25 of 25 Permanent Full-Stack Engineer Jobs in Watford

Future Talent Pool - Full Stack Software Engineers from typescript/node javascript backgrounds, you'll be working with a major consumer products client on latest microservices ecommerce software solutions. The Role Excellent opportunity to work with More ❯

Full Stack Software Developer | Hertfordshire | Hybrid (x2 days a week in office) Please note the client is unable to offer visa sponsorship at this point - you must be eligible to work in the UK. Are you More ❯

Senior Full-Stack Engineer (TypeScript & LLM Integration) £80-110K + Equity A hugely exciting AI start-up is seeking several experienced Full-Stack Engineers to join a dynamic product team, focused on building innovative software powered by cutting-edge More ❯

💼 Full Stack Developer – Financial Compliance Innovation (Hybrid or Fully Remote) 📍 Location : London or Remote 🕗 Hours : 8:30 – 5:30 (Some flexibility required) An innovative financial organisation is seeking a Full Stack Developer More ❯

Full-Stack Engineer (TypeScript & LLM Integration) £60-80K + Equity A hugely exciting AI start-up is seeking several experienced Full-Stack Engineers to join a dynamic product team, focused on building innovative software powered by cutting-edge AI More ❯

Fullstack Developer – Python/Django £60,000 | Fully Remote (UK-Based) | Flexible Hours We’re working with a product-led scale-up in the proptech space that’s on the lookout for a Fullstack Developer to join their tight-knit More ❯

🔧 Full Stack Developer - AWS | Node.js | React - (Mid-Level) – Up to £55,000 📍 Location: Remote - Must Be UK Based 💻 Full Time | Flexible Working | Unlimited Annual Leave Are you a Full Stack More ❯

Job Title: Full Stack Software Engineer - Healthcare Industry: Biotechnology Research Location: UK (Remote) Princeton Biopartners is a best-in-class provider of integrated consulting solutions to the life sciences sector. Our mission is to improve the evidence base, accessibility, and dissemination of biomedical innovations … pain points via integrated and transformative projects. We are looking for a highly motivated and talented Full Stack Software Engineer to become our first full-time technology hire. As a Software Engineer, you will be critical in bridging the gap More ❯

Founding Engineer (Full Stack) - Digital estate planning wealthtech Location: UK-based, remote-first (with occasional London meet-ups) Compensation: Founding equity + pre-seed salary Start: Immediate About Inheritly Inheritly is rethinking how families prepare for “death and taxes.” Our mission is to help … our first full-time engineer to shape the product and the codebase. The Role We’re hiring a Full-stack Engineer as a founding team member and likely future Tech Lead. You’ll report directly to the founding team, work More ❯

closely with Architecture, DevOps, and Product to deliver high-impact features in a fast-moving, innovation-driven environment. 🛠 Responsibilities Develop and maintain full-stack applications using Node.js , TypeScript , NestJS , and React Design and implement scalable serverless backends with AWS Lambda , API Gateway , DynamoDB , and Cognito Build More ❯

Senior Full-Stack Developer – High-Growth Tech Startup Location: Remote Salary: Up to £85,000 This ambitious, early-stage tech startup is transforming how digital platforms leverage data and automation. Backed by a growing client base and a clear product vision, they are building a solution … that integrates complex data sources to power real-time insights and streamlined workflows. They are now seeking a Senior Full-Stack Developer to join their lean, high-performing team. This is a pivotal opportunity for someone who thrives in fast-paced environments, enjoys autonomy, and brings … development from shaping APIs to delivering high-performance user interfaces helping define the technical direction of a rapidly evolving product. Responsibilities Lead full-stack development using NestJS, MongoDB, React, and TypeScript. Integrate and manage third-party APIs, including Meta’s API and a separate API for More ❯

Duties As Full Stack Engineer, you will work in small teams in a highly collaborative way, use the latest technologies and enjoy seeing the direct impact from your work. Our highly skilled system architects and development managers configure software packages and build custom applications More ❯

Senior Full Stack Engineer - TypeScript, LLMs Fully Remote - UK based Salaries paying £85k - £110k + equity Oliver Bernard have partnered with a growing AI start-up who have recently secured another round of funding, and are now looking for talented Senior Full Stack Engineers to shape the product and company from the ground up. We are looking for a Mid Level Engineer to join our client's dynamic product team. This is … an incredible opportunity to work with cutting-edge AI technologies and drive innovation in B2B software solutions. Role Overview: As a Senior Full-Stack Engineer, you will contribute to a unified codebase powering both B2B platforms and custom AI integrations. You'll be involved More ❯

Full Stack Engineer (backend leaning). 📍 Remote First (UK) with an office in Central London. 💰: £45,000 - £75,000 This is a unique opportunity to join a growing company aiming to revolutionise the way we do our finances. With a lean, agile team of … working in an exciting environment, directly contributing to the company’s success. About the Role. We’re looking for a Full Stack Engineer to help design, develop, and scale our FinTech platform. This role leans heavily towards backend development, where you'll be responsible … TypeScript 🔹Frontend: React.js 🔹Infrastructure: AWS Lambda, Serverless Computing 🔹Architecture: Microservices What We’re Looking For? 👀 🔹Hands-on experience as a Full Stack Engineer or in a similar role. 🔹Strong proficiency in Node.js, React.js, and TypeScript . 🔹Knowledge of cloud platforms (AWS) and serverless technologies More ❯

