Senior Director, API & AI Platform (Hybrid/Remote)

babelstreet; Reston (VA); Hybrid; USD 150,000 - 210,000; Full time

Job summary

Babel Street is seeking a Principal Engineer in Reston, VA to lead API and MCP platform strategy and delivery. This hands-on senior role drives semantic API design, MCP integrations, and context-aware service patterns to empower developers and AI agents across Babel Street's services.

You will partner with AI, Data, and Platform teams to ensure APIs are scalable, discoverable, and optimized for agentic workflows while aligning with long-term architectural direction.

Qualifications

• Extensive experience with API-first platforms.
• Experience leading MCP or similar integrations.
• Strong hands-on technical leadership and mentoring skills.

Responsibilities

• Lead API and MCP platform strategy and delivery across teams.
• Define semantic APIs and agent-friendly interfaces.
• Establish patterns for context management and agent workflows.
• Partner with Architecture, AI, Data, and Platform teams to ensure scalable, discoverable APIs.

Skills

API design

MCP integration

Semantic APIs

Agent-ready interfaces

Leadership

Documentation-as-code

Tools

Vertex AI

Job description

Babel Street is seeking a Principal Engineer in Reston, VA to lead API and MCP platform strategy and delivery. This hands-on senior role drives semantic API design, MCP integrations, and context-aware service patterns to empower developers and AI agents across Babel Street's services.

You will partner with AI, Data, and Platform teams to ensure APIs are scalable, discoverable, and optimized for agentic workflows while aligning with long-term architectural direction.