Apply now

Senior Backend & AI Engineer

Cyclad Show all offers

100 - 130 PLN

B2B

Senior

Warszawa

Expires Oct 9, 2026

9 days ago

In short

Senior Backend & AI Engineer role in Warszawa. Responsibilities include developing backend applications, REST APIs, ETL pipelines, and AI/LLM-based services. Requires strong Python, FastAPI, PostgreSQL, Docker, and AWS experience. Offers B2B contract, full-time employment, and hourly rate of 100-130 PLN.

Keywords

Python FastAPI REST APIs ETL PostgreSQL Docker AWS CI/CD AI/LLM Cloud-Native

AI-written summary based on the listing content.

Technologies we use

About the project

This is how we organize our work

This is how we work

Your responsibilities

Develop and maintain production-grade backend applications using Python
Design and implement REST APIs using FastAPI
Build scalable backend services and API-driven architectures
Integrate backend applications with external services and APIs
Design and implement ETL pipelines for data processing and transformation
Work with PostgreSQL and relational databases
Apply data modeling fundamentals to support backend and data solutions
Develop and maintain containerized applications using Docker
Work with AWS services including AWS Glue, AWS Batch, Amazon ECS, Amazon S3, and Amazon ECR
Implement and maintain CI/CD pipelines and follow modern development practices
Contribute to cloud-native backend architectures and scalable solutions
Develop and maintain AI/LLM-based applications and services
Work with LLM and RAG-based applications, document analysis platforms, and chat interfaces
Troubleshoot, optimize, and enhance application performance
Collaborate with developers, data engineers, architects, and business stakeholders
Manage code using Git and participate in code reviews

Our requirements

Strong professional experience in Python software engineering
Strong hands-on experience with FastAPI and backend development
Experience with REST API design and implementation
Good understanding of backend application development and service integration
Experience working with API-driven architectures
Hands-on experience designing and implementing ETL pipelines
Experience with data processing and transformation
Good knowledge of PostgreSQL or similar relational databases
Understanding of data modeling fundamentals
Experience with Docker and containerized application development
Good knowledge of AWS cloud services, particularly AWS Glue, AWS Batch, Amazon ECS, Amazon S3, and Amazon ECR
Experience with CI/CD and modern DevOps practices
Experience developing and maintaining production-grade applications
Practical experience working on AI/LLM projects
Experience with LLM/RAG-based applications, document analysis, or chat interfaces
Understanding of cloud-native architectures
Excellent communication skills in English
Ability to work independently and collaboratively in an international environment