Senior Software Engineer II (Python, Payments)

Our requirements

• 5–7 years building production systems, with at least 3 years working deeply in Python.
• Proficiency in Python and at least one modern framework (Django, FastAPI, or Flask).
• Experience building and consuming APIs, and understanding how systems communicate, fail, and scale in real-world environments.
• Experience with both SQL and NoSQL databases, including analyzing data and writing efficient queries.
• Clean, maintainable code writing, and consistent application of engineering principles and design patterns.
• Familiarity with modern infrastructure and deployment practices, including AWS, Kubernetes, and Terraform.
• Solid command of English (min. B2).
• Willingness to work in a hybrid setup, coming into the Kraków or Gdańsk office 2–3 times per week.

Optional

• Familiarity with Kotlin, React (TypeScript), Python (Django), Go, PostgreSQL, Docker, GitHub Actions.
• Experience in Fintech, Merchant Services, Point of Sale (POS), payment processing, or SaaS hospitality platforms.

Your responsibilities

• Own backend systems end-to-end—from design and implementation to deployment and monitoring.
• Build, improve, and maintain services to support real-world transaction flows with a focus on reliability and performance.
• Design and evolve APIs, ensuring they are scalable, resilient, and easy to integrate with.
• Collaborate with engineers and stakeholders to define solutions, address system limitations, and make sound technical decisions.
• Identify and resolve performance bottlenecks, bugs, and edge cases in production environments.
• Participate in code reviews, mentor engineers, and raise the bar on code quality and best practices.
• Proactively identify technical debt and drive improvements before they become blockers.

About the project

This is how we organize our work

This is how we work on a project

• Clean Code
• code review
• design patterns
• integration tests
• testing environments

What we offer

• Competitive pay
• Training budget of 3500 PLN gross per year
• Group English classes with a native speaker
• New, modern, bright and comfortable office space in the city centre
• Relocation Package within Poland
• New Macbook Pro, 4K monitors or other needed tools

Development opportunities we offer

• development budget
• external training
• industry-specific e-learning platforms
• mentoring
• space for experimenting

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of professional training & courses
• fruits
• integration events
• corporate library
• drinks
• leisure zone
• meal passes
• employee referral program

Recruitment stages

• 1.
  Not specified

SPOTON POLAND SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