16 lead full stack engineer jobs found

Lead Technology Full Stack Engineer - 100% Remote - OUTSIDE IR35 You will lead a team of engineers, working across both Front End and Back End technologies while collaborating with architecture, cloud, product, and data science teams. The position is ideal for a hands-on technical leader who enjoys building scalable products and mentoring high-performing engineering teams. Lead Technology Full Stack Engineer Responsibilities Own end-to-end technical design and delivery across React, TypeScript, Vite, and Golang platforms. Define API standards, service architecture, and application design patterns. Lead engineering design reviews, code reviews, and technical decision making. Establish development standards, testing frameworks, and quality controls. Design and maintain CI/CD pipelines, containerisation, and cloud deployment processes. Collaborate with architects and data science teams to integrate AI and machine learning capabilities. Work closely with product and UX teams to...

Lead Technology Full Stack Engineer - 100% Remote - OUTSIDE IR35 You will lead a team of engineers, working across both front-end and back-end technologies while collaborating with architecture, cloud, product, and data science teams. The position is ideal for a hands-on technical leader who enjoys building scalable products and mentoring high-performing engineering teams. Lead Technology Full Stack Engineer Responsibilities Own end-to-end technical design and delivery across React, TypeScript, Vite, and Golang platforms. Define API standards, service architecture, and application design patterns. Lead engineering design reviews, code reviews, and technical decision making. Establish development standards, testing frameworks, and quality controls. Design and maintain CI/CD pipelines, containerisation, and cloud deployment processes. Collaborate with architects and data science teams to integrate AI and machine learning capabilities. Work closely with product and UX teams to...

Lead Technology Full Stack Engineer - 100% Remote - OUTSIDE IR35 You will lead a team of engineers, working across both front-end and back-end technologies while collaborating with architecture, cloud, product, and data science teams. The position is ideal for a hands-on technical leader who enjoys building scalable products and mentoring high-performing engineering teams. Lead Technology Full Stack Engineer Responsibilities Own end-to-end technical design and delivery across React, TypeScript, Vite, and Golang platforms. Define API standards, service architecture, and application design patterns. Lead engineering design reviews, code reviews, and technical decision making. Establish development standards, testing frameworks, and quality controls. Design and maintain CI/CD pipelines, containerisation, and cloud deployment processes. Collaborate with architects and data science teams to integrate AI and machine learning capabilities. Work closely with product and UX teams to...

Senior Data Engineer – DBT, AWS (native), AWS DMS, ETL, Warehouse Architecture, Redshift, IaC (Terraform) Reporting to the Head of Data for this global, rapidly modernising SaaS platform , this business is scaling its data capabilities to support native AI engineering and agentic workflows. We’re looking for a Senior AWS Data Engineer who wants to shape the future of their data platform, modern analytics stack, and the way data powers decisions across the business. This is a hands‑on, architecture‑shaping, strategy‑influencing role for someone who thrives at the intersection of engineering excellence, data modelling, platform design and cross‑functional leadership. You’ll own the full data lifecycle from ingestion to modelling to consumption , and play a pivotal role in building a reliable, governed, cloud‑native data ecosystem. What you’ll be doing: Architect and deliver a cloud‑native data platform across ingestion, modelling, warehousing and BI...

Senior Data Engineer - DBT, AWS (native), AWS DMS, ETL, Warehouse Architecture, Redshift, IaC (Terraform) - OUTSIDE IR35 Reporting to the Head of Data for this global, rapidly modernising SaaS platform , this business is scaling its data capabilities to support native AI engineering and agentic workflows. We're looking for a Senior AWS Data Engineer who wants to shape the future of their data platform, modern analytics stack, and the way data powers decisions across the business. This is a hands-on, architecture-shaping, strategy-influencing role for someone who thrives at the intersection of engineering excellence, data modelling, platform design and cross-functional leadership. You'll own the full data life cycle from ingestion to modelling to consumption , and play a pivotal role in building a reliable, governed, cloud-native data ecosystem. What you'll be doing: Architect and deliver a cloud-native data platform across ingestion, modelling, warehousing...

