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Serge Longin

Serge Longin

Repeat SaaS founder, operator, investor, and venture‑studio co‑builder

sergel
Singapore
Joined January 2025
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RevenueWell Leadership

Summary

Repeat vertical‑SaaS founder and operator: Longin co‑founded and scaled two category SaaS businesses (RevenueWell for dental patient relationship management and Club Automation for fitness/club operations), guiding them to outcomes that included growth equity interest and exit activity. His operational, GTM, and product leadership is grounded in hands‑on scaling experience. vaquerocap+2
Operator with a finance and systems foundation: Early career experience in Microsoft's finance rotation program gave Longin structured FP&A and operational rigor that he later applied to product, pricing, and scaling decisions as a founder and CEO. gov+1
Now a co‑builder and investor focused on founder‑led, high‑friction service problems: After relocating to Singapore, Longin co‑founded BDV (built:different), a venture studio that co‑builds startups and provides pre‑seed capital and operational support—reflecting a shift from operating single companies to systematically creating and scaling many. builtdifferent+1
Advisor and early‑stage investor: Longin participates as an investor and advisor across startups (public profiles and aggregator summaries list positions with Scalapay, Selected (seed), CultureBee, Bobtail, and Service Provider Capital), leveraging operator experience to evaluate product/market fit and GTM execution. muraena+1

Work

Education

Projects

Writing

Meet the American entrepreneur forging the next generation of Singapore-based startups

November 1, 2024

Profile / interview covering Longin's background (Belarus → US), Microsoft early career, founding Club Automation and RevenueWell, move to Singapore, and creation of BDV venture studio.

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Leaders in Dentistry: Serge Longin

March 1, 2014

Interview (2014) discussing RevenueWell's product approach, patient reviews, social media for practices, and thinking about practice growth and automation.

Favicon imagedrbicuspid.com

How to Transform Your Workspace With Color (quote/profile)

June 1, 2013

Profile excerpt quoting Longin about transforming RevenueWell's office environment and his interest in design/psychology.

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Hobbies

Community building, mentoring founders, and extensive coffee‑chat networking (has done hundreds of chats since relocating to Singapore). gov

Notes

HHHong Husaid
SLSerge Longin
is one of the most respected exited founders they've seen in the LATAM Fintech or SaaS scene.

Nov 25, 2025