Sigma Software

FinTech

SeniorJavaScript/Node.jsMCPDeveloper(FinTechProject)

€160–240k ~AI est. Bucharest, 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, FinTech, System design. Handle feature aspects. Handle specifications”

Industry & Context.

FinTech

What They're Looking For.

Must Have

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

Nice to Have

Experience with modern JavaScript, Experience with ES6 libraries

What You'll Do.

Handle feature aspects

Handle specifications

Handle technical design

Design large-scale software solutions

Implement large-scale software solutions

Design software components

Implement software components

Maintain high level of quality

Follow best engineering practices

Follow company guidelines

Follow client guidelines

Play supervisory roles

Promote design patterns

Promote design principles

How You'll Work.

Team & Collaboration

Collaborative team member; Collaborate closely with team

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 * 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

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