Entrepreneurs First @join_ef
Entrepreneurs First invests in exceptional individuals to build startups from scratch. joinef.com Joined August 2011-
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Followers46K
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Following1K
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When we first met Jean and Patricia, @BubbleRobotics did not exist. Jean was in Milan, Patty was in Zurich. They did not know each other yet, but they were both looking for the same thing: a cofounder to build a deeply technical, ambitious company with. In October 2024, they joined EF. They met at our kick-off weekend and teamed up immediately. A few weeks later, after exploring multiple ideas in agriculture and recycling, they landed on the ocean. That became Bubble Robotics: autonomous robotic systems that can stay at sea, inspect offshore infrastructure, monitor critical assets, and collect underwater data continuously. From ideation at EF, to San Francisco, to building their first robot in a pool, to raising a $5M pre-seed round, it has been incredible to watch the pace of this team. Proud to have backed Jean and Patty from the very beginning.
We're coming to Berlin this Saturday! @CherryVentures and @join_ef will host people seriously considering founding, but not quite ready to go full-time yet. Apply here: luma.com/satclub-berlin
Women's demo night III a few nights ago at the @airwallex offices Feeling blessed to host these with my team. This time round we met some amazing builders in: - Personal safety, working with UK police - Proactive voice for at-home care - Context for AI tools & two brilliant founders from our cohort building in space compute and personalised AI Vamos! ❤️🔥 @join_ef
May was another big month across the EF portfolio. Here’s what our companies announced: - Scope AI raised $20M led by Index Ventures to build the future of inspection and the AI-native paradigm for the 10x inspection engineer. - Standard Intelligence raised $75M from Sequoia and Spark to build models that explore and learn like humans do. - Certo raised a $4M Seed led by Daphni to build the AI-powered compliance operating system for beauty and consumer goods brands. - Asterix Health raised a £2.1M pre-Seed led by TriplePoint VC to expand remote GP services for UK healthcare providers. - Bluevia Health is collaborating with Mayo Clinic Platform to make perioperative care safer with AI. - Supahost AI exited stealth with Guest Messaging Autopilot, an autonomous AI agent for property managers, after handling 1M+ guest messages and saving 35k+ hours across pilot hosts. - Lucentia came out of stealth to build the “mammogram of the heart”: AI software that transforms routine cardiac CT scans into richer coronary diagnostics. Bring on June.
First-time founders are often quick to conviction and slow to validation. Second-time founders are usually the opposite. They’ve seen what it takes to build, they know how hard it is and they can validate fast. But choosing what to spend the next decade on can take longer. That’s what this evening is about: luma.com/entrep-egtl
Certo has raised a $4M Seed round led by Daphni to build the AI-powered compliance platform for beauty and consumer goods brands. Founded by Bastien and Jean, Certo helps regulatory teams review products across ingredients, formulas, claims, labelling and market entry, turning a process that can take days into minutes. The platform is already used by leading beauty and CPG companies across Europe and the US to navigate growing regulatory complexity across 40+ markets. Proud to back this team from day zero at EF.
Scope AI has raised $20M led by Index Ventures to build the future of inspection. Inspection is the most common way physical data is collected, underpinning the integrity, operation, and safety of every industry. Yet the software these inspections run on hasn’t changed in 20 years. Founded by Jonathan Low and Jakob Cassiman, Scope is building the AI-native paradigm for the 10x inspection engineer to speed up industrial inspection workflows, from reporting to asset integrity. Proud to back Jonathan and Jakob from day zero at EF.
We hosted 300 of SF’s best VCs in our office two weeks ago. 17 teams took the stage to share their story and ambition. If you missed our April 26 Demo Day, the full recording is now available: youtu.be/pbevtn0Beg4
Very few people have seen my childhood magic tricks. I found old clips of me doing judo, making random videos, and taking card tricks way too seriously. That obsession is the job. We’re hiring creators at @join_ef. London + SF. If you made holiday edits, Fortnite montages, or random internet videos before anyone cared, DM me.
