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Senior Python Engineer
We’re looking for a
Senior Backend Engineer (Python / FastAPI) to design and build scalable backend services using FastAPI and async Python.
You’ll work on
high-performance APIs, cloud-native systems, and data-heavy applications, with ownership over architecture decisions and production reliability.
Tech Stack
Backend: Python, FastAPI, Flask
Data: PostgreSQL
Infra: Docker, CI/CD, Cloud (Azure preferred)
Other: REST APIs, async processing
What You’ll Do
- Design and build scalable backend services using FastAPI and async Python
- Define API architecture, data models, and service boundaries
- Optimize performance across APIs, databases, and async workloads
- Implement secure authentication (OAuth2, JWT) and data protection best practices
- Design and tune PostgreSQL schemas, queries, and connection strategies
- Containerize and deploy services using Docker and cloud infrastructure (Azure preferred)
- Build and maintain CI/CD pipelines for reliable delivery
- Integrate external services (including AI/ML APIs where relevant)
- Work closely with frontend, data, and product teams on end-to-end solutions
What We’re Looking For
- 5+ years of experience building backend systems with Python
- Strong expertise in FastAPI and async programming
- Solid understanding of API design, system architecture, and scalability
- Experience with PostgreSQL and performance optimization
- Hands-on experience with cloud environments (Azure, AWS, or GCP)
- Experience with Docker, microservices, and CI/CD pipelines
- Ability to make pragmatic technical decisions and own solutions end-to-end
Nice to Have
- Experience integrating AI/ML or LLM-based services
- Familiarity with event-driven systems or message queues
- Experience with observability (logging, monitoring, tracing)
What do we offer you?
- Attractive salary
- Large freedom and real influence
- No unhealthy competition, team approach to meeting challenges
- Remote-first, flexible working culture
- Company apartments in cool cities across Europe: work and enjoy a memorable getaway
About Us
We are a software house with 18 years of experience and a global portfolio of projects. We help businesses modernize, scale, and innovate through custom software solutions. Our team embraces unconventional ideas and new technologies, delivering solutions with real impact. If you value professionalism, creativity, and a strong engineering culture, you'll feel at home here.
join our team: Apply Now!
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Senior Python Engineer
Kraków, Office or Remote
4,300€ - 10,000€ / month (B2B)
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