Role Summary Wagglyn is looking for an experienced QA Engineer / Test Lead to work with the existing engineering team on the testing and release readiness of its MVP trading platform. This is a hands-on contract role for someone who has tested complex financial or real-time systems before. It is not a generic web QA role and not a manual-testing-only role.   Scope The contractor will help define and execute the QA process across the front end, backend services, market data, execution flows, deployment environments and operational readiness. The role involves working with engineering, product and stakeholders to make sure releases are testable, repeatable and safe to promote through UAT and production-like environments. QA here is about proving the system behaves safely when data is live, services reconnect, orders are sent, risk state changes and deployments happen.   Profile ·      Hands-on QA engineer who has tested complex financial or real-time systems ·...

Contract Senior Full Stack Go Engineer | Outside IR35 Rate: Circa £550-£600/day Contract Length: 3 months initially Location: Manchester (up to 2 days onsite) Hybrid Working We're supporting a fast-growing technology product business as they continue to scale their engineering function and invest heavily in the evolution of their flagship platform. This is an opportunity to join a highly talented engineering team working on a genuinely complex product used by customers across the globe. You'll have the chance to influence technical direction, work across the full stack, and solve challenging engineering problems in a business that values curiosity, ownership and innovation. What you'll be doing: Building and enhancing scalable backend services using Go Developing modern front-end applications using React Working with AWS cloud services and cloud-native architectures Contributing to technical design, architecture and engineering best practices...

Who are OnCommerce? OnCommerce is a global selling platform that powers a growing network of retail channels, including: OnBuy - The only marketplace in the world to give customers instant Cashback on everything easyShop - An all-new marketplace created in collaboration with the easy® family of brands Comet - The iconic UK tech brand making its return later this year OnCommerce is growing fast, launching new brands and scaling to power the future of ecommerce. Be Part of the Story OnCommerce is constantly evolving. Everyone here plays a hands-on role in shaping what comes next, building brands that make an impact across global markets. There’s no red tape or rigid corporate structure; just smart people taking ownership and figuring things out as we build something big together. The pace is fast, priorities shift, things aren’t always perfectly set up, and you’ll often need to get stuck in and solve problems. But if you thrive in that kind of...

Senior AI Engineer - Agentic Platforms - AWS/.Net/React - Polyglot £800-900/day | Outside IR35 | Remote (UK) | Initial 6 months Our client are looking build out their next-generation AI capability, focused on developing an autonomous agent platform that will sit at the core of their product offering. They're looking to bring in two Senior AI Engineers to take a hands-on role in designing and delivering production-ready, agentic systems - this is not research or POC work, it's about building scalable, real-world AI solutions that integrate directly into a live platform. The focus of the role is on developing intelligent, self-learning workflows, multi-agent systems, and AI-driven automation that supports real estate professionals in managing leads, workflows, and customer interactions. You'll be working closely with Product, Architecture, and Data teams to define and build the underlying platform, with a strong emphasis on engineering quality, scalability, and commercial...

Backend-leaning Staff Engineer to modernise a core CRM and build AI-driven agent capabilities We're supporting a propety-tech organisation undertaking a major modernisation of an established CRM platform, alongside building autonomous, AI-driven workflows directly into core business processes. This role is strongly Back End-focused, requiring deep .NET engineering expertise, combined with proven experience building agentic AI systems in production. T he Role Rebuild and enhance core CRM functionality within a live production environment Lead Back End development using .NET/C#, ensuring scalability, reliability, and maintainability Work across the stack where needed (TypeScript/React) but with a clear Back End-first focus Design and implement: Autonomous agents Self-learning systems AI-driven workflow automation platforms Integrate AI capabilities directly into core product workflows and business processes Drive incremental modernisation of Legacy...

Senior AI Engineer – Agentic Platforms/£800–900/day/Outside IR35 Remote (UK)/6 months AWS/.Net/React We’re partnering with a market leader as they build out a next-generation AI platform at the core of their product suite. They’re looking for two Senior AI Engineers to design and deliver production-grade, agentic systems, this is not research or proof-of-concept work. You’ll be building scalable, real-world AI solutions embedded directly into a live platform. The focus is on developing intelligent, self-learning workflows, multi-agent systems, and AI-driven automation to support professionals in managing leads, workflows, and customer interactions. You’ll work closely with Product, Architecture, and Data teams to shape and deliver the underlying platform, with a strong emphasis on engineering quality, scalability, and commercial impact. - Key responsibilities: - Designing and building agentic architectures and multi-agent workflows - Developing AI-driven...

