Senior Software Engineer II (Python, Payments)

SpotOn is a company focused on providing technology solutions for independent restaurants, including an award-winning point-of-sale system and AI-powered profit tools. The company has been recognized as the #1 Restaurant POS by G2 (Fall 2025) and top-rated by Capterra users, and has received awards such as Great Places to Work and Built In’s Best Workplaces.

• 5–7 years building production systems, with at least 3 years working deeply in Python.
• Proficient in Python and at least one modern framework (Django, FastAPI, or Flask).
• Experience building and consuming APIs, understanding system communication, failure, and scaling.
• Comfortable with both SQL and NoSQL databases, able to analyze data and write efficient queries.
• Write clean, maintainable code applying solid engineering principles and design patterns.
• Use AI tools as part of daily workflow to improve speed, problem-solving, and code quality.
• Familiar with modern infrastructure and deployment practices including AWS, Kubernetes, and Terraform.
• Solid command of English (minimum B2) and willingness to work in a hybrid setup at Kraków or Gdańsk offices 2–3 times per week.

• 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.