Pahlka spent eight years at CMP Media, where she led the Game Group, responsible for the Game Developers Conference, Game Developer Magazine, and Gamasutra.com. She oversaw the dramatic growth of GDC from 1995 to 2003, and launched the Independent Games Festival and the Game Developers Choice Awards. She was also the executive director of the International Game Developers Association, an independent non-profit association serving game developers around the world. During this time she also served on the advisory boards of the Electronic Entertainment Expo and the GDC, and on the board of directors of the IGDA. More recently, from 2005 to 2009, she was the co-chair and general manager of the Web 2.0 events for TechWeb, a division of United Business Media, in partnership with O'Reilly Media. In that role, she proposed the creation of the Web 2.0 Expo, and became the co-chair for the event. She also played a key role in managing the Gov 2.0 Summit and Gov 2.0 Expo.
Code for America
Pahlka founded Code for America, a San Francisco-based non-profit organization that aims to make government for all people. According to the Washington Post it "is the technology world’s equivalent of the Peace Corps or Teach for America… an alternative to the old, broken path of government IT." In her 2012 TED Talk, Palhlka noted that we will not be able to reinvent government unless we also reinvent citizenship, and asked "Are we just going to be a crowd of voices, or are we going to be a crowd of hands?"
Pahlka was awarded an Internet and Society Award from the Oxford Internet Institute, in recognition of her contribution to digital open government in the US. For her work re-imagining government for the 21st century, Pahlka was named a 2011 HuffPost Gamechanger. She was a celebrity judge for the Federal Communications Commission's Apps for Community contest, along with Marc Andreessen and Newark Mayor Cory Booker. She was elected an Ashoka Fellow in 2012. She also gave a keynote speech at South By Southwest Interactive in 2012. In 2018, Pahlka accepted the Skoll Awards for Social Entrepreneurship on behalf of Code for America and she was featured among "America's Top 50 Women In Tech" by Forbes.
Pahlka is also a co-founder, with Sabrina Merlo and Corey Weinstein, of the East Bay Mini Maker Faire. In comments to The Huffington Post, she made explicit the connection between her work on open government and the Maker movement, saying, "There is a certain generation who have grown up being able to mash up, to tinker with, every system they've ever encountered. So they are meeting their relationship with government in a new way, with a new assumption: We can fix it." The East Bay Mini Maker Faire currently attracts around 7,000 people annually.