Senior Full Stack Engineer : Up to £500 per day Outside IR35 : Fully Remote : London A growing EdTech company is seeking a Senior Full Stack Engineer to join an ambitious team building a creator-led tutoring platform. They are moving fast and building something genuinely new in education. As a Senior Full Stack Engineer, you will work closely with the engineering team, ship features end-to-end, and see your code reach real users within days. Key Responsibilities as a Senior Full Stack Engineer: Build and ship features across the full stack Design and implement APIs and database schemas for new product features Integrate and optimise video streaming infrastructure Work with AI and ML models to power personalised tutoring features Implement payment flows and subscription management via Stripe Skills & Key Requirements: Strong React and Next.js skills Expertise with AWS Proficiency with Claude Code and agentic development patterns PostgreSQL...

Senior AI Engineer - Agentic Platforms £800-900/day | Outside IR35 | Remote (UK) | Initial 6 months Our client are looking build out their next-generation AI capability, focused on developing an autonomous agent platform that will sit at the core of their product offering. They're looking to bring in two Senior AI Engineers to take a hands-on role in designing and delivering production-ready, agentic systems - this is not research or POC work, it's about building scalable, real-world AI solutions that integrate directly into a live platform. The focus of the role is on developing intelligent, self-learning workflows, multi-agent systems, and AI-driven automation that supports real estate professionals in managing leads, workflows, and customer interactions. You'll be working closely with Product, Architecture, and Data teams to define and build the underlying platform, with a strong emphasis on engineering quality, scalability, and commercial impact. Key areas of focus:...

Backend-leaning Staff Engineer to modernise a core CRM and build AI-driven agent capabilities We're supporting a propety-tech organisation undertaking a major modernisation of an established CRM platform, alongside building autonomous, AI-driven workflows directly into core business processes. This role is strongly Back End-focused, requiring deep .NET engineering expertise, combined with proven experience building agentic AI systems in production. T he Role Rebuild and enhance core CRM functionality within a live production environment Lead Back End development using .NET/C#, ensuring scalability, reliability, and maintainability Work across the stack where needed (TypeScript/React) but with a clear Back End-first focus Design and implement: Autonomous agents Self-learning systems AI-driven workflow automation platforms Integrate AI capabilities directly into core product workflows and business processes Drive incremental modernisation of Legacy...

🚀 Full Stack Engineer 🌍 Remote 📄 Outside IR35 Contract 💰 £550 per day 📈 Scaling SaaS company We’re working with a scaling SaaS business looking for a Full Stack Engineer to support the build and rollout of new product features. You’ll work across a modern TypeScript / React frontend and Node.js backend, building clean, scalable applications and integrating with REST APIs . This is a hands-on contract role for someone who can move quickly, solve problems, and deliver high-quality software in a fast-moving product environment. You’ll need: 🔹 Strong full stack engineering experience 🔹 TypeScript and React experience 🔹 Node.js backend development experience 🔹 Experience building and integrating REST APIs 🔹 Comfortable working in a scaling SaaS environment 🔹 Able to work independently in a remote contract role Nice to have: ✨ Experience with cloud platforms, CI/CD, testing, or product-led SaaS teams 📩 Interested? Apply now or get...

Cyber Security Engineer (EDR Specialist) – Contract Location: Fully Remote UK Rate: £425 per day (Outside IR35) Contract: 9–12 months (initial 3-month rolling contracts) Overview We are seeking a hands-on Cyber Security Engineer with strong experience in Endpoint Detection and Response (EDR) technologies. This role will focus on technical delivery, tooling evaluation, and supporting Proof of Concept (POC) activities across enterprise security environments. A strong preference will be given to candidates with experience in CrowdStrike, Microsoft Defender for Endpoint, and Trend Micro solutions. Key Responsibilities Act as a technical SME for EDR platforms and endpoint security tooling Lead and support POC engagements, including setup, configuration, testing, and evaluation of security tools Assess and compare EDR solutions based on detection capability, performance, and operational fit Work closely with security operations and infrastructure teams to...