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Principal API Architect, Product Engineering – Agent‑Ready APIs

Ireland, Dublin💼 Full-time🗓 2026-09-25

Core

Define and evolve API architecture, standards, and governance for Product Engineering to enable agent-ready, high-quality APIs and scalable backend services.

Role type

Principal API Architect (Strategy & Hands-on IC)

Builds

Agent-ready APIs, scalable backend services, and durable product contracts for Workday's product ecosystem.

Domain

Enterprise SaaS, AI/Agentic workflows, Distributed Systems

Deliverable

production ML models | product features | infrastructure

Required skills

API architecture design, Domain modeling, Object-oriented design, Distributed systems, Cloud architecture, API governance, Observability, Cross-team leadership

Preferred skills

Agentic AI patterns, Data platform integration, Build/borrow/buy strategy, Contract testing, Mentorship

Technologies

Java, TypeScript, Python, REST, GraphQL, SOAP, OpenAPI, Swagger

Responsibilities

Define API architecture and governance model; Partner with leaders to shape operating model and intake processes; Translate product requirements into scalable services; Establish API standards (versioning, auth, error handling); Lead cross-team design reviews; Mentor senior engineers on architecture and integration.

Seniority

Principal, strategy & mentorship

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