Sr Analyst, HR Data

At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That’s how we’re UNSTOPPABLE for our employees!

This role supports employees and enterprise stakeholders by managing HR data and employee lifecycle programs to ensure data accessibility, integrity, and compliance across Workday HCM and related systems. The Sr Analyst serves as a subject matter expert in HR data administration, providing technical expertise, lifecycle governance, system support, and international data oversight across hire-to-termination processes.

This position requires a highly autonomous self-starter who can ramp quickly, operate independently in a dynamic environment, and mentor others on HR data processes and system functionality. The role partners cross-functionally with HR, Payroll, Compensation, Talent Acquisition, Legal, and business teams to ensure accurate system configuration, large data loads, organizational changes, M&A integrations, and international workforce data compliance.

Success is measured by the accuracy, timeliness, and compliance of domestic and international HR data, the effectiveness of M&A data integration efforts, the quality of system support provided, and the ability to drive informed decision-making through strong data governance and stakeholder engagement.

This is a hybrid role (3 days/week in the office) and will be based in Overland Park, KS.

• Administer and govern HR data within Workday HCM, ensuring accuracy, compliance, and alignment across the full employee lifecycle (hire through termination, including severance processes)
• Support domestic and international employee data management, ensuring compliance with local regulations, statutory requirements, and global data governance standards
• Load and validate mass data files (EIBs and other bulk data uploads), including support for enterprise reorganizations, international updates, and workforce structural changes
• Support M&A activities through data mapping, validation, employee data migration, system alignment, and post-integration data audits
• Partner cross-functionally with HR, Payroll, Compensation, Talent Acquisition, Legal, and business leaders to ensure data accuracy, system integrity, and compliance across global operations
• Provide technical HR system support and resolve complex end-user inquiries across Workday HCM and related platforms
• Advocate for data quality, governance standards, and reporting accuracy to enable informed business decision-making
• Represent HR data and lifecycle processes in enterprise initiatives such as compensation reviews, reorganizations, international expansions, and workforce planning activities
• Support compensation-related data processes and provide insight into compensation structures as needed
• Serve as a subject matter expert on projects by evaluating configurations, conducting user acceptance testing (UAT), validating data outcomes, and recommending improvements
• Participate in HR technology enhancements, system updates, and continuous improvement initiatives
• Mentor team members and stakeholders on Workday data processes, lifecycle governance, and system functionality
• Demonstrate the ability to operate autonomously, ramp quickly, and learn new tools, processes, and technologies independently
• Maintain employee records in accordance with regulatory, international, policy, and audit requirements
• Contribute to process documentation, knowledge sharing, and best practice development

• Bachelor’s Degree plus 3 years of related work experience OR advanced degree with 1 year of related work experience OR combination of education and experience deemed equivalent (Required)

• Strong Workday HCM experience, including implementation and ongoing data management
• Experience managing HR data across the full employee lifecycle
  
  Experience…