200 West Street crowd reflected
The crowd at Goldman's headquarters 200 West Street.
  • Goldman Sachs has named John Madsen as its chief technology officer.
  • Madsen's appointment comes as former CTO Atte Lahtiranta joins Ken Griffin's hedge fund, Citadel.
  • Madsen is a Goldman veteran, joining as an associate in 2003.

Goldman Sachs has named tech veteran John Madsen as its chief technology officer, Business Insider has learned.

Madsen's appointment comes after Goldman lost its current CTO, Atte Lahtiranta, to Ken Griffin's hedge fund, Citadel, Bloomberg first reported. Madsen, currently head of core engineering, will transition to CTO as Lahtiranta departs the firm. Madsen will continue to report to Chief Information Officer Marco Argenti.