Paul Copplestone
Angel Investor / CEO & Co-Founder, Supabase
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Supabase CEO/co-founder ($5B valuation, 4M developers); angel investor in ~50 companies. 58% portfolio in developer tools/infrastructure, 38% open-source. Values ecosystem-building and founder-operator co-investing. Thesis: AI expanding developer tools TAM. Focuses on product over investor appeal. Seed-stage angel checks.
Background
Paul Copplestone is the CEO and co-founder of Supabase, the open-source Firebase alternative, and an active angel investor with a portfolio of approximately 50 companies 12. He grew up on a farm near Kaikoura on New Zealand’s South Island and began coding as a teenager 3. He earned a BCom in IT Project Management and E-Business Systems from the University of Canterbury 4.
After graduating, Copplestone worked as a contractor for a hedge fund in Australia and briefly at Accenture before moving to Southeast Asia to pursue entrepreneurship 3. He co-founded ServisHero in 2015, a marketplace connecting homeowners with service providers across Malaysia and Singapore, where he served as CTO 35. He later co-founded Nimbus For Work, an office management platform, also as CTO 5.
Copplestone joined Entrepreneur First’s accelerator program in Singapore, where he met his future co-founder Ant Wilson 3. While building a chat feature for Nimbus using Firebase, he encountered scaling issues, migrated to PostgreSQL, built real-time functionality on top of it, and open-sourced the result 6. The positive reception on Hacker News validated the concept, and in January 2020 he partnered with Wilson to build Supabase 3. They joined Y Combinator’s Summer 2020 batch 7. As of October 2025, Supabase had raised $500 million in total funding at a $5 billion valuation, with over 4 million developers on the platform 8.
Stated Thesis
Copplestone has not published a formal angel investing thesis. However, his personal website describes him as investing in “open source infrastructure and developer tool startups” 1. His portfolio overwhelmingly reflects investments in companies building tools for developers, with a strong preference for open-source projects.
In public statements, Copplestone has emphasized his belief that AI is expanding the developer tools market: he has stated that “it’s pretty clear at this point that AI is enabling more builders” and that “the TAM is rapidly expanding for all developer tools” 9. On building companies, he has said: “I didn’t build the startup for investors. I just built what I thought would be the best product for developers” 6.
Inferred Thesis
Based on 26 verified investments (out of approximately 50 total), the following patterns emerge:
Sector breakdown: Developer tools and infrastructure dominate the portfolio. Of 26 verified investments: 15 are developer tools/infrastructure (58%), 5 are AI/ML platforms (19%), 3 are open-source productivity/collaboration (12%), and 3 are billing/fintech for developers (12%).
Stage distribution: Copplestone invests predominantly at seed stage. Of 17 investments with verified round data: 13 seed (76%), 2 pre-seed (12%), 2 Series A (12%). He participates as one angel among many rather than leading rounds.
Open-source signal: A significant portion of his portfolio companies are open-source or open-core: Cal.com, AppFlowy, Infisical, Resend, VoidZero, Polar, and Supabase itself. This is a strong and consistent pattern — at least 10 of 26 verified investments (38%) are open-source projects.
Founder-operator investing: Copplestone frequently co-invests alongside other founder-operators from the developer tools ecosystem. Recurring co-investors include Guillermo Rauch (Vercel), David Cramer (Sentry), Zeno Rocha (Resend), Michael Grinich (WorkOS), and Elad Gil. This pattern of technical founder-angels investing alongside each other is consistent across multiple rounds.
Geographic distribution: His portfolio companies are primarily US-based, with notable European investments including Mistral AI (France), Lovable (Sweden), VoidZero (Singapore-founded), Polar (Sweden), and Daytona (Croatia).
Notable pattern — ecosystem investing: Many of Copplestone’s investments are in companies whose products complement or integrate with Supabase (e.g., Lovable, Resend, Infisical, Polar). This suggests a thesis partly driven by ecosystem-building around the developer workflow.
Exits: Two known portfolio exits: PeerDB and Mooncake (October 2025) 2. Two portfolio unicorns: Mistral AI and Lovable 2.
Portfolio
| Company | Year | Stage | Source |
|---|---|---|---|
| AgentMail | 2026 | Seed | 10 |
| Shorebird | 2025 | Seed | 2 |
| Lovable | 2025 | Series A | 11 |
| Polar | 2025 | Seed | 12 |
| Infracost | 2025 | Series A | 13 |
| Mem0 | 2025 | Seed/Series A | 14 |
| CodeCrafters | 2024 | Seed | 15 |
| VoidZero | 2024 | Seed | 16 |
| Resend | 2023 | Seed | 17 |
| Infisical | 2023 | Seed | 18 |
| AppFlowy | 2023 | Seed | 19 |
| Daytona | 2023 | Pre-Seed | 20 |
| Cal.com | 2022 | Seed | 21 |
| ~unknown | Mistral AI | – | – |
| ~unknown | Orb | – | – |
| ~unknown | Braintrust | – | – |
| ~unknown | Roboflow | – | – |
| ~unknown | StackBlitz | – | – |
| ~unknown | E2B | – | – |
| ~unknown | Tigris Data | – | – |
| ~unknown | LlamaIndex | – | – |
| ~unknown | ElectricSQL | – | – |
| ~unknown | tldraw | – | – |
| ~unknown | Cap.so | – | – |
| ~unknown | Charm | – | – |
| Mooncake (exit) | ~2025 | – | 2 |
| ~unknown | PeerDB (exit) | – | – |
This table represents approximately 54% of the ~50 claimed investments. For 14 of 27 entries, exact investment year and round could not be independently verified; these are listed with “–” and sourced from aggregator profiles.
