Remote Fullstack AI Systems Engineer — Multi-Agent & RAG Pipelines

Zoho; Polska; Hybrid; PLN 180,000 - 280,000; Full time

Job summary

Ayrin Digital is hiring a Fullstack Software Engineer with deep experience building AI-powered products in production. This is a remote position where you own features end-to-end—from UI (React/Next.js) to API design (Node.js/NestJS) and cloud deployment—delivering reliable, scalable solutions.

You will shape AI features from concept to production, ensuring performance and cost efficiency. Work spans frontend, backend, data, and cloud infra; you will partner with Product Owners and

Qualifications

• 3-5+ years building production apps with React/Next.js, Node.js/NestJS, and PostgreSQL.
• Hands-on with at least one AI SDK (Vercel) or LangChain/LangGraph or CrewAI.
• Proven track record designing, orchestrating, and deploying multi-agent AI systems.
• Experience with vector databases and RAG pipeline design.
• Strong understanding of cloud deployment across AWS, GCP, or Azure.
• Prompt engineering, model selection, and evaluation.

Responsibilities

• Fullstack Product Development: own features end-to-end from UI through API to cloud deployment.
• Collaborate with Product Owners to translate requirements into shipped solutions.
• Design and build scalable AI-enabled features with reliability and cost awareness.
• Design multi-agent AI systems and RAG pipelines; deploy production-grade workflows.
• Ensure performance, latency, and system reliability across cloud platforms.

Skills

React/Next.js

Node.js/NestJS

PostgreSQL

Multi-agent AI

Prompt engineering

Cloud platforms

LangChain

LangGraph

CrewAI

Vector DBs

Tools

Vercel AI SDK

LangGraph

LangChain

CrewAI

Pinecone

Weaviate

pgvector

Job description

Ayrin Digital is hiring a Fullstack Software Engineer with deep experience building AI-powered products in production. This is a remote position where you own features end-to-end—from UI (React/Next.js) to API design (Node.js/NestJS) and cloud deployment—delivering reliable, scalable solutions.

You will shape AI features from concept to production, ensuring performance and cost efficiency. Work spans frontend, backend, data, and cloud infra; you will partner with Product Owners and