Zelcastalumni map

People who leave GitHub most often go to Google and Microsoft. Of them, 22% go somewhere small. The median tenure is 3y

Not GitHub's headcount: these are the engineers in the Zelcast network and the profiles run through the Eng Scorer. 126 people on a map of 67,181, No. 185 on it by people. Updated September 30, 2026.

People on the map
1260.2% of everyone on the map
There now
5644% of the people here
Moved on
7056% of the people here
Median tenure
3ymiddle half 1y 7m to 4y 6m

Put GitHub side by side with another employer.

Came from, went to

Ribbon width is the number of people who made the move. Most arrive from Microsoft. Most leave for Google (4% of recorded departures).

GitHub119 in · 67 out
23 of 119 recorded arrivals shown, 96 more from 93 other companies6 of 67 recorded departures shown, 61 more to 55 other companies

After GitHub

  • 22%Joined a startup15
  • 25%Joined a big company17
  • 52%Elsewhere

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

How long people stay

11%<1y
21%1-2y
28%2-4y
33%4-7y
7%7y+
3y median tenuremiddle half 1y 7m to 4y 6m

118 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: 130 joined, 74 left.

Caliber

81mediantop 10%88
0Eng Scorer caliber, 57 scored99

Titles held here

  1. Senior Software Engineer38
  2. Software Engineer28
  3. Software Engineer III17
  4. Software Engineer II13
  5. Staff Software Engineer11
  6. Software Engineer Intern5
  7. Application Engineering Intern3
  8. Open Source Developer3

8 most common titles, by people who held them.

First job on the record for 3% of people here.

Behind the median

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

  • 18%Exceptional or strong10 people
  • 35%Solid20 people
  • 47%Emerging27 people

57 of the 126 people here carry an Eng Scorer tier.

10 of the 57 people here with a read sit in exceptional or strong, the top two of the five tiers, 18%. 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.

Whether a title rose here

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

51%Titles that rose37 of 73 classified people

  • 51%Rose37 people
  • 44%Stayed level32 people
  • 5%Fell4 people

73 of the 126 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

  1. University of Maryland7.3%
  2. Georgia Tech6.5%
  3. UC Berkeley4.9%
  4. Carnegie Mellon4.1%
  5. Columbia4.1%
  6. University of Washington3.3%
  7. Duke2.4%
  8. Johns Hopkins2.4%

The 8 most listed schools among the 123 people here with a school on file.

9 of the 123 people here with a school on file list University of Maryland, 8 list Georgia Tech and 6 list UC Berkeley. A person can list more than one, so these overlap.

Public work

one square is one in a hundred
59%have a public GitHub account on their profile

74 of the 126 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

30% of the people who have worked at GitHub and list a location live in the San Francisco Bay Area today, against 41% of everyone on the map.

GitHub
Everyone on the map
  • 30%SF Bay Area38 · map 41%
  • 17%New York22 · map 18%
  • 14%Seattle18 · map 5%
  • 12%Washington DC15 · map 13%
  • 6%Los Angeles7 · map 5%
  • 2%Denver3 · map 0.8%
  • 2%Raleigh-Durham3 · map 0.3%
  • 16%Somewhere else20

All 126 people who worked at GitHub 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 GitHub: a metro here isn't an office there. The lower strip is the same metros across the whole map.

Key facts

  • 126 people on the Zelcast alumni map have worked at GitHub: 56 are there now, 70 have moved on.
  • Most leave for Google: 3 people, 4% of recorded departures. Then Microsoft.
  • Most arrive from Microsoft: 15 people. Then Google and Semmle.
  • Median tenure at GitHub: 3y, middle half 1y 7m to 4y 6m.
  • Of the people with a recorded next move after GitHub, fewer than 3 went to a founder title next, 22% joined a company of 200 or fewer, and 25% joined one of 10,000 or more.
  • Median Eng Scorer caliber here: 81 on the 0 to 99 scale, across 57 scored people.
  • Most common title held here: Senior Software Engineer, then Software Engineer.
  • Top school: University of Maryland, listed by 9 of the 123 people here with one on file (7.3%). Then Georgia Tech (8).
  • 30% of the 126 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.
  • 59% of the 126 people here whose profile was checked for public accounts have a public GitHub.
  • 37 rose, 32 stayed level, 4 fell, out of the 73 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 GitHub? See how your profile reads to a startup hiring manager, and where it ranks among 67,181 engineers.

Previous on the mapSymantecNo. 184 by people · 127 on the mapNext on the mapBoston Consulting Group (BCG)No. 186 by people · 125 on the map

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