AI Systems Full-Stack Engineer: Real-Time Workflows

La Fosse; United Kingdom; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Equity

Competitive base salary

Job summary

La Fosse is helping an AI-native productivity startup hire a Full Stack Engineer (AI Systems) to build the product layer that translates capabilities into production‑grade workflows. You’ll design how agents operate, fail, recover, and deliver consistent value across frontend, backend, and AI integrations.

Collaborate with ML, backend, and product teams in a fast‑moving environment to ship features end‑to‑end, ensuring latency‑aware, robust AI interactions and reliable operation.

Qualifications

• Strong experience across frontend and backend development.
• Solid knowledge of system design and API architecture.
• Experience with LLMs, RAG systems, or AI-powered applications.
• Ability to work in a fast-moving environment with evolving requirements.
• Strong ownership and end-to-end delivery capability.

Responsibilities

• Build end-to-end product features across frontend, backend, and AI integrations.
• Design agent workflows that handle planning, tool use, failure, and recovery across multiple steps.
• Integrate LLMs, memory, and external tools into reliable systems.

Skills

Full-stack engineering

System design

API design

LLMs/RAG

Ownership

Ambiguity handling

Job description

La Fosse is helping an AI-native productivity startup hire a Full Stack Engineer (AI Systems) to build the product layer that translates capabilities into production‑grade workflows. You’ll design how agents operate, fail, recover, and deliver consistent value across frontend, backend, and AI integrations.

Collaborate with ML, backend, and product teams in a fast‑moving environment to ship features end‑to‑end, ensuring latency‑aware, robust AI interactions and reliable operation.