
CTO / Founding Engineer - Trigger (Computational Creativity)
- On-site
- Rotterdam, Zuid-Holland, Netherlands
- Ventures
Job description
We HATE social media, but we LOVE studying people.
Trigger isn’t a scheduler and it doesn’t generate content. The world has enough of those.
Trigger is a computational creativity layer: it studies context and human behavior to explain why posts work, what to publish next, and how content will perform - improving social performance by understanding people, not by posting more.
Backed by Builders (AI-native venture studio) and working with leading social-driven companies as design partners. Trigger is pre-product, early validation stage with paying design partners.
The role
We’re looking for a Founding Technical Leader - someone who can be a Founding Engineer or CTO builder - to architect and build Trigger’s cognitive engine: the multimodal system that turns creative behavior into understanding.
You’ll work across:
multimodal AI (video, image, audio, text)
full-stack product engineering
context + knowledge modeling
insight + prediction systems
You’ll be building alongside Federico Motta (content psychology & narrative intelligence). Federico brings the why; you help build the how.
What you'll do
Design and build the core architecture of Trigger’s AI + product stack
Implement ingestion pipelines, embeddings, reasoning workflows, and APIs
Develop the early Context Graph connecting creative assets, signals, and outcomes
Ship the Insight & Prediction Engine - why content worked, what to do next
Rapidly prototype → harden → deploy a fast, beautiful product used by strategists and creators
(If senior/CTO level) Set engineering culture, own technical vision, and hire the first engineers
Job requirements
What we're looking for
You’ve built and shipped end-to-end AI products (web + AI layer)
Strong across backend and AI systems
Experience with multimodal models is a strong plus
Deep familiarity with RAG, vector DBs, graph thinking, semantics
Strong systems thinking: data pipelines, embeddings, infra, orchestration
Love for quick iteration, shipping, and problem-solving
Interest in storytelling, design, and human behavior
Founder-level ownership; comfortable in early-stage chaos
(If CTO profile) Ability to set technical vision, roadmap, and represent the technical thesis to investors
Indicative stack
Frontend: Next.js, TypeScript, React/Tailwind
Backend: TypeScript or Python (FastAPI/Node), tRPC
AI: LangGraph / LangChain, OpenAI / Anthropic
Data: pgvector / Weaviate / Pinecone, PostgreSQL, Neo4j
Infra: Vercel, Supabase, Railway, Cloudflare
Why this is exciting
Category creation: not analytics, not scheduling - cognitive intelligence
Hard AI challenges: multimodal context engineering
Immediate impact: direct access to top-tier design partners
Upside: early equity + genuine ownership (including co-founder equity for the right person)
How to reach out
Send a short note with what you’ve built (product, repo, demo) and why this problem grabs you. No formal cover letter needed.
or
All done!
Your application has been successfully submitted!
Contact us
Don’t hesitate to reach out with questions, comments, or just for a quick hello.
Join our ventures
Are you looking for a great place to work, be challenged, and learn from other bright minds?

