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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Full-Stack Software Engineer - **Company:** PAIR - **Location:** Greater London, UK - **Experience:** Expert - **Contract:** Temporary contract - **Skills:** Artificial Intelligence, Amazon Web Services, Microsoft Azure, Software as a Service, Cloud Computing, Relational Databases, DevOps, Github, Python (Programming Language), Salesforce.Com, Systems Integration, TypeScript, Web Applications, Web Platforms, ReactJS, Backend, Fastapi, Vue.js, AngularJS, Production Code, Data Analytics, Front End Software Development, Api Design, Software Coding, Terraform - **Published:** September 10, 2026 - **Apply:** https://www.collegerecruiter.com/job/2840586073-senior-full-stack-software-engineer ## About the Role We're looking for a genuine senior full-stack engineer who can take ownership, set direction and still enjoy writing code. Must-have experience * Strong track record as a senior engineer building production web platforms across frontend and backend * Strong experience with at least one modern frontend framework (Vue, React or Angular) * Deep experience building APIs, backend services and data-driven product features in a modern language (Python preferred, but strong experience elsewhere is fine) * Experience owning end-to-end technical design in a small or mid-sized engineering team * Solid experience working with relational databases * Comfort being the go-to person for technical decisions and trade-offs across a product area * Comfort working closely with product and design to shape practical, user-centred solutions * Pragmatic mindset: you value clarity, reliability and simplicity over over-engineering Nice to have * Vue and TypeScript experience * Python + FastAPI experience * Experience with multi-tenant SaaS systems * Familiarity with cloud platforms (Azure, AWS or GCP) * Experience stabilising or improving an existing codebase rather than starting greenfield * Experience working in a startup or small product team ## Description * 15,000+ users * Major enterprise deployments live today with the likes of the Ministry of Justice, you.com and The MTC * Backing from top-tier UK investors including Seedcamp, Venrex, Tom Hulme (Google Ventures) & Steve Garnett (ex-Chairman EMEA, Salesforce) We're a small, high-calibre team that ships fast. Engineers here have a direct and visible impact on the product, users, and company trajectory. If you want meaningful ownership and an environment that values great engineering, you'll thrive. You're joining after our Seed round, at a point where the core product is proven and live with enterprise customers, with huge scope to shape product, architecture, standards and technical direction as we take the platform to the next level. The Role We're hiring a Senior Full-Stack Engineer to help lead the development of our product platform across frontend and backend. You'll be responsible for building high-quality end-to-end product features while raising the bar for how we design, build and ship reliable software across the stack. This is a hands-on senior engineering role: you'll write production code, own key technical decisions, work closely with product and design, and mentor other engineers, without people management responsibilities. You'll: * Build end-to-end product features, from backend APIs and data models through to polished frontend UI * Set standards for full-stack quality, testing, maintainability and pragmatic technical design * Work closely with the CTO, EM, product and design to translate customer needs into robust, user-facing functionality * Make pragmatic technical decisions across frontend architecture, API design, data modelling and integrations * Improve the quality, usability, performance and reliability of the existing platform as usage grows * Own the full-stack role of key product areas, connecting AI-powered flows, learning content, authentication, core platform capabilities and user experience Our Stack Frontend: Vue 3, TypeScript Cloud: Azure as primary (plus a small number of services on GCP) Infra & DevOps: Terraform, GitHub Actions, OpenTelemetry You don't need to know this exact stack, but you should be very comfortable working across a modern web application and able to make sound technical decisions across both frontend and backend systems in production., Work closely with the product: You'll collaborate directly with product and design and see how your work impacts customers. A-player environment: We hire carefully. You'll work with thoughtful, driven engineers who care about their craft. ## Related Videos - [Lessons learned from building a thriving Vue.js SaaS application](https://www.wearedevelopers.com/videos/1666-lessons-learned-from-building-a-thriving-vue-js-saas-application) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [From DevOps to Scaled DevOps: How We’re Rebuilding Continuous Delivery as a Platform](https://www.wearedevelopers.com/videos/100018-from-devops-to-scaled-devops-how-we-re-rebuilding-continuous-delivery-as-a-platform) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Common Mistakes in Vue.js and How to Avoid Them](https://www.wearedevelopers.com/videos/958-common-mistakes-in-vue-js-and-how-to-avoid-them) - [How to Build Truly Production-ready Apps - Modern JS-based SaaS Stack for Indie Devs and Small Teams](https://www.wearedevelopers.com/videos/246-how-to-build-truly-production-ready-apps-modern-js-based-saas-stack-for-indie-devs-and-small-teams) ## Related Articles - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Frontend Developer Salary in The UK](https://www.wearedevelopers.com/magazine/233-frontend-developer-salary-in-the-uk) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)