Cofounder brief board
Browse Finland's
cofounder pool.
Free. Public. No signup required. Real founders looking for cofounders right now.
7 founders · 26 cofounders
in Oulu, Helsinki, Espoo
live
7 founders and 26 cofounders actively looking right now
Or paste a brief
See who we'd match.
Write what you need in plain English or Finnish. Anonymous preview, no signup required.
AI parses your brief. Write in plain English or Finnish.
0/600
Or pick a starting point ↓
/ 01
The diagnosis
Cofounder
matching is broken.
Every other platform is a form. You write a paragraph about yourself. They write a paragraph about themselves. A keyword search decides whether you should build a company together.
That’s why founders end up with the cofounder who answered their post. Not the one their startup actually needed. The signal isn’t in what people claim. It’s in what they’ve shipped, written, and built.
Our take
Read the work. Find the gap. Fill it with someone who’s actually done it.
Try it. No signup.
Paste a brief. See what we’d match.
Free-text in. Structured signals out. Three sample matches ranked against the brief in real time.
0 / 40 min
/ 03
From the directory
Real Finnish founders. Browseable now.
Click any card to see their brief. Sign up only when you want to message.
/ 02
The method
How It Works
Free-text brief, parsed into signals, ranked against live candidates.
Step 1
Write a brief in your own words
60 seconds
A few sentences. Stage, role, location, commitment. English or Finnish, no forms, no resume paste.
Solo founder in Helsinki. MVP shipped, 30 paying users.
Need a technical cofounder. Full-time. Stripe + Postgres.
Step 2
We parse it into matching signals
Instant
Claude reads the brief and extracts the structured fields our ranker needs. You see the parsed result before you publish.
Role
Tech cofounder
Stage
Building MVP
Location
Helsinki
Commitment
Full-time
Step 3
We rank live candidates against your brief
Live, ongoing
A deterministic 5-dimension score ranks every active candidate. We email you when a strong fit publishes their own brief.
92
Step 1
Write a brief in your own words
60 seconds
A few sentences. Stage, role, location, commitment. English or Finnish, no forms, no resume paste.
Solo founder in Helsinki. MVP shipped, 30 paying users.
Need a technical cofounder. Full-time. Stripe + Postgres.
Step 2
We parse it into matching signals
Instant
Claude reads the brief and extracts the structured fields our ranker needs. You see the parsed result before you publish.
Role
Tech cofounder
Stage
Building MVP
Location
Helsinki
Commitment
Full-time
Step 3
We rank live candidates against your brief
Live, ongoing
A deterministic 5-dimension score ranks every active candidate. We email you when a strong fit publishes their own brief.
92
Find Your Cofounder, Finland-First
Every brief is specific, time-bound, and first-person. We rank real people against what you actually wrote.
01
Free-Text Briefs
Describe your situation in plain English or Finnish. No forms. The parser pulls role, stage, location, commitment, and industry straight from your own words.
Essential for: Anyone tired of multi-step onboarding flows
02
Brief-to-Candidate Ranking
Matches are ranked against what you actually said you need, not inferred from a profile. Every match comes with a human-readable explanation of the fit.
Essential for: Everyone. The core of what we do.
03
Verified Builder Signal
LinkedIn, GitHub, startup websites, and writing are pulled automatically. Verifiable evidence of actual capability earns a Verified Builder badge on match cards.
Essential for: Non-technical founders evaluating technical talent
04
Both Sides Write a Brief
Founders write what they need. Cofounders write what they want to join. The engine ranks one against the other, so both sides arrive with real context.
Essential for: Cofounders who want to know the founder is real too
Active across Finland
From the Blog
Everything you need to know
We pull real signals from your LinkedIn, GitHub, startup website, and public work, then use AI to build a deep capability model. Instead of matching on keywords or self-reported skills, our engine scores complementarity: a business founder sees technical cofounders who fill their gaps, and a developer sees founders who need their engineering. We even surface gaps neither side has articulated.
Yes, completely free. Create a profile, browse potential cofounders, and start conversations at no cost. We are focused on helping you find the right cofounder for your startup.
LinkedIn is a generalist network where you post 'looking for cofounder' and hope someone sees it. Cofounder forums are self-reported profiles with no verification. TrustedCofounder pulls real work evidence, matches on complementary capability gaps (not keyword similarity), and requires mutual interest before any conversation starts. No cold outreach, no spam, no guesswork.
Sign up as a Founder and connect your LinkedIn or startup website. Our AI analyzes your background and what you are building, then surfaces the capability gaps your startup needs filled. You get a ranked shortlist of cofounders whose verified strengths fill exactly those gaps.
Sign up as a Cofounder. Connect your LinkedIn or GitHub so we can verify your skills. We match you with founders whose startups need exactly what you bring, whether that is engineering, operations, marketing, finance, or something else entirely.
Most platforms and networks take months of searching. Our AI gives you a ranked shortlist of genuinely complementary people from day one. Each match is scored across multiple dimensions so you can focus on the best fits first.
About this platform
Cofounder brief board, Finland-first
Trusted Cofounder is Finland-first brief-first cofounder matching, built in Oulu and serving founders across Helsinki, Espoo, Tampere, Turku, Oulu, Jyväskylä, Kuopio, and Vaasa. Users write free-text briefs, an AI engine parses them into ranked matches, and verified builders earn credibility from public work.
What is Trusted Cofounder?
Trusted Cofounder is brief-first cofounder matching based in Oulu, Finland. Founders and aspiring cofounders write a paragraph describing what they need or want to join, and the platform parses each brief into structured signals that rank against real candidates. The platform is free, available in English and Finnish, and serves the entire Finnish startup ecosystem.
Who is Trusted Cofounder for?
Trusted Cofounder serves founders looking for cofounders and individuals looking for early teams to join across Finland. Active cities include Helsinki, Espoo, Tampere, Turku, Oulu, Jyväskylä, Kuopio, and Vaasa. Both technical and non-technical roles are supported, with verification through GitHub, public writing, startup websites, and other real artifacts of past work.
Connect your LinkedIn and let our AI find the technical cofounder your startup needs.
Find Your Cofounder
Free, 60 seconds
No credit card
No spam
Real verification