Leo Sheridan, CEO & President

Leo Sheridan is chief executive officer and president of the Advanced Group, a staffing and outsourcing solutions provider with offices across the U.S. In 1988, Sheridan founded Advanced Resources, and as the firm quickly expanded, he added additional businesses to create the Advanced Group. Today, the Advanced Group includes Advanced Resources, Advanced Clinical, the WunderLand Group, and Advanced RPO. 

Leo earned a Bachelor of Science degree in business administration from St. Michael’s College in Vermont. He completed the Executive Management Program at Northwestern University’s Kellogg School of Management. He has provided leadership to a variety of professional organizations, including TechServe Alliance, American Staffing Association, and Young Presidents’ Organization. He serves on the Board of Directors for Cristo Rey Network and the Board of Trustees for Robert Morris University.

Jim Johnson, Chief Operating & Financial Officer

Jim Johnson has been Advanced’s Chief Financial Officer since 2002. He oversees all matters related to finance, accounting, treasury, operations, technology, and human resources. He has led the negotiation and subsequent integration of several mergers and acquisitions, negotiated several business divestitures, and negotiated more than 10 loan agreements.

Previously, Jim served as the EVP of Finance for HALO Industries, Inc., a $400 million publicly traded marketing services and products business. Prior to this role at HALO, Jim was the Chief Integration Officer, responsible for all aspects of the integration of Starbelly.com, an e-commerce promotional products company, with HALO. Before HALO, Jim had been the CFO of Starbelly.com, where he was responsible for all financial and accounting matters of the venture-backed Internet company, including equity raising efforts and financial leadership in the sale of Starbelly.com to HALO in May of 2000.

Jim began his career at Arthur Andersen in 1989, where he worked until joining his client Starbelly.com in 1999. He concluded his career at Arthur Andersen as a Senior Manager. Jim is a Certified Public Accountant in Illinois and graduated Magna Cum Laude from the University of Notre Dame in 1989 with a B.B.A. in Accounting.

Tim Jackson, Vice President, Technology & Operations

Tim earned his staffing industry credentials managing a nurse staffing/MSP business and a PeopleSoft consulting practice. Tim's insights into the strategic role of contingent labor and how to best use technology serves our internal teams, clients and talent well.

Prior to working in the staffing business, Tim was CFO/CIO for a Chicago-based food manufacturer and a co-founder and former COO of an e-learning start-up. Before that, Tim managed a number of product management groups at Bank of America specializing in corporate finance and investment management.

Tim Jackson has a B.S. in Finance from DePaul University and an M.B.A from the University of Chicago specializing in Finance and Marketing. He and his family live in the northern suburbs of Illinois.

Akin Tosyali

Akin Tosyali, Vice President, Marketing

Akin has over 20 years of digital marketing leadership experience. Prior to joining Advanced he served as Director, Digital Marketing at Grainger, where he was responsible for the paid social, paid search, SEO, email marketing, display, and affiliate marketing strategy for the multi-billion dollar organization. Before Grainger, Akin held several leadership positions in digital marketing, including Senior Director, Digital Strategy at Merkle. He is a recognized industry leader, presenting at conferences and summits including Media Math, Adobe Key Account Summit, Adobe Annual Summit, and Search Engine Watch.

Rich Diaz, President, Advanced Resources

Rich joined Advanced Resources as President in 2009, bringing more than 15 years of experience working for high growth, results-oriented companies. Prior to Advanced Resources, Rich was a Managing Director at SolomonEdwardsGroup (SEG), a CFO services firm offering consulting, staffing, and search services. While at SEG he was responsible for opening both the Chicago and Kansas City markets. Prior to joining SolomonEdwardsGroup, Rich was the Area Managing Director for MPS Group a $2 billion dollar professional services firm, where he oversaw the Kansas, Missouri, and Oklahoma markets. While at the MPS Group, Rich was recognized as one of the top producers throughout the company. Rich started his career with Century Personnel which was acquired by SOS Staffing a $250 million dollar staffing firm based in Utah. While at SOS Staffing he served as an Area Manager, and managed as many as 10 branch offices throughout the Midwest.

Rich completed his BS Degree in Psychology from Northwest Missouri State University.

Matt Hopkins, President, WunderLand Group

Entrepreneur. Caring and spirited leader. World traveler. Investment Banker/Financial Services Professional for 30 years – so of course the practical thing to do was start a company in the creative field. Outdoorsman – fishing, skiing, dog-sledding, travel. Always ready for his next adventure. One of 7 siblings. Newly (and first time) married after a whirlwind 10 year courtship. Now has 5 stepchildren. Reader. Theatre and music lover.

Pam Verhoff, President, Advanced RPO

Pam is an accomplished executive leader that has extensive experience building RPO businesses and solutions, as well as developing growth strategy. Pam is responsible for all aspects of strategic planning, sales and marketing, operations, financial management and compliance for Advanced RPO. Her success has largely been a result of building high performance teams and creating a values-driven culture resulting in exceptional employee engagement.

Pam is passionate about impacting every client’s talent acquisition results. The ultimate compliment is when clients tell her that Advanced RPO “gets it”.  She hears it often and Pam believes it’s a result of the experience and strength of the team along with the unique approach we take with each client engagement. Our agenda is not to disrupt, it is to collaborate, innovate and leverage best practices to create an efficient hiring program. Pam’s goal is provide business leaders peace of mind by creating confidence in their talent acquisition function.

Julie Ross, President, Advanced Clinical

Julie is a tenured executive leader responsible for all aspects of strategic planning, corporate alliances, sales and marketing, operations, financial management and regulatory compliance for Advanced Clinical’s CRO and Patient Recruitment offerings. Previously with inVentiv Health Clinical, Ms. Ross served as Senior Vice President, Global Strategic Services and had oversight of Feasibility, Patient Recruitment and Retention, Global Study Start-up, Document Management and Publishing, Expedited Safety Reporting, Grants and Contracts, Clinical Trial Supply Management and Medical Writing. She has a therapeutic specialty in urology and gastroenterology and has consulted with many clients developing products in BPH, MED, OAB, and IBS.

A graduate of the University of Wisconsin, LaCrosse with a bachelor's degree in Nuclear Medicine Technology, Ms. Ross has been in the clinical research industry for over twenty five years. She has held a number of crucial positions allowing her to gain comprehensive knowledge in all facets of clinical research, as well as the Program Director for the School of Nuclear Medicine and Diagnostic Ultrasound at St. Mary's Hospital in Milwaukee, Wisconsin.