Senior JavaScript/Node.js MCP Developer (FinTech Project)
Sigma Software
This is a senior engineering role, which means you'll be building real systems and mentoring other developers. If you're a recent grad with strong fundamentals and want to move into a leadership position quickly, this fast-tracks that path by pairing you with experienced engineers who will push your growth.
You'll design and implement large-scale software solutions using Node.js, React, TypeScript, and AWS. You'll work on distributed systems, APIs (REST and GraphQL), and emerging AI integration using MCP protocols. Beyond coding, you'll review work, guide less-experienced engineers, and shape how the team approaches clean code and engineering practices.
You need at least 5 years of back-end development experience, 4+ years with Node.js, and 3+ years of TypeScript. Strong DevOps and AWS knowledge is required. Front-end skills, microservices architecture, and testing best practices round out what Sigma is looking for. Experience with AI agentic systems and MCP is a plus.
Ready to apply. Submit your resume, portfolio, and a note about your Node.js or TypeScript projects on CareerJumpShip. Sigma will review and reach out if there's a fit.
About this 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 Experience with Experience AI Agentic systems and MCP (Model Context Protocol) 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 We are seeking a highly skilled Node.js expert, who excels as a collaborative team member. The role goes beyond coding, encompassing responsibilities such as handling feature aspects, specifications, technical design, development, testing, documentation, and maintenance. CUSTOMER Our client has rapidly become one of Europe’s most swiftly expanding FinTech companies. They oversee all aspects of financial operations, from generating virtual cards to facilitating wire transfers and maintaining customer account balances. As a payment institution, our client provides a platform that integrates financial services into its product, offering features such as account management, card payments, bank transfers, and additional services. Originally posted on Himalayas
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