# Sean O'Sullivan

Sean O'Sullivan is an experienced technology leader and advisor based in Ireland.
He works with founders and scale-up leaders as a fractional CTO, advisor, and mentor.

## What he does

Sean advises and mentors technology startups and growing companies — typically
those with 5 to 1,500 people navigating product decisions, technical leadership
challenges, or scaling their engineering teams.

He is particularly strong in: product strategy and management, technical leadership,
team building, and working through ambiguity in high-growth environments.

## Background

- Fractional CTO / Advisor — various startups and scale-ups
- CTO, Engage EHS — health and safety SaaS, acquired by EcoOnline
- Co-Founder and CTO, Dial2Do — voice assistant
- Founder and CEO, Rococo — embedded mobile, Bluetooth and Java
- Founder and CEO, Localsocial — proximity platform
- VP Professional Services, IONA Technologies — middleware
- Software Engineer and Team Lead, NZI — insurance
- Software Engineer, NCB — financial services

## Best fit

Companies with strong values, a mission Sean can believe in, and meaningful
technical or product challenges. Particularly interested in mobile, connected
devices, and IoT.

## Contact

Website: https://seanosullivan.com
Contact form: https://seanosullivan.com/#contact
LinkedIn: https://www.linkedin.com/in/sos100/