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

Sigma Software · Kraków, Lesser Poland Voivodeship, Poland

ExclusiveRemoteFull-timeSeniorPublished Jun 8, 2026

Apply directly on Sigma Software’s careers site — no account needed.

About the role

  • 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
  • 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
  • Practical understanding of MCP architecture and agentic system design
  • Experience with security aspects of AI Agentic systems and MCP integrations
  • Strong experience in designing distributed and secure systems
  • Good Front-end development skills
  • Good understanding of microservices architectures
  • Experience in designing, building, and maintaining APIs
  • Experience in building and consuming REST and/or GraphQL APIs
  • Familiarity with DevOps practices
  • Strong experience working with AWS
  • Good knowledge of testing best practices
  • At least an Upper-Intermediate level of English

WOULD BE A PLUS

  • Experience with modern JavaScript and ES6 libraries

Skills

  • JavaScript
  • TypeScript
  • Node.js
  • React
  • REST
  • GraphQL
  • AWS
  • Docker
  • Kubernetes
  • SQL

Never be applicant #200 again

Every job here is indexed straight from company career pages — often hours after it opens, before it reaches the big boards. Create a free account and get your best matches in a twice-daily digest.

  • Your best matches, twice a day
  • No duplicates, no ghost jobs, no recruiter spam
  • Every job free to browse — pay only when you apply
Get my matched jobs

Free account — no card required

93 160 live jobs · 17 643 companies tracked · 6 161 added today

Similar jobs

Senior JavaScript/Node.js MCP Developer (FinTech Project) — Sigma Software · Real Job Offers