Florian Leibert

Leibert is from Germany and spent part of high school in Colorado as a foreign-exchange student, where he met Benjamin HindmanBenjamin HindmanBenjamin Hindman, commonly known as Ben Hindman, is a software engineer who co-created the open-source cluster manager Apache Mesos and co-founded the data-center software company Mesosphere.Open the full entry, who later co-created Apache Mesos.⁠[1]

He holds a degree in computer science and business from the International University in Bruchsal, Germany.⁠[2]

Leibert worked at Twitter in San Francisco as a technical lead and software engineer on distributed search and Apache Mesos, and was one of the architects who brought Mesos to Twitter. Together with Abdur Chowdhury, then Twitter’s chief scientist, he invited Hindman, then a Berkeley PhD student, to present his Mesos research at Twitter.⁠[2][3][1]

His co-authored paper “Automatic Management of Partitioned, Replicated Search Services” was selected for the 2011 ACMAustralian Community MediaAustralian Community Media (ACM) is an Australian regional and rural news publishing group with more than 100 brands, including The Canberra Times; in 2019 Nine sold it to a company controlled by interests associated with Antony Catalano and Thorney Investment Group.Open the full entry Symposium on Cloud Computing and served as the basis for Twitter’s elastic search infrastructure.⁠[4]

He then served as a technical lead and architect at AirbnbAirbnbAirbnb is a travel platform for booking stays, experiences, and services, co-founded by Brian Chesky, Joe Gebbia, and Nathan Blecharczyk and headquartered in San Francisco, United States; its Class A common stock trades on Nasdaq under the symbol ABNB. The business began with hosting guests in the founders’ home in 2007, then joined YC’s Winter 2009 batch, and gradually expanded into local experiences, services, and boutique hotels.Open the full entry, where he designed the data infrastructure team behind all of Airbnb’s analytics products, built a Mesos-based analytics infrastructure and co-authored the open-source job scheduler Chronos. His time as a lead developer at Twitter and Airbnb totaled about three and a half years.⁠[4][3][2][5]

By 2016 he had filed five patent applications, three of which had been approved, and he has published a book on service-oriented architecture for social networks.⁠[4][2]

Since 2011 Leibert has been an equity partner at the venture capital firm Data CollectiveDCVCDCVC (Data Collective) is an American deep tech venture capital firm founded in 2010 by Matt Ocko and Zachary Bogue, with offices in Palo Alto and San Francisco, California. It invests in companies that use computing and AI to solve real-world problems in fields such as energy, climate, biomedicine, defense, space, and industry; as of October 2026 it had more than $4 billion in assets under management across 13 funds.Open the full entry, which has backed startups including Cockroach Labs and Buoyant.⁠[5]

In 2013 Leibert and Tobias Knaup, both of whom had left Airbnb, founded Mesosphere to build a business around Mesos, with Leibert as chief executive. The company raised a $2.25 million seed round from Andreessen HorowitzAndreessen HorowitzAndreessen Horowitz (a16z) is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. It invests from the seed stage through the growth stage and provides operational support to its portfolio companies.Open the full entry, Kleiner Perkins, Foundation CapitalFoundation CapitalFoundation Capital is an American early-stage venture capital firm founded in 1995, with offices in Palo Alto and San Francisco. It invests in enterprise software, artificial intelligence, fintech and crypto, and was an early backer of companies including Netflix, Solana and Cerebras.Open the full entry and SV AngelSV AngelSV Angel is a San Francisco venture capital firm cofounded in 2009 by angel investor Ron Conway and former Google executive David Lee. It typically writes small follow-on checks in seed rounds and has invested in companies such as Airbnb, Pinterest, and Dropbox; in 2018 it said it would no longer raise new funds from outside investors, and from 2022 it set up growth funds.Open the full entry.⁠[1][3]

On June 9, 2014, Mesosphere announced a $10.5 million Series A round led by Andreessen Horowitz, with Data Collective and Fuel Capital also investing; the company said it would invest heavily in the open-source Mesos project and build products and services around it.⁠[6][3]

Leibert said at the time, “The most efficient path to cloud computing is to run on top of Mesos.”⁠[3]

On August 12, 2014, Andreessen Horowitz published the podcast episode “a16z Podcast: The Consumerization of IT,” hosted by Peter Levine, then an Andreessen Horowitz adviser focused on enterprise investing, with guests Yoram Novick, CEO of Maxta, and Leibert, then CEO of Mesosphere.⁠[7]

The episode discussed changes in the data center, including whether ARM processors, common in mobile phones, could displace x86 processors in the data center, whether private clouds would give way to hybrid public–private models, and how startups compete with legacy technologies and incumbents. It was uploaded to the a16z YouTubeYouTubeYouTube is Google’s video-sharing and creator platform, founded in 2005 by Steve Chen, Chad Hurley, and Jawed Karim and acquired by Google in 2006. Built around video uploading, viewing, and creator earnings, the platform has developed Shorts, YouTube Music, Premium, YouTube TV, and products for children, and is headquartered in San Bruno, California, United States.Open the full entry channel on January 1, 2019.⁠[7][8]

