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Principal MCP Engineer (FinTech Project)

Sigma Software


Job Location:

Alicante - Spain

Monthly Salary: Not provided by the employer
Posted: 19 August 2026 (8 hours ago)
Application Deadline: 16 November 2026
Vacancies: 1 Vacancy

Job Summary

  • 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/ libraries SDKs starter kits templates and tooling that accelerate adoption across engineering teams
  • Design scalable approaches for conversation state management agent orchestration context handling authentication and versioning
  • Establish architectural guidelines for selecting appropriate integration patterns including MCP A2A APIs and service-to-service communication
  • Collaborate with multiple engineering teams to review technical designs ensure consistency and drive platform adoption
  • Create technical documentation best practices and onboarding materials for developers working with MCP integrations
  • Mentor engineers and provide technical leadership across platform and backend initiatives
  • Contribute to long-term platform scalability maintainability and engineering governance

Qualifications :

  • At least 7 years of production experience with JavaScript TypeScript and
  • Extensive experience in Back-End or platform engineering including technical leadership at Principal or Staff level
  • Proven expertise in designing distributed systems APIs SDKs developer platforms or Back-End frameworks
  • Deep understanding of scalable architecture design interface contracts versioning strategies and reusable platform components
  • Hands-on experience with MCP clients servers resources tools and LLM tool invocation patterns
  • Experience building AI-enabled platforms or LLM-based integrations
  • Knowledge of Developer Experience best practices and internal platform engineering
  • Experience driving technical initiatives across multiple engineering teams and stakeholders
  • Experience defining enterprise engineering standards and governance models
  • Ability to balance strategic architectural thinking with hands-on implementation
  • Experience working in cloud-native and microservice-based environments
  • At least an Upper-Intermediate level of English

WILL BE A PLUS

  • Experience with Agent-to-Agent communication and orchestration frameworks
  • Familiarity with FinTech or regulated environments
  • Experience designing reusable SDKs or integration frameworks

Additional Information :

PERSONAL PROFILE

  • Strong technical leadership and ownership mindset
  • Excellent collaboration and cross-team communication skills
  • Ability to drive engineering alignment in complex organizations
  • Proactive problem solver with strategic thinking capabilities
  • Passion for platform engineering developer enablement and scalable architecture
  • Comfortable operating in fast-paced and evolving technical environments

Remote Work :

No


Employment Type :

Full-time


About Company

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At Sigma Software, we are involved with the client’s team to contribute to the design and development of a technical solution for their tokenized domain reservation platform. We started by assigning a software architect to design the smart contracts and integrate blockchain into the s ... View more

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