About
Stefan Kruger is co-founder and CTO of Lua Global Inc, which provides an AI chat platform for businesses. He previously served as VP of Engineering at Paystack (acquired by Stripe), where he worked on fintech infrastructure scaling. His background includes experience in resilient systems, orchestration, and developer tooling.
Founder at Lua Global IncYC F25
Intro paths
YC
Stefan went through Y Combinator (Fall 2025) — any YC alum in your network can reach them through the YC community.
GP
Their group partner at YC was Nicolas Dessaigne, General Partner at Y Combinator — the partner who ran Lua Global Inc's batch and knows the company first-hand. YC profile ↗
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In turn, Stefan can intro founders to Lua Global Inc's investors below.
Lua Global Inc's investors · 8
20VCLondon · $250K – $5M checks · since 2026Digital Currency GroupNew YorkEnza Capital$250K – $5M checksFlourish VenturesSan Francisco · $100K – $5M checks · since 2026Norrsken22Johannesburg · since 2026P1 VenturesGrand Cayman · $100K – $1M checks · since 2026TRAC (Third Round Analytics Capital)San Francisco · $250K – $2M checksY CombinatorSan Francisco · $500K checks · since 2025
Co-founders at Lua Global Inc
LO
Lorcan O CathainFounder
Experience
- Lua AICTO / Co-Foundercurrent2024 — presentLondon Area, United Kingdom
- StripeVice President of Engineering - Paystack2020 — 2025Dubai, United Arab Emirates
- 4G CapitalChief Technology Officer2019 — 2020City of Cape Town, Western Cape, South Africa
- Latinum - CryptoCo Founder2018 — 2019City of Cape Town, Western Cape, South Africa
- ZoonaChief Technology Officer2018 — 2019City of Cape Town, Western Cape, South Africa
- ZoonaHOE / VP Engineering2018City of Cape Town, Western Cape, South Africa
- ZoonaEngineering Team Lead - Innovations2016 — 2018Cape Town
- World Bank GroupConsultant2018City of Cape Town, Western Cape, South Africa
- Invictus CapitalConsultant2017 — 2018City of Cape Town, Western Cape, South Africa
- wiGroupMobile Engineering Team Lead2015 — 2016Cape Town
- Kruline - Agile DevelopmentEngineering Team Lead2012 — 2015Cape Town
- FinEdge PayrollCTO2008 — 2012Cape Town
- Consulting Services/Contract WorkFull Stack Developer (Java, PHP, Objective C, Android)2004 — 2009Greater Toronto Area, Canada
Skills & more
Java32Android6MySQL8PHP26Spring Framework3Swift3Databases3Spring Boot3Objective-C2Microsoft SQL Server2Python2SQL2
+12 more
AngularJSBlockchainEthereumArtificial Intelligence (AI)Financial AccountingMobile ApplicationsIntegrationProject ManagementMobile DevicesBusiness StrategyBig DataEnterprise ArchitectureLanguages Afrikaans · English
From Stefan's professional profile.
Frequently asked questions
- Who is Stefan Kruger?
- Stefan Kruger is co-founder and CTO of Lua Global Inc, which provides an AI chat platform for businesses. He previously served as VP of Engineering at Paystack (acquired by Stripe), where he worked on fintech infrastructure scaling. His background includes experience in resilient systems, orchestration, and developer tooling.
- Where does Stefan Kruger work?
- Stefan Kruger is Founder of Lua Global Inc.
- What companies did Stefan Kruger found?
- Stefan Kruger founded Lua Global Inc.
- Where did Stefan Kruger go to school?
- Stefan Kruger studied at Y Combinator.
Founder mafias
Y Combinator mafia8,773
Also came through, then founded or led a company.
Sam AltmanPresidentFounded Tools for Humanity +3Jessica LivingstonCo-founderFounded Y CombinatorAlexis OhanianYC Summer 2005Founded RedditFred EhrsamYC Summer 2012Founded Nudge +1Matt HuangYC Winter 2011Founded HotspotsTrae StephensYC Winter 2022Founded Pursuit +1
+ 8,766 more
Y Combinator mafia4,716
Also came through, then founded or led a company.
Ryan SheaEntrepreneurshipFounded StacksTarek MansourFounded KalshiSuhail DoshiEating beans & riceFounded Playground +1Subomi OluwalanaW22Founded ConvoyDarius "Bubs" MonsefS19Founded Sightbox +3Matthew ScholzFounded Oisin Biotechnologies +3
+ 4,709 more
Stripe mafia91
Also came through, then founded or led a company.
Matt HuangBoard MemberFounded HotspotsPatrick CollisonCo-founder & CEOFounded AuctomaticGreg BrockmanFounding Engineer, then first CTOFounded OpenAIDaniela AmodeiEarly employee — Risk ManagerFounded AnthropicArvid LunnemarkSoftware EngineeringFounded CursorParker ConradMember Board of DirectorsFounded Zenefits +1
+ 84 more
4G Capital mafia2
Also came through, then founded or led a company.
Same school
Also attended Y Combinator2,000
Tarek MansourCo-founder & CEO of KalshiSuhail DoshiFounder of Mixpanel; founder of ParticleSubomi OluwalanaCo-founder & CEO of ConvoyMaroof AhmedFounder at Octopus VenturesJustin SwartPartner at Bitkraft Esports VenturesCollin WallaceGeneral Partner at Lobby Capital
+ 1,994 more
Shared employers
Also worked at Lua AI2
Also worked at Stripe186
Hemant TanejaCEO & Managing Director of General CatalystMatt HuangCo-founder and Managing Partner at ParadigmLuciana LixandruPartner at Sequoia CapitalPatrick CollisonCo-founder & CEO of StripeJohn CollisonCo-founder & President of StripeGreg BrockmanCo-founder & President of OpenAI
+ 180 more
Also worked at 4G Capital1
Also worked at Zoona7
Arjuna CostaCo-Founder & Managing Partner at Flourish VenturesMonica Brand EngelManaging Partner at Quona CapitalPerry BlacherPartner at Augmentum FintechEbi AtawodiInvestor at CapitalTBrad MagrathSenior Advisor (AHL Charitable Foundation) at AHL Venture PartnersCharlotte WardHead of Unilever's Climate & Nature Fund at 100+ Accelerator / AB InBev
+ 1 more