Citadel

Citadel publishes a four-step engineering interview process that typically runs about eight weeks end-to-end: a 45-minute first-round video covering coding, data structures and algorithms; a second round of three 45-minute interviews mixing technical and behavioural questions; a leadership interview with a senior engineer once a hiring team expresses interest; and a final-review team-match step. The quantitative research loop has the same four-step shape but is compressed to roughly four to five weeks, with onsite second rounds of three to five 60-minute interviews. Because a candidate's profile is reviewed across both Citadel and Citadel Securities, the sister market maker also owned by Ken Griffin, the leadership round can multiply if more than one team is interested. An eight-week loop with a team-match step sits at the long end of buy-side timelines, so candidates running it in parallel are often still in process here as bank application windows elsewhere close.

Citadel runs an 11-week summer internship structured as a one-week immersive offsite followed by ten weeks of work, across three function tracks: Investing, Engineering, and Quantitative Research. Beyond the summer cohort, the firm runs a portfolio of named recruiting programs and events that feed into it:

• Citadel Associate Program (CAP): a selective investing track for undergraduates and early-career hires
• Discover Citadel: an invitation-only two-day event in New York, London, Hong Kong or Singapore for first- and second-year undergraduates
• Datathon and Terminal: skill-based competitions in data science and algorithmic coding that surface candidates for interviews
• Trading Invitational and the Fixed Income and Macro Central Bank Challenge: function-specific contests held in New York
• GQS PhD Fellowship and PhD Summit: targeted programs for STEM PhDs and postdocs

The 11-week structure absorbs most of an academic summer, and the named events run on their own application clocks earlier in the year. Candidates serious about the firm are typically engaging with one of the competitions or invitationals well before the summer-internship window itself opens, which adds parallel preparation work to the autumn application season.

The hiring loop is run jointly with Citadel Securities, a separate market maker also founded by Ken Griffin: a candidate's profile is shared across both firms during the engineering and quantitative interview process, so a single round of interviews can produce offers from either organisation. The firm awards a GQS PhD Fellowship of up to $100,000 for PhD candidates in mathematics, engineering, technology and science, an unusual level of upstream investment outside academic settings. Early-career hiring is split into three distinct tracks (Investing, Engineering, and Quantitative Research) rather than a single generalist analyst pipeline. For a candidate weighing bank analyst programmes against buy-side options, that matters: function selection happens at application, and the route through Engineering or Quantitative Research is closer to a research or engineering career than to a generalist banking start.

Yes. Citadel currently has 9 open internship and graduate roles on Jorb AI: summer internships, insight programs, graduate schemes, and early-career positions across the United Kingdom, Hong Kong, Singapore, and the United States. Postings update continuously as new roles are added and filled.

Citadel has open internship and graduate roles in the United Kingdom, Hong Kong, Singapore, and the United States. Specific offices and program structure (summer vs year-round, internship vs graduate scheme) vary by region; check individual postings for details.

Applications to Citadel go through the official careers site. Each role on this page links directly to the specific application. Citadel does not use third-party submission services.