Must have

• Python

• REST API

• MongoDB

• DevOps

• Cloud

• FastAPI

• NoSQL

• Data models

• AWS

• AWS S3

• AWS Lambda

• API

• English (B2)

• Polish (C1)

Requirements description

Must-have Requirements

• 5+ years of experience in backend development
• Strong Python experience, including FastAPI and asynchronous programming
• Solid experience designing and implementing REST APIs
• Hands-on experience with MongoDB (Motor, PyMongo, Beanie)
• Experience managing MongoDB Atlas in production
• Knowledge of OAuth2, JWT, and secure API design
• Experience integrating external APIs
• Practical knowledge of AWS services
• Strong coding standards, type safety, and documentation mindse

Nice to Have

• Experience with CI/CD pipelines and automated testing
• Exposure to event-driven or message-based architectures
• Knowledge of monitoring and performance tuning
• Experience in multi-cloud or additional cloud platforms

Offer description

About the Role

We are looking for a Senior Backend Engineer to join an international team responsible for building and maintaining high-performance, cloud-native backend services. This is a senior-level role with a strong focus on Python, asynchronous REST APIs, and MongoDB in production environments.

You will work closely with product teams, data engineers, and DevOps to deliver scalable, secure, and reliable backend solutions running in the cloud.

Your responsibilities

1. Design, develop, and maintain scalable backend services in Python
2. Build asynchronous RESTful APIs with proper validation and error handling (FastAPI)
3. Design and optimize NoSQL data models in MongoDB
4. Work with MongoDB Atlas in production environments
5. Implement secure authentication and authorization (OAuth2, JWT)
6. Integrate backend systems with AWS services (e.g. S3, Lambda, Glue)

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