@join_ef just kicked off one of its biggest cohorts ever last week. After spending the last 6 months carefully selecting and curating every individual in this batch, I now get to work closely with ~100 exceptional folks coming together to build from scratch.
Helicon is building autonomous factories to mass produce carbon fiber parts for unmanned systems. Their platform, Argos, runs the full composite engineering loop automatically, connecting DFM, mold design, simulation, quoting, manufacturing, and quality inspection into one system. It turns composite production from a manual, artisanal process into a scalable one, collapsing lead times and unlocking the industrialization of composites. Their mission: accelerate the world's transition to advanced materials. Meet @alexnhaus and Edmundo
Asterix Health has raised a £2.1M pre-seed round led by TriplePoint VC to expand remote GP services for UK healthcare providers. Proud to back Julian & Max from day zero at EF.
Lucentia (@Sahar_Jal) is coming out of stealth to build a new generation of heart imaging.
- Icarus Robotics partnered with Voyager Technologies for JOYRIDE-1, its year-long free-flying robotics deployment to the ISS, scheduled for early 2027
The most important updates aren’t always fundraises. Here’s what else happened across the EF portfolio 🧵
Nathan Benaich @nathanbenaich
71K Followers 35K Following solo member of superinvestment staff @airstreet @airstreetpress @stateofai @raais
Matt Clifford @matthewclifford
39K Followers 2K Following Co-founder @join_ef; Chair @ARIA_Research; Make Britain Rich Again.
Anna Gát 🧭 @TheAnnaGat
35K Followers 4K Following Art Philosopher • Founder-CEO of salon platform @interintellect_ • Bio: https://t.co/h6zEGcDxdp • Words: https://t.co/oeH3uO0nNF • Podcast: @thehopeaxis
Gil Dibner @gdibner
21K Followers 5K Following Trying to help the few do the impossible; building @angularventures. Early stage. Enterprise. Deep tech. EU+IL. 🇮🇱🇺🇦🇪🇺🇺🇸
Amy Lewin @amyrlewin
20K Followers 1K Following Editor @siftedeu, covering startups and tech, backed by the FT | [email protected] | For our latest, greatest stories, sign up to our newsletters 👇
Christoph Janz 🕊 @chrija
46K Followers 21K Following Founder @pointninecap. Seed investor @algolia, @contentful, @factorialhr, @incident_io, @loom, @nexhealthhq, @poolsideai, @typeform, @vercept_ai, @zendesk
Charlie 'Ramen Space�... @charlierward
11K Followers 3K Following building london’s best founder coworking space https://t.co/NnTcIrsFji | stoking optimism https://t.co/5zyqmuzSEC | weekly pod https://t.co/utoFTH1JSF | 🇬🇧/acc
Mike Butcher (BlueSky... @mikebutcher
137K Followers 16K Following Founder & Editor, @Pathfounders | Formerly @TechCrunch | [email protected] | @mikebutcher.bsky.social | Signal mikebutcher.04 | https://t.co/JepXg7SOFj (MBE)
Tom Blomfield @t_blom
77K Followers 923 Following Partner at @ycombinator Cofounded @gocardless and @monzo
Maren Bannon @Maren_Bannon
14K Followers 2K Following Engineer turned founder and VC | Cofounder/GP @January_VC | Investing in overlooked founders | Contributor at @Forbes | SF native living in Europe
June Angelides MBE �... @JuneAngelides
15K Followers 6K Following Non-linear is the new normal. Founder of The Portfolio Method. Investor. Board member. Author. MBE. My Views
Sarah Drinkwater 🔮 @sarahdrinkwater
