Senior Backend AI Engineer: FastAPI & LLM Pipelines

Newcode.ai; Warszawa; On-site; PLN 120,000 - 150,000; Full time

Benefits offered by this job

Driver of innovation

Collaborative team environment

Flexible work culture

Job summary

Newcode.ai in Warsaw, Poland, is looking for a skilled backend developer to lead API and service design for AI tools in legal and professional services. The ideal candidate possesses at least seven years of experience in backend systems, familiarity with AI coding tools, and a deep understanding of data security.

Join a dynamic and innovative team where you will contribute to building production-scale AI systems while navigating an exciting startup environment with a flexible, English-speaking culture.

Qualifications

• At least seven years building backend systems that run in production.
• Experience with real LLM-powered systems or knowledge of potential failures.
• Familiarity with AI coding tools like Claude Code, Cursor, and Copilot.

Responsibilities

• Design and build the APIs and services for the products.
• Develop the AI plumbing including retrieval and orchestration.
• Ensure reliability of async and distributed work.
• Integrate with existing client systems efficiently.
• Maintain high data security standards.

Skills

Backend system building

AI system integration

Data security

Using AI coding tools

Tools

Python

FastAPI

PostgreSQL/SQL

Redis

Job description

Newcode.ai in Warsaw, Poland, is looking for a skilled backend developer to lead API and service design for AI tools in legal and professional services. The ideal candidate possesses at least seven years of experience in backend systems, familiarity with AI coding tools, and a deep understanding of data security.

Join a dynamic and innovative team where you will contribute to building production-scale AI systems while navigating an exciting startup environment with a flexible, English-speaking culture.