In 1994, Jagielski founded jaguNET Access Services, a web host and ISP.
[1] Additionally, Jagielski has served as the Open Source Program Office lead for companies such as Red Hat,[2] Capital One,[3] VMWare,[4] Uber,[5] and currently Salesforce.
[7] After doing some development on the NCSA HTTPd web server, he started with Apache in early-to-mid 1995.
[8] Jagielski is one of the co-founders of the Apache Software Foundation and served for several years as director, chairman, president, and executive vice-president of the ASF.
[18] In 2015, Jagielski was awarded the European Commission/Open Innovation Strategy and Policy Group's Luminary Award in Creating Open Engagement Platforms for his global efforts in promoting Open Source as an Innovation process.