18K Followers 2K Following looking for brilliant people building the next big thing, solo gp @_CommonMagic
Check Warner @checkwarner
13K Followers 2K Following Partner, Ada Ventures. We find and fund extraordinary talent. Co-founder of Diversity VC. Views my own. Write: https://t.co/kqQtFhJFKa
Sifted @Siftedeu
36K Followers 3K Following In-depth reporting on startup Europe, for startup Europe. 🇪🇺 Subscribe to Sifted Pro for vital market intelligence: https://t.co/M3g11175y3
Joe Perkins @joeprkns
6K Followers 4K Following making and breaking things || building @amy__ai - the ai agent for private market investors
Connor Murphy 🌁 @ConnorPM
12K Followers 2K Following Building bridges and connecting people @BrdgApp. Prev: MD @Techstars, CEO @Datahug (acq. @SAP),@PA_Consulting, @SunMicrosystems, Jamaican Fire Brigade
Matt Wichrowski @mattwichrowski
2K Followers 239 Following First check / deep tech VC | General Partner @flyvc
Madeline Lawrence @madelinelawren
3K Followers 2K Following an acquired taste since '97 🪩 | co-founder @aikidosecurity
Xander Solana @SoloXanderSOL
27 Followers 193 Following Solo Developer building a Web3 sci-fi strategy game on Solana 🎲 · 🤖 AI is my entire studio · 🧠 0 code knowledge ➡️ Ship · 🚀 Build (and launch!) in public 👀
Suhani Gupta @guptas6866
0 Followers 21 Following
Umut @umut_akarsuu
38 Followers 596 Following
Matt @galawarrior172
93 Followers 1K Following
Mary Long @marykslong
3 Followers 126 Following Engineer: Software, Data Science, Math, Machine Learning; Doctoral Candidate Integrative Medicine: Nutrition, Ayahuascha, Dance, Yoga, Pilates, Reiki, Travel 🎭
Haroffah 🇬🇭🇳... @HAROF97
591 Followers 4K Following Building Operating System for African High Schools | Proud Husband ét Dad ✌️ | 4x AWS COMMUNITY BUILDER | GGMU ♥️
wanlin guo @lynseyguo
12 Followers 324 Following -1 to 1, global product builder, blogger, AI, deeptech , former PM @tiktok
Shivang Singh @_ShivangSingh
33 Followers 2K Following
Alisa @AMK_0x
42 Followers 283 Following
Arun Skandav @ArunSkandav
10 Followers 112 Following Learning DevOps in public. Mobile apps • AI • Testing • Reviews
Lawand Soran @LawandOps
12 Followers 103 Following Building the AI Operating System for operations | Founder @OpsRadar | Autonomous agents + real-time visibility so founders actually step away | Voice of agency
DouDou_HMD @DouDou_HMD
40 Followers 768 Following
David @dayonefoundry
6K Followers 802 Following Co-Founder @HackerResidency Building a Basecamp for AI-Native Founders YT Sponsor Intelligence: @SponsorRadar 2x VC Backed Founder turned Indie Hacker 30k on YT
Brandon Simpson @surfnscale
18 Followers 190 Following Founding team, Principal Architect @ Platform Science Founder @ https://t.co/Ap5jW6rSPt - The AI platform for automating small businesses
Sangram Navale @sangram_navale
39 Followers 733 Following Memory Systems Validation @ Micron Technology, Inc. Systems Programming | Semiconductors
Arjun Shah 🇮🇳�... @arjunkshah21
130 Followers 438 Following check out the worlds best design tool https://t.co/ON97vEA7GE
Capital de Venturé @capitaldventure
0 Followers 20 Following A premiere startup accelerator and venture capital firm.
Adeyemi Victor Olamid... @SnapchatHackwrd
0 Followers 57 Following Most professional groups die from operational entropy. Building Ritual to stop that. Pre-seed. Nigeria → World.
