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

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Contract Computer Occupations
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Location
Warsaw, Masovian Voivodeship, Poland
Posted
June 03, 2026

Job Description

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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...

    • Job Details

    • Job Type
      Contract
    • Category
      Computer Occupations
    • Date Posted
      June 03, 2026
    • Application Deadline
      July 13, 2026