AI Agent Developer

Leocode; Katowice; On-site; PLN 120,000 - 180,000; Full time

Benefits offered by this job

100% remote work

Team support

Cutting-edge technology

Job summary

A leading AI development firm in Katowice is seeking an AI Agent Developer proficient in JavaScript and Python. This role involves creating AI agents and intelligent automations, ensuring production accountability, and collaborating on innovative projects for international clients. Candidates should possess strong communication skills in both Polish and English, and have experience with AI tools like GPT and Claude. The position can be offered on a B2B basis or contract of mandate, either full-time or part-time.

Qualifications

• Experience building AI agents or LLM-based systems.
• Very good communication skills in Polish and English.
• Hands-on experience with AI tools and models.
• Hands-on with AI tools like GPT, Claude, LLaMA, BERT.
• Experience with Domain-Driven Design (DDD).
• Ownership and independence: fast reaction to production issues, monitoring, logs, observability, and preventing recurring failures.
• Ability to make decisions with incomplete documentation under time pressure.
• Excellent communication in Polish and English.

Responsibilities

• Build AI agents and intelligent automations.
• Connect technology with real business value.
• Take responsibility for what goes to production.

Skills

AI agent development

JavaScript

Python

Node.js

Communication in Polish

Communication in English

Production readiness

Observability/logs

Bilingual Polish/English

Tools

GPT

Claude

LLaMA

BERT

LangChain

LlamaIndex

Job description

We are seeking a skilled AI Agent Developer | LLM & RAG | to join our team. Integrator is a new business line at LEOCODE, focused on building AI agents and intelligent automations for real-world business problems. We create solutions at the intersection of software development and AI: from RAGs and multi-agent systems to advanced integrations with clients’ existing systems. We’re looking for people who can work independently, take ownership, and aren’t afraid to operate with incomplete documentation, changing requirements, and ambitious goals.

Join Us If You:

• Want to build AI agents, not just prompt models,
• Are interested in process automation, agent systems, RAG, eval, tracing,
• Think end-to-end (from idea to production),
• Take responsibility for what goes to production,
• Can connect technology with real business value.

Requirements:

Must Have:

• Experience building AI agents or LLM-based systems
• Strong knowledge of:
  • JavaScript / TypeScript
  • Python
  • Node.js
• Hands-on experience with AI tools and models (e.g., GPT, Claude, LLaMA, BERT)
• Practical experience with Domain-Driven Design (DDD)
• Ownership and independence:
  • Fast reaction to production issues (fix / rollback)
  • Thinking about monitoring, logs, observability
  • Preventing recurring failures
• Ability to make decisions with incomplete documentation and time pressure
• Very good communication skills in Polish and English

Nice to have

• Experience with RAG, MCP, context & memory, tool-use, eval, tracing
• Experience with frameworks like LangChain / LlamaIndex (or similar)
• Consulting or client-facing project experience
• Understanding of costs, timelines, and tech trade-offs

What we offer

💻 100% remote work
🌍 International clients
🧠 Cutting-edge tech and real AI use cases
🤝 B2B or contract of mandate (UZ)
⏱ Full-time or part-time
🧩 Team support and real impact on the growth of INTEGRATOR

Recruitment process

• Selected candidates will be invited to a 45-minute online meeting with a recruiter 👩🏼💻
• Technical interview + take-home Test Drive task
• Feedback and offer if the outcome is positive