After Twilio
- 5%Founded something7
- 27%Joined a startup36
- 14%Joined a big company19
- 54%Elsewhere
Shares of those who moved on, by their next stop.
People who leave Twilio most often go to Google, Amazon and Apple. Of them, 5% found something next and 27% go somewhere small. The median tenure is 3y
Not Twilio's headcount: these are the engineers in the Zelcast network and the profiles run through the Eng Scorer. 174 people on a map of 67,181, No. 138 on it by people. Updated September 30, 2026.
- People on the map
- 1740.3% of everyone on the map
- There now
- 4124% of the people here
- Moved on
- 13376% of the people here
- Median tenure
- 3ymiddle half 1y 7m to 4y 8m
Came from, went to
Ribbon width is the number of people who made the move. Most arrive from Amazon. Most leave for Google (4% of recorded departures).
21 of 163 recorded arrivals shown, 142 more from 136 other companies28 of 139 recorded departures shown, 111 more to 101 other companies
How long people stay
9%<1y
23%1-2y
32%2-4y
27%4-7y
9%7y+
157 stays with both a start and an end on the record.
Who comes and goes, by year
6312
3<313
6414
5315
13316
12917
16918
32819
261920
391821
223822
32423
<3824
6625
<3<326
joined left2026 is a partial year
2012 to 2026: 192 joined, 156 left.
Caliber
82mediantop 10%88
0Eng Scorer caliber, 114 scored99
Titles held here
- Software Engineer63
- Senior Software Engineer38
- Software Engineer Intern37
- Staff Software Engineer25
- Software Engineer II16
- Principal Software Engineer9
- Engineering Manager8
- Senior Engineering Manager5
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.
- 3%Exceptional3 people
- 14%Strong16 people
- 40%Solid46 people
- 40%Emerging46 people
- 3%Unproven3 people
114 of the 174 people here carry an Eng Scorer tier.
19 of the 114 people here with a read sit in exceptional or strong, the top two of the five tiers, 17%. 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.
45%Titles that rose67 of 150 classified people
- 45%Rose67 people
- 49%Stayed level73 people
- 7%Fell10 people
150 of the 174 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 Berkeley15.5%
- Georgia Tech8.1%
- Carnegie Mellon6.3%
- Stanford3.5%
- UC Irvine3.5%
- University of Michigan3.5%
- UIUC2.9%
- UC Davis2.3%
The 8 most listed schools among the 174 people here with a school on file.
27 of the 174 people here with a school on file list UC Berkeley, 14 list Georgia Tech and 11 list Carnegie Mellon. A person can list more than one, so these overlap.
Public work
one square is one in a hundred
54%have a public GitHub account on their profile
94 of the 174 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
63% of the people who have worked at Twilio and list a location live in the San Francisco Bay Area today, against 41% of everyone on the map.
Twilio
Everyone on the map
- 63%SF Bay Area109 · map 41%
- 17%New York30 · map 18%
- 4%Seattle7 · map 5%
- 3%Washington DC6 · map 13%
- 13%Somewhere else22
All 174 people who worked at Twilio 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 Twilio: 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 Twilio, at any point in a career.
Key facts
- 174 people on the Zelcast alumni map have worked at Twilio: 41 are there now, 133 have moved on.
- Most leave for Google: 6 people, 4% of recorded departures. Then Amazon and Apple.
- Most arrive from Amazon: 6 people. Then Capital One and Google.
- Median tenure at Twilio: 3y, middle half 1y 7m to 4y 8m.
- Of the people with a recorded next move after Twilio, 5% went to a founder title next, 27% joined a company of 200 or fewer, and 14% joined one of 10,000 or more.
- Median Eng Scorer caliber here: 82 on the 0 to 99 scale, across 114 scored people.
- Most common title held here: Software Engineer, then Senior Software Engineer.
- Top school: UC Berkeley, listed by 27 of the 174 people here with one on file (15.5%). Then Georgia Tech (14).
- 63% of the 174 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.
- 54% of the 174 people here whose profile was checked for public accounts have a public GitHub.
- 67 rose, 73 stayed level, 10 fell, out of the 150 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 Twilio? See how your profile reads to a startup hiring manager, and where it ranks among 67,181 engineers.
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