Jaanus Ranniit now Chief Technology Officer; Summer Weisberg is Chief Client Officer; Michael Loiacono is VP, Americas Sales

July 1, 2021. Based on rapid global growth and aggressive go-forward plans, networked testing originator Testlio today announced that three executive leaders have been promoted. Four others have new titles that reflect their integral roles in Testlio as well as the company’s commitment to maximizing value for both customers and employees.

Testlio’s three executive promotions are:

Jaanus Ranniit: Chief Technology Officer. Jaanus is a four-year Testlio veteran who previously spent over seven years at Microsoft/Skype. He heads a team of more than 30, spanning AI/ML, engineering, product management, product design, and DevSecOps. Jaanus drives the Testlio platform vision and roadmap and will be expanding his team to over 60 in the coming year. He is based in Tallinn, Estonia. 

Summer Weisberg: Chief Client Officer. Summer joined Testlio in 2020 after 20 years at CloudBees, CA, and FedEx. She is responsible for global services delivery and client success, managing a rapidly growing team of more than 40 professionals who partner with and activate the Testlio Network of over 10,000 freelancers. Summer is based in Florida, USA.

Michael Loiacono: VP, Americas Sales. Michael has spent four quarters at Testlio. He brings a decade of sales and sales leadership experience. His current team of 10 drives new business, expansions, and renewals across the Americas region. Since joining Testlio, Michael has consistently exceeded targets. He will double his team in the coming quarters. Michael is based in Connecticut, USA.

Four executives with new titles are:

  • Michelle Surya: VP, Media & Entertainment. Reflects her expertise and focus on content leaders; based in California, USA.
  • Tom Chmielewski: VP, Strategic Development. Highlights his concentration on large, new market opportunities; based in London, UK. 
  • Kerli Rungi: VP, Learning & Development. Amplifies her learning acumen and Testlio’s commitment to human growth; based in Tartu, Estonia.
  • Heldin Lind: VP, People & Culture. Re-imagines the approach of HR and showcases her 15-year career; based in Tallinn, Estonia.

“I am honored to partner with these seven senior leaders as we embark on the next phase of growth at Testlio,” said Steve Semelsberger, CEO of Testlio, based in Austin, TX. “They are the best in the business at what they do, and each has worked tirelessly to build our company and serve our clients. I couldn’t be more proud and excited to have them on my team.”


Testlio is currently hiring for multiple roles in Engineering, Sales, Services, Operations, Marketing, and more. For information on joining an ambitious team with a big mission that is distributed by design, visit https://testlio.com/jobs/.

About Testlio
Testlio is a globally distributed company and is the originator of networked testing. Our award-winning combination of platform, freelancers, and services enables you to deliver great customer experiences—fast. In any location. On any device. In any language. Clients include Amazon, American Express, CBS, Microsoft, Netflix, the NBA, SAP and many more. Collectively, they have awarded us an industry-leading 4.7 G2 rating and an NPS of 75. To learn more, visit www.testlio.com.

Tim Ryan serves as the Director of Marketing for Testlio and spends his time between Austin, TX and New Orleans, LA.