About the Position

We are seeking an AI Backend Engineer (Python / Node.js) to join our team in Europe. This role is fully remote.

Responsibilities

Maintain and stabilize the existing Node.js conversational backend (bug fixes, minor enhancements, testing, reliability, cautious change management)
Ensure continuous operation of production services and timely resolution of maintenance issues with no regressions
Work with a short-term Node.js maintenance focus and transition mid- to long-term to full-time Python/AI development
Develop and extend a Python-based conversational AI orchestration layer (LangChain / LangGraph)
Implement LLM orchestration pipelines including prompt engineering, API integration, hallucination handling, error handling, and fallback strategies
Participate in architecture discussions and the migration from Node.js to a Python/Kotlin stack
Integrate and collaborate with Kotlin backend services and engineers
Create and maintain automated tests, technical documentation, and CI/CD pipelines
Collaborate closely with a cross-functional product team (frontend, Kotlin, business, design)

Professional experience maintaining Node.js backends in production environments (Express/Koa-style)
Professional Python experience
Practical experience with LLMs, LangChain, and prompt engineering
Proven handling of LLM-specific challenges (e.g. hallucinations, prompt iteration, reliability)
Experience with automated testing (Jest/Mocha, pytest) and CI/CD pipelines
Familiarity with Kotlin backend ecosystems and service integration
Experience with Git / version control
Familiarity with Docker, cloud platforms (AWS, Azure, GCP), and Databases (PostgreSQL, MongoDB, Redis)
Solid understanding of API design
JWT/OAuth2 knowledge is an advantage

The Workly s.r.o.

4D CENTER, Kodaňská 1441/46,

101 00, Praha 10.

Our team will review your application within the next 5 days.