Jeff Rumage
Staff Reporter at Built In
Expertise: Human Resources, Professional Development and Workplace Culture
Education: University of Wisconsin-Madison

Jeff Rumage is a Built In staff reporter covering workplace culture in the tech industry. Before joining Built In in 2021, he worked as a reporter and editor for the Milwaukee Journal Sentinel, Patch and the Oconomowoc Enterprise. He earned a bachelor’s degree in political science and communications from the University of Wisconsin-Madison.

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night time aerial view of sydney australia
10 IT Companies in Sydney to Know
Australia’s most populous city is an emerging global tech hub.
finance professionals talking in an office
20 Finance Companies in Ireland to Know
Powerhouses from Wall Street and Silicon Valley have found fortune on the Silicon Docks.
Two people analyze a solar grid.
10 Renewable Energy Companies in Mumbai to Know
They’re charting a greener future with solar, wind and other energy technologies.
IT offices line the docklands area of Dublin.
10 IT Companies in Dublin to Know
The tech hub has earned the nickname “Silicon Docks.”
An IT professional works on their computer in an office.
20 IT Companies in Ireland to Know
These big names have made an impact from Cork to Dublin.
A photo of a semiconductor being manufactured.
10 Semiconductor Companies in Hyderabad to Know
The world’s biggest semiconductor companies are designing chips in Hyderabad.
A photo of a semiconductor being manufactured.
10 Semiconductor Companies in Pune to Know
Several major players are opening offices to attract local engineers.
A photo of a semiconductor being manufactured.
10 Semiconductor Companies in Chennai to Know
Chennai companies play a key role in the semiconductor supply chain.
A person looking at an open laptop walks alongside network servers.
20 Cybersecurity Companies in Singapore to Know
They help clients by detecting threats, verifying identities and pinpointing weaknesses.
London vehicle traffic is photographed with a long exposure, creating colorful streaks of light.
21 Engineering Companies in London to Know
From defense to transport, engineering firms have a storied history in London.
The Vancouver skyline is lined with offices for several leading IT companies.
19 IT Companies in Vancouver to Know
Vancouver IT companies are innovating in networking, cybersecurity and more.
A group of coworkers look at sticky notes on a window.
20 IT Companies in Canada to Know
These companies are breaking new ground from Vancouver to Montréal.