Senior Python Developer

Quick Facts

• Role: Senior Python Developer

• Focus: Python backend development with AI workflow orchestration

• Location: Kraków (remote work possible)

Description

Join a long-term project developing modern Python backend solutions for business process automation, data processing, and AI-enabled applications. Work in a distributed environment building scalable, reliable services and system integrations, including AI workflow orchestration with LLMs and agent architectures.

Responsibilities

• Design, develop, and maintain high-quality Python backend applications and services

• Build and evolve AI-enabled services, integrations, and components for business automation

• Implement and orchestrate AI workflows using LangGraph and LangChain with LLM integrations

• Contribute to agent-based solutions and automation of complex processes

• Own features end-to-end: analysis, design, implementation, deployment, and production support

• Participate in technical and architectural discussions; contribute to engineering best practices

• Conduct code reviews and ensure code quality, readability, scalability, and maintainability

• Support CI/CD processes and reliable deployments

• Diagnose and resolve complex issues in existing applications and integrated services

• Collaborate with the team in Agile (Scrum/Kanban) and translate business needs into technical solutions

Requirements

• Minimum 5 years of commercial experience in Python backend development

• Strong Python knowledge and experience in REST API design/development

• Practical experience with FastAPI and building production REST services

• Experience building AI applications and orchestrating AI workflows in Python

• Knowledge of LangGraph, LangChain, or similar frameworks for AI workflows and agent solutions

• Ability to profile and debug Python apps; find memory leaks, performance issues, and high CPU usage

• Experience efficiently processing large datasets and files with memory and runtime optimization

• Practical asynchronous programming skills in Python (asyncio, concurrent tasks)

• Experience diagnosing production problems and analyzing application logs

• Good Git knowledge and teamwork practices

• Experience maintaining and refactoring legacy applications; updating Python and libraries

• English proficiency at least B2

• Polish proficiency at least B2

Benefits

• Work on AI in practice: solutions based on LLMs, AI agents, and intelligent automation

• Modern technology stack: Python, FastAPI, LangGraph, LangChain, plus data-processing technologies

• Influence on architecture through technical decision-making and best practices

• Diverse challenges: system integrations, performance optimization, large-scale data processing, production-ready delivery

• End-to-end ownership from concept to implementation and maintenance

• International collaboration in a distributed team with English communication development