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 they’re 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 You’ll Work With - Python (LangChain, LangGraph, LangSmith, FastAPI) - AWS (Bedrock, ECS Fargate, Lambda, S3, SQS/SNS) - Next.js, 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