This is a remote position. We are seeking a

Senior AI Engineer

with a strong background in

Node.js

and hands-on experience integrating

AI and LLM-based solutions

into scalable backend architectures. This is not a traditional data scientist role — we’re looking for an experienced software engineer who understands both

backend system design

and how to leverage modern

AI tools

such as

LangGraph

,

LangChain

, and

Vector Databases

. ###

Key Responsibilities

• Architect and implement backend services for

AI-powered systems and tools

• -
• Build intelligent agents and automation workflows using

LangGraph

or

LangChain

• Connect and operate

Vector Databases

(e.g., Pinecone, Weaviate, Chroma) - Lead and maintain

Node.js-based backend architectures

• Design and optimize

prompt workflows

• for AI integration - Integrate external APIs and third-party AI services (OpenAI, Anthropic, etc.) -
• Collaborate with frontend developers and product stakeholders to deliver seamless solutions ### Requirements ### - Minimum

4 years of software development

experience (Node.js preferred) - At least

2 years of experience

working with

AI/LLM applications

• -
• Hands-on experience with

LangChain

,

LangGraph

, or similar frameworks - Solid knowledge of

vector databases

and

retrieval-augmented generation

• pipelines -
• Strong background in

API design

,

prompt engineering

, and deployment best practices - Proficiency in both

Node.js

and

Python

• Fluent in

Polish

and

English

(C1 level) ###

Nice to Have

• -
• Experience building

AI co-pilots

, chatbots, or

conversational AI tools

• Working knowledge of

React

or

Next.js

for integrating backend and UI - Familiarity with

LLM providers

such as

OpenAI

,

Anthropic

, or

Gemini

• ### Benefits - Solid, competitive salary.
• - Work in multilingual, multinational and multicultural environment on international projects - Medical care