After Twitter
- 7%Founded something39
- 19%Joined a startup105
- 25%Joined a big company138
- 49%Elsewhere
Shares of those who moved on, by their next stop.
People who leave Twitter most often go to Google, Meta and Apple. Of them, 7% found something next and 19% go somewhere small. The median tenure is 2y 2m
Not Twitter's headcount: these are the engineers in the Zelcast network and the profiles run through the Eng Scorer. 587 people on a map of 67,181, No. 35 on it by people. Updated September 30, 2026.
- People on the map
- 5870.9% of everyone on the map
- There now
- 102% of the people here
- Moved on
- 57798% of the people here
- Median tenure
- 2y 2mmiddle half 1y 3m to 3y 10m
Came from, went to
Ribbon width is the number of people who made the move. Most arrive from Google. Most leave for Google (5% of recorded departures).
162 of 558 recorded arrivals shown, 396 more from 335 other companies149 of 590 recorded departures shown, 441 more to 323 other companies
The Twitter mafia
39 of the people who left went straight to a founding role, 7% of those who moved on, half of them the same month they left. The bars cover the ’15 to ’26 classes; earlier founders still count in the total.
How long people stay
17%<1y
27%1-2y
32%2-4y
18%4-7y
6%7y+
515 stays with both a start and an end on the record.
Who comes and goes, by year
34912
572113
573214
415015
434616
304317
603218
733519
574620
1304621
6412022
<317523
0324
0<325
0026
joined left2026 is a partial year
2012 to 2026: 648 joined, 660 left.
Caliber
84mediantop 10%93
0Eng Scorer caliber, 341 scored99
Titles held here
- Software Engineer155
- Senior Software Engineer118
- Software Engineer Intern118
- Staff Software Engineer57
- Software Engineer II56
- Machine Learning Engineer34
- Engineering Manager30
- Software Engineer I17
8 most common titles, by people who held them.
First job on the record for 9% of people here.
Behind the median
Everyone here with an Eng Scorer read, placed in their caliber tier.
- 5%Exceptional17 people
- 23%Strong79 people
- 44%Solid149 people
- 25%Emerging84 people
- 4%Unproven12 people
341 of the 587 people here carry an Eng Scorer tier.
96 of the 341 people here with a read sit in exceptional or strong, the top two of the five tiers, 28%. A tier is the band a 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.
46%Titles that rose240 of 527 classified people
- 46%Rose240 people
- 47%Stayed level247 people
- 8%Fell40 people
527 of the 587 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 with one title here who then left, it's 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. Titles that match no rung are left out rather than guessed, and product, program and project managers are left out entirely as a different ladder. What's left leans towards people who have left: someone still here on one recorded title has nothing to measure against.
Where they studied
- UC Berkeley9.8%
- Stanford6.9%
- Carnegie Mellon6.0%
- Georgia Tech4.8%
- MIT4.8%
- University of Waterloo3.8%
- Columbia3.3%
- Cornell3.1%
The 8 most listed schools among the 582 people here with a school on file.
57 of the 582 people here with a school on file list UC Berkeley, 40 list Stanford and 35 list Carnegie Mellon. A person can list more than one, so these overlap.
Public work
one square is one in a hundred
56%have a public GitHub account on their profile
331 of the 587 people here whose profile was checked for public accounts. An account the check missed reads the same as no account, so this is a floor.
31% is the median across the 857 companies that can show this figure.
Where they are now
64% of the people who have worked at Twitter and list a location live in the San Francisco Bay Area today, against 41% of everyone on the map.
Twitter
Everyone on the map
- 64%SF Bay Area376 · map 41%
- 21%New York122 · map 18%
- 4%Seattle25 · map 5%
- 2%Los Angeles11 · map 5%
- 2%Denver9 · map 0.8%
- 1%Washington DC8 · map 13%
- 0.9%Boston5 · map 2%
- 0.5%Atlanta3 · map 1%
- 5%Somewhere else28
All 587 people who worked at Twitter 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 working at Twitter: a metro here isn't an office there. The lower strip is the same metros across the whole map.
On the same resumes
Companies that show up most often alongside Twitter, at any point in a career.
Key facts
- 587 people on the Zelcast alumni map have worked at Twitter: 10 are there now, 577 have moved on.
- Most leave for Google: 29 people, 5% of recorded departures. Then Meta and Apple.
- Most arrive from Google: 48 people. Then Meta and Amazon.
- Median tenure at Twitter: 2y 2m, middle half 1y 3m to 3y 10m.
- Of the people with a recorded next move after Twitter, 7% went to a founder title next, 19% joined a company of 200 or fewer, and 25% joined one of 10,000 or more.
- Median Eng Scorer caliber here: 84 on the 0 to 99 scale, across 341 scored people.
- Most common title held here: Software Engineer, then Senior Software Engineer.
- Top school: UC Berkeley, listed by 57 of the 582 people here with one on file (9.8%). Then Stanford (40).
- 64% of the 587 people here who list a location live in SF Bay Area today, against 41% across the map. Where they live now, not the office they sat in while they worked here.
- 56% of the 587 people here whose profile was checked for public accounts have a public GitHub.
- 240 rose, 247 stayed level, 40 fell, out of the 527 people here whose title could be placed on a ladder before and after.
About this data: built from 352,028 jobs across 67,181 engineers in the Zelcast network and Eng Scorer reads, updated September 30, 2026. A move counts when the next role starts within 24 months of leaving. Companies under 20 people on the map aren't shown, and destinations under 3 people fold into the totals. Caliber is the Eng Scorer score.
Worked at Twitter? See how your profile reads to a startup hiring manager, and where it ranks among 67,181 engineers.
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