Fundraising Fox

Riki Karjalainen

Founder

Co-Founder at Last Accounting Company

San Francisco Bay Area

FoundedLast Accounting Company · YC

About

Riki Karjalainen is co-founder of Last Accounting Company and previously worked on data infrastructure at Token Terminal. He studied applied mathematics at Aalto University.

Co-Founder at Last Accounting CompanyYC S26

Intro paths

YC

Riki went through Y Combinator (Summer 2026) — any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Gustaf Alstromer — the partner who ran Last Accounting Company's batch and knows the company first-hand. YC profile ↗

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In turn, Riki can intro founders to Last Accounting Company's investors below.

Last Accounting Company's investors · 2

Inception Fund$110K – $1.1M checksY CombinatorSan Francisco · $500K checks · since 2026

Co-founders at Last Accounting Company

SLSami Laakkonen
Sami LaakkonenFounder
VPVeikko Pere
Veikko PereFounder
PVPietari Virkkunen
Pietari VirkkunenCo-founder

Experience

  1. LAC (YC S26)Co-Foundercurrent2026 — present
  2. Token TerminalData Engineer2025 — 2026
  3. Token TerminalResearch Analyst2022 — 2023
  4. Stealth StartupCo-Founder2021 — 2023

Frequently asked questions

Who is Riki Karjalainen?
Riki Karjalainen is co-founder of Last Accounting Company and previously worked on data infrastructure at Token Terminal. He studied applied mathematics at Aalto University.
Where does Riki Karjalainen work?
Riki Karjalainen is Co-Founder of Last Accounting Company.
What companies did Riki Karjalainen found?
Riki Karjalainen founded Last Accounting Company.
Where did Riki Karjalainen go to school?
Riki Karjalainen studied at Aalto University (Master of Science - MS, Applied Mathematics); Y Combinator (S26); Aalto University (Bachelor of Science - BS, Engineering Physics and Mathematics).

Founder mafias

Y Combinator mafia8,773

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Y Combinator mafia4,716

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Aalto University mafia22

Also came through, then founded or led a company.

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Token Terminal mafia2

Also came through, then founded or led a company.

Sami LaakkonenSenior Data EngineerFounded Last Accounting Company

Same school

Also attended Aalto University101

Patrik BackmanGeneral Partner at OpenOceanMirva LaatunenSenior Investment Associate at OpenOceanTony NystenPartner at OpenOceanElina HolkkoPartner and CFO at Lifeline VenturesMohammad Zuhair KhanTrainee / Data Engineer at Lifeline VenturesTeemu MattilaPartner at Lifeline Ventures

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Also attended Y Combinator2,000

Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyArhaan A.Deeptech Fellow at Clear VenturesMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports Ventures

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Shared employers

Also worked at LAC (YC S26)4

Max LarssonInvestments at Wave VenturesSami LaakkonenFounder at Last Accounting CompanyVeikko PereFounder at Last Accounting CompanyPietari VirkkunenCo-founder at Last Accounting Company

Also worked at Token Terminal2

Oskari TempakkaInvestor at Enzo VenturesSami LaakkonenFounder at Last Accounting Company

Also worked at Stealth Startup352

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