Max Yang @ilovecarrots_ah
24 Followers 62 Following 3 yrs in export trade · China sourcing · suppliers · AI
nedia kiabu @theKiabu
2K Followers 5K Following Turning Roots into Rockets 🚀 | Growth | Nature | Mindset |
Daniel Lo @dlosworkflow
0 Followers 16 Following
Anish @anishsarkars
302 Followers 295 Following build & design • member @athenaf0ss • prev intern @intervueio @drdo_india @mutasocial
Rukmesh Pilla @Ryuytyuu
13 Followers 302 Following Building @MedsynAi for Physiatrists and therapists
Ariel @rajmaliuk
120 Followers 309 Following Made in Argentina 🇦🇷 Co founder @ https://t.co/UiY3i7SDji & https://t.co/a0XmZwCl8p
Molly-Kate Vickers @mkvickers1
160 Followers 1K Following
skimi @0xSkimi
332 Followers 788 Following building @joinincore | creating art @ https://t.co/YomP9KsTDu
Franek @Macallanbleu
0 Followers 19 Following
Andrea @andreacicuX
2 Followers 87 Following Building and learning from builders. Exploring Disruptive Deep Tech.
Danny Tang @dannywinson1
111 Followers 857 Following Founder @TradataAI | ex @RGA_RE @EddidFinancial | AI agent for non-QM underwriting to help stop losing 30%+ deals to your faster competitors
CodeQuity @CodequityOrg
70 Followers 195 Following We back bold Entrepreneurs by providing curated pipelines – from Hackathon repo to on-chain revenue . Founder @_karbansal2006
Sidhant Goyal @SidhantGoyal8
40 Followers 210 Following Founder @GetGrowthOS • EIR @join_ef • Engineering @GetArtisan • Ex-Engineering @AmericanExpress • Founding Eng. @Junio • Student Programs @MLH @IEEE
Mumuksh Tayal @MT1699
103 Followers 158 Following Building Physical AI | Reinforcement Learning | Masters Research @ IISc | IIT Gandhinagar '24
Yana Basaranovich @YBasaranovich
1 Followers 116 Following PR mentor & Fractional CCO Helping founders be understood Speaker | Brand strategist 20+ yrs in global comms
Darius Grigaliunas @AIDarius_
54 Followers 657 Following 22K+ followers on LinkedIn Now building AI community on X from 0 Building AI trainings with video avatars for multilingual markets
Amy Lewin @amyrlewin
20K Followers 1K Following Editor @siftedeu, covering startups and tech, backed by the FT | [email protected] | For our latest, greatest stories, sign up to our newsletters 👇
James Clark 📈📉�... @mr_james_c
14K Followers 705 Following Grumpy Optimist | Marketer | Capitalist Founder of @buzzthetower_hq
Mike Butcher (BlueSky... @mikebutcher
137K Followers 16K Following Founder & Editor, @Pathfounders | Formerly @TechCrunch | [email protected] | @mikebutcher.bsky.social | Signal mikebutcher.04 | https://t.co/JepXg7SOFj (MBE)
Tom Blomfield @t_blom
77K Followers 923 Following Partner at @ycombinator Cofounded @gocardless and @monzo
June Angelides MBE �... @JuneAngelides
15K Followers 6K Following Non-linear is the new normal. Founder of The Portfolio Method. Investor. Board member. Author. MBE. My Views
Sarah Drinkwater 🔮 @sarahdrinkwater
18K Followers 2K Following looking for brilliant people building the next big thing, solo gp @_CommonMagic
Check Warner @checkwarner
13K Followers 2K Following Partner, Ada Ventures. We find and fund extraordinary talent. Co-founder of Diversity VC. Views my own. Write: https://t.co/kqQtFhJFKa
Sifted @Siftedeu
36K Followers 3K Following In-depth reporting on startup Europe, for startup Europe. 🇪🇺 Subscribe to Sifted Pro for vital market intelligence: https://t.co/M3g11175y3
Matt Wichrowski @mattwichrowski
2K Followers 239 Following First check / deep tech VC | General Partner @flyvc
Fred Destin @fdestin
48K Followers 2K Following Founder @Stride_VC. Thriving on Chaos. Lead VC on @hofy @cazoouk @pillpack @deliveroo @zoopla @integralads @currencycloud etc.
