Senior Python Consultant

JobCubby; Poland; Hybrid; PLN 179,000 - 220,000; Full time

Job summary

JobCubby is seeking a Senior Software Consultant to own end-to-end solutions from business requirements through development to production support. You will work in an agile team of 4-6 engineers with a dedicated product owner, delivering iterative value while maintaining system stability.

You'll apply strong Python backend skills (Django/Flask/FastAPI), cloud basics, and a hands-on approach to testing, containerization, and CI/CD.

Qualifications

• Strong experience in Python.
• Backend fundamentals: microservices, API design, service integration.
• Experience with Flask / FastAPI / Django.
• Cloud/DevOps basics: containers and CI/CD; cloud environments (Azure/GCP/AWS).
• English communication; ability to work with local and distributed teams.

Responsibilities

• Deliver end-to-end solutions from business requirements through development to production support.
• Work in an Agile team with a product owner; deliver iteratively to production.
• Participate in analysis, development, testing, and production support.
• Ensure product stability with ongoing production support and debt balancing.

Skills

Python

Backend development

API design

Cloud/DevOps basics

English communication

Full-stack mindset

Tools

Flask

FastAPI

Django

Docker

CI/CD

Azure

GCP

AWS

Kubernetes

Job description

Type of contract: B2B contract

Salary range: 130-160 PLN/H

What will you do?

As a Senior Software Consultant, you will delivering end-to-end solutions from business requirement through development to production support. You will operate in an agile team environment, contributing to iterative delivery, ensuring technical quality, and maintaining system stability while balancing ongoing improvements and new development initiatives.

Your tasks

• Work within a team of 4-6 engineers with a dedicated product owner.
• Take business requirements, divide them into stories, and deliver them iteratively to production.
• Participate in analysis, development, testing, and production support as part of the same role.
• Ensure product stability by providing ongoing production support.
• Identify areas of technical debt and help balance it with new functionality.
• Design solutions aligned with technology guidelines and constraints.
• Collaborate with team members through pairing and knowledge sharing.
• Hybrid work from our client office in Kraków (6 days a month). We are open to candidates from another locations who are willing to travel to Kraków 6 days a month.

Requirements

• Strong experience in Python.
• Solid backend engineering fundamentals: microservices, API design, service integration, clean code and maintainable architecture.
• Experience with Flask / FastAPI / Django.
• Practical cloud/devops basics: containers (Docker) and CI/CD exposure; comfort working in cloud environments (Azure/GCP/AWS).
• LLM awareness: working knowledge of LLM application patterns (e.g., prompt fundamentals, RAG basics, tool/function calling concepts) or strong motivation to learn and apply them in real products.
• SQL and practical experience with relational databases.
• Confidence in delivering production-quality code: testing mindset (unit/integration tests), debugging and operational support.
• Clear communicator in spoken and written English, comfortable working with local and distributed teams.
• Full-stack mindset: willingness to collaborate across the stack and learn frontend where needed
• Hybrid work from our client office in Kraków (6 days a month). We are open to candidates from another locations who are willing to travel to Kraków 6 days a month.

Nice to have

• Hands-on experience building LLM applications (agents, tool/function calling, RAG pipelines).
• Experience with LangChain / LangGraph or similar orchestration frameworks.
• Experience with vector databases and retrieval/search patterns.
• LLM evaluation/observability tools (e.g., LangSmith/LangFuse or similar).
• Cloud LLM platform experience (e.g., Azure OpenAI or equivalent).
• Strong data/ETL familiarity (pandas/numpy) and pragmatic data handling.
• Finance/markets domain experience (FX/Rates).
• Experience with Kubernetes and mature CI/CD practices.
• Familiarity with internal GenAI learning paths / programmes (prompt engineering, RAG, agents, LLMOps).

GDPR clause

Based on Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such a data and repealing Directive 95 /46/EC (known as a "GDPR"), I hereby give consent to GFT Poland Sp. z o.o. (90-118 Łódź, ul. Kilińskiego 66) to process my personal data for the purpose of: a) ongoing recruitment process for the position I am applying; b) recruitment processes organized in the future.