Full Stack AI Engineer

Zalion is an international AI start-up revolutionizing industrial procurement. We use cutting-edge AI agents to automate manual Source-to-Pay processes freeing up procurement teams for strategic work.

We are live with the largest companies in Europe & the US.

We love what we do. We get stuff done. We progress fast.

Tasks

• Own and ship agent-powered features end-to-end from idea and prototype to production rollout and iteration.
• Design build and deploy AI agents in production that interact with real systems (ERPs email supplier portals) and deliver measurable outcomes.
• Work with both structured and unstructured data (RFQs emails quotes contracts) to power memory retrieval and decision-making.
• Build scalable memory reasoning and orchestration pipelines using tools like LangChain/LangGraph and evaluation frameworks.
• Integrate with external APIs and legacy systems dealing with real-world messiness rate limits and failure modes.
• Contribute to our cloud infrastructure for scalable agentic workloads (observability CI/CD reliability cost-awareness).
• Solve hard problems around context management latency robustness and guardrails making agents debuggable and trustworthy not magic.

Requirements

• Strong Python skills and a track record of writing clean maintainable well-tested backend code
• Solid experience designing and building RESTful APIs and data models in production environments
• Experience with data engineering concepts (ETL data quality performance) and backend architecture
• Hands-on experience building something real with LLMs (OpenAI Claude etc.) side projects are fine as long as theyre concrete
• Comfort working in the cloud (ideally AWS) with CI/CD logging and monitoring
• A builder mindset you like to ship small iterate quickly and own your work end-to-end
• Comfort with ambiguity and ownership: you spot problems propose solutions and drive them to completion without waiting for perfect specs
• Roughly 4 years of professional experience including at least one role where you owned a production service subsystem or major feature.

Benefits

• Build AI agents that actually do things
• Massive autonomy zero bureaucracy
• Immediate impact your work ships fast to real customers
• Modern stack no legacy
• Competitive salary meaningful equity
• High-end equipment

Tech Stack Youll Work With

• Python (LangChain LangGraph LangSmith FastAPI)
• AWS (Bedrock ECS Fargate Lambda S3 SQS/SNS)
• React TanStack Query/Router
• GitHub CI/CD Sentry & Grafana & Prometheus
• Postgres Redis
• Large Language Models (LLMs) and AI infrastructure (evaluation tracing guardrails)
• Whatever the future brings that helps us ship faster and better