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Prev Arena AI, Voodoo Manufacturing (YC W17), Body Labs, and Layer By Layer (YC S13).\n", "is_active": false, "linkedin_url": "https://www.linkedin.com/in/jmschwartz11", "x_url": "https://twitter.com/JMSchwartz11", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/4175a41b7ddfb0a9f80aaa87d7b4354f003a0842.jpg" }, { "user_id": 36829, "full_name": "Oliver Ortlieb", "title": "Founder", "founder_bio": "Oliver is the co-founder and CTO of Ultra.\n\nBefore co-founding Ultra, Oliver Ortlieb was the Co-founder & CTO at Voodoo Manufacturing where he built the software and systems to support one of the largest 3D printing factories in the world. Prior to that, he co-founded Layer By Layer, a secure marketplace for 3D-printable products. He holds multiple patents in the field of 3D printing, and received his BS in Computer Science from Harvey Mudd College.", "is_active": false, "linkedin_url": "https://www.linkedin.com/in/oliverortlieb", "x_url": "", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/c3fc0be0545afe2d8211c303677994e8a2952daa.jpg" }, { "user_id": 165427, "full_name": "Patrick Deem", "title": "Founder/CFO / Head of Business Development", "founder_bio": "", "is_active": false, "linkedin_url": "https://www.linkedin.com/in/patrick-deem-7851511?trk=nav_responsive_tab_profile_pic", "x_url": "", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/9ef3577b6d9873a2bd368db7a09c723421ac35e6.jpg" } ], "jobs": [], "news": [], "launches": [] }, { "id": 1754, "name": "Mighty Buildings", "slug": "mighty-buildings", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0751a2456763d15191cc0c59216be6ab7810d208.png", "website": "https://www.mightybuildings.com", "all_locations": "San Francisco, CA, USA; Oakland, CA, USA", "long_description": "Mighty Buildings is an innovative construction technology company based in Oakland, CA creating beautiful, sustainable, and high-quality homes using 3d-printing, robotics, and automation. Their mission is to have a positive impact on the environment, local communities, and the housing crisis through their sustainable approach.\r\n\r\nMighty Buildings' technology has the potential to unlock the needed productivity for large scale construction alongside the opportunity for reduced emissions, leading to a more sustainable product and future. Mighty Buildings was founded by a team of physicists and robotics engineers with extensive experience solving hard R&D problems and building successful engineering firms. They started by inventing a new material that is a 3D printing tech that enabled printing of an entire building, not just walls, in a single cycle. Unlike concrete, Mighty Buildings’ material is lighter, can be uniquely treated (trimmed and cut) by robotic arms, and features high thermal insulation properties. This allows them to produce prefab housing with up to 80% of operations automated.\r\n\r\nMighty Buildings has a near-zero waste production process, preventing 1,100 - 2,000 kg of CO2 emission per 3D-printed home. They are committed to achieving Net-Zero by 2028 - making the company 22 years ahead of the construction industry.\r\n\r\nThe company is certified under California's Factory Built Housing program to build units using 3D-printing, but they are also the first company to achieve certification under the UL 3401 standard for evaluating building structures and assemblies.", "one_liner": "3D printing beautiful, high-quality, and sustainable homes.", "team_size": 200, "industry": "Real Estate and Construction", "subindustry": "Real Estate and Construction -> Housing and Real Estate", "launched_at": 1579431996, "tags": [ "Robotics", "Construction", "3D Printing" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2018", "status": "Inactive", "industries": [ "Real Estate and Construction", "Housing and Real Estate" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": null, "url": "https://www.ycombinator.com/companies/mighty-buildings", "api": "https://devasheeshg.github.io/yc-api/batches/winter-2018/mighty-buildings.json", "year_founded": 2017, "city": "San Francisco", "country": "US", "linkedin_url": "https://www.linkedin.com/company/mightybuildings/", "x_url": "https://twitter.com/mightybuildings", "fb_url": "https://www.facebook.com/mightybuildings/", "cb_url": "https://www.crunchbase.com/organization/mighty-buildings", "github_url": null, "logo_url": "https://bookface-images.s3.amazonaws.com/small_logos/0751a2456763d15191cc0c59216be6ab7810d208.png", "app_video_url": null, "dday_video_url": null, "company_photos": [], "primary_partner": null, "founders": [ { "user_id": 181691, "full_name": "Slava Solonitsyn", "title": "Founder", "founder_bio": "2 times YC alum: Mighty Buildings (W18), No Cap (W23). Angel investor. No Cap 🚫🧢", "is_active": false, "linkedin_url": "https://www.linkedin.com/in/solonitsyn/", "x_url": "https://twitter.com/solonitsyn", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/8e868406528e5e41435776dd8975a4d49ba71a74.jpg" }, { "user_id": 210644, "full_name": "Dmitry Starodubtsev", "title": "Founder", "founder_bio": "Dmitry Starodubtsev is a Top YC Founder @MightyBuildings (YC W18, $150M+ raised) and @NoCap/Intently (YC W23, with NoCap Mafia founders backing $1B+ of companies). Entrepreneur and angel investor in science, AI, and deep-tech. On the hunt for sustainable ways of unlocking higher productivity in critical industries. Can help with product development, R&D acceleration, and fundraising. Always open to connect—especially as I expand my network in AI while building my next big thing!", "is_active": false, "linkedin_url": "https://www.linkedin.com/in/dimastar/", "x_url": "https://twitter.com/dmitry_star", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/fb7ffe04c21e92f2fde9fe105b438f437e49a49b.jpg" } ], "jobs": [], "news": [ { "title": "Mighty Buildings raises $52M to build 3D-printed prefab homes | TechCrunch", "url": "https://techcrunch.com/2023/09/12/mighty-buildings-raises-52m-to-build-3d-printed-prefab-homes/", "date": "Sep 12, 2023" }, { "title": "3D-Printed, Factory-Built Homes Coming To A Community Near You", "url": "https://www.forbes.com/sites/carolynschwaar/2023/03/28/3d-printed-factory-built-homes-coming-to-a-community-near-you/?sh=486c7edd4cc8", "date": "Mar 28, 2023" }, { "title": "Mighty Buildings completes \"world's first\" 3D-printed zero-net energy home", "url": "https://www.dezeen.com/2022/11/04/mighty-buildings-worlds-first-3d-printed-zero-net-home-california/", "date": "Nov 04, 2022" }, { "title": "Mighty Buildings lands $22M to create ‘sustainable and affordable’ 3D-printed homes – TechCrunch", "url": "https://techcrunch.com/2021/07/13/mighty-buildings-lands-22m-to-create-sustainable-and-affordable-3d-printed-homes/", "date": "Jul 13, 2021" } ], "launches": [] }, { "id": 1847, "name": "ArchForm", "slug": "archform", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/611850d9929ff8231ea7f5c72b6f4d2500375fbe.png", "website": "http://archform.com", "all_locations": "San Francisco, CA, USA", "long_description": "Archform is teeth aligner software startup that lets orthodontists create, design and 3D print aligners within their own offices.\r\n\r\nThe idea is to provide orthodontists with a way to better compete against some direct-to-consumer teeth aligner startups and cut down on the cost of Invisalign.", "one_liner": "Replacing orthodontic braces with our clear aligner and software", "team_size": 23, "industry": "Healthcare", "subindustry": "Healthcare -> Medical Devices", "launched_at": 1510365747, "tags": [ "Robotics", "Health Tech", "Medical Devices", "3D Printing" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2018", "status": "Active", "industries": [ "Healthcare", "Medical Devices" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": null, "url": "https://www.ycombinator.com/companies/archform", "api": "https://devasheeshg.github.io/yc-api/batches/winter-2018/archform.json", "year_founded": 2013, "city": "San Francisco", "country": "US", "linkedin_url": "https://www.linkedin.com/company/archform", "x_url": "https://x.com/archform", "fb_url": "https://www.facebook.com/ArchFormCo", "cb_url": null, "github_url": null, "logo_url": "https://bookface-images.s3.amazonaws.com/small_logos/611850d9929ff8231ea7f5c72b6f4d2500375fbe.png", "app_video_url": null, "dday_video_url": null, "company_photos": [], "primary_partner": null, "founders": [ { "user_id": 74663, "full_name": "Andrew Martz", "title": "Founder/CEO", "founder_bio": "", "is_active": true, "linkedin_url": "https://www.linkedin.com/in/martzandrew/", "x_url": "https://twitter.com/martz_andrew", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/c4811f35fcecf7be044f269ff5d81e352f69907e.jpg" } ], "jobs": [], "news": [], "launches": [] }, { "id": 21816, "name": "VenoStent", "slug": "venostent", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/85c511b5b08466c9718931c1aafcb26b7bd9181b.png", "website": "https://www.venostent.com", "all_locations": "Houston, TX, USA", "long_description": "There are 10 million dialysis and bypass