Arcus Search
Senior Full Stack Engineer
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The Role
Hybrid, 1 day per week in the London office. Plus Monday–Thursday onsite once every 7 weeks.
We're hiring a Senior Full-Stack Engineer to help lead the development of our clients 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, transforming how organisations adopt AI
- Set standards for full-stack quality, testing, maintainability and technical design
- Work closely with the CTO, Director of Engineering, 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
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Our Stack
- Frontend: Vue 3, TypeScript
- Backend: Python, FastAPI, Postgres
- 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 acceptable)
- 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
- Proven skills harnessing AI-native ways of working to ship quickly without sacrificing quality
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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 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.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
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