← Back to job listings

Principal JavaScript/Node.js MCP Engineer (FinTech Project)
Sigma Software · Bucharest, Romania
About The Role
- 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 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
- At least 7 years of production experience with JavaScript, TypeScript, and Node.js
- 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
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
Similar roles you might like
See all →F
Senior Security Operations Analyst
fintechos
Salary not disclosedPosted today
F
Salesforce DevOps Evangelist (Romania)
Flosum
Salary not disclosedPosted today
R(
Site Quality Head
RO03 (FCRS = RO003) Novartis Pharmaceuticals S.R.L
541320Posted today
BR
Responsible Person (GDP) & Quality Assurance Specialist - All genders
Biocodex Romania
Salary not disclosedPosted today
IS
Senior Quality Assurance Engineer
Ingenuity Systems S.R.L.
Salary not disclosedPosted today
2I
Study Start Up Associate II
290 ICR Romania - ROM
Salary not disclosedPosted today
5M
Logistics Invoicing Trainee
517 Michelin Romania
Salary not disclosedPosted today
HD
Strategic Finance Director
Hadley Designs
Salary not disclosedPosted today
This is an external listing. JobSpring does not represent or verify the employer. Report this listing