Oli Barrett @OliBarrett
27K Followers 21K Following Presenter, host, and serial founder @TOTScampaign @CleanandCool @StartUpBritain @10xFiverYE @VIYproject https://t.co/JBKdabjWx3
Eze Vidra @ediggs
19K Followers 2K Following Co-founder & Managing Partner @RemagineV 💼 Investing in next-gen consumer and the technologies behind consumer trends (AI) Split my time between LDN and TLV
Robin Wauters @robinwauters
55K Followers 21K Following European tech ecosystem builder. @Profoundo_com (strategic comms + startup advisory) + Board @ European Startup Network / Investor @SyndicateOneVC + EWOR
Rob Moffat @robmoff
24K Followers 3K Following Partner at Balderton Capital in London. We are a multistage venture firm backing the best founders in Europe from seed to IPO. Formerly Google & Bain.
Danielle Strachman �... @DStrachman
26K Followers 5K Following Bringing freedom & autonomy to young people. Built @thielfellowship and @1517fund. First investor @lambdaAPI @loom @Mach_Industries @RainmakerCorp @positron_ai
seedcamp @seedcamp
75K Followers 4K Following Partnering with Europe's most exceptional founders from day one.
James Wise @Jameswise
18K Followers 4K Following Partner @Balderton. Investing in AI, health and energy. Chair of UK Sovereign AI. Author of Start-Up Century. Mostly Generative.
Publer @publer
74K Followers 180 Following Your ultimate social media management platform 💚 Plan, Schedule, Collaborate, Analyse & Report Explore Publer for free: https://t.co/7mwhUROkS5
TBPN @tbpn
651K Followers 967 Following Technology's daily show. Hosted by @johncoogan & @jordihays. Streaming live 11a-2p PT every weekday. Sign up for TBPN's daily newsletter at https://t.co/Nhf5ohjInO.
Noemi Walzebuck @nwalzebuck
270 Followers 575 Following
Rich Hewes @RichHewes
509 Followers 1K Following Co-founder, Writer & Community Builder @thesubthread | curious about what’s next | video game obsessed | former CEO @digitalfrontier
Ben Mills @iambenmills
126 Followers 212 Following Creator of sorts... MA in cinematography, try to paint too.
The Bridge @jointhebridge
3K Followers 153 Following Entrepreneurs First SF residency. For founders who want to build massive companies.
Visa is doing marketi... @visakanv
171K Followers 224 Following Focus on what you want to see more of. 💪🏾❤️🔥 buy my ebooks ▲ FRIENDLY AMBITIOUS NERD ▲ (https://t.co/ilqQnEHTOz) and ꩜ INTROSPECT ꩜ (https://t.co/K7oSiNofSa)
Claren @clarenai
43 Followers 10 Following The AI powering in-house legal teams. Instant legal guidance, living playbooks, lightning-fast contract review and one pane of glass to track everything.
1517 Fund @1517fund
22K Followers 458 Following We back dropouts, renegade students, and deep tech scientists at the earliest stages, before anybody else. Want to chat? Reach out:👇
redalpine @redalpine
2K Followers 598 Following redalpine provides venture capital to highly scalable European startups. We are #empoweringGameChangers
PolyAI @polyaivoice
9K Followers 183 Following PolyAI helps enterprises show up as the best versions of themselves in every conversation.
David O ❄️ @david_hola_
1K Followers 1K Following Irish 🇮🇪 Investor @join_ef - ex @NostosGenomics @PointNineCap @seedcamp - Human Genetics ‘20 $ILM
Zama @zama
273K Followers 3K Following Zama is an open source cryptography company that builds state-of-the-art Fully Homomorphic Encryption (FHE) solutions for blockchain.
James Terry @phatjme
250 Followers 54 Following product builder, designer & mediocre developer. co-founder & CPO @thedishpatch
Nikola Mrkšić @nikola_mrksic
2K Followers 415 Following CEO of PolyAI - the world's best dialog agents for building the conversational enterprise @polyaivoice
Society for Technolog... @sotalikesfuture
1K Followers 3 Following The cross-disciplinary community for Britain's most promising scientists, engineers & technologists building things that matter.
