⸻ Product engineer · Vancouver, BC
Building products
end to end
Turning ambiguous ideas into shipped products: shaping the direction, building the full stack, and sweating the details that make software feel good to use.
Senior Product Engineer with 14+ years of experience in TypeScript/Go, with an affinity towards developer experience and developer tools. I build APIs and products that help teams ship faster.
Product engineer,
end to end.
I'm Valentin, a product engineer with 14+ years of experience across startups, and I like the whole arc: shaping an idea, building the backend and the frontend, then shipping it to real people.
I went through Techstars with Speakbox, a mental health practice management platform, and I keep a foot in open source. TypeScript is home; I reach for Go when I want a CLI or a tight API, and Python when something just need scripting.
Vancouver, BC
What I'm Building
open-sourceHookie
Self-hosted webhook ingest, Redis-backed relay, Next.js dashboard, and Go CLI for streaming webhook events into local development.
Open-sourced. One ingest URL, webhooks live in your CLI in seconds.
open-sourceRSC Boundary
Devtools for seeing where React Server Components end and Client Components begin.
The overlay I reach for when the boundary goes invisible.
- Next.js
- TanStack Start
- React
Techstars '21Speakbox
Practice-management and client-collaboration platform for mental health clinicians and patients.
Techstars '21. Shipped to real clinicians and their patients.
- Mental health
- Practice management
- Telehealth
Recent Posts
The Interview Gap
The industry says AI agents will write most of the code. Senior engineering interviews still gate on whether you can produce a graph traversal cold in 45 minutes. A checkpoint piece, four months into the job search, on the gap between the two.
- Product Engineering
- Engineering Interviews
- Thinking
- AI
Building Incident Memory From Slack and Meet Transcripts
How we built an internal AI post-incident platform around the workflow responders already used: PagerDuty, Slack, Google Meet, structured reports, retrieval, and the tradeoffs that showed up once agent orchestration became production work.
- AI
- Incident Response
- Developer tools
- Internal Tools
I Didn't Know What Was in My Context Window. So I Went Looking.
After installing gstack, I wanted to dig deeper than vendor UIs into what actually lands in context. I built Context Mate as a local experiment to unify traces across Cursor, Claude Code, and Codex. So far it is only partly successful: useful for coarse Cursor buckets and Claude token curves, but not a full inventory by name, and fragile on undocumented storage.
- AI Coding Agents
- Cursor
- Claude Code
- Context Engineering
Hookie: Webhook Fan-out Relay for Local Development
Open-source relay: one stable ingest URL, gRPC fan-out to developer CLIs, HMAC-faithful passthrough, and explicit flow control. Built as a narrow slice next to full managed ingress products.
- Next.js
- Go
- gRPC
- Redis
Hundred Miles · Miles Don't Matter
Two albums on the streaming platforms. I write and record when the IDE is closed.
Known as "Raposa de Fogo" (Firefox)
Training the Afro-Brazilian art of movement, music, and a fair bit of falling over.