About the Position

We are seeking a Python Fullstack Developer to join our team in Krakow, Poland, working on AI infrastructure and 3D platform technology.

Location

Krakow, Poland (Hybrid)

Experience Level

Junior / Mid

Employment Type

Permanent Contract

Salary

15 000 – 19 000 PLN na UOP

About the Role

As a Software Engineer in the Integrations & Automations team, you will work at the intersection of AI infrastructure and core 3D platform technology. The role balances two primary responsibilities:

Engineering: Building APIs, AI agent tooling, and custom data pipelines to connect the platform with enterprise customer systems.
Developer Enablement: Serving as a technical subject matter expert for external developers and partners using open APIs and integrations.

This is a growth-oriented role designed for engineers with strong fundamentals and curiosity. You will be paired with senior engineers from day one, starting on well-defined tasks and taking on greater ownership as you advance.

Technologies: TypeScript / Node.js, Python, REST APIs, MCP / LLM Agent Tooling

Language Requirements: English (B2/C1+)

Responsibilities

Build

Develop and expand AI agent tooling using Model Context Protocol (MCP) to enable LLMs to interact directly with platform products.
Enhance Python plugin and scripting APIs to automate workflows for clients and partners.
Build custom data integration pipelines in collaboration with Customer Success teams and enterprise clients.
Write and maintain automated test suites to ensure high system reliability and integration quality.

Support & Enable

Act as the technical expert for open APIs, answering developer queries regarding endpoints, parameters, expected outputs, and code samples.
Own and maintain accurate open API documentation across all platform releases.
Build internal AI-assisted tools (e.g., using LLMs) to streamline support ticketing, draft responses, and automate status updates.

Requirements (Must Have)

Solid programming fundamentals in TypeScript/JavaScript or Python, with a willingness to work in both.
Active use of, or eagerness to adopt, AI coding assistants (such as Claude Code or Codex) as part of your daily workflow.
Solid understanding of HTTP/REST API concepts (requests, responses, status codes, JSON).
Comfort with Git and collaborative code-review workflows.
Clear written and spoken English for direct communication across teams and with external developers.
Bachelor’s degree in Computer Science/Engineering or equivalent practical experience (bootcamp, internships, side projects).

Nice to Have

Hands-on experience with both TypeScript and Python.
Practical exposure to LLM agents, MCP tools, or AI developer infrastructure.
Basic exposure to C++ (sufficient to read existing code and write API wrappers).
Familiarity with gRPC, message queues (RabbitMQ), MongoDB/Redis, or Docker.
Experience building or consuming APIs, SDKs, plugins, or writing developer documentation.
Familiarity with 3D, CAD, or fashion-tech data formats.

What our Client Offers

Mentorship: Structured pairing with senior engineers from day one.
Modern Tech Stack: Broad exposure across an AI-powered product platform combining LLM technology with 3D graphics.
Impact: Direct impact on developer tooling used globally by top brands and partners.

About the Company

Our client is an international pioneer in 3D digital solutions and AI technology built for the fashion and apparel industry. Their software transforms how global fashion brands design, develop, and merchandise garments, significantly accelerating product lifecycles and reducing physical sampling through true-to-life 3D visualization.

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Python Fullstack Developer

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