Principal PM, Growth at Picsart
Niels Kaspers
Full-stack builder. Products, growth systems, and the human judgment that connects them. I help teams ship by building systems, not heroics.
This site was fully built with Claude Code
Products worth clicking into
The main site is the hub. Each project page links out to the product and back into the founder essays, build notes, and systems that explain it.
ScreenshotEdits
LiveScreenshots that actually look good
A native macOS app that transforms plain screenshots into polished visuals. Add gradient backgrounds, shadows, rounded corners, and padding in seconds.
PDFTry
LivePrivate PDF tools that stay in the browser
A local-first PDF suite for people who do not want to upload documents. Compress, merge, split, convert, secure, inspect, and create PDFs directly in the browser.
PeerWealthy
BuildingSee how you compare
A hyper-local financial comparison app that shows you how you’re really doing—compared to people like you, not influencers or strangers in different life stages.
Get to know me
A 2-minute overview of what I do and how I think about growth.
Products I've worked on
How I work
A few things I've learned along the way.
Clear communication
Complex ideas, simple explanations. The best decisions start with shared understanding — not the loudest voice or fanciest deck.
Systems over heroics
If I do something twice, I build a system. At Picsart that meant replacing messy local-agent setups with a controlled internal platform that now runs 50+ agents in production.
Creative judgment
Data tells you what happened. Judgment tells you what to do about it. The interesting solutions come from connecting dots others don't see.
Adaptive by default
Plans change. Markets shift. What worked last quarter won't work next. The real skill isn't predicting — it's responding well.
Where I've been
Started in marketing, stumbled into product, ended up doing both.
Building in public
Contributing to tools I use and open-sourcing what I build.
Recent activity
Contributions
The boring stuff (automated)
If I do something twice, I build a system. These workflows multiply output without multiplying headcount.
Internal Agent Platform
50+ production agents, 15 teammates, one controlled system.
Programmatic SEO
Template + data → 12,000+ unique pages.
LinkedIn Voice Training
AI content that sounds like me.
Deep Research Pipeline
10+ sources synthesized in minutes.
Claude Code Skills
29 slash commands, one keystroke away.
Ideas that ignite action
Battle-tested lessons from scaling products to millions of users. No theory—just what actually works.
Product-Led Growth
Systematic growth strategies from zero to millions.
AI-Powered Development
Integrating AI into workflows to multiply output.
High-Velocity Teams
Why small teams outperform when shipping fast.
Growth Experimentation
Data-driven decision making and testing at scale.
Things I've learned
Notes on product, growth, and building things that work.
more
What PMtivity is teaching me about building with a small team
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How to build side projects while working full-time and raising a newborn
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My weekly PM operating system for AI-era product work
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Human approval is the missing layer in most AI agent workflows
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If your AI team ships without evals, you are still demoing
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The coordination layer is becoming the bottleneck in AI teams
Let's talk
Working on something interesting? Have a question? I'd love to hear from you.