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 end-to-end features
– from API design and data models to polished UIs and production monitoring.
Build scalable backend APIs in
Python/FastAPI
Ship high-quality frontends using
Next.js (React, TypeScript) + TanStack (Query/Router)
.
Design and evolve agent workflows in LangChain/LangGraph that are robust, observable, and debuggable (not just prompt hacks)
Work with both structured and unstructured procurement data (RFQs, emails, quotes, contracts)
Build data \& system integrations (ERP, email, supplier systems)
Help shape our architecture, reliability, and engineering best practices as we grow
Collaborate directly with founders, PM, and customers to understand real procurement workflows and turn them into product.
Requirements
Strong
Python
skills - clean, maintainable, well-tested code matters
Professional experience with React/Next.js and TypeScript
Experience in
data engineering
and backend architecture
Comfortable building and scaling
RESTful APIs
Curiosity about how LLMs can be used in real-world settings
A builder mindset
- you like to ship, measure, and iterate rather than bikeshed
Comfort with
ambiguity and ownership
: you spot problems, propose solutions, and drive them to completion without waiting for perfect specs
4+ years
experience in relevant (Start-Up) roles
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
(FastAPI, LangChain, LangGraph, LangSmith)
Next.js
,
React
,
TypeScript
,
TanStack Query/Router
AWS
(Bedrock, ECS Fargate, Lambda, SQS/SNS)
GitHub CI/CD , Sentry \& Grafana \& Prometheus
Postgres,
Redis
Large Language Models (LLMs) and evaluation tooling