Tammy Castro

Co-Founder, CEO, Sr. HRIS Strategic Advisor

With 20+ years of experience as a Sr. HCM Consultant, Tammy has a strong leadership reputation in Oracle’s JD Edwards HCM community. With a gift for networking and relationship building, she keeps a thumb on the pulse of latest HCM advancements. Her expertise led her to launch a world-class HCM technology company to raise up the next generation of JDE HCM Consultants. As founder and CEO of iAM HCM Consulting, Tammy has a passion for people and empowering them to reach their full potential. When she is not forging a new HCM path, she serves with local outreach partners, explores new places with her husband, and loves being outdoors.

Santiago Castro


As iAM’s Chief Technology Officer, Santi is a critical player in the backdrop of the consulting landscape. He handles all of the technology and research requirements for the iAM’s growth and expansion of our client base. He also keeps our consultants on the cutting edge of technology, allowing them to serve our clients with excellence. As a Fam, we say CTO stands for “Chief Tammy Officer,” as we depend on Santi to keep Tammy sane! Lastly, as a member of iAM’s Advisory Board, Santi provides valuable guidance in the strategic planning of iAM’s future endeavors. Santi is an avid reader, an Apple enthusiast, and an amazing chef.

Deanna Johnston

VP of Operations

Deanna has a passion for problem-solving mystery JD Edwards HCM bugs and implementing solutions that make the software work as designed, creating happy clients. One of the highlights of her role is collaborating with end-users to train and empower them to confidently utilize their HCM systems. From leading teams as a Project Manager, to creating thorough training documentation, to investigating Payroll issues, Deanna is always ready to tackle the toughest challenges to help your team succeed. Deanna also helps teach at iAM University and manages iAM’s social media. She loves playing video games, volunteering at church, and traveling with her husband.