Find your path to Oscar
144 people in our graph share verified history with Oscar — schools, employers, funds. One of them is your warm intro.
About
Oscar Karlstromer is the founder of Zaplar. He previously attended the Stockholm School of Economics (making the Honors List before dropping out), founded a Nordic non-profit for middle school academic competitions that reached 40,000 students with a 13-person team, and worked in APAC B2B sales handling accounts over $1M AUD across Sydney and Singapore.
Founder at ZaplarYC S26
Intro paths
Oscar went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.
Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran Zaplar's batch and knows the company first-hand. YC profile ↗
In turn, Oscar can intro founders to Zaplar's investors below.
Zaplar's investors · 2
Co-founders at Zaplar
Experience
- ZaplarCo-foundercurrent2026 — present
- Wall Street OasisEquity Research2025 — 2026
- JabraB2B Sales and Marketing focus2024Sydney, Australia & Singapore
- Rising Scholars GroupCo-Founder & CEO2023 — 2024
- GN Hearing ANZMarketing and Sales Admin2024Sydney, NSW
Skills & more
Languages English · Swedish
From Oscar's professional profile.
Frequently asked questions
- Who is Oscar Karlstromer?
- Oscar Karlstromer is the founder of Zaplar. He previously attended the Stockholm School of Economics (making the Honors List before dropping out), founded a Nordic non-profit for middle school academic competitions that reached 40,000 students with a 13-person team, and worked in APAC B2B sales handling accounts over $1M AUD across Sydney and Singapore.
- Where does Oscar Karlstromer work?
- Oscar Karlstromer is Founder of Zaplar.
- What companies did Oscar Karlstromer found?
- Oscar Karlstromer founded Zaplar.
- Where did Oscar Karlstromer go to school?
- Oscar Karlstromer studied at Y Combinator (S26); Stockholm School of Economics (BSc in Business and Economics (dropout)); The Wharton School (Wharton summer studies, Statistics).
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
+ 10,223 more
The Wharton School mafia570
Also came through, then founded or led a company.
+ 563 more
Stockholm School of Economics mafia62
Also came through, then founded or led a company.
+ 55 more
Same school
Also attended Y Combinator2,000
+ 1,994 more
Also attended Stockholm School of Economics342
+ 336 more
Also attended The Wharton School2,000
+ 1,994 more
