Senior Python Developer

Exciting projects. Great atmosphere. Personal growth. Merixstudio.

What you'll do:

You'll join our experienced Python Developers and work on designing and implementing backend business logic and exposing it through REST API using Python 3, AWS. You’ll be responsible for the overall project structure/architecture, new features, and integration with front-end frameworks like React or Angular.

Who you are (requirements):

• you have extensive commercial experience in development of web applications using Python (3.10+)

• you are proficient in more than one Python framework (Django, Flask, FastAPI etc.)

• you have practical experience applying Domain-Driven Design and Clean Architecture in production

• you have strong async Python skills: asyncio, async/await, and async testing patterns

• you write fully type-hinted Python as a matter of habit

• you have production experience with MongoDB, including schema design and aggregation pipelines

• you know how to effectively use relational and non-relational databases

• you are able to build modern, secure and efficient APIs

• you have experience with event-driven architectures and Kafka (or comparable streaming platforms)

• you have a disciplined testing practice, including integration tests against real infrastructure

• you are using design patterns and principles of delivering high quality, maintainable and testable code

• you work agentically with AI coding assistants (Claude Code, Cursor, or similar)

• you are proficient in using Docker and docker-compose

• you are familiar with AWS services (EC2, ECS, SQS, S3, Lambda)

• you have experience with CI/CD tools

• you have practical knowledge of using Celery and message brokers (Redis, RabbitMQ)

• you are fluent in both spoken and written English

• you know security issues and know how to ensure application security (OWASP, SAST, Semgrep)

What we'd like to see:

• familiarity with TDD / DDD approach

• experience with WebSocket-based real-time systems

• mentoring skills and experience in onboarding junior/mid developers 

• experience in leading the project as a lead developer

• very good communication skills and proactive attitude in architectural discussions

Additionals:

• one-time home office bonus - 1000 PLN net

• free medical care

• flexible working hours

• 100% remote work or hybrid model: if you want, we have a great office in Poznań!