Christian Hartung

Popsy is a website builder that works like Notion. It lets you create professional websites as easy as writing a doc.

Effortless, secure meeting minutes and insights.

We are a fund of 500+ Y Combinator alumni working together to invest in top Y Combinator startups. Our portfolio has gone on to raise from Andreessen Horowitz, Accel, Sequoia, Khosla, Lux, First Round, Initialized, Founders Fund, and many other top VCs. https://www.pioneerfund.vc

We make charging infrastructure cost less (up to 40%) while making it work better (100% reliable communication), eliminating the biggest blockers to scaling charging globally. Our patent-pending technology makes EV charging work anywhere -- underground, in a city, or on a mountaintop -- without the need for internet! At the same time, we save labor, material, equipment, and operational costs. Its a true win-win for operators and for EV drivers. Property managers / operators 👉 Well plan and operate infrastructure using our SecureCharge platform. This gives you the lowest cost, and your tenants a pure digital experience that works underground! Charging operators / travel booking platforms / fleet operators / parking operators 👉 Our flexible combination of turnkey hardware/software plus SDK, HDK, and EV charger retrofit kits allow you to build your business on our unique technology, offering a differentiated product in a crowded market!

Karbon is a B2B payment solution for Indias finance leaders, entrepreneurs, business owners and corporate executives. We serve 2000+ team across India, including decorated companies and tech unicorns. Karbon Card offers up to 15Cr free credit, no personal guarantee, unlimited employees cards for free & more. Karbon Payout offers vendor payment on credit, 24/7 payout, bulk processing, invoice management & more. 2019/7 - Launched and became an instant hit among Bangalore founders 2021/8 - Graduated from Y-Combinator (YC S21) among the top growth picks 2021/9 - Closed $12mn pre-A round 2022/2 - Closed $15mn A round

We help companies to improve machine learning models by curating vision data.

Test more of your app, with greater accuracy, across more devices at a fraction of the cost.

Popsy is a website builder that works like Notion. It lets you create professional websites as easy as writing a doc.

Effortless, secure meeting minutes and insights.

We are a fund of 500+ Y Combinator alumni working together to invest in top Y Combinator startups. Our portfolio has gone on to raise from Andreessen Horowitz, Accel, Sequoia, Khosla, Lux, First Round, Initialized, Founders Fund, and many other top VCs. https://www.pioneerfund.vc

We make charging infrastructure cost less (up to 40%) while making it work better (100% reliable communication), eliminating the biggest blockers to scaling charging globally. Our patent-pending technology makes EV charging work anywhere -- underground, in a city, or on a mountaintop -- without the need for internet! At the same time, we save labor, material, equipment, and operational costs. Its a true win-win for operators and for EV drivers. Property managers / operators 👉 Well plan and operate infrastructure using our SecureCharge platform. This gives you the lowest cost, and your tenants a pure digital experience that works underground! Charging operators / travel booking platforms / fleet operators / parking operators 👉 Our flexible combination of turnkey hardware/software plus SDK, HDK, and EV charger retrofit kits allow you to build your business on our unique technology, offering a differentiated product in a crowded market!