Senior Python Developer

Quick Facts

• Role: Senior Python Developer

• Salary: 1000–1200 PLN/day (B2B + VAT)

• Work model: Hybrid (2/3 days per week in office) from Gdynia/Gdańsk/Warszawa

Description

You will work on a financial project modernizing legacy applications using agentic AI code migration and automation. The role focuses on building AI-powered agent workflows and tooling for automated code analysis, migration, and refactoring, integrated into CI/CD and deployment platforms. You will collaborate with application teams and continuously test, evaluate, and improve AI-generated migrations.

Responsibilities

• Design, develop, and improve AI-powered agent workflows for legacy code modernization

• Build and maintain tooling for automated code analysis, migration, and refactoring

• Develop solutions in Python using clean, maintainable software engineering practices

• Integrate AI-driven workflows with CI/CD and deployment platforms (Tekton, ArgoCD) and automation (Ansible)

• Work with LLMs and agentic coding tools, including prompt and tool-use workflows

• Analyse legacy codebases and transform them into modern, platform-approved technology stacks

• Collaborate with application teams to make migration cases reliable and repeatable

• Experiment with different LLM providers/models in a vendor-agnostic setup

• Contribute to testing, evaluation, and continuous improvement of AI-generated migrations

• Work with containerized environments using Docker and Kubernetes

Requirements

• Strong programming skills in Python

• Solid software engineering fundamentals: Git, code review, testing, and clean code

• Practical CI/CD and containerization knowledge: Docker and Kubernetes

• Hands-on experience with LLMs, prompt engineering, and AI-assisted development

• Understanding of agentic AI concepts: agents, tool use, agent workflows

• Ability to read and understand legacy code in different languages, including Java

• Experience with CI/CD and GitOps tools such as Tekton or ArgoCD

• Knowledge of Ansible or other Infrastructure as Code tools

• Familiarity with agentic coding tools such as Claude Code (or similar)

• Knowledge of LLM evaluation, context engineering, or Model Context Protocol (MCP)

• Strong analytical/problem-solving skills with a structured approach to experimentation

• Good English communication and ability to collaborate in a team

Benefits

• Flexible work organization and Scandinavian work-life balance culture

• Time and funding for additional training

• International, English-speaking environment and integration meetings

• Opportunity to work in a modern financial setting and contribute to reliable automation of legacy modernization