Sigma Software

FinTech

SeniorJavaScript/Node.jsMCPDeveloper(FinTechProject)

Bucharest, Romania FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for mid candidates.

The Brief

“Senior JavaScript/Node. js MCP Developer (FinTech Project) at Sigma Software. Skills: Node. js, JavaScript, MCP, FinTech. Design large-scale software solutions. Implement large-scale software solutions”

Industry & Context.

FinTech

What They're Looking For.

Must Have

Back-end software development, TypeScript, Node. js, AI Agentic systems, MCP integrations, designing distributed and secure systems, Front-end development skills, microservices architectures, designing, building, and maintaining APIs, building and consuming REST and/or GraphQL APIs, DevOps practices, AWS, testing best practices, Upper-Intermediate level of English

Nice to Have

modern JavaScript, ES6 libraries

What You'll Do.

Design large-scale software solutions

Implement large-scale software solutions

Maintain high level of quality

Follow best engineering practices

Play supervisory roles

Promote design patterns

How You'll Work.

Team & Collaboration

collaborative team member; Communicate effectively to collaborate closely with the team

Communication Scope

Communicate effectively

Full Job Description

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. * 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) 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

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