Backend Engineer (Python/FastAPI + AI Automation)

Trymasaj; Poland; On-site; PLN 168,634 - 252,951; Full time

Job summary

A technology company in Poland is seeking an experienced backend developer to design and build robust backend systems and APIs using Python (FastAPI). The ideal candidate will have over 3 years of experience, strong skills in API design, and familiarity with AI automation tools and cloud platforms. This role involves integrating third-party APIs, developing ERP modules, and managing PostgreSQL databases. Competitive compensation and opportunities for collaboration with cross-functional teams are provided.

Qualifications

• 3+ years of experience in backend development with Python/FastAPI.
• Strong understanding of API design and authentication methods.
• Experience in AI automation tools or integrating machine learning models.

Responsibilities

• Design and build backend systems and REST/GraphQL APIs.
• Integrate third-party APIs and automate workflows.
• Develop ERP modules with robust data models.

Skills

Backend development

API design

Authentication (OAuth2, JWT, RBAC)

PostgreSQL

Debugging

Problem-solving

Tools

Docker

FastAPI

CI/CD pipelines

AWS

GCP

Azure

Job description

• Design and build backend systems and REST/GraphQL APIs using Python (FastAPI) .
• Integrate third-party APIs and automate workflows with AI tools , LLMs , and process orchestration platforms (like LangChain , LangGraph , n8n , or Zapier ).
• Develop ERP modules (CRM, Orders, Accounting, Inventory, Reports) with robust data models.
• Implement data pipelines and synchronization layers with reliability and scalability.
• Manage PostgreSQL databases using SQLAlchemy , Prisma , or similar ORM frameworks.
• Optimize system performance, reliability, and security in production environments.
• Use CI/CD pipelines, Docker , and cloud infrastructure ( AWS, GCP, or Azure ) for deployments.
• Collaborate with frontend, operations, and product teams to design integrated solutions.

Requirements

• 3+ years of experience in backend development with Python/FastAPI .
• Strong understanding of API design , authentication (OAuth2, JWT, RBAC) , and webhooks .
• Experience in AI automation tools or integrating machine learning models into backend workflows.
• Proficiency with PostgreSQL , schema design, and query optimization.
• Hands-on experience with Docker , Git , and CI/CD pipelines .
• Familiarity with cloud platforms (AWS/GCP/Azure) and scalable architecture design.
• Excellent debugging, problem-solving, and documentation skills.