Leon Farrant @farrant_leon
185 Followers 2K Following Entrepreneur - Merging the best technology with the best humans; for the best.
Staple @staple_sg
54 Followers 75 Following Document processing regulators can verify. Every extracted field is defensible. Trusted by enterprises in 58 countries. SOC 2 | ISO 27001 | https://t.co/0kT9Nn43vS backed.
Lionel Mora @lionel_mora
270 Followers 341 Following Repeat Founder. Ex @Google. I like deep tech, consumer and creativity. Currently building AI worthy of childhood👇
Peppy @peppy_health
1K Followers 589 Following Peppy is the leading health app that connects employees to real, human health experts 📱 When no one else gets it, get Peppy.
Arctas @Arctasgov
4 Followers 1 Following
Marco Mascolo @_marco_masc
118 Followers 147 Following Engineering is a primitive form of biology, we do not understand biology yet, so we work with what we can. Building @ Hanomi || x NASA || x F1
Cube AI @getcubeai
15 Followers 4 Following The AI employee for logistics @victor_plce @sachaichbiah @louisdebenoist
Kortix @kortix
9K Followers 4 Following Your Company`s AI Command Center One place to build, run, and govern your AI-native company
Elizabeth Chan @elizabethchansw
16 Followers 44 Following Co-Founder & CEO at Neptune Robotics @RoboticsNeptune, Entrepreneur First @join_ef, Makers @makersacademy
Mostafa elSayed @mostafa_eSayed
420 Followers 644 Following Cofounder @automata_tech | making #robotics more affordable & accessible | reformed architect & designer
Sebastiaan de Vries @basdvries
493 Followers 988 Following Founder of Limbic. Working on improving therapy experience for therapists and their patients
Chinmay Bharti @chhinna00
444 Followers 512 Following Co-Founder & CTO @CodeAntAI (YC W24) @ycombinator, @iitbombay
Luke Nascimento @lukenascimento
100 Followers 416 Following building autonomous services businesses prev co-founder Arctas (acq)
Hugging Face @huggingface
699K Followers 222 Following The AI community building the future. https://t.co/TpiXQMQ9rZ
Thibaud MARTIN @MARTINThibaud
271 Followers 447 Following Entrepreneur - altrove / materials x AI Former co-founder at @jubiweeapp (acq)
Laz Kopits e/ let’s... @lazkopits
223 Followers 248 Following failed founder, gentleman scientist, abundance enthusiast
Ellery Buntel @ElleryBuntel
86 Followers 91 Following Co-founder & CTO of Telepath Technologies Optimistic technologist, transhumanist, mad scientist without the madness
Secret Leaders @secretleaders1
2K Followers 377 Following UK's top startup podcast. We interview the world’s most exciting founders & entrepreneurs. Listen: https://t.co/Ltf3gx6PUM
Vatsal Aggarwal @vatsal_aggarwal
601 Followers 568 Following 🐰 cto @metavoiceio. built alexa’s first deep learning voice. maths @ cambridge.
Siddharth Sharma @sidroopdaska
335 Followers 952 Following Making voice AI as natural as talking to a person @metavoiceio. Prev: @wayve_ai, @microsoft.
Arthur Mensch @arthurmensch
60K Followers 853 Following Co-founder and CEO @MistralAI. Talk to le Chat https://t.co/ZMZG8rAlWz https://t.co/ydSK6xG4Ce https://t.co/b1uf0UK5U8
Mistral AI @MistralAI
183K Followers 2 Following Frontier AI in your hands. https://t.co/VdyEwpQsiy Apps: https://t.co/1vZA5XdBYo https://t.co/rj5G4u5sHu
Jimini AI @Jimini_AI
22 Followers 1 Following Contributing to Jimini - a cutting-edge AI for legal professionals. Join the beta: https://t.co/vB6Fyeqvdl































