🤝
Make a deal with Stefan Koopmanschap
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
1.5K
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 Stefan Koopmanschap
📊 Post engagement
7
Avg engagement / post
0.5%
Engagement vs followers
Aug 2018
On Mastodon since
🔥 Top post: oh come on people! "AI powered" is not the fancy sales pitch you · 31 likes + reposts
📊 Activity & format
Posting cadence
3.2 / week
Posts several times a week.
Content mix
Mostly text
Recent: 12 text · 0 image · 0 video.
Follower / following
3.1×
Follows 486 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
@ploi heya! I was looking at your offering, and it's looking good! Any chance you're working on adding Dutch server providers such as Tilaa or TransIP?
France and the whole world just got a bit darker.
https://youtu.be/MV_3Dpw-BRY
#protip: if you want to select something from a database, do not start your query with `seleect`. that won't work.
Decided to put some leftover bandcamp codes on band.codes, so if anyone wants to grab my Elektroraum EP: https://band.codes/stefankoopmanschap/elektroraum
Yay for having tests that catch a bug in a change in code.
What to do when your old developer/development partner leaves? https://magma.dev/2026/06/the-orphaned-system/ #linktuesday
if you haven't seen it yet, @dutchphpconference has my talk on sociocratic decision making available: https://phpconference.nl/session/how-to-make-good-decisions-with-a-happy-team/
Happy international non-binary people's day!
Happy to announce I'll be speaking at #SymfonyCon Warsaw this November! It's going to be a brand new talk on improving inclusiveness: https://live.symfony.com/2026-warsaw-con/schedule
Will I see you there?
Last day of the CfP for @symfony con Warsaw!
I just submitted two brand new talks. Have you submitted something already? https://live.symfony.com/2026-warsaw-con/cfp
🐘 Community & instance
Home server
phpc.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
Aug 2018
An OG fediverse account from Mastodon's early years — a long, established presence.
💡 Facts
🗓️Joined Mastodon in 2018 — 7 years ago.
👁️Averages 7 views per post.
📤Posts about 3.2× per week.
🛡️ Audience credibility
75/100
Good
Credibility score
92%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 92% real, active audience · Low fake-follower risk.
- Engagement (~0.5% of followers engage each post) is around typical for Mastodon.
- Verified account.
- Established account (7+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
PHP | speaker | anticapitalist entrepreneur | Rebel @ Extinction Rebellion
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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