- Full-time

Company Description
In this role, you will combine hands-on Back-End engineering, platform architecture, and technical leadership to help multiple product teams adopt consistent MCP integration patterns. You will work with TypeScript, Node.js, distributed systems, and modern AI orchestration approaches while shaping internal engineering standards and developer experience practices.
We at Sigma Software offer the opportunity to work on cutting-edge AI-enabled platform initiatives in a collaborative international environment where your technical decisions will directly influence large-scale engineering adoption and long-term platform strategy.
CUSTOMER
Our Customer is one of Europe’s fastest-growing FinTech companies, delivering a comprehensive financial infrastructure platform for businesses. The company provides embedded financial services, including virtual cards, bank transfers, account management, and payment operations through scalable APIs and modern financial technology solutions. Operating in a high-scale and rapidly evolving environment,



the Customer places strong emphasis on engineering excellence, platform scalability, and architectural consistency.
PROJECT
The project focuses on building the engineering foundations for enterprise-wide MCP adoption across multiple product teams. The goal is to establish shared architecture standards, reusable TypeScript/Node.js libraries, SDKs, templates, and development practices that enable teams to build scalable MCP-compatible integrations consistently.
Job Description
- Design and implement core MCP platform capabilities, including MCP clients, servers, tool invocation workflows, and integrations with existing backend services
- Define reusable reference architectures, engineering standards, and development patterns for MCP-compatible systems
- Build shared TypeScript/Node.js libraries, SDKs, starter kits, templates, and tooling that accelerate adoption across engineering teams
- Design scalable approache

📌 Principal JavaScript/Node.js MCP Engineer (Alicante (Alacant))
🏢 Sigma Software
📍 Alicante (Alacant)