Staffing Science

Meet the Team!

John Wolff

Founder & CEO

John grew up in Southern California, then attended Arizona State University and since has called Arizona home. John has been in recruiting his entire career and truly loves what he does. He has been a leader in the staffing industry for many years and has experience both in the agency world and has worked as a Head of TA/Recruiting for a high growth startup.  Equipped with a unique background working on both sides, John has placed thousands of people across companies all over the globe. 

John has a knack for technology and people, but his love of dogs in unmatched. If you know John, you’ll probably meet his canine best-friend, because he doesn’t go anywhere without them. When John isn’t helping connect some of the brightest minds in the world of tech, you’ll find him exploring the outdoors, playing with gadgets and cheering on his beloved ASU Sun Devils….even if they’re painful to watch at times 

You can reach John at

Erin Nickel

Co-Founder & Managing Partner

Erin grew up in a small town on the Northern California coast and moved to Phoenix in 2000, where she first joined the recruiting world. Her experience ranges from working with start-ups to Fortune 500 companies in all areas of information technology. Erin is passionate about building relationships and finding the right fit for candidates and clients. 

Although she now resides in the PNW, Erin has stayed close to the Phoenix market and business trends. When she isn’t working, she is spending time with her family, including her fur kids Zeus and Gracie, and trying to convince her husband that two dogs simply aren’t enough.

You can reach Erin at


Kevin Volk

Co-Founder & Managing Partner

Kevin is an Arizona native with 10+ years of IT staffing and sales experience. He has worked in environments ranging from late-stage startups to enterprise SaaS. Kevin’s passion for identifying meaningful work for people has enabled him to place hundreds of IT employees across the U.S. successfully.

Kevin a self-described film buff with a love of 80’s B movies, cooking, and the great outdoors. He spends his free time with his wife, Stephanie, their dog Finn and is soon to be a dad for the first time.

You can reach Kevin at

Andrew Whiteside

Technical Recruiter

Andrew is an Arizona native who received a degree in engineering from the University of Arizona. Although his abilities in engineering helped him win a hackathon, he quickly realized coding wasn’t for him. Andrew found a different way to stay in the tech world when he was recruited into the staffing industry. He has since been a technical recruiter with over three years of experience. Andrew is passionate about helping people discover jobs that fulfill them in every aspect.

Andrew loves the outdoors, live music, traveling, and spending time with his family. (Andrew doesn’t have a dog, but we’re working with him on this.)

You can reach Andrew at

Rigo Alvarado

Technical Recruiter

Rigo is a PNW native who obtained his Bachelor’s Degree in Communication from Eastern Washington University and moved here to Phoenix in 2020. Rigo started his career in the healthcare staffing side of things before finding his passion for doing Technical/IT Recruiting. Rigo was raised by two successful immigrant parents who taught him the value of hard work supersedes all. Rigo’s drive and dedication to helping people ensure the candidates and clients he works with are well taken care of.  

Rigo is a golf enthusiast who spends most of his time outside work either on the golf course or with his French Bulldog, Juice. He also is an avid sports fan and enjoys watching basketball and baseball, Go Mariners and Go Suns.
You can reach Rigo at

Jon Robinson

Technical Recruiter

Jon is a native of the Northeast and after going to school at the University of Connecticut and playing baseball there for 4 years he moved out to Arizona where he has lived ever since.  Jon has been in recruiting for almost 15 years having spent half that time in the IT industry and the other in healthcare.  Jon’s ability to build relationships and value long term trust have been a staple throughout his career.   

When not working you can find him spending time with his wife and 2 girls Charlie and Georgia, on the golf course, or playing with his German Shorthaired Pointer named Bogey.  Jon is an avid sports fan supporting his favorite New England sports teams especially his alma mater UConn.

You can reach Jon at 

Staffing Science in Numbers

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Goal: Your Success