Jeff Yemin
Director Of Engineering at MongoDB
Wayland, Massachusetts, United States
Summary
🤩
RockstarJeff Yemin is a seasoned engineering leader with 14 years of experience driving backend and database-focused initiatives, currently serving as Director of Engineering at MongoDB. He combines hands-on development—contributing to core MongoDB drivers, specifications, and performance tooling—with leadership responsibilities that scale product and platform quality. His open-source work spans high-profile projects like the official Java and Go MongoDB drivers, the YCSB benchmarking tool, and Morphia, demonstrating deep expertise in database clients, testing infrastructure, and performance tuning. Jeff has a track record of improving driver monitoring, cursor abstractions, and authentication/UUID handling, alongside refining CI/build systems for robust releases. Based in Wayland, Massachusetts, he blends technical authorship with pragmatic engineering management, often stepping into code to unblock complex integration or performance issues. Colleagues rely on him for clear API thought leadership and for turning specification-level decisions into practical, battle-tested implementations.
14 years of coding experience
Stackoverflow
3,803reputation
298kreached
58answers
0questions
mongodb
top-1%
java
top-5%
Github Skills (42)
unit-testing10
spec10
go-language10
testing10
authentication10
user-authentication10
java10
mongodb-database10
javas10
database-driver10
go10
specification10
bson10
build-automation10
golang10
Programming languages (16)
Github contributions (5)
mongodb/mongo-java-driver
Dec 2011 - Jan 2023
The official MongoDB drivers for Java, Kotlin, and Scala
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:90 releases, 1966 reviews, 4912 commits in 11 years 2 months
Contributions summary:Jeff implemented features related to the streaming ismaster monitoring protocol, allowing for faster detection of topology changes and implemented integration tests for this feature. They also fixed JSON parsing issues in the shell mode UUID constructor. Furthermore, the user addressed formatting issues in Scala tests.
nosqljava-libraryjvmkotlinjava
mongodb/specifications
May 2015 - Jul 2022
Specifications related to MongoDB
Role in this project:Back-end Developer / Technical Writer
Back-end Developer / Technical WriterContributions:382 reviews, 61 commits, 75 PRs in 7 years 3 months
Contributions summary:Jeff primarily contributed to the documentation and specifications related to MongoDB. They added and updated tests for the authentication specification, focusing on connection string parameters. The user also made changes to the server selection and sessions specifications and added prose tests, demonstrating an understanding of the core functionalities and API design. Additionally, they updated the UUID handling specification and removed unused features.
specificationsmongodb
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.