At a Glance
- Tasks: Lead the development of our AI platform, building end-to-end product features.
- Company: Fast-growing AI adoption startup with a mission to empower professionals.
- Benefits: Competitive equity, hybrid work, 25 days holiday, and strong investor backing.
- Other info: Join a driven team in a dynamic environment with excellent growth opportunities.
- Why this job: Make a real impact on enterprise customers while shaping the future of AI.
- Qualifications: Proven experience in full-stack development and strong technical decision-making skills.
The predicted salary is between 70000 - 90000 £ per year.
Who We Are
PAIR is a fast-growing AI adoption startup on a mission to help professionals and teams harness AI to do their best work. Our platform delivers personalised, AI-powered learning experiences and adoption support that help organisations rapidly harness AI at scale. We've already achieved:
- 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.
What We're Looking For
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
We care much more about what you've built and shipped than the exact technologies you've used.
Why Join PAIR?
- Real impact: You'll help shape the product platform that enterprise customers rely on.
- Ownership: This is not a narrow role: you'll have real technical authority and responsibility across the stack.
- 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.
- Backed by top investors: Strong financial footing and backing from some of the best with meaningful revenue traction.
- Mission: Help people and organisations use AI confidently, not fear it.
Compensation & Working Setup
- Equity: competitive, depending on experience and level
- Hybrid: 1 day/week in our central London office (Tuesdays)
- Anchor Weeks: 7 company-wide Anchor Weeks (in-person Mon-Thu) each year for deep collaboration
- Paid Leave: 25 days holiday + public holidays
- Right to work: We can sponsor visas for exceptional candidates; applicants normally have UK work rights
Hiring Process
We keep the process simple and respectful of your time:
- Application form - basic details, skills matrix and a short case-study question.
- Short self-paced technical exercise - practical and focused on full-stack engineering, product thinking and technical reasoning
- Technical interview (remote) - walk through your exercise + deeper discussion of your experience
- Final stage - meet the team in person and talk about how you'd help us scale PAIR over the next 12-24 months
Senior Full-Stack Engineer — AI Platform, Hybrid & Equity in London employer: PAIR
PAIR is an exceptional employer that fosters a dynamic and innovative work culture, perfect for those passionate about AI and its transformative potential. With a focus on employee growth and development, team members benefit from competitive compensation packages, including stock options, and the opportunity to work closely with ambitious organisations across the UK. Located in London, our team enjoys a vibrant city atmosphere while engaging in meaningful projects that drive real business outcomes.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Full-Stack Engineer — AI Platform, Hybrid & Equity in London
✨Tip Number 1
Network like a pro! Reach out to folks in your industry, especially those who work at companies you're interested in. A friendly chat can lead to referrals, and we all know how much that helps in landing a job.
✨Tip Number 2
Show off your skills! Create a portfolio or GitHub repository showcasing your projects. When you apply through our website, include links to your work so we can see your coding chops in action.
✨Tip Number 3
Prepare for the technical interview by brushing up on your full-stack knowledge. Practice coding challenges and be ready to discuss your past projects. We want to see how you think and solve problems!
✨Tip Number 4
Be yourself during interviews! We value authenticity and want to know what makes you tick. Share your passion for AI and how you envision contributing to our mission at PAIR.
We think you need these skills to ace Senior Full-Stack Engineer — AI Platform, Hybrid & Equity in London
Some tips for your application 🫡
Be Yourself:When filling out your application, let your personality shine through! We want to get to know the real you, so don’t be afraid to show your passion for engineering and AI.
Tailor Your Application:Make sure to customise your application to highlight your experience with full-stack development. Mention specific projects or technologies that align with our stack, like Vue or Python, to catch our eye!
Showcase Your Impact:We love seeing how you've made a difference in your previous roles. Share examples of how your work has improved products or processes, especially in a startup environment, as this is super relevant to us.
Keep It Clear and Concise:While we appreciate detail, clarity is key! Make sure your application is easy to read and straight to the point. This will help us understand your skills and experiences without getting lost in the details.
How to prepare for a job interview at PAIR
✨Know Your Stack
Familiarise yourself with the technologies mentioned in the job description, especially Vue 3 and TypeScript. Even if you haven't worked with them directly, understanding their principles will help you discuss how your experience aligns with PAIR's needs.
✨Showcase Your Impact
Prepare examples of past projects where you've made significant contributions. Highlight how your decisions shaped the product and improved user experience, as this role values ownership and direct impact on the platform.
✨Collaborate Like a Pro
Since you'll be working closely with product and design teams, think of ways to demonstrate your collaborative skills. Be ready to discuss how you've successfully translated customer needs into technical solutions in previous roles.
✨Embrace Pragmatism
PAIRS values a pragmatic mindset, so be prepared to discuss how you've prioritised clarity and simplicity over complexity in your work. Share specific examples where you made sound technical decisions that benefited the project.
