
Senior Full-Stack Engineer (Backend/Data Focus)
SQUARE ONE RESOURCES sp. z o.o.
150 - 180 PLN / HOUR
B2B
Status
Hexjobs Insights
Senior Full-Stack Engineer (Backend/Data Focus) role requiring 5+ years in software engineering. Responsibilities include system design, API development, and technical leadership. B2B contract in Warsaw, with hourly pay 150-180 PLN.
Schlüsselwörter
Python
PostgreSQL
FastAPI
React
Next.js
Docker
Kubernetes
CI/CD
SQLAlchemy
system architecture
Technologies we use
About the project
Your responsibilities
- Own system architecture and backend design decisions
- Design, implement, and maintain data models using PostgreSQL
- Define and implement API layer using FastAPI
- Ensure scalability, performance, and maintainability of services
- Provide technical leadership and structure for the engineering team
- Design service architecture and data flows
- Contribute to frontend development using React / Next.js when required
- Support CI/CD processes and containerized deployments (Docker, Kubernetes)
- Identify technical risks and proactively address them
- Operate with end-to-end ownership across backend and data layers
Our requirements
- 5+ years of experience in software engineering (Senior level)
- Strong expertise in Python
- Advanced knowledge of PostgreSQL (schema design, performance tuning)
- Experience designing scalable system architectures and service-based solutions
- Practical experience with FastAPI and SQLAlchemy
- Solid understanding of React and/or Next.js
- Experience with Docker, Kubernetes, and CI/CD pipelines
- Ability to work independently with minimal supervision
- Experience working in evolving environments and shaping technical direction
- Strong problem-solving skills and proactive risk management
Optional
- Experience with graph-based or adaptive data models
- Familiarity with LLM APIs and GenAI-driven systems 🤖
- Experience using AI-assisted coding tools (e.g., Cursor, Copilot)
- Exposure to modern data-driven or AI-powered platform architectures
This is how we organize our work
This is how we work
Aufrufe: 4
| Veröffentlicht | vor 9 Tagen |
| Läuft ab | in 21 Tagen |
| Art des Vertrags | B2B |
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