Senior Backend & AI Engineer

At Cyclad, we work with top international IT companies to help them deliver cutting-edge technologies that shape the future. We are currently looking for an experienced Backend Developer to join an international team delivering modern backend and AI-powered solutions.

In this role, you will develop and maintain scalable backend applications using Python and FastAPI while working with AWS cloud services, ETL pipelines, Docker, and CI/CD practices. You will also contribute to AI/LLM-based applications, including RAG solutions, document analysis platforms, and chat interfaces, while collaborating with an international team to deliver high-quality, production-ready solutions.

Project information:

• Type of project: It services

• Office location: Warszawa, Poland

• Work model: 100% Remote – occasional client office visits expected

• Budget: 100–130 PLN net/hour – B2B

• Project length: Long-term

• Start date: ASAP (depending on the candidate's availability)

• Only candidates from Poland

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

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

Nice to have:

• Experience with Kubernetes and container orchestration

• Knowledge of OpenTelemetry and observability practices

• Experience with OAuth 2.0

• Experience with cloud-native application architectures

• Advanced experience with LLM and RAG-based solutions

• Experience working with AI-powered document processing platforms

Recruitment process:

• Introductory call

• Technical interview

• Final decision