Join Our Dynamic Team as a Full Stack Engineer ✨ 📍Location: Remote (UK Hours) 🕹️Role Type: Contract (40 hours per week) 💲Salary: Competitive base salary equivalent of £45,000 pa 🤓 Experience Level: Jnr - Mid 🌈 About Us: GenderGP are transforming the gender non-conforming (GNC) sector … exceptional value and experiences to our GNC customers. As we continue to grow, we are seeking TWO passionate and dynamic Full Stack Engineer s to join our forward-thinking team. 💪 What You'll Do: We’re building a cohesive, high-performing in-house engineering … of GenderGP’s technology suite, including web applications, data analytics platforms, AI tools, and internal systems. We’re looking for a versatile Full-Stack Engineer who is passionate about working across the technology stack – from exciting and engaging user experiences through to More ❯

Staff Full Stack Engineer | AI Lending PaaS | Fully Remote (Must be based in UK) Join a fast-growing, VC-backed startup on a mission to transform lending with cutting-edge AI. Our AI-driven Lending Platform-as-a-Service (PaaS) is set to redefine … stage, build from the ground up, and own significant equity in a high-growth company. What You’ll Do 🛠 Design & build scalable full-stack applications for AI-driven lending automation ⚙️ Develop high-performance APIs and backend services using Go and Node.js 🎨 Create sleek, intuitive UIs with … engineering, DevOps, and CI/CD in a fast-moving startup What We’re Looking For ✅ 7 + years of experience in full-stack development ✅ Strong expertise in Go, Node.js, React, and TypeScript ✅ Experience building scalable, event-driven architectures (Kafka, gRPC, etc.) ✅ Solid understanding of cloud More ❯

Full Stack Engineer - TypeScript, LLMs Fully Remote - UK based Salaries paying £60k - £80k + equity Oliver Bernard have partnered with a growing AI start-up who have recently secured large round of funding, and are now looking for talented Full Stack Engineers to shape the product and company from the ground up. We are looking for a Mid Level Engineer to join our client's dynamic product team. This … is an incredible opportunity to work with cutting-edge AI technologies and drive innovation in B2B software solutions. Role Overview: As a Full-Stack Engineer, you will contribute to a unified codebase powering both B2B platforms and custom AI integrations. You'll be involved More ❯

Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension Urgently hiring for x2 Full stack engineers, experienced required: 6+ years experience working with JavaScript/TypeScript … with performing in Leetcode style interviews (Data Structures and Algorithms) A degree in Computer Science or Software Engineering related Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension * If interested More ❯

and intelligent agents. Support the transition of these POCs into scalable, production-ready solutions. C Contribute to the design and development of full-stack applications for both GenAI and traditional projects, while helping establish the infrastructure for reliable end-to-end deployments. Candidate Profile Eligible for More ❯

Role : Senior Full Stack Engineer (BE Lean) Salary range : 65,000 - 100,000 (+ stock options) Location: Remote (must be willing to travel for conferences) Tech stack includes : React, Typescript, React Native, AWS, Postgres Multiple Full Stack Engineers More ❯

Senior Full Stack Engineer | VC Funded Gifting/Rewards | Remote 💻 Senior Full Stack Engineer 🎁 Gifting/Rewards Platform 🌍 Remote First - (UK) 💰 Up to £110,000 p/a ⚙️ Stack: Typescript, Node, React, Fastify et al. I … and celebrate teams and clients with meaningful gifts, vouchers and unique experiences. We are looking for a backend leaning Senior Full Stack Engineer, proficient in Typescript, Node, React and Fastify with cloud experience to join a growing team of customer-centric, cross functional engineers. … If you are a Senior Full Stack Engineer looking to join a thriving company working to improve employee satisfaction across the country, this will be a perfect opportunity. Interested and available to start within a month? Apply within or reach out to James for More ❯

Freelance Full Stack TypeScript Engineer - B2B Sustainability - Remote - Outside IR35 I'm very excited to be back working with one of our long-standing partners. a revolutionary B2B Sustainability Platform, who are looking for a delivery-focussed Fullstack Engineer. The client is an awesome More ❯

Engineer - Early-Stage Startup - Python/Django/Node.js A profitable, fast-moving startup is looking for a Full Stack Engineer to join a small, focused team. This is a unique opportunity to work directly with a technical founder , ship quickly to … help build something users genuinely love, this might be the right fit. Fully remote. Flexible hours. High impact. No fluff. Fully Remote Software Engineer - Early-Stage Startup - Python/Django/Node.js More ❯

paced environment, this is the perfect opportunity for you! Role As a Senior Ruby on Rails Developer, you will be working on full-stack development, with a particular focus on building high-quality, scalable web and mobile applications. You’ll be joining a small, close-knit … team and play an instrumental role in shaping the future of their platform. Key Responsibilities - Lead full-stack Ruby on Rails development efforts for new features and enhancements. - Collaborate closely with product and design teams to define technical solutions. - Work with cutting-edge technologies like Hotwire … within the team. - Maintain and improve the scalability and performance of the platform as they grow. You’ll Have: - Proven experience with full-stack Ruby on Rails development. - Experience with Hotwire and Stimulus. - Solid experience with mobile development - with Rails-based frameworks. - Ability to thrive in More ❯

technical ability, but also your theoretical knowledge and the way you communicate that to others. Here's an opportunity for a senior FS Engineer to join a team of 10> who're building the next LLM driven app that allows business to create custom software - think Lovable but More ❯