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Make a deal with Jon Gjengset
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
4.3K
Account age
6 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🧰 Free analysis for Jon Gjengset
📊 Post engagement
23
Avg engagement / post
0.5%
Engagement vs followers
Mar 2020
On Mastodon since
🔥 Top post: In January, Anish, Jose, and I returned to MIT CSAIL to teach Mi · 56 likes + reposts
📊 Activity & format
Posting cadence
0.42 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 11 text · 1 image · 0 video.
Follower / following
109×
Follows 39 back. A strong ratio — an audience that follows them, not a follow-for-follow network.
Recent posts
View on Mastodon ↗
🔥 Top post
In January, Anish, Jose, and I returned to MIT CSAIL to teach Missing Semester, a class on topics we've found missing from most CS programs—tools and techniques that everyone should know, like Bash, Git, CI/CD, and AI tools. Today, just like in previous years, we’re releasing th…
Recording of yesterday's open source maintenance stream is now up! We got through left-right (a concurrency primitive), HdrHistogram (a fun data structure), rust-imap (you guessed it), and inferno (the Rust port of flamegraph) in about 5 h…
We haven't done an open source maintenance stream in a while, and by now I have a few open open-source issues and pull requests I'm behind on, so let's rectify that! These span projects like concurrency primitives, data structures, and per…
Recording of yesterday's stream implementing a WAV noise file generator in #rust is now up on YouTube! We managed to get white, pink, brownian, blue, violet, and grey (psychoacoustic!) noise all implemented, so I'll count that as a success…
A few weeks ago I was interviewed by Daniel from Rock the JVM, a channel primarily for (perhaps unsurprisingly) folks working in the JVM ecosystem. It was really fun to chat about Rust with someone not already deeply embedded in it, and th…
For the past few streams, we've been going pretty high level, especially with the aid of LLMs. Not this time! On Friday at 4pm UTC (https://everytimezone.com/s/2ac07a7b), we're going all the way down to "what bits go where", with honest ha…
Back in January I gave a talk at Jane Street with the title "Are Mutexes Slow?". I also gave a lightning version of the same talk at Rustikon last week. The longer Jane Street version is now up on YouTube for anyone interested in some of t…
Sadly, I can't make it to the inaugural TokioConf happening in Portland April 20th - 22nd; I'll be en route to the Blood on the Clocktower convention Final3Con in DC instead 😈
But, I do have a 15% discount code I've been told to hand out t…
Recording of our "port avro-tools' Java-based idl-to-json tool to Rust using an LLM" adventure is now up on YouTube! We got to an initial working implementation in ~4hrs (though still with bugs to iron out in future iterations), which isn'…
As for the LLM bit — I think this is an ideal powercoding (LLM + code review) use-case since we a) have access to the existing Java code and b) there's an infinite supply of trusted tests (the same IDL passed to the Java tool should produc…
Friday 9a UTC (https://everytimezone.com/s/5903cd46) sounds like a good time for a stream! This time, we'll try to port Avro's IDL-to-JSON tool from Java to Rust (with LLM help), leveraging the fact that their grammar is written using ANTL…
The recording of the new year's Q&A stream is now up, with all the questions annotated for easy skipping! https://youtu.be/S_zp82fYrGw
🐘 Community & instance
Home server
fosstodon.org
A open-source software server — its members and audience skew toward that niche, so expect a community-aligned, engaged following.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Mar 2020
An OG fediverse account from Mastodon's early years — a long, established presence.
💡 Facts
🗓️Joined Mastodon in 2020 — 6 years ago.
👁️Averages 23 views per post.
📤Posts about 0.4× per week.
🕵️ Fake follower check
Estimated81/100
Excellent
Credibility score
97%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 97% real, active audience · Low fake-follower risk.
- Engagement (~0.5% of followers engage each post) is around typical for Mastodon.
- Organic base — far more followers than accounts it follows.
- Verified account.
- Established account (6+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Rust live-coder and OSS tinkerer who loves teaching. I try to maintain a high SNR. Wrote Rust for Rustaceans. At Helsing.ai. Formerly AWS. Co-founded ReadySet. he/him/they
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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