AI Engineer

Mid • Remote

$120 - $140/

Warsaw, Poland

At Pretius, we are looking for AI Engineer to a project in the financial industry, international team.

Project / Role

Design and implement stateful, multi-agent architectures using LangGraph
Build and maintain robust data pipelines and chains using LangChain primitives
Develop full stack applications (frontend & backend) enabling interaction with AI agents
Integrate LLMs with external tools, APIs, vector databases, and enterprise systems
Optimize agent performance, context handling, and output quality (including evals in LangSmith)
Manage automated deployments and cloud infrastructure for AI-based services
Collaborate with international teams to translate business logic into scalable AI workflows

Requirements

Strong proficiency in Python or TypeScript with a full-stack mindset, including experience with modern backend frameworks and frontend development (React/Next.js)
3+ years of experience in full stack software development
Hands-on experience building AI Agents and multi-agent systems using LangChain and LangGraph, as well as production-grade LLM applications
Ability to integrate LLMs with external APIs, tools, and vector databases, and to design scalable AI workflows based on complex business logic
Understanding of cloud environments and containerization (AWS/Azure/GCP, Docker/Kubernetes) is a strong advantage
Excellent English (min. C1)

What do we offer?

We focus on long- term relationships based on fair principles and reliability
Co-financing of the Multisport card and Medicover private healthcare
Modern office available
Team bonding activities, internal courses, conferences, certifications

Pretius

Pretius is a company operating in the technology industry, focusing on developing innovative solutions for payment platforms. The company is involved in projects that span across 180 countries, handling significant transaction volumes, similar to platforms like Revolut. Pretius emphasizes the development of advanced functionalities and integration APIs, utilizing a microservices architecture fully deployed in the cloud via AWS. The company values long-term relationships built on honesty and reliability, and it supports its employees with benefits such as sports and healthcare subsidies. Pretius also fosters a collaborative and growth-oriented work environment through team-building events, internal training, conferences, and certifications.