After South Park Commons
- 37%Founded something14
- 21%Joined a startup8
- 42%Elsewhere
Shares of those who moved on, by their next stop.
People who leave South Park Commons most often go to OpenAI. Of them, 37% found something next and 21% go somewhere small. The median tenure is 8m
Not South Park Commons's headcount: these are the engineers in the Zelcast network and the profiles run through the Eng Scorer. 67 people on a map of 67,181, No. 357 on it by people. Updated September 30, 2026.
- People on the map
- 670.1% of everyone on the map
- There now
- 2639% of the people here
- Moved on
- 4161% of the people here
- Median tenure
- 8mmiddle half 5m to 1y 5m
Came from, went to
Ribbon width is the number of people who made the move. Most arrive from Meta. Most leave for OpenAI (15% of recorded departures).
6 of 54 recorded arrivals shown, 48 more from 45 other companies6 of 39 recorded departures shown, 33 more to 30 other companies
The South Park Commons mafia
14 of the people who left went straight to a founding role, 37% of those who moved on, half of them within 4 months of leaving. The bars cover the ’19 to ’26 classes; earlier founders still count in the total.
How long people stay
57%<1y
29%1-2y
11%2-4y
2%4-7y
2%7y+
56 stays with both a start and an end on the record.
Who comes and goes, by year
<3016
0<317
3<318
8<319
0420
4<321
8722
11823
111024
10725
12<326
joined left2026 is a partial year
2016 to 2026: 68 joined, 42 left.
Caliber
89mediantop 10%97
0Eng Scorer caliber, 39 scored99
Titles held here
- Member39
- Founder Fellow12
2 most common titles, by people who held them.
Behind the median
Everyone here with an Eng Scorer read, placed in their caliber tier.
- 28%Exceptional11 people
- 36%Strong14 people
- 28%Solid11 people
- 8%Emerging or unproven3 people
39 of the 67 people here carry an Eng Scorer tier.
25 of the 39 people here with a read sit in exceptional or strong, the top two of the five tiers, 64%. 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. A tier holding fewer than 3 people is printed with the one next to it, because that few is a person rather than a pattern.
Where they studied
- Carnegie Mellon13.6%
- Stanford13.6%
- MIT9.1%
- UC Berkeley9.1%
- Cambridge4.6%
- Penn4.6%
- University of Waterloo4.6%
The 7 most listed schools among the 66 people here with a school on file.
9 of the 66 people here with a school on file list Carnegie Mellon, 9 list Stanford and 6 list MIT. A person can list more than one, so these overlap.
Public work
one square is one in a hundred
61%have a public GitHub account on their profile
41 of the 67 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
84% of the people who have worked at South Park Commons and list a location live in the San Francisco Bay Area today, against 41% of everyone on the map.
South Park Commons
Everyone on the map
- 84%SF Bay Area56 · map 41%
- 13%New York9 · map 18%
All 67 people who worked at South Park Commons 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 South Park Commons: 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 South Park Commons, at any point in a career.
Key facts
- 67 people on the Zelcast alumni map have worked at South Park Commons: 26 are there now, 41 have moved on.
- Most leave for OpenAI: 6 people, 15% of recorded departures.
- Most arrive from Meta: 3 people. Then Microsoft.
- Median tenure at South Park Commons: 8m, middle half 5m to 1y 5m.
- Of the people with a recorded next move after South Park Commons, 37% went to a founder title next, 21% joined a company of 200 or fewer, and fewer than 3 joined one of 10,000 or more.
- Median Eng Scorer caliber here: 89 on the 0 to 99 scale, across 39 scored people.
- Most common title held here: Member, then Founder Fellow.
- Top school: Carnegie Mellon, listed by 9 of the 66 people here with one on file (13.6%). Then Stanford (9).
- 84% of the 67 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.
- 61% of the 67 people here whose profile was checked for public accounts have a public GitHub.
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 South Park Commons? See how your profile reads to a startup hiring manager, and where it ranks among 67,181 engineers.
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