About
Kaan Sirin is founder of Ossus, which builds software for managing library operations including cataloging, circulation, and inventory management.
Founder at OssusYC W26
Intro paths
YC
Kaan went through Y Combinator (Winter 2026) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Jared Friedman, YC Group Partner — the partner who ran Ossus's batch and knows the company first-hand. YC profile ↗
→
In turn, Kaan can intro founders to Ossus's investors below.
Ossus's investors · 1
Co-founders at Ossus
JG
Jonathan GörtzFounder/CEO
CJ
Carl-Hugo JacobssonFounder
Experience
- Ossus (YC W26)Co-foundercurrent2025 — presentStockholm, Stockholm County, Sweden
- ModulaiAI Engineer2025
- The Faculty of Engineering at Lund UniversityProgramming TA2023 — 2025Lund, Skåne County, Sweden
- SectraSoftware Engineer2024
- Boston Consulting Group (BCG)UnlimITed2022Copenhagen Metropolitan Area
Education
- Y Combinator
- The Faculty of Engineering at Lund UniversityM.Sc. in Industrial Engineering and Management
- Nanyang Technological University SingaporeEngineering
Skills & more
Probability Theory3Python (Programming Language)3Data Analysis3Machine Learning1Data Science1Deep Learning1
- Machine Learning Specialization — DeepLearning.AI, Stanford University
From Kaan's professional profile.
Founder mafias
Y Combinator mafia8,668
Also came through, then founded or led a company.
Sam AltmanPresidentFounded LooptFred EhrsamYC Summer 2012Founded CoinbaseMatt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded PursuitDelian AsparouhovYC Summer 2014Founded Nightingale +1Justin KanYC Winter 2018Founded Rye +3
+ 8,661 more
Nanyang Technological University Singapore mafia29
Also came through, then founded or led a company.
ZJ LinBachelor of EngineeringFounded Landeed +1Stefan Seltz-AxmacherBusinessFounded Polymath Robotics +1Mike MoradiExecutive EducationFounded SensulinDaryl LimMaster of Science - MSFounded MetaPalsMarius AlmstedtB.Sc.Founded PatentPlusDavid MlčochInternational Exchange ProgramFounded Asteroid
+ 22 more
The Faculty of Engineering at Lund University mafia8
Also came through, then founded or led a company.
Rasmus AreskougMaster of Science (MSc)Founded ParaglideTaylor FairbankStudy AbroadFounded ReSchedule MedMathias ThulinMaster of Science in EngineeringFounded GetAcceptLukas PeterssonMaster of Engineering - MEngFounded Andon LabsCaleb ChanFounded LanceAxel Andersson LingbertM.Sc in EngineeringFounded Zaplar
+ 1 more
Same school
Also attended Y Combinator2,000
Leo LuInvestor at Foundation CapitalMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports VenturesVictor SantosVictor Scout at One Way VenturesSwapnil JainCEO, Observe.AI at EMERGENT VENTURESChase AdamPartner at Very Serious Ventures
+ 1,994 more
Also attended The Faculty of Engineering at Lund University31
Rasmus AreskougInvestor at DN CapitalMadelene LarssonPartner at Giant Ventures Global LlpAnna HauptInvestor at IndustrifondenPer AnellInvestor at IndustrifondenLeo AllgoewerImpact Investor at AENUErik LarssonInvestor at Almi Invest
+ 25 more
Also attended Nanyang Technological University Singapore148
Angela ToyPartner & COO at Golden Gate VenturesKarim GillaniGeneral Partner at Luge CapitalMike MoradiGeneral Partner at Cortado VenturesGenping LiuGeneral Partner at Vertex Ventures Sea Management Pte. Ltd.Kelven LamInvestment Director - Water at Emerald Technology Ventures AgGautam GuptaCo-Founder & Venture Partner at BA Capital
:format(webp)/f/174198/3860x2650/379d5fb70e/steel-blue-genping-liu.png)
+ 142 more
Shared employers
Also worked at Ossus (YC W26)4
Also worked at The Faculty of Engineering at Lund University3
Also worked at Sectra1
Also worked at Boston Consulting Group (BCG)857
David SzeAdvisory Partner at GreylockDave MunichielloInvestor at GV (Google Ventures)Massimo PrelzInvestor at DN CapitalRasmus AreskougInvestor at DN CapitalRiccardo MontiOperating Advisor at P101 VenturesAntonio TurroniOperating Advisor at P101 Ventures
+ 851 more