On September 22, 2014, Mesosphere announced that Hindman had left Twitter to join the company and lead the design of its data-center operating system; Leibert announced the hire as chief executive and co-founder.⁠[9][1]

On March 8, 2018, Andreessen Horowitz published the podcast episode “a16z Podcast: Containing the Monolith — From Microservices to DevOps.” It was based on a developer-focused panel recorded at the a16z Summit in November 2017, moderated by Martin CasadoMartin CasadoMartin Casado is a computer scientist, entrepreneur and venture capitalist who is a general partner at Andreessen Horowitz, where he leads infrastructure investing. A major proponent of software-defined networking, he co-founded Nicira and served as its chief technology officer, and after VMware acquired the company he ran its networking and security business; he also co-founded the nonprofit MuralNet.Open the full entry, the a16z general partner who leads its infrastructure practice, with NetlifyNetlifyNetlify is a San Francisco-based web development and deployment platform company founded in 2014 by Mathias (Matt) Biilmann and Chris Bach. Its founders coined the name “JAMstack” (later written Jamstack) for a web architecture, and its 2021 Series D valued the company at $2 billion.Open the full entry co-founder and CEO Matt Biilmann, Mesosphere co-founder and CEO Leibert, and SignalFx co-founder and CEO Karthik Rau.⁠[10]

The panel discussed what happens when monolithic architectures are broken into containers and microservices, and whether companies are being split into smaller units as well, covering dynamic websites, enterprise cloud monitoring and elastic application scaling. The episode was uploaded to the a16z YouTube channel on January 1, 2019, as “a16z Podcast | Containing the Monolith -- From Microservices to DevOps.”⁠[10][11]

In 2018 Mesosphere raised a $125 million Series D, bringing its total funding to just under $250 million at a valuation of $725 million, up from $600 million in 2016; its investors included T. Rowe PriceT. Rowe PriceT. Rowe Price is a global asset management firm headquartered in Baltimore, Maryland, United States. Founded by Thomas Rowe Price Jr. in 1937, it mainly provides active equity, fixed income, multi-asset, retirement, and alternative investment management. The group’s shares trade on Nasdaq under the ticker TROW, and Rob Sharps serves as chair and chief executive officer.Open the full entry, Andreessen Horowitz, MicrosoftMicrosoftMicrosoft is a technology company founded by Bill Gates and Paul Allen in 1975 and headquartered in Redmond, Washington, with businesses spanning Windows, Microsoft 365, Azure, enterprise software, artificial intelligence, gaming and devices.Open the full entry, Hewlett Packard Enterprise, Khosla VenturesKhosla VenturesKhosla Ventures (KV) is an American venture capital firm founded in 2004 by Vinod Khosla, the founding CEO of Sun Microsystems, and headquartered in Menlo Park, California. It made heavy early bets on clean technology, became OpenAI’s first venture capital investor in 2019, and its portfolio also includes companies such as DoorDash, Block (formerly Square), Impossible Foods, and Rocket Lab.Open the full entry and Koch IndustriesKoch, Inc.Koch, Inc. is a privately held conglomerate headquartered in Wichita, Kansas, United States, and the top-level holding company of the former Koch Industries and its subsidiaries, with businesses spanning energy, chemicals, paper products, glass, electronic components and software. It traces its origins to Wood River Oil and Refining Company, which Fred C. Koch co-founded in 1940.Open the full entry. In 2017 the company had disclosed a $50 million annualized revenue run rate.⁠[12][5]

In September 2018 Leibert announced that he would seek a successor as chief executive, saying, “Now is the time to transition Mesosphere from a founder-led company.” In December 2018 the company named Mike Fey, previously president and chief operating officer of Symantec, as chief executive; Fey formally took over in early February 2019.⁠[5][12]

Leibert served as Mesosphere’s chief executive for about five years. After stepping down, he moved into a role focused on customers, strategy and technology, saying he wanted to spend more time with customers and on the company’s future.⁠[12][5]

The venture capital firm 468 Capital was founded in 2020, and its first fund raised $200 million. As of January 2022, Leibert was a managing partner of the firm alongside Alexander Kudlich and Ludwig Ensthaler.⁠[13]

On January 31, 2022, 468 Capital announced the close of its Fund II with about $400 million in commitments, focused on AI and automation, software, and marketplaces and consumer companies; the firm had raised $1.3 billion in total since its founding. In the announcement Leibert said the firm was “keenly focused on a few emerging areas, MLOps being one of them,” and pointed to investments in QuestDB, Iterative.ai, ActivLoop and Earthly.dev as examples of backing open-source business models.⁠[13]