4x founder

Sean Bolton

Co-Founder and CEO of End Close

Co-founder

End Close· Winter 2026 San Francisco Bay Area

in LinkedIn 𝕏 @SeanBolton

2026Co-founder· End Close

Founder · since 2014

Company

End Close

Role

Co-Founder and CEO

current

Stage

—

no public source

Raised

—

no public source

Based

San Francisco Bay Area

current

Founder / co-founder — the company's markEmployee / research role

Source: LinkedIn work history

Profile coverage5 of 7 · missing posts, contact

End Close

AI powered reconciliation for high-volume payments companies

Winter 2026

Experience

Career

End Close
Co-founder
Co-Founder and CEO · San Francisco Bay Area · 2026 – Present
2026
Modern Treasury
Engineering Manager · San Francisco, California, United States · 2022 – 2025
2022
Modern Treasury
Software Engineer · San Francisco, California, United States · 2019 – 2022
2019
Bricleir
Software Engineer · Palo Alto · 2018 – 2019
2018
GAAStrength.ie & Athletestrength.co
Co-founder
Co-Founder & CTO · Ireland · 2015 – 2018
2015
Teamwork.com
Mobile Development Intern · Cork, Ireland · 2016 – 2017
2016
SummerJobs.ie
Founder
Founder · Ireland · 2014 – 2017
2014
Patrick Bourke Menswear
Sales Assistant · Kilrush , Clare, Ireland · 2011 – 2015
2011
Ericsson
Software Development Intern · Athlone, Ireland · 2015
2015
Divvy
Founder
Founder · NUI Galway · 2014 – 2015
2014
The Pantry
Shop Assistant · Kilkee, Clare, Ireland · 2013
2013

Bio

Sean is the co-founder and CEO of End Close. Sean was the third hire at Modern Treasury (S18) where he spent 6 years as the tech lead of payments engineering before building and running the reconciliation org. While there he scaled the product to $350B in annual payments volume and $1T in annual reconciliation volume with 99.995% automation.