We're powering the growth of merchants by helping them take payments easily, securely and globally.
Senior Backend Engineer, Python – Core Gateway
Location
Poland
Posted
3 days ago
Salary
0
Seniority
Senior
Job Description
Senior Backend Engineer, Python – Core Gateway
payabl.
• Support and extend the existing Perl-based payment gateway debugging production issues and adding features while migration is ongoing • Design, develop, and maintain modern server-side components in Python, ensuring high performance and scalability • Integrate third-party APIs and external payment services into both legacy and modern platform layers • Collaborate with multiple stakeholders across departments working in agile sprints • Maintain high code quality standards and contribute to a culture of continuous improvement • Work closely with DevOps on CI/CD pipelines, containerization, and cloud deployments
Job Requirements
- 5+ years of backend engineering experience with strong Python mastery (AsyncIO and FastAPI preferred)
- Experience with Perl (or eagerness to learn and work within Perl production code)
- Solid experience integrating third-party APIs and understanding of webhooks, callbacks, and retry policies
- Experience with CI/CD pipelines (GitLab preferred), Docker containerization, and familiarity with AWS (Lambda, cloud services)
- Exposure to event-driven architectures (Kafka, message queues, etc.)
- Advocate for clean code and able to explain the reasoning behind every line shipped
- Interested in how a product works for the end-user and the business
- Strong English communication skills—both written and verbal
Benefits
- Annual Learning Budget for professional development (eligible after probation)
- Company celebrations
- Opportunities to participate in international company events and initiatives
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