javascript engineer jobs in Slough

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.

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

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...

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...

We're partnering exclusively with one of London's most prestigious trading powerhouses to hire a standout Front-End Software Engineer — someone who lives and breathes elegant UI engineering and wants to build products that matter at millisecond scale. This is your chance to work at the core of high-performance trading tech, crafting ultra-fast, hyper-polished interfaces used by some of the...

Job Description The Company At IRIS, we specialise in building the world’s most advanced food and beverage (F&B) ordering and management solutions for global hotel chains. Since 2010, we’ve been at the forefront of hospitality technology, providing an innovative cloud platform and app portfolio that enhances guest experiences across thousands of properties worldwide. Our solutions are trusted...

Role: DevOps Platform Engineer Level: Mid-Level Location: Leeds, West Yorkshire (Hybrid) Salary: £40,000–£48,000 + pension + performance bonus Eligibility: Must have the right to live and work in the UK About the Role This is a standout opportunity for a DevOps Engineer passionate about IoT and eager to work across high‑impact sectors including energy, aerospace, manufacturing, and...

About Us: 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 directly to the in-store shopping experience. Role: We’re looking for an experienced Frontend...

Senior Software Engineer (London, Full-Time) About Birl Launched in 2024, Birl has quickly become one of the UK’s most exciting circular commerce startups, redefining how resale and recycling can drive growth rather than cost. Birl’s plug-and-play platform integrates directly into a brand’s e-commerce site or in-store system, enabling customers to trade in pre-loved products for instant store...

SOFTWARE ENGINEER REMOTE (OPTION TO RELLOCATE) £110K + EQUITY THE COMPANY This innovative AI startup is redefining safety and reliability in AI models. While competitors like GPT and DeepMind struggle with hallucinations and illegal content generation, this company adds safety control layers to ensure AI outputs are trustworthy and compliant. Working with high-profile, they’re building AI...

Full Stack Engineer – New Launch Hedge Fund (L/S Equity) Location: London Type: Full-time (5 days per week on-site in Victoria) A newly launched fundamentally driven long/short equity hedge fund, focused on the European Industrials sector, is seeking a talented Engineer to join its growing London-based team. The firm, currently composed of senior professionals from top-tier hedge funds...

You will play a key part in the continued evolution of the platform, working on new products and features that directly support wealth managers and advisers. This is a hands-on role with real ownership and influence over technical decisions.

You will be joining a collaborative and supportive environment where engineers are trusted to do their best work.

Benefits - 9% pension contribution - Stock Options - Health Insurance etc This is your chance to perform the job you love and make a difference in society whilst doing it! Help this one-of-a-kind Social Good platform change the world by developing this one-of-a-kind eCommerce solution. The Company - $120m VC-backed Scale-Up - One of the fastest-growing companies in the world - 'Fast Company'...

Software Engineer Fully Remote | Permanent | Competitive Salary + Benefits Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Software Engineer to join their growing engineering team. This is an exciting opportunity to work on scalable, resilient systems while contributing to real-world solutions in the financial technology space. Key...

COMPANY DESCRIPTION HSSMI Consulting Ltd is a sustainable manufacturing innovation consultancy, focusing on helping manufacturers scale operations, improve productivity, and adopt circular economy practices. Since 2012, HSSMI has collaborated with government bodies, established manufacturers, and start-ups to deliver innovative and sustainable solutions. The company's expertise spans strategic...

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 Role Overview We are looking for a QA Automation Engineer to join a Pod-based delivery team working on critical applications and data platforms within a global financial market's environment. The role is key to...

You will work closely with designers and back-end developers to create seamless user experiences using modern front-end technologies.

You will write clean, maintainable code and ensure optimal performance across all devices. Key responsibilities: - Develop new user-facing features using React, Vue, or Angular

You will be responsible for designing, building and maintaining robust automation frameworks, working closely with developers, QA and product teams to ensure high quality, scalable solutions. Key responsibilities - Design and build automation frameworks from scratch using Playwright with JavaScript or TypeScript

Full Stack Engineer (JavaScript) – Tech Start-Up Remote (UK-based only) | Flexible Hours c£90k + Benefits (Pension, Private Healthcare, Death-in-Service, Equity Potential) We’re looking for a senior, backend-leaning Full Stack Engineer who thrives in the controlled chaos of a true early-stage start-up, the kind where there’s no QA team, no DevOps team, no predefined frameworks, no hand-holding ,...

Title – Junior JavaScript Engineer Client – Fintech Start-Up (Trading) Rate - Up to £100,000 + Bonus Location – London My client is a rapidly scaling fintech start-up looking for a Junior Front End Engineer (1–4 years’ experience) to join their growing team of talented software engineers. This is a fantastic opportunity to work alongside experienced technologists from top tech companies and...