Mid-Level Python Developer

Quick Facts

• Role: Mid-Level Python Developer

• Project: Internet banking application for a bank customer

• Collaboration model: Hybrid (Warsaw)

• Contract: B2B

• Rate: 100–105 PLN/h net

• Start: ASAP

• Duration: 3–6 months

Description

Join an agile team delivering increments every two-week sprint for a high-scale internet banking platform used by millions of daily users. The work focuses on backend services, APIs, data processing (ETL/ELT), analytics solutions, and integrations with external systems and BI. You’ll also support automation tooling, optimize performance, and maintain code quality through reviews.

Responsibilities

• Implement backend services, APIs, and system components.
• Perform data processing (ETL/ELT) and integrate with databases and external systems.
• Develop automation tools and scripts supporting business processes.
• Build and maintain analytics solutions and integrate with BI systems.
• Optimize application and data processing performance.
• Participate in code reviews and ensure code quality.
• Collaborate with analysts, architects, and DevOps teams.

Requirements

• Minimum 3 years of commercial experience as a Python Developer (mid level).
• Knowledge of at least one framework: FastAPI, Flask, or Django.
• Good SQL knowledge and experience working with databases.
• Experience with data processing and working with Pandas.
• Experience creating and integrating APIs.
• Knowledge of Git and CI/CD practices.
• Ability to understand business requirements.

Nice to Have

• Experience with cloud environments.
• Experience building ETL/ELT processes or integrating with BI tools.
• Experience in banking/finance projects.
• Experience working in Scrum/Agile methodology.

What We Look For (Beyond Tech)

• Independence, responsibility, and follow-through.
• Care for code quality and attention to detail.
• Good organization and ability to learn quickly.
• Strong teamwork and cross-team collaboration.
• Good communication skills and an analytical approach to problems.