Senior Python Developer – Cybersecurity & FinTech

This role is for a Senior Python Developer working with a client active in the banking, cybersecurity, and FinTech industries. The position is based in Krakow with a hybrid work model and involves developing secure digital services for a global user base.

• 5+ years of experience with Python web development, especially using FastAPI, Flask, or Django.
• Proven expertise in building data pipelines with Pandas, Numpy, and tools like Airflow or Luigi.
• Strong understanding of microservice architecture patterns, including CQRS, SAGA, and event sourcing.
• Hands-on experience with container orchestration (Docker, Kubernetes) and deploying via CI/CD pipelines.
• Solid Linux sysadmin skills and familiarity with TCP/IP, DNS, firewalls, and networking fundamentals.
• Proficiency with Git, version control strategies, and front-end basics such as HTML, CSS, JavaScript.
• Advanced SQL skills capable of constructing complex queries.
• Experience developing automated unit, integration, and functional tests with a test-driven approach.
• Knowledge of agile and DevSecOps processes, with tools like Jira and Confluence.
• Excellent verbal and written communication skills in English.
• Ability to work efficiently in a fast-paced, team-oriented environment with ownership and continuous learning.

Nice to have:

• Cybersecurity experience including application security testing, penetration testing, or threat detection.
• Cloud platform expertise (AWS, GCP, Azure) with tools like Terraform, Prometheus, or Anthos.
• Frontend development experience with JavaScript frameworks like React.
• Database administration skills with MSSQL, Postgres, or MongoDB.
• Experience with message queues like Kafka or RabbitMQ.

• Collaborate with product owners and cybersecurity experts to design, develop, and deliver scalable Python-based microservices and REST APIs.
• Create and maintain data pipelines, ETL jobs, and automation tools using libraries like Pandas, Numpy, and platforms such as Airflow or Luigi.
• Build, deploy, and operate containerized services using Docker and Kubernetes within CI/CD pipelines with tools like Jenkins or GitLab.
• Support existing services through bug fixing, troubleshooting, and writing automated tests.
• Participate in peer code reviews, contribute to process improvements, and mentor junior developers.
• Integrate cybersecurity tools and automation to enhance vulnerability detection and security measures.

Only candidates with an existing legal right to work in the European Union will be considered for this role.