STEF OLTHOFF

Built Wisely to a $187M acquisition. Now the technical founder at Bloom.

Recent Projects
Bloom Pre-seed startup
Technical Founder
  • Technical Founder – In five months, went from a proof-of-concept to a revenue-generating app with 200 monthly actives and $500k+ raised.
  • AI Research Agent – Built Bloom's GPT-powered agent harness that takes you from a creative brief to a treatment deck in one minute.
  • Multi-Modal Search – Embedding images with Gemini and video with Twelve labs, so you can search a million assets in natural language.
Restaurant Sentiment Hospitality at scale
Lead Engineer at Wisely
  • Built Sentiment from concept to $1.1M ARR – one-third of company revenue. NLP engine ingesting reviews from 10+ sources in real time.
  • Product played a key role in Wisely's $187M acquisition by Olo in 2021. Now powers guest intelligence for 600+ restaurant brands.
NOAA Coastline Emergencies Responding to risk
Full-Stack Engineer at Tetra Tech
  • Led discovery, design, and full-stack development of a NOAA-funded coastal emergency simulation tool. Discovery session to live MVP in four weeks.
  • Built geospatial visualization and physics-based simulation UI for oil spills, debris tracking, and search-and-rescue scenarios used by coastal response authorities.
Technologies
TypeScript · Next.js · React · PostgreSQL · BullMQ · Redis · Docker · AWS · Cloudflare · Agents + Tooling
Engineering History
Bloom Technical Founder Nov 2025 – Present
Tetra Tech Full-Stack Engineer Jul 2023 – Sep 2025
NewFoundry Full-Stack Engineer Jun 2020 – Jun 2021
Wisely Lead Engineer, Sentiment Sep 2018 – Mar 2020
University of Michigan Software Engineer Sep 2017 – Sep 2018
Education
University of Michigan
Bachelor of Science in Computer Science, 2018