surgeries per year, but half of them fail. VenoStent saves lives with a wrap that goes around blood vessels during surgery so they don't fail.", "one_liner": "Absorbable wrap for blood vessels", "team_size": 17, "industry": "Healthcare", "subindustry": "Healthcare -> Medical Devices", "launched_at": 1593442656, "tags": [ "Medical Devices", "3D Printing" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Active", "industries": [ "Healthcare", "Medical Devices" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": null, "url": "https://www.ycombinator.com/companies/venostent", "api": "https://devasheeshg.github.io/yc-api/batches/summer-2020/venostent.json", "year_founded": 2017, "city": "Houston", "country": "US", "linkedin_url": "https://www.linkedin.com/company/venostent", "x_url": "https://twitter.com/venostent", "fb_url": null, "cb_url": "https://www.crunchbase.com/organization/venostent", "github_url": null, "logo_url": "https://bookface-images.s3.amazonaws.com/small_logos/85c511b5b08466c9718931c1aafcb26b7bd9181b.png", "app_video_url": null, "dday_video_url": null, "company_photos": [], "primary_partner": { "name": "Jared Friedman", "url": "https://www.ycombinator.com/people/jared-friedman" }, "founders": [ { "user_id": 300009, "full_name": "Tim Boire", "title": "Founder", "founder_bio": "President and CEO of VenoStent, Inc. I developed these novel smart polymeric biomaterials for vascular applications during my PhD at Vanderbilt University. Focus of the technology shifted to hemodialysis access applications after participating in the 2014 NSF I-Corps program. BS, Chemical & Biological Engineering and Biotechnology, Tufts University, 2008; PhD, Biomedical Engineering, Vanderbilt University, 2017. Worked in R&D at Genzyme Corporation, 2008 - 2011. Grew up in Nashua, NH.", "is_active": true, "linkedin_url": "https://www.linkedin.com/in/timothy-boire-283bab10/", "x_url": "", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/099024dafa7c4a08edd4b77c7c900fae5ca42412.jpg" }, { "user_id": 101965, "full_name": "Geoffrey Lucks", "title": "Founder", "founder_bio": "Co-founder & COO of pivotal trial-stage therapeutic medical device company developing bioabsorbable wraps to improve vascular surgery. Vandy MBA, UPenn Masters of Bioethics, UW-Madison UG\n\nInterested in tech and culture. Reading: the classics, religion, economics, finance, politics, philosophy, history, social sciences, etc. Born mellow and everywhere harshed. ", "is_active": true, "linkedin_url": "https://www.linkedin.com/in/geoffrey-lucks-0495a239/", "x_url": "", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/aa2ab7a7ca416d6b24531a28395ee4ab9e3bc0b9.jpg" } ], "jobs": [], "news": [ { "title": "VenoStent Completes $16M Series A Financing, Receives IDE Approval from FDA to Begin US Trial", "url": "https://finance.yahoo.com/news/venostent-completes-16m-series-financing-140400126.html", "date": "Jul 31, 2023" }, { "title": "VenoStent Technology Receives Breakthrough Device Designation by FDA | BioSpace", "url": "https://www.biospace.com/article/releases/venostent-technology-receives-breakthrough-device-designation-by-fda/", "date": "May 17, 2022" } ], "launches": [] }, { "id": 29662, "name": "Atum Works", "slug": "atum-works", "former_names": [ "phorg", "ATUM WORKS", "ATUM Works" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/919432869b9d7a01cb7d24ccff7380278318f625.png", "website": "https://atum.works/", "all_locations": "San Francisco, CA, USA", "long_description": "", "one_liner": "Gigascale Nanomanufacturing", "team_size": 3, "industry": "Industrials", "subindustry": "Industrials -> Manufacturing and Robotics", "launched_at": 1745346268, "tags": [ "Hard Tech", "3D Printing", "Semiconductors" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Spring 2025", "status": "Active", "industries": [ "Industrials", "Manufacturing and Robotics" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": null, "url": "https://www.ycombinator.com/companies/atum-works", "api": "https://devasheeshg.github.io/yc-api/batches/spring-2025/atum-works.json", "year_founded": 2024, "city": "San Francisco", "country": "US", "linkedin_url": "https://linkedin.com/company/atum-works", "x_url": "https://twitter.com/atumworks", "fb_url": null, "cb_url": null, "github_url": null, "logo_url": "https://bookface-images.s3.amazonaws.com/small_logos/919432869b9d7a01cb7d24ccff7380278318f625.png", "app_video_url": null, "dday_video_url": null, "company_photos": [], "primary_partner": { "name": "Garry