Full-Stack Engineer

Department: Engineering

Location: London

Employment Type: FullTime

About algo1

algo1 is a VC-backed, stealth-mode startup building behavioural AI for the retail industry. Our platform has been built from the ground up with no legacy systems, no patchwork, just a clean slate and a clear vision. Our mission is to bring the power of modern machine learning directly to the in-store shopping experience.

Mission matters to us. What sets us apart is our obsession with grocery retail and the shopper experience. If you're excited by the opportunity to transform an experience that touches millions of people every day, you'll feel right at home here.

The Role

We’re looking for a Full Stack Engineer to work closely with product, design, mobile, and machine learning team members to design & build experiences that re-define in-store shopping. We believe that agentic, LLM-driven workflows are here to stay and are looking for engineers who have embraced this and will being a different perspective to our product development lifecycle.

You'll help build engaging & intuitive web experiences and the event-driven & real-time backend services that power them. You’ll work across the stack, implementing highly responsive UI components and real-time data flows and APIs on a backend designed for scale & flexibility.

What You Will Own

• Design and implement reactive, real-time web interfaces that help manage & redefine what is possible with in-store content personalisation

• Contribute to distributed, event-driven backend services connecting our web experience with information from remote devices and external data sources.

• Model and manage structured and semi-structured data across storage layers

• Integrate AI-driven personalisation and real-time insights into user flows

• Contribute to overall system design: service boundaries, data ownership, scaling, and observability

Essential Qualifications

• Built modern full-stack applications (Python/Java/Go + React/ts)

• Worked with a variety of storage technologies (eg. Postgres, Mongo, Redis, Object)

• Experience with async and bi-directional communication protocols and patterns (eg. WebSockets, SSE)

• Designed and implemented event-driven distributed systems (eg. Kafka/Pulsar, RabbitMQ, MQTT, or similar)

• Actively utilising and experimenting with AI development tools (eg. Claude, Copilot, Cursor) to speed up iteration, prototyping and overall development

Nice to Have

• Built and deployed services on any major cloud providers' services (Azure, GCP, AWS)

• Experience with container orchestration and service containerisation (Kubernetes, Docker)

• Worked with real-time data collection and/or processing

• Worked in an IoT or Edge-oriented architectures

• Experience or knowledge in retail POS, inventory, or loyalty systems

If you’re excited by the idea of shaping the future of retail and eager to make a real impact from day one, we’d love to hear from you.