• Define and design Workday HCM architecture for new implementations, enhancements, and integrations. • Provide detailed, accurate estimates for development, configuration, and integration work; advise on resource planning and timelines. • Oversee technical design sessions, validate configurations, and ensure adherence to best practices. • Collaborate with integration teams to design secure, scalable interfaces between Workday and external systems (payroll, benefits, finance). • Guide functional teams on Workday configuration for Core HCM, Compensation, Benefits, Absence, and other modules. • Ensure solutions meet performance benchmarks and compliance requirements. • Produce architecture diagrams, technical specifications, and solution blueprints. • Partner with HR, Finance, and IT leadership to align solutions with business goals. • Enforce Workday security, data privacy, and compliance standards. • Coach junior Workday developers and analysts.