Tan", "url": "https://www.ycombinator.com/people/garry-tan" }, "founders": [ { "user_id": 1884492, "full_name": "Lucas Pabarcius", "title": "Founder/CEO", "founder_bio": ".", "is_active": true, "linkedin_url": "www.linkedin.com/in/lucas-pabarcius-ba3595167", "x_url": "", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/0884df112dcac548a238f88c861cec72db25ca32.jpg" }, { "user_id": 1975891, "full_name": "Matteo Kimura", "title": "Founder/CRO", "founder_bio": ".", "is_active": true, "linkedin_url": "https://www.linkedin.com/in/matteo-kimura-90879318b/", "x_url": "", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/e889b9ac0bec382d4d511226cf89459d675ae771.jpg" }, { "user_id": 1884437, "full_name": "Malcolm Tisdale", "title": "Founder/COO", "founder_bio": ".", "is_active": true, "linkedin_url": "https://www.linkedin.com/in/malcolm-tisdale", "x_url": "", "avatar_thumb_url": "https://bookface-images.s3.us-west-2.amazonaws.com/avatars/3589b15041b76034e67feec70fa57fba14af2c76.jpg" } ], "jobs": [], "news": [], "launches": [ { "id": 89753, "title": "Atum Works", "tagline": "3D Lithography Foundry", "body": "\n\n**Problem**\n\n“For the past 50 years, semiconductor-technology development has felt like walking inside a tunnel. The road ahead was clear, as there was a well-defined path. And everyone knew what needed to be done: shrink the transistor. Now, we have reached the end of the tunnel.\"\\\nH.-S. Philip Wong, Chief Scientist, TSMC, 2024.\n\nToday’s 2D lithography has hit a fundamental wall in feature density, so the semiconductor industry has begun stacking 2D layers to fit more transistors, bits, and bandwidth on each chip. \\\n\\\nBut stacking scales cost exponentially with density, unlike the constant cost days of Moore: a 10-layer high bandwidth memory (HBM) package is \\~5x more expensive than the same amount of un-stacked DRAM.\n\n**Solution**\n\nUsing a 3D process to make today's increasingly 3D integrated circuits could shortcut this problem, scaling process complexity with materials rather than layers and enabling the next decade of continued progress.\n\nOur 3D lithography technology can do this: it is capable of fabricating multi-material 3D structures with 100 nm resolution at wafer scale.\n\nWhere the ability to create more complex forms enables more complex functions, such granular control of matter enables the future of much more than just chips, including biotech, sensing, and advanced materials.\n\nWe recently crossed the cost thresholds that make this technology commercially viable. We will be driving an exponential scaling law in the production capacity of this technology over the coming decade.\n\n**Team**\n\n![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXcMsUlRx_bo7xJvNWmZaC-39OI7Hknw0Y65Er2tjyUh54Sd4--EgCih-wQzZojhTUdUgn2OqKfPxVzmnfqnJGprg2qacYS56K-eYqnSh_n3uz75XB9uyCslMaxReWdNHhKkcVHF?key=cch75ExUod4AOIuWU2xY6A)\n\nWe’re a team of physicists and systems engineers from Caltech and NASA, where we previously matured multiple nascent technologies, winning NASA’s Most Visionary Concept and Best Product Development awards.\\\n\\\n**Advisory Board**\\\nDr. H.-S. Philip Wong: Chief Scientist, TSMC
\\\nDr. Eli Yablonovitch: Director Emeritus of the NSF Center for Energy Efficient Electronics Science (E3S)\\\nDr. Julia Greer: Director, Caltech Kavli Nanoscience Institute
 
\\\nDr. Michael Hochberg: Silicon Photonics Pioneer
\\\nDr. Pooya Tadayon: Intel Fellow
", "url": "https://www.ycombinator.com/launches/NLd-atum-works", "votes": 87, "created_at": "2025-04-22T18:46:21.407Z" } ] }, { "id": 30629, "name": "Topological", "slug": "topological", "former_names": [ "TipTop", "TipTop AI" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/2b9c845239fb1f16317889a4a843409e109b24f6.png", "website": "https://www.topological.com", "all_locations": "San Francisco, CA, USA", "long_description": "Topological is developing physics-based foundation models for CAD optimization. We help hardware teams iterate at the same speed that software teams do. Our technology is accelerating the engineering workflow with AI and scales design and optimization to identify the ideal designs for complex problems given their physical constraints with enhanced speed and performance. \r\n\r\nOur first model, UToP-v1, is a SOTA topology optimization model that understands physics, geometry, and manufacturability. It can generate the most efficient design given a problem’s physical requirements. It has <5% compliance error and is 1930x faster than current methods. 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