Zelcastalumni map

People who leave Jane Street most often go to Meta, Citadel Securities and Google. 16% go small. Median stay 2y 7m

These are the engineers in the Zelcast network and the profiles run through the Eng Scorer, not Jane Street's headcount: 241 people on a map of 26,572, the No. 31 company on it by people. Updated August 20, 2026.

People on the map
2410.9% of everyone on the map
There now
15765% of the people here
Moved on
8435% of the people here
Median tenure
2y 7mmiddle half 1y to 4y

Put Jane Street side by side with another company, every number against every number.

Came from, went to

Ribbon width is the number of people who made the move. Most arrive from Meta. Most leave for Meta (6% of recorded departures).

Jane Street238 in · 101 out
26Meta17Google8Bloomberg8Citadel8Stripe7Citadel Securities6Two Sigma5Nuro4DatabricksMeta66%Citadel Securities55%Google44%Microsoft44%Stripe44%Amazon33%Figma33%
89 of 238 recorded arrivals shown, 149 more from 116 other companies29 of 101 recorded departures shown, 72 more to 60 other companies

After Jane Street

  • 16%Joined a startup16
  • 26%Joined a big company25
  • 58%Elsewhere

Shares of those who moved on, by their next stop.

How long people stay

24%<1y
18%1-2y
31%2-4y
23%4-7y
4%7y+
2y 7m median tenuremiddle half 1y to 4y

202 stays with both a start and an end on the record.

Who comes and goes, by year

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
joined left2026 is a partial year

2012 to 2026: 315 joined, 158 left.

Caliber

91mediantop 10%96
0Eng Scorer caliber, 241 scored99

there now 91 moved on 89. The people still there score higher than the alumni.

Titles held here

  1. Software Engineer160
  2. Software Engineer Intern74
  3. Software Development Intern13
  4. Trading Intern6
  5. Quantitative Trading Intern5
  6. Software Developer4

6 most common titles, by people who held them.

First job on the record for 8% of people here.

Behind the median

Everyone here with an Eng Scorer read, placed in their caliber tier.

  • 11%Exceptional27 people
  • 66%Strong160 people
  • 19%Solid45 people
  • 4%Emerging9 people

241 of the 241 people here carry an Eng Scorer tier.

Exceptional and strong are the top two of the five tiers. 187 of the 241 people here with a read sit in them, 78%. A tier is the band an Eng Scorer caliber score falls in, so this is the same measurement as the median on the caliber card, opened up.

Whether a title rose here

The level of the first title recorded here, against the last.

24%Titles that rose30 of 123 classified people

  • 24%Rose30 people
  • 71%Stayed level87 people
  • 5%Fell6 people

123 of the 241 people here had a title that could be placed on the ladder before and after.

A title rose when the last title recorded here sits higher on the ladder than the first; for someone who recorded one title here and then left, it is measured against the first title of their next role. The ladder runs intern, junior, mid, senior, staff or manager, principal, director, VP, then founder or C-level. A title that matches no rung is left out rather than guessed, and product, program and project managers are left out entirely, being a different ladder. That leaves 123 of the 241 people here classified, and it leans towards people who have left: someone still here on a single recorded title has nothing to be measured against.

Where they studied

  1. Carnegie Mellon16.5%
  2. MIT14.4%
  3. UC Berkeley10.6%
  4. Stanford8.4%
  5. University of Waterloo8.0%
  6. Princeton4.6%
  7. Brown3.8%
  8. Columbia3.4%

The 8 most listed schools among the 237 people here with a school on file.

Of the 237 people here with a school on file, 39 list Carnegie Mellon, 34 list MIT and 25 list UC Berkeley. A person can list more than one school, so these overlap rather than add up.

Public work

one square is one in a hundred
26%have a public GitHub account on their profile

63 of the 241 people here whose profile was checked for public accounts. An account the check did not find reads the same as no account, so this is a floor rather than a census.

Across the 325 companies on the map that can show this figure, the median is 38%.

Where they are now

78% of the people who have worked at Jane Street and list a location live in New York today, against 33% of everyone on the map.

Jane Street
Everyone on the map
  • 78%New York187 · map 33%
  • 17%SF Bay Area40 · map 47%
  • 2%Washington DC6 · map 7%
  • 3%Somewhere else8

All 241 people who worked at Jane Street list a location, and every share here is over them.

Where they live now, from the profile as it reads today, not where they sat while they worked at Jane Street: a metro here does not mean the company has an office in it. The lower strip is the same metros across the whole map, for comparison.

Key facts

  • 241 people on the Zelcast alumni map have worked at Jane Street: 157 are there now and 84 have moved on.
  • The most common next employer after Jane Street is Meta (6 people, 6% of recorded departures), followed by Citadel Securities and Google.
  • The most common previous employer before Jane Street is Meta (26 people), followed by Google and Bloomberg.
  • The median tenure at Jane Street is 2y 7m (middle half 1y to 4y).
  • Of those who moved on from Jane Street, fewer than 3 went on to a founder title, 16% joined a company with 200 or fewer people, and 26% joined a company with 10,000 or more.
  • The median Eng Scorer caliber of people who have worked at Jane Street is 91 on the 0 to 99 scale (241 scored).
  • The most common title held at Jane Street is Software Engineer, then Software Engineer Intern.
  • Of the 237 people here with a school on file, 39 list Carnegie Mellon (16.5%), then MIT (34). A person can list more than one school, so these overlap rather than add up.
  • 78% of the 241 people here who list a location live in New York today, against 33% of everyone on the map. That is where they live now, not the office they sat in while they worked here.
  • 26% of the 241 people here whose profile was checked for public accounts have a public GitHub account on it.
  • Of the 123 people here whose title could be placed on a ladder both before and after, 30 rose, 87 stayed level and 6 fell.

About this data: built from 144,786 jobs across 26,572 engineers in the Zelcast network and Eng Scorer reads, updated August 20, 2026. A move counts when the next role starts within 24 months of leaving; companies with fewer than 20 people on the map are not shown, and destinations with fewer than 3 people are folded into the totals. Caliber is the Eng Scorer score.

Worked at Jane Street? See how your profile reads to a startup hiring manager, and where it ranks among 26,572 engineers.

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