What companies did Pietari Virkkunen found?

Pietari Virkkunen founded Last Accounting Company.

Where did Pietari Virkkunen go to school?

Pietari Virkkunen studied at Y Combinator; Aalto University (M.Sc. – Industrial Engineering and Management); National University of Singapore (M.Sc. – International Exchange).

Pietari Virkkunen

Founder

Co-founder at Last Accounting Company

Helsinki, Uusimaa, Finland

FoundedLast Accounting Company · YC

Find your path to Pietari

185 people in our graph share verified history with Pietari — schools, employers, funds. One of them is your warm intro.

Petteri KoponenunlockedPietari: together at Slush (2026)

×8Pietari: together at Aalto University

×2Pietari: together at Slush

Pietari: together at Tampere University

About

Pietari Virkkunen is co-founder of Last Accounting Company. He holds an M.Sc. in Industrial Engineering and Management from Aalto University and has prior experience in technology, private equity, and venture capital.

Co-founder at Last Accounting Company YC S26

Intro paths

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

→

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

Last Accounting Company's investors · 3

Inception Fund$110K – $1.1M checks Vela PartnersSan Francisco · $100K – $500K checks Y CombinatorSan Francisco · $500K checks · since 2026

Co-founders at Last Accounting Company

Riki KarjalainenCo-Founder

Sami LaakkonenFounder

Veikko PereFounder

Experience

LAC (YC S26)Co-Foundercurrent2026 — present
Mandatum Asset ManagementPE2026
SlushResearch2026
Maki.vcVC2025
SievoPresales Solution Consultant2023 — 2024
Aalto UniversityResearch Assistant2022 — 2023

Skills & more

Languages English · Finnish · French · Swedish

From Pietari's professional profile.

Frequently asked questions

Who is Pietari Virkkunen?: Pietari Virkkunen is co-founder of Last Accounting Company. He holds an M.Sc. in Industrial Engineering and Management from Aalto University and has prior experience in technology, private equity, and venture capital.
Where does Pietari Virkkunen work?: Pietari Virkkunen is Co-founder of Last Accounting Company.
What companies did Pietari Virkkunen found?: Pietari Virkkunen founded Last Accounting Company.
Where did Pietari Virkkunen go to school?: Pietari Virkkunen studied at Y Combinator; Aalto University (M.Sc. – Industrial Engineering and Management); National University of Singapore (M.Sc. – International Exchange).

Founder mafias

Y Combinator mafia10,230

Also came through, then founded or led a company.

Sam AltmanPresidentFounded Tools for Humanity +3 Garry TanPresident & CEOFounded Y Combinator +1 Jessica LivingstonCo-founderFounded Y Combinator Alexis OhanianPartnerFounded Reddit Fred EhrsamYC Summer 2012Founded Nudge +1 Matt HuangYC Winter 2011Founded Paradigm +1

+ 10,223 more

National University of Singapore mafia184

Also came through, then founded or led a company.

Aihui OngB.Sc.Founded Buela +3 Eugene CheahComputer ScienceFounded Recursal AI, Inc. +2 Vishal ChatrathMaster of EngineeringFounded Secondmind +2 Mike MoradiLeadershipFounded Southwest Nanotechnologies +1 Lloyd LeeExchange StudentFounded Hyperithm +1 Sivamani VarunBachelor of Engineering - BEFounded Keygraph +1

+ 177 more

Aalto University mafia59

Also came through, then founded or led a company.

Olli NuutilaIndustrial managementFounded Cactos +1 Jan GoetzTitle of DocentFounded Iqm +1 Wycliffe RadumaMaster of Science in TechnologyFounded Otos Health +1 Arto TolonenMaster's degreeFounded Audiodraft +1 Niko KarstikkoMasters (incomplete)Founded Bobw +1 Patrik BackmanMaster of ScienceFounded Mariadb Corporation

+ 52 more

Tampere University mafia6

Also came through, then founded or led a company.

Gleb LevinFounded Frankly +1 Tanu-Matti TuominenGraduating Masters StudiesFounded Visionfund Ankur DahamaMaster's degreeFounded Userlens Hai TaMaster of Science - MSFounded Userlens Laura KoivusaloDoctor of Science and TechnologyFounded StemSight

Sievo mafia3

Also came through, then founded or led a company.

Sami LaakkonenJunior Software EngineerFounded Last Accounting Company Fabrice SaporitoCEOFounded BlueBean

Same school

Also attended Y Combinator2,000

Tarek MansourCo-founder & CEO of Kalshi Suhail DoshiFounder of Mixpanel; founder of Particle Subomi OluwalanaCo-founder & CEO of Convoy Arhaan A.Deeptech Fellow at Clear Ventures Collin WallaceGeneral Partner at Lobby Capital Victor SantosVictor Scout at One Way Ventures

+ 1,994 more

Also attended Aalto University176

Patrik BackmanGeneral Partner at OpenOcean Mirva LaatunenSenior Investment Associate at OpenOcean Tony NystenPartner at OpenOcean Elina HolkkoPartner and CFO at Lifeline Ventures Mohammad Zuhair KhanTrainee / Data Engineer at Lifeline Ventures Teemu MattilaPartner at Lifeline Ventures

+ 170 more

Also attended National University of Singapore561

Justin HallPartner at Golden Gate Ventures Mahati SridharPartner, Rise of the Rest at Revolution Celine XiaoInvestor at DN Capital Sofia DahouneInvestor at Daphni Yi Min LohInvestment Associate at Burda Principal Investments Sean LooInvestment Analyst at Burda Principal Investments

+ 555 more

Also attended Tampere University9

Ramin VatanparastAdvisor - Enterprise Technology at Augment Ventures Tanu-Matti TuominenCo-founder, Partner and Head of Investor Relations at IPR.VC Boris NguyenSenior Associate at Levine Leichtman Ankur DahamaFounder at Userlens Hai TaFounder at Userlens Laura KoivusaloCEO at StemSight

+ 3 more

Shared employers

+ 19 more

Also worked at Maki.vc8

Ilkka KivimäkiFounding Partner & Advisor at Maki.vc Pirkka PalomäkiFounding Partner at Maki.vc Pauliina MartikainenManaging Partner at Maki.vc Paavo RäisänenGeneral Partner at Maki.vc Wilson TukiainenInvestment Manager at Maki.vc Anette KinnunenOfficer Manager & Executive Assistant at Maki.vc

+ 2 more

Find your path to Pietari

About

Co-founder at Last Accounting CompanyYC S26

Intro paths

Last Accounting Company's investors · 3

Co-founders at Last Accounting Company

Experience

Skills & more

Frequently asked questions

Founder mafias

Y Combinator mafia10,230

National University of Singapore mafia184

Aalto University mafia59

Tampere University mafia6

Sievo mafia3

Same school

Also attended Y Combinator2,000

Also attended Aalto University176

Also attended National University of Singapore561

Also attended Tampere University9

Shared employers

Also worked at LAC (YC S26)4

Also worked at Mandatum Asset Management1

Also worked at Slush25

Also worked at Maki.vc8

Co-founder at Last Accounting Company YC S26