Zelcastalumni map

People who leave Mapbox most often go to a long tail of companies. 33% go small. Median stay 1y 4m

These are the engineers in the Zelcast network and the profiles run through the Eng Scorer, not Mapbox's headcount: 22 people on a map of 26,572, the No. 447 company on it by people. Updated August 20, 2026.

People on the map
220.1% of everyone on the map
There now
15% of the people here
Moved on
2195% of the people here
Median tenure
1y 4mmiddle half 11m to 3y 4m

Put Mapbox 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 Twilio.

Mapbox23 in · 21 out

21 recorded departures to 20 companies, none more than 2 to any one of them

3Twilio
3 of 23 recorded arrivals shown, 20 more from 20 other companies0 of 21 recorded departures shown, 21 more to 20 other companies

After Mapbox

  • 33%Joined a startup7
  • 14%Joined a big company3
  • 52%Elsewhere

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

How long people stay

27%<1y
32%1-2y
23%2-4y
9%4-7y
9%7y+
1y 4m median tenuremiddle half 11m to 3y 4m

22 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: 21 joined, 21 left.

Caliber

Not enough scored profiles here yet (22).

Titles held here

  1. Software Engineer8
  2. Senior Software Engineer5
  3. Engineering Manager4

3 most common titles, by people who held them.

First job on the record for 5% of people here.

Whether a title rose here

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

45%Titles that rose9 of 20 classified people

  • 45%Rose9 people
  • 55%Stayed level or fell11 people

20 of the 22 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 20 of the 22 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. A direction holding fewer than 3 people is printed together with the one next to it, because a bucket that small is a person rather than a pattern.

Where they studied

  1. UC Berkeley22.7%

The one school among the 22 people here with a school on file.

Of the 22 people here with a school on file, 5 list UC Berkeley.

Public work

Not enough of the record here has been checked.This share needs 30 people whose profile was checked for public accounts, and there are fewer than that here.

Where they are now

64% of the people who have worked at Mapbox and list a location live in the San Francisco Bay Area today, against 47% of everyone on the map.

Mapbox
Everyone on the map
  • 64%SF Bay Area14 · map 47%
  • 23%Washington DC5 · map 7%
  • 14%Somewhere else3

All 22 people who worked at Mapbox 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 Mapbox: 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

  • 22 people on the Zelcast alumni map have worked at Mapbox: 1 are there now and 21 have moved on.
  • The most common previous employer before Mapbox is Twilio (3 people).
  • The median tenure at Mapbox is 1y 4m (middle half 11m to 3y 4m).
  • Of those who moved on from Mapbox, fewer than 3 went on to a founder title, 33% joined a company with 200 or fewer people, and 14% joined a company with 10,000 or more.
  • The most common title held at Mapbox is Software Engineer, then Senior Software Engineer.
  • Of the 22 people here with a school on file, 5 list UC Berkeley (22.7%). A person can list more than one school, so these overlap rather than add up.
  • 64% of the 22 people here who list a location live in SF Bay Area today, against 47% of everyone on the map. That is where they live now, not the office they sat in while they worked here.

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

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