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Senior JavaScript/Node.js MCP Developer (FinTech Project)

Company

Sigma Software

Location

Warsaw, Masovian Voivodeship

Posted

June 03, 2026

Position Overview

Job Description

  • Design and implement large-scale software solutions and components using multiple technologies, with a primary focus on Node.js and ReactJS 
  • Maintain a consistently high level of quality throughout all stages of the development 
  • Communicate effectively to collaborate closely with the team and gain full context for complex tasks 
  • Follow the best engineering practices, as well as company and client guidelines 
  • Play supervisory, advisory, and coaching roles for less-experienced engineers on the team 
  • Promote clean code, as well as design patterns and principles 

Qualifications

  • Over 5 years of experience in Back-end software development  
  • At least 3 years of experience with TypeScript 
  • Over 4 years of experience working with Node.js 
  • Experience with AI Agentic systems and MCP (Model Context Protocol) integ...

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