Sage Haven chat platform
Messaging built for kids and the parents watching over them — architected from nothing, down to the watchOS client and the Terraform that ships it.
MICHAEL HOHLIOS — ST. AUGUSTINE, FLORIDA
Builder first.
Exec second.
Twenty years in software, from first engineer to founding CTO. I’ve grown teams from five to sixty, led one business through two acquisitions, and shipped AR and ML products to enterprise customers. Today I’m founding CTO at Sage Haven. On the side, I run Vyttle, a small studio for privacy-first apps and developer tools.
$ uptime — 20 years · 4 companies · 2 acquisitions
01
Work
Work
AR virtual try-on
Eyewear try-on engine and SDKs — six products, 50+ engineers, one patent. Acquired by 1-800 Contacts in 2022; sold to Fittingbox in 2023.
FilmArray diagnostics
Software and UI built from nothing for BioFire’s multiplex PCR system, carried through FDA 510(k) clearance.
02
Career
Career
2024—Now
Sage Haven
Founding CTO
⌁ 0 → 1
2016—2024
Ditto → Luna (1-800 Contacts)
Sr. Engineer → VP Eng → Head of Engineering, U.S.
⎇ 5 → 60+ · ACQUIRED ×2
2012—2016
MetaSource
Senior Software Engineer
~ CI/CD
2006—2012
BioFire / Idaho Technology
Software Engineer
i FDA 510(k)
03
OSS
OSS
Celadon
a sage-green theme family for terminals · MITCalm green, honest color. Generated from OKLCH parameters — not hand-tuned — with APCA contrast gates and a CVD audit on every build. Four grades, one family. This site is wearing it right now — flip the theme toggle.
celadon
powder
jade
sky
EVERY ACCENT HONEST TO ITS ANSI SLOT
■ red — errors, deletions
■ green — success, additions
■ yellow — warnings, changes
■ blue — info, paths
■ magenta — keywords, branches
■ cyan — strings, links
termic · contributor · AGPL-3.0
Run claude, codex & more in parallel git worktrees. termic.dev ↗
Reviso · Apache-2.0
Local pre-PR code review that catches AI slop — a Claude Code plugin. github ↗
04
Special projects
Special projects
Vyttle
small by designA spare-time studio for intentionally small, privacy-first apps. No accounts, no tracking, no servers.
vyttle.com ↗Sixteen to One
A coffee ratio calculator that does one thing well — water, coffee, ratio, done.
Pica
Puzzles, one cell at a time.
05
Toolkit
Toolkit
TECHNICAL
Go · Python · TypeScript · C#/.NET · Terraform · AWS · GCP · CI/CD · GitHub Actions · Jenkins
DOMAINS
AR/ML · Computer Vision · SaaS B2B · B2C · Healthcare Tech · Mobile/watchOS
LEADERSHIP
Talent Development · Remote Teams · ISO 27001 controls · GDPR · enterprise security audits · M&A Integration · Stakeholder Comms · Strategic Planning