Senior Python Developer (subcontractor)
Posted
Summary
A senior Python engineer hired as a subcontractor in Warsaw to own the architecture and hands-on build of a data-collection/profiling system: core components and APIs (FastAPI/Django/Flask, PostgreSQL, Celery/RabbitMQ) plus low-level event capture (ETW/PresentMon/DXGI), profiling tools, and a web dashboard for test history and reports.
About the job Senior Python Developer (subcontractor)
Responsibilities
- Own the system architecture: from choosing frameworks and database structures to designing scalable APIs and services
- Take a hands-on role in development: build core components, POCs, and critical modules
- Define and document architectural decisions, patterns, and best practices
- Lead technical discussions and decisions within the team and with stakeholders
- Help the team stay unblocked, productive, and aligned with technical direction
- Review code, guide implementation, and ensure high technical quality across the project
- Collaborate with DevOps and QA to ensure stability, observability, and smooth deployments
- Deep knowledge of core Python and experience in collecting data through accessing hardware
- Low-level event capture (ETW/PresentMon/DXGI) for analyzing latency and present times. Profiler orchestration (OCAT, PresentMon, NVAPI/ADL hooks, Intel GPA/RenderDoc as needed). Reliable logging, result storage, test comparisons, and report generation. Web dashboard with charts and test history.
Requirements
- 5+ years of experience in backend development with Python
- Proven experience as a Solution Architect, Tech Lead, or Senior Backend Engineer
- Deep knowledge of Python frameworks (FastAPI, Django, Flask)
- Strong understanding of:
- microservices architecture
- API design and service boundaries
- data modeling and relational databases (PostgreSQL)
- async programming and queues (e.g., Celery, RabbitMQ)
- Experience designing systems for scalability, fault tolerance, and maintainability
- Comfort working with Linux environments, containers (Docker), Git workflows
- Excellent communication skills and ability to justify architectural decisions
- Very good English language skills, both written and verbal (min. B2)
Preferred Skills
- Experience with Azure DevOps, GitHub Actions, or other CI/CD platforms
- Familiarity with cloud platforms (Azure, AWS, GCP)
- Experience with system monitoring, logging, and performance profiling
- Bonus: exposure to AI/ML integration, vector databases (e.g., Qdrant, Pinecone)