🤝
Make a deal with Jean Boussier
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
685
Account age
3 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 Jean Boussier
📊 Post engagement
22
Avg engagement / post
3.2%
Engagement vs followers
Nov 2022
On Mastodon since
🔥 Top post: I tried to explain why I don't believe the recent accusations to · 68 likes + reposts
📊 Activity & format
Posting cadence
0.17 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 11 text · 1 image · 0 video.
Follower / following
6.4×
Follows 107 back. A strong ratio — an audience that follows them, not a follow-for-follow network.
Recent posts
View on Mastodon ↗
While it has been 18 months since I blogged about it, the json gem performance has improved quite significantly since, so now is a good time to add a few more parts to my JSON serie:
https://byroot.github.io/ruby/json/2026/07/26/optimizing…
I wrote some more as a way to fight jet lag, hopefully it's still readable 😅: https://byroot.github.io/ruby/bundler/2026/04/20/bundle-features.html
With the new job, I didn't get much time or energy to blog lately, but I figured I'd use the various downtime while traveling to Ruby Kaigi to write about some of the things I worked on recently: https://byroot.github.io/ruby/performance/2…
Happy to share that today I'm starting as senior principal at Intercom!
I was recently reminded that not everyone fully understand what the frozen string literal magic comment is about.
So I figured it was the occasion for another deep dive.
https://byroot.github.io/ruby/performance/2025/10/28/string-literals.…
I took some time to delve into my latest work on reducing Ractor contention. This time: Generic Instance Variables
https://byroot.github.io/ruby/performance/2025/08/11/unlocking-ractors-generic-variables.html
Bio update: s/Senior Staff Engineer on Shopify's Ruby and Rails infrastructure team/ funemployed/
After almost 12 years, today was my last day at the company. 🫡
Beyond performance work, I deprecated a bunch of APIs in the JSON gem, and added others, so I figured it would be a good occasion to talk about API design: https://byroot.github.io/ruby/json/2025/08/02/whats-wrong-with-the-json-gem-api.html
I wrote a post to braindump what I'm currently working on: allowing lock-free access to class instance variables from Ractors.
https://byroot.github.io/ruby/performance/2025/05/24/unlocking-ractors-class-variables.html
I did some sort of rubber duck blogging about a patch I'm currently working on: https://byroot.github.io/ruby/performance/2025/04/26/unlocking-ractors-object-id.html
Some personal thoughts on the usability of MySQL and PostgreSQL protocols:
https://byroot.github.io/performance/2025/03/21/database-protocols.html
Happy to share that today I'm starting as senior principal at Intercom!
I was recently reminded that not everyone fully understand what the frozen string literal magic comment is about.
So I figured it was the occasion for another deep dive.
https://byroot.github.io/ruby/performance/2025/10/28/string-literals.…
I took some time to delve into my latest work on reducing Ractor contention. This time: Generic Instance Variables
https://byroot.github.io/ruby/performance/2025/08/11/unlocking-ractors-generic-variables.html
Bio update: s/Senior Staff Engineer on Shopify's Ruby and Rails infrastructure team/ funemployed/
After almost 12 years, today was my last day at the company. 🫡
Beyond performance work, I deprecated a bunch of APIs in the JSON gem, and added others, so I figured it would be a good occasion to talk about API design: https://byroot.github.io/ruby/json/2025/08/02/whats-wrong-with-the-json-gem-api.html
I wrote a post to braindump what I'm currently working on: allowing lock-free access to class instance variables from Ractors.
https://byroot.github.io/ruby/performance/2025/05/24/unlocking-ractors-class-variables.html
I did some sort of rubber duck blogging about a patch I'm currently working on: https://byroot.github.io/ruby/performance/2025/04/26/unlocking-ractors-object-id.html
Some personal thoughts on the usability of MySQL and PostgreSQL protocols:
https://byroot.github.io/performance/2025/03/21/database-protocols.html
🐘 Community & instance
Home server
ruby.social
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
✅ 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
Nov 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.
💡 Facts
🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 22 views per post.
📤Posts about 0.2× per week.
🛡️ Audience credibility
89/100
Excellent
Credibility score
99%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 99% real, active audience · Low fake-follower risk.
- Strong engagement (~3.2% of followers engage each post) — an active, real audience.
- Verified account.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Rails core, Ruby committer, Senior Principal Engineer at Intercom.
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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14%
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12%
Coffeehound RetroSharka 🏳️⚧️
11%
Mojo ♻️
10%
uɐpʇou@ ✸
10%
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