Early career A computer programmer and former engineering student, Coristine owns a
limited liability company named TESLA.SEXY. Coristine briefly worked for
cybersecurity firm Path Network. Path Network confirmed that Coristine had been fired following a security incident. Coristine's online
content delivery network, DiamondCDN, has reportedly facilitated the work of the
cybercriminal group EGodly. In 2023, EGodly thanked DiamondCDN, saying, "We extend our gratitude to our valued partners DiamondCDN for generously providing us with their amazing DDoS protection and caching systems, which allow us to securely host and safeguard our website." EGodly has claimed involvement in a number of crimes including email hacking, theft of cryptocurrency, and the harassment of a former FBI agent. According to investigative journalist
Brian Krebs, Coristine has been active in a group of online communities known as "
The Com", a network of Discord and Telegram channels associated with cybercrime activities.
Federal government Coristine worked briefly at
Neuralink, an Elon Musk-run enterprise, before being appointed to the
Department of Government Efficiency (DOGE) after
President Donald Trump took office in January 2025. He was among a group of nineteen- to twenty-five-year-olds without prior experience in government who were appointed to DOGE; Coristine was the youngest member of the group. He worked within the
Office of Personnel Management (OPM), reporting directly to Amanda Scales, a former xAI employee appointed as OPM chief of staff. OPM records listed his role as "expert". According to
Wired, Coristine sat in on calls using a non-government email address where workers were directed to "go over code they had written and justify their jobs". On one call with federal
Small Business Administration staff, Coristine asserted that DOGE wanted access to
human resources, contract, and payment systems at the agency. Coristine was discussed in a February 2, 2025
WIRED article entitled "The Young, Inexperienced Engineers Aiding Elon Musk's Government Takeover". A March 26, 2025
USA Today article reported that Coristine's nickname had become a "pop culture punchline". In a spring 2025 interview with Musk and with DOGE employees, Fox News host
Jesse Watters asked, "'Who is Big Balls?'" "'I am'", Coristine replied. He added that he was working on rooting out fraud and abuse in regard to government spending. The interview made Coristine "well known online and among Musk's immense fanbase". and the
Cybersecurity and Infrastructure Security Agency. On May 31, 2025, Coristine became a full-time
General Services Administration employee at a
General Schedule grade of 15 (the top civil service grade in the federal government). In June 2025, Coristine resigned from the General Services Administration. He was then hired by the
Social Security Administration. In August 2025,
The Independent stated that Coristine's nickname was better known than his actual name. A
whistleblower disclosure on August 26, 2025 by Social Security Administration chief data officer Charles Borges alleged that Coristine and others had uploaded the
Social Security numbers and other personal information of 300 million Americans to a "vulnerable"
cloud server. Borges said this action created a risk of widespread
identity theft in the event of a leak or hack and that it "potentially violated multiple federal statutes" regarding the protection of government data. ==Personal life==