London Contract: Freelance, approx. 3-month rolling project Reports to: Technical Lead Rate: £250 - £350 per day Start: ASAP Intro We’re looking for an experienced Senior Developer to join us on a short-term freelance basis, working directly on-site with our London-based clients two days a week. We’re looking for a self-motivated Senior Developer...

🚀 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...

Senior Business Development Manager – Structured Cabling, Datacentre & Infrastructure Services London – City – Remote & Hybrid Working, 3 days office, 2 days home. Salary: - £55-85k + Commission + Bens (Multiple levels) Must have experiences of selling Datacentre/Structured Cabling and Infrastructure Managed Services. A global technology integrator with a long-established presence in...

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...

Job Description 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)...

Senior Economic Development Officer – Sectors & Clusters Location: Hybrid – 1–2 days in the office, with regular community engagement Pay Rate: Circa £30 per hour PAYE / £38 per hour Umbrella Contract: Interim Assignment We’re looking for an experienced and enthusiastic Senior Economic Development Officer to help drive growth and innovation across key sectors in a forward-thinking local...

Senior / Staff Python Developer - FULLY REMOTE High-growth AI Insurance Startup We're working with a well-funded, fast-scaling AI company building a highly ambitious product at enterprise scale. They're now looking to add Senior and Staff-level Python Developers to continue building the product. This is a product engineering role (not consultancy) 🔧 What you'll be doing - Architecting the...

You will work closely with senior BD managers, partners and associates to drive strategic initiatives, support client pursuits, manage campaigns, and deliver high‑quality BD outputs. The position also involves close collaboration with the firm’s clients & markets team and other business services functions.

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.

At Champion Data, our dedicated team are united by sport and driven by data. We strive to revolutionise and transform sport data globally by leveraging our cutting-edge technology and expert team, ensuring we deliver the best possible outcomes for our partners and clients. About the job Champion Data has an exciting opportunity for an experienced and dedicated Senior Developer to join our...

Senior Business Development Manager – Corporate Renewable Energy & Sustainability About Renewabl Renewabl is redefining how companies procure renewable energy. Our platform helps leading corporates and utilities buy and sell cost-effective renewable energy with real impact, and track their Carbon Free Energy (CFE) scores hourly. We help customers move beyond annual certificates to...

Up to £72,000 salary, car allowance, bonus, and a clear path for progression with two of the UK’s leading names in industrial services and hazardous waste management. This senior commercial role is ideal for someone ready to drive strategic growth across key sectors, including Civils, Demolition, and Utilities, while shaping long-term partnerships. Why you’ll love this role: - Competitive...

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...

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...