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Make a deal with okuramasafumi
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
173
Account age
7 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 okuramasafumi
Known for
12 views
My talk at #RailsWorld 2025 is over! Thank you so much coming to my talk, if you were not there, don’t worry, the video will be uploaded soon.
7 views
About to fly to Amsterdam for Rails World! I’m so excited to give a talk there, hope to see you soon!
4 views
I just noticed that the latest version of `spree-api` gem uses Alba!
https://rubygems.org/gems/spree_api
I feel so honored to have my own gem as a dependency of a widely used gem! I hope this helps other developers to migrate to Alba.
4 views
https://speakerdeck.com/okuramasafumi/metaprogramming-isnt-real-it-cant-hurt-you
So I'm done! I finished my talk at #rubyconfth I hope it helps you being a friend with metaprogramming.
📊 Post engagement
5
Avg engagement / post
2.9%
Engagement vs followers
Nov 2018
On Mastodon since
🔥 Top post: Here is my deck for my talk at #friendlyrb about Boolean class i · 12 likes + reposts
📊 Activity & format
Posting cadence
0.31 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly images
Recent: 6 text · 6 image · 0 video.
Follower / following
2.2×
Follows 77 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
I just noticed that the latest version of `spree-api` gem uses Alba!
https://rubygems.org/gems/spree_api
I feel so honored to have my own gem as a dependency of a widely used gem! I hope this helps other developers to migrate to Alba.
I miss you, Bangkok! This was the last day of the trip to Thailand for #rubyconfth. It was awesome, and I immediately noticed that 6 days are not enough at all to experience Bangkok (especially when being a speaker for the conference :)) N…
https://speakerdeck.com/okuramasafumi/metaprogramming-isnt-real-it-cant-hurt-you
So I'm done! I finished my talk at #rubyconfth I hope it helps you being a friend with metaprogramming.
https://github.com/sponsors/okuramasafumi
I just setup my GitHub Sponsor page. I hope my work helps you in some ways, and I'd be so happy if you support me (or more specifically, my coffee!)
https://youtu.be/IaUXMYR5MRg?si=2JqZMyFu8N_-haGT
My talk at #RailsWorld 2025 was uploaded! I really appreciate their hard work of the team.
This talk includes lots of demos using Neovim to read through the code (not because of DHH using Ne…
https://speakerdeck.com/okuramasafumi/reading-rails-1-dot-0-source-code
Oh I forgot to share the deck for my #RailsWorld talk about Rails 1.0. This doesn't include demo videos that are core part of this talk, so wait for the video upload!
A Friendly Rubyist.
My talk at #RailsWorld 2025 is over! Thank you so much coming to my talk, if you were not there, don’t worry, the video will be uploaded soon.
About to fly to Amsterdam for Rails World! I’m so excited to give a talk there, hope to see you soon!
https://rubygems.org/gems/alba/versions/3.9.0
Wow, Alba now reached version 3.9.0! The next version might be either 3.10.0 or 4.0.0, and there are some things I want to deprecate...
As a library author, I don’t want to say “you should use my library because it’s the latest”. I just want to say “it’s good, have fun!”
🐘 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 2018
An OG fediverse account from Mastodon's early years — a long, established presence.
💡 Facts
🗓️Joined Mastodon in 2018 — 7 years ago.
👁️Averages 5 views per post.
📤Posts about 0.3× per week.
🕵️ Fake follower check
Estimated89/100
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 (~2.9% of followers engage each post) — an active, real audience.
- Verified account.
- Established account (7+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Have been using Ruby/Rails for about 10 years. Freelance developer in Japan. Business level English and native Japanese. Organizer of a few Ruby community and Kaigi on Rails conference. Creator of #albarb gem. Available for hiring. ここでは日本語はほとんど使いません。
📸 Gallery
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
Jessica Brodkin Webb
17%
Targea Caramar 🇨🇴
14%
lemming
13%
Orge Castellano
12%
Kerry Buckley
10%
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