Timothy Sehn
Founder And CEO at DoltHub
Santa Monica, California, United States
Summary
🤩
Rockstar🎓
Top SchoolTimothy Sehn is a serial technology leader and founder with over seven years focused on building Dolt, the first version-controlled SQL database that brings Git-style branching and merging to relational data. As Founder and CEO of DoltHub based in Santa Monica, he combines product vision with hands-on backend and database engineering, contributing directly to core features and testing infrastructure in the open-source dolt project. He previously scaled engineering and product at Snap as Senior VP of Engineering—growing the team from 10 to 1,050 and helping scale Snapchat from ~5M to ~180M DAU—and spent over a decade rising to Director at Amazon during its formative growth. His background in Systems Design Engineering from the University of Waterloo underpins a systems-thinking approach to distributed data and developer tooling. Known for marrying operational scale with developer ergonomics, he’s equally comfortable shipping low-level database fixes and steering company strategy.
7 years of coding experience
17 years of employment as a software developer
Bachelor of Applied Science (BASc) Systems Design Engineering, Bachelor of Applied Science (BASc) Systems Design Engineering at University of Waterloo
English, French
Stackoverflow
19reputation
903reached
1answer
0questions
Github Skills (15)
version-control10
databases10
data-versioning10
versioning10
go10
database-administration10
admin10
sql10
database-versioning10
database10
python9
command-line9
testing9
bash9
relational-databases6
Programming languages (12)
Github contributions (5)
dolthub/dolt
Oct 2020 - Jan 2023
Dolt – Git for Data
Role in this project:
Backend Developer & Database Engineer
Backend Developer & Database EngineerContributions:223 reviews, 173 commits, 286 PRs in 2 years 3 months
Contributions summary:Timothy contributed to the Dolt project, which is Git for Data, by fixing merged Go code to ensure the `diff --cached` functionality worked correctly. They made format changes to the code base. Furthermore, they added machinery for testing passwords, which involved Python scripting and changes to bash scripts, specifically related to database server interaction and query execution within integration tests. They also made documentation updates.
git-sqlversion-controlled-databasegit-databasedatabase-version-controldatabase
dolthub/weekly-updates
Jul 2022 - Mar 2025
A repository of all the weekly updates sent to the DoltHub mailing list starting July 2022
Contributions:35 reviews, 265 PRs, 576 pushes in 2 years 8 months
mailing-listweekly-updatesmailingupdates
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