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November 3, 2026

Senior Full-Stack Developer

Senior • Remote

110 - 130 PLN/yr

Warsaw, Poland

Quick Facts

  • Role: Senior Full-Stack Engineer (Next.js, Python & GenAI)

  • Focus: End-to-end feature ownership across frontend, backend, event-driven systems, and GCP

Description

We are looking for a Senior Full-Stack Engineer to own features end to end, from implementation and testing to production. You will work across frontend, backend, event-driven systems, and GCP, while defining frontend standards and integrating GenAI capabilities.

Responsibilities

  • Own features end to end: implementation, testing, and production

  • Work across frontend, backend, event-driven systems, and GCP

  • Define frontend standards and integrate GenAI capabilities

Requirements

  • 5+ years of full-stack development experience

  • Strong React, Next.js, TypeScript, MUI, and TanStack Query skills

  • Experience with data visualisation, including charts, dashboards, and 3D

  • Production experience building Python APIs (FastAPI or similar)

  • Knowledge of event-driven systems, message queues, SSE, and WebSockets

  • Experience building GenAI integrations and agentic workflows using Google ADK, LangChain, or similar frameworks, including streaming results to the UI

  • Familiarity with observability: logging, metrics, tracing, and frontend monitoring

  • Strong ownership, problem-solving, and communication skills

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