Gartner Expert

John Kostoulas

VP Analyst

John Kostoulas is a Vice President Analyst focused on HR technologies and services.

John supports HR, IT and other business leaders on HR technology strategies and decisions related to important priorities such as employee experience, DEI, business and talent agility and the future of work. He also advises HCM technology and service providers of various sizes, from startup to established, on market trends and product strategies / roadmaps. Finally, John conducts research and advisory around emerging HR technologies and trends.

John is the former co-leader of the Software Market Community, a group of 30+ software market analysts, and has coordinated regular meetings and focused research initiatives on emerging technologies and market trends.

Previous experience

Before joining Gartner, John had 16 years of holistic experience and a solid track record in human capital technology and transformation from the perspectives of consulting and service providers, software vendors and large corporates. He has led numerous global-scale initiatives for world-class organizations on global implementation of leading technology solutions including: change management, technology operations and adoption, global service delivery/process/metrics design, global shared services/BPO business case creation/setup/transition, and organizational design of various functions.

Professional background


Principal Manager, Global HR Systems Architecture and Operations

Coca-Cola HBC

Group HR Business Process Leader


Senior HCM Sales Consultant

Areas of coverage

Product and Services Strategy for Tech CEOs

HCM Technology Transformation

CIO Leadership of Culture and People

Marketing and Sales Execution for Tech CEOs

Product/Service Discovery and Validation


Leadership Decision Making, John F. Kennedy School of Government, Harvard University

Master of Business Administration, Schulich School of Business, York University

Diploma in Production Engineering and Management, Technical University of Crete

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Top Issues That I Help Clients Address

1End-user clients: Advice on HCM software - technology strategy, trends, vendors, value drivers, business case

2HCM technology providers and Payroll BPO providers: Market trends, product strategy and roadmap

3Diversity and inclusion: Why it matters, how technologies can help

4Employee Experience: Strategies for technology prioritization and orchestration

5Advice on Payroll BPO and HR uses of RPA/Hyperautomation - strategies, trends, providers, value drivers, business case