Senior Backend & AI Engineer

your Jared; Warszawa; Hybrid; PLN 138,000 - 179,000; Full time

Job summary

your Jared is seeking an experienced Backend Developer to join an international team delivering modern backend and AI-powered solutions. You will develop scalable backend applications using Python and FastAPI while working with AWS cloud services, ETL pipelines, Docker, and CI/CD practices.

You will contribute to AI/LLM-based applications, including RAG solutions and document analysis platforms, collaborating with an international team to deliver production-grade solutions and high-quality

Qualifications

• Strong Python software engineering experience.
• Hands-on FastAPI and backend development experience.
• REST API design and implementation.
• Understanding of backend application development and service integration.
• Experience with API-driven architectures.
• ETL pipelines design and implementation.
• Data processing and transformation.
• Knowledge of PostgreSQL or similar relational databases.
• Docker and containerized application development.
• AWS cloud services: Glue, Batch, ECS, S3, ECR.
• CI/CD and modern DevOps practices.
• Production-grade applications experience.
• Experience with AI/LLM projects and RAG-based applications.
• Cloud-native architectures understanding.
• Excellent English communication.
• Ability to work independently and in international teams.

Responsibilities

• Develop production-grade backend applications using Python.
• Design and implement REST APIs with FastAPI.
• Build scalable backend services and API-driven architectures.
• Integrate backend with external services and APIs.
• Design and implement ETL pipelines for data processing.
• Work with PostgreSQL and relational databases.
• Apply data modeling fundamentals to support backend solutions.
• Develop and maintain containerized applications with Docker.
• Work with AWS Glue, Batch, ECS, S3, and ECR.
• Implement and maintain CI/CD pipelines and modern DevOps practices.
• Contribute to cloud-native backend architectures and scalable solutions.
• Develop AI/LLM-based applications and services.
• Collaborate with global team members and stakeholders.
• Manage code with Git and participate in code reviews.

Skills

Python

FastAPI

REST APIs

PostgreSQL

Docker

AWS

CI/CD

English

Teamwork

Tools

Git

Kubernetes

OpenTelemetry

OAuth 2.0

CI/CD tooling

Job description

Senior Remote

Warsaw, Poland

We are 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
• Work model: 100% remote; occasional client office visits expected
• Budget: 100-130 PLN net/hour on B2B
• Project length: Long-term
• Start date: ASAP, depending on candidate availability
• Only candidates from Poland

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 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