Senior Fullstack Engineer (Node.js, React, AI)

Experis

📍 Warsaw, Masovian Voivodeship, Poland 💼 Contract 🕒 Posted February 24, 2026

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Job Description

header-funct-public
100% remote
B2B: 180-210 PLN/h netto + VAT



Responsibilities:
Build and evolve a backend-heavy full stack architecture for an AI-native enterprise SaaS product. 
Design and deploy scalable services on Google Cloud Platform (GCP), including Cloud Run, BigQuery, and GCS. 
Develop responsive and modular interfaces using React, TailwindCSS, and Zustand. 
Implement micro-frontends, Module Federation, robust APIs, and secure authentication flows (OAuth2, SSO). 
Work with Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), and autonomous AI agents to power intelligent workflows. 
Ensure fault tolerance, observability, and performance through CI/CD pipelines and infrastructure automation. 
Partner with product, design, and infrastructure teams to shape roadmap and delivery. 
Foster a strong engineering culture and mentor junior deve...
            

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Job Details

Location Warsaw, Masovian Voivodeship
Job Type Contract
Category Computer Occupations
Posted Date February 24, 2026
Application Deadline April 05, 2026