Fundraising FoxMaximilian Stoiber
Angel networkSan Francisco · Pre-Seed–Seed · 1 people tracked
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Investment thesis
Personal website of Max Stoiber, an engineer and angel investor who invests in early-stage startups. He is a Member of Technical Staff at OpenAI, previously Director of Engineering at Shopify, and has founded two companies.
Source: firm website, verified Oct 2, 2026.
Team · 1 people
from public directoriesWhat they invest in
from 12 of 18 portfolio companiesDeveloper Tools ×11Enterprise Software ×8SaaS ×6AI & Machine Learning ×5Cloud Computing ×5Cybersecurity ×3Data & Infrastructure ×3Sales Tech ×2
HQs:United States×9Spain×1United Kingdom×1
Investments · 18 tracked
founders shown can be your intro path
Abbot is a Slack bot that monitors customer conversations to ensure timely responses, automatically summarizes discussions, identifies relevant topics, and recommends follow-up actions for customer support teams.
Developer ToolsEnterprise SoftwareSaaSSales TechSan Francisco, US
Paul Nakata(Founder)inPhil Haack(Founder)in
Co-investorsY CombinatorMC GLMNOP LPPioneerQuery CapitalSoma CapitalTRAC (Third Round Analytics Capital)
Arcjet provides inline security controls for AI workflows and agents, enforcing action-boundary protections such as blocking unauthorized tool calls, preventing data exfiltration, and capping token usage.
AI & Machine LearningCybersecurityDeveloper ToolsSan Francisco, US
David Mytton(Executive Officer, Director)in
Co-investorsAndreessen Horowitz
Clerk provides user management and authentication infrastructure for developers, enabling quick integration of complete user management systems into applications.
CybersecurityDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US
Braden Sidoti(Executive Officer, Director)inColin Sidoti(Executive Officer, Director)in
BoardShvetank Jain(Director)Karan Mehandru(Director)in
Co-investorsAndreessen HorowitzCRV (Charles River Ventures)Madrona Venture GroupMango CapitalMenlo VenturesPreston-Werner Ventures+6 more
Fig develops autocomplete software, visual applications, and keyboard shortcuts for terminal interfaces, designed to make command-line tools more usable for both novice and experienced developers.
Developer ToolsEnterprise SoftwareSan Francisco, US
Brendan Falk(Founder)inMatt Schrage(Founder)in
Co-investorsGeneral CatalystScribble VenturesY CombinatorAbacus Capital GroupBasementBlackbird Ventures+9 more
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Flox provides tooling to manage software and its dependencies down to individual packages, including SBOMs and provenance, with reproducible environments that work across the software lifecycle.
AI & Machine LearningCloud ComputingCybersecurityDeveloper ToolsEnterprise SoftwareNew York City, US
Ron Efroni Rotman(Executive Officer, Director)Michael Brantley(CTO)inRon Efroni(CEO)inBen Futoriansky(Executive Officer)in
BoardAaron Jacobson(Director)inPavel Livshiz(Director)in
Co-investorsHetz VenturesNew Enterprise Associates (NEA)Angel Collective Opportunity FundEssence Venture CapitalFirestreak VenturesTilia Impact Ventures+6 more
Fly.io provides infrastructure and platform services for deploying and running applications in a distributed, globally-connected environment.
Cloud ComputingData & InfrastructureDeveloper ToolsEnterprise SoftwareChicago, US
Michael Dwan(Founder)Jerome Gravel-Niquet(Founder)inKurt Mackey(CEO)inScott Johnston(Executive Officer, Director)Matthew Cunningham(Executive Officer)
BoardMartin Casado(Director)in
Co-investorsAbstract VenturesAndreessen HorowitzElysium VenturesFrialeGeodesic CapitalInitialized Capital+14 more
incident.io Investigations is an AI agent for incident response that automatically triages incidents, gathers evidence from logs, code, telemetry, and deployment history, and generates hypotheses about what broke and why.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareSaaS
Stephen Whitworth(Founder)inChris Evans(Founder)inPete Hamilton(Founder)in
Co-investorsAngel Collective Opportunity FundIndex VenturesInsight PartnersMantis CapitalPoint NineVisionaries Club+3 more
Liveblocks provides APIs and infrastructure for building real-time collaborative tools, enabling multiplayer functionality for creative and productivity applications.
AI & Machine LearningCloud ComputingData & InfrastructureDeveloper ToolsHR TechSaaSSales TechSan Francisco, US
Guillaume Salles(Co-founder & Engineer)inSteven Fabre(Co-founder & Product Designer)in
Co-investorsAdventure FundAtlassian Venturesboldstart venturesKima VenturesBanana CapitalEssence Venture Capital
MagicBell provides notification infrastructure for product teams to build notification experiences for their users.
Cloud ComputingDeveloper ToolsEnterprise SoftwareSaaSBarcelona, ES
Hana Mohan(Founder)in
Co-investorsY CombinatorCherry VenturesConnect VenturesBrighter CapitalGlobevestorHarvard Management Company+1 more
Outsmartly offers conversion rate optimization (CRO) services and technology for ecommerce brands, running high-leverage tests and providing custom development to improve conversion rates, page load times, and page views.
E-commerceMarketing TechRetail Tech
Shalom Volchok(Founder)in
Co-investorsMango Capital
A browser extension or command bar interface for the Arc browser that enables users to search and navigate browser history, manage open tabs, and access productivity tools like ChatGPT integration and system utilities.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareFuture of WorkSaaSLondon, GB
Thomas Mann(Founder)inPetr Nikolaev(Founder)in
Co-investorsAccelAtomicoChapter OneCoatue ManagementY CombinatorAtlassian Ventures+2 more
Upstash is a data platform for developers that handles infrastructure management, allowing users to focus on application development.
Cloud ComputingData & InfrastructureDeveloper Tools
Co-investorsAndreessen HorowitzMango CapitalScaleX VenturesBek Ventures
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Along (sunset)Remote First CapitalStorytell
Portfolio news
latest coverage across their companies
Fly.io · superbcrew.com · Aug 7, 2026
Clerk · trysignalbase.com · Oct 17, 2025
Arcjet · fintech.global · Oct 10, 2025
flox · thesaasnews.com · Sep 26, 2025
Incident · techcrunch.com · Apr 10, 2025
Frequently asked questions
- How many investments has Maximilian Stoiber made?
- Maximilian Stoiber has 18 tracked investments, 1 of which have exited.
- What stage does Maximilian Stoiber invest at?
- Maximilian Stoiber invests at the Pre-Seed, Seed stages.
- What sectors does Maximilian Stoiber focus on?
- Maximilian Stoiber focuses on Enterprise Software.
- Where is Maximilian Stoiber located?
- Maximilian Stoiber is headquartered in San Francisco, US.