In Their Own Words
“I didn’t build the startup for investors. I just built what I thought would be the best product for developers.” — Paul Copplestone, Accel Spotlight On podcast 6
“We center our platform for builders, and builders generally don’t want to be sold to.” — Paul Copplestone, Felicis interview 6
“There’s no point blitzscaling until you’ve actually got a really good product that people want to pay for.” — Paul Copplestone, Accel Spotlight On podcast 23
“Listen to your customers, solve a pain point, and work diligently on that all the time.” — Paul Copplestone, Felicis interview 6
“Shipping speed is certainly becoming a moat for software companies.” — Paul Copplestone, Felicis interview 6
“We hire very good people, a lot of founders who just know what they’re doing.” — Paul Copplestone, Accel Spotlight On podcast 23
“Our biggest moat is just how awesome our community is. You have to keep your community.” — Paul Copplestone, Accel Spotlight On podcast 23
What Founders Say
No independently sourced founder testimonials found about Paul Copplestone’s role as an angel investor. His portfolio founders have not been publicly quoted describing their experience with him as a backer. Given his profile as a founder-operator angel (rather than a full-time VC), founder commentary about his angel investing specifically is limited in public sources.
Sources
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Paul Copplestone personal website, “Full Stack Developer and Entrepreneur,” accessed March 2026. https://paul.copplest.one/↩↩
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Tracxn profile for Paul Copplestone, “2026 Portfolio & Founded Companies,” accessed March 2026. https://tracxn.com/d/people/paul-copplestone/__8zdFmWFh4rsqqcn6VrICAx-JXQVemr3jgOY0pnRTPck↩↩↩↩↩
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Stacksync, “One Word Changed Everything: The Origin Story of Supabase,” accessed March 2026. https://www.stacksync.com/blog/one-word-changed-everything-the-origin-story-of-supabase↩↩↩↩↩
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RocketReach profile for Paul Copplestone, accessed March 2026. https://rocketreach.co/paul-copplestone-email_3484942↩
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NZ Diaspora podcast, “S2 | E3 — Paul Copplestone (Co-founder & CEO at Supabase),” accessed March 2026. https://nzdiaspora.substack.com/p/s2-e3-paul-copplestone-co-founder↩↩
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Felicis, “Paul Copplestone on Building for Builders,” accessed March 2026. https://www.felicis.com/insight/paul-copplestone-supabase↩↩↩↩↩↩
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Y Combinator, “Supabase,” accessed March 2026. https://www.ycombinator.com/companies/supabase↩
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TechCrunch, “Supabase nabs $5B valuation, four months after hitting $2B,” October 3, 2025. https://techcrunch.com/2025/10/03/supabase-nabs-5b-valuation-four-months-after-hitting-2b/↩
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Paul Copplestone on X (@kiwicopple), tweet about AI enabling more builders, February 24, 2025. https://x.com/kiwicopple/status/189425133522432↩
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The Next Web, “AgentMail raises $6M to give AI agents their own email inboxes,” March 2026. https://thenextweb.com/news/agentmail-raises-6m-seed-ai-agent-email-inboxes↩
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Accel, “Accel’s $200M Series A in Lovable: Enabling the Last 99%,” July 2025. https://www.accel.com/noteworthies/accels-200m-series-a-in-lovable—enabling-the-last-99↩
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Polar blog, “Announcing our $10M Seed Round,” June 2025. https://polar.sh/blog/polar-seed-announcement↩
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Infracost blog, “Infracost has raised a $15 Million Series A,” November 2025. https://www.infracost.io/blog/infracost-has-raised-a-15-million-series-a/↩
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Mem0, “Mem0 raises $24M to build the memory layer for AI,” October 2025. https://mem0.ai/series-a↩
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TechCrunch, “Codecrafters wants to challenge seasoned developers with hard-to-build projects,” November 19, 2024. https://techcrunch.com/2024/11/19/codecrafters-wants-to-challenge-seasoned-developers-with-hard-to-build-projects/↩
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VoidZero, “Announcing VoidZero Inc,” October 1, 2024. https://voidzero.dev/posts/announcing-voidzero-inc↩
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Resend blog, “Resend raises $3M,” July 18, 2023. https://resend.com/blog/resend-raises-3m-seed-round↩
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Infisical blog, “Infisical $2.8M Seed Round,” July 4, 2023. https://infisical.com/blog/infisical-seed-round↩
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Finsmes, “AppFlowy Raises $6.4M in Seed Funding,” November 2023. https://www.finsmes.com/2023/11/appflowy-raises-6-4m-in-seed-funding.html↩
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Daytona blog, “Daytona Raises $2M in Pre-Seed,” November 2023. https://www.daytona.io/dotfiles/daytona-raises-2m-in-pre-seed↩
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Cal.com blog, “Cal.com raises $7.4m Seed,” September 2022. https://cal.com/blog/seed↩
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Premier Alternatives, “Paul Copplestone - ANGEL Profile, Portfolio & Investments,” accessed March 2026. https://www.premieralts.com/investors/paul-copplestone↩
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Accel podcast, “Supabase’s Paul Copplestone on the difference between ‘playing startup’ and strategy,” accessed March 2026. https://www.accel.com/podcast-episodes/supabases-paul-copplestone-on-the-difference-between-playing-startup-and-strategy↩↩↩