Senior Principal Engineer (API Hub)

Location: Hybrid, Philadelphia, PA, US

Company

World-leading software company providing digital twin solutions for infrastructure professionals in transportation, water, and energy.

What you will do

• Define and own the technical architecture of the developer platform, including the API gateway, authentication, and billing infrastructure.
• Develop and publish global API Design Standards v1 in collaboration with product engineering teams.
• Act as a hands-on technical leader by writing production code and reviewing pull requests.
• Establish IMS OAuth as the standard authentication model across all platform surfaces.
• Integrate AI and MCP surfaces into the platform architecture and taxonomy.
• Partner with the CIO organization on enterprise application and ERP integration.

Requirements

• 12+ years of software engineering experience with significant time spent architecting large-scale systems.
• Proven ability to own comprehensive developer platform architecture from front-end experience to API registry.
• Strong technical expertise in OAuth 2.0, OIDC, and underlying platform security models.
• Hands-on experience engineering distributed systems, event streaming, and usage-based billing pipelines.
• Must be based in or able to work from the Philadelphia, PA office.

Nice to have

• Familiarity with AI/agent integration patterns and MCP.

Culture & Benefits

• Attractive salary and benefits package.
• Commitment to inclusion, belonging, and colleague wellbeing through global initiatives.
• Opportunity to contribute to sustainable and resilient global infrastructure.
• Collaborative team culture within a world-leading software organization.