Diogo (Da Piedade) Baptista(He/Him)

Founder of Storay | AI Engineer | Student in Cssci @ UvA

Amsterdam, North Holland, Netherlands

Consumer product builder currently working on Storay: a personal inventory app with the long-term ambition of becoming the underlying asset graph for how people catalogue and exchange their belongings. Studying Computational Social Science @ UvA. AI/ML engineer by trade, but what I care about is using technical tools to answer social questions and build products with real-world impact — tech that meets people where they already are, not the other way around.

Experience

Grouped by what kind of work it is. Click any role to expand the details.

Right now

What I'm splitting my time across today — both are mine.

AI engineering

Where the AI engineering chops come from — production agents, RAG and internal tools.

  • Designed and implemented a 4-step conversational coaching flow using the OpenRouter API (Claude Sonnet), with structured prompts for empathetic, autonomy-supportive responses
  • Built full-stack with Next.js 15 App Router, SQLite, and bcrypt session auth
  • Set up a RAG pipeline with cosine similarity retrieval, ingesting Untire Now's clinical content library to ground AI responses in evidence-based material
  • Implemented LLM-as-judge evaluation (async quality scoring on tone, flow compliance, and safety) and per-request observability (latency, tokens, cost) for research and iteration
  • Integrated a risk detection protocol that overrides the coaching flow on distress signals and surfaces crisis resources

Earlier industry

How I got in. Two internships before the engineer title.

  • Conducting manual testing on new features and reported bugs
  • Performing weekly periodic testing across our different platforms
  • Maintaining and updating our QA documentation
  • Conducting market research, competitive benchmarking and user experience research
  • Developing tools to help automate the QA process

Outside the day-job

Leadership, community and the studying-while-working period — the rest of who I am.

  • Preparing the General Assembly meetings for the Bloom study association
  • Chairing the Assemblies and ensuring a smooth discussion
  • Upholding the Bylaws and Statutes of the association
  • Monitoring the Board to ensure they follow said bylaws

Education

University of Amsterdam
Bachelor's degree · Computational Social Science
20232027
Ecole Internationale Differdange
20162023

Languages

DutchConversational
EnglishNative
FrenchNative
GermanProfessional
LuxembourgishFluent
PortugueseNative

Skills & tools

Highlights — the longer list lives over on LinkedIn.

Artificial Intelligence (AI)
Python (Programming Language)
JavaScript
Machine Learning
React.js