Panagiotis Papadimitriou

Senior Director of Engineering at Meta

📍 United States🔄 Updated September 2026💼 4 investments📅 8 years investing🗓 Last invested Jan 2026
Operator-angel🌍 United States
4
Total investments
3
Early stage
0
Mid stage
1
Late stage
8y
Years active

Portfolio

4 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Angel Investor
2026
We build AI agents that learn how a business operates, then automate the work. AI models are intelligent but generic. Every business runs on specific processes that live in peoples heads, stale documents, and ticket histories. Our AI agents reverse-engineer how a business actually runs from existing systems and create executable knowledge: structured, white-box instructions agents can act on. We’re a Series A startup, backed by Sequoia and other leading VC firms. And we’re hiring in New York and London.
Angel Investor
2023
Wikifarmer is a leading digital ecosystem transforming global agri-food supply chains through education and access to international markets. We bridge knowledge gaps and streamline business operations for farmers, suppliers, and buyers worldwide with our comprehensive suite of tools: - Worlds largest agricultural knowledge base, offering sustainable knowledge for farmers at every scale - Dynamic B2B marketplace directly connecting agricultural suppliers with qualified buyers, eliminating inefficient intermediaries - Specialized Agricultural Academy delivering expert-led training to build sustainable farming skills and business acumen Wikifarmer is revolutionizing how agricultural stakeholders access information, find partners, and grow their businesses in the global market.
Angel Investor
2021
λ-automata is a seed-stage startup working on autonomous technologies for addressing national security challenges in the EU and its allies. We bring the vibrant and fast-paced culture of VC-funded startups to the EU defense industry.
Angel Investor
2018
We believe amazing companies start with amazing people. As an all-remote company, we know those people come from all over the world. Ergeon was founded and is run today by two CS Ph.D. serial entrepreneurs that share a deep passion for utilizing technology to improve how people work. We create innovative technologies that help consumers, contractors, and our all-remote staff excel. Using proprietary technology coupled with operational excellence we are building the largest, most customer-friendly construction company in the world. We own the consumer-contractor relationship end-to-end. Our ‘tech stack’ delivers a seamless experience for consumers and contractors. Starting with outdoor home improvement, we install the highest quality fence and hardscape. In time we will scale to larger and more complex building projects. We have a fast-growing and diverse team spread across 40+ countries today. We go to great lengths to ensure that our workforce, everywhere in the world, has access to career growth, an amazing work culture, and great benefits. Come join us to transform the construction industry.
early stageConstruction
Experience · 6 entries
All (6)
Investments (4)
Founder (1)
2026
Angel Investor
2026
We build AI agents that learn how a business operates, then automate the work. AI models are intelligent but generic. Every business runs on specific processes that live in peoples heads, stale documents, and ticket histories. Our AI agents reverse-engineer how a business actually runs from existing systems and create executable knowledge: structured, white-box instructions agents can act on. We’re a Series A startup, backed by Sequoia and other leading VC firms. And we’re hiring in New York and London.
2023
Angel Investor
2023
Wikifarmer is a leading digital ecosystem transforming global agri-food supply chains through education and access to international markets. We bridge knowledge gaps and streamline business operations for farmers, suppliers, and buyers worldwide with our comprehensive suite of tools: - Worlds largest agricultural knowledge base, offering sustainable knowledge for farmers at every scale - Dynamic B2B marketplace directly connecting agricultural suppliers with qualified buyers, eliminating inefficient intermediaries - Specialized Agricultural Academy delivering expert-led training to build sustainable farming skills and business acumen Wikifarmer is revolutionizing how agricultural stakeholders access information, find partners, and grow their businesses in the global market.
2021
Angel Investor
2021
λ-automata is a seed-stage startup working on autonomous technologies for addressing national security challenges in the EU and its allies. We bring the vibrant and fast-paced culture of VC-funded startups to the EU defense industry.
2018
Angel Investor
2018
We believe amazing companies start with amazing people. As an all-remote company, we know those people come from all over the world. Ergeon was founded and is run today by two CS Ph.D. serial entrepreneurs that share a deep passion for utilizing technology to improve how people work. We create innovative technologies that help consumers, contractors, and our all-remote staff excel. Using proprietary technology coupled with operational excellence we are building the largest, most customer-friendly construction company in the world. We own the consumer-contractor relationship end-to-end. Our ‘tech stack’ delivers a seamless experience for consumers and contractors. Starting with outdoor home improvement, we install the highest quality fence and hardscape. In time we will scale to larger and more complex building projects. We have a fast-growing and diverse team spread across 40+ countries today. We go to great lengths to ensure that our workforce, everywhere in the world, has access to career growth, an amazing work culture, and great benefits. Come join us to transform the construction industry.
early stageConstruction
2013
Principal Data Scientist / Architect
2013
oDesk is now Upwork, the world’s largest freelancing website. Visit us at https://www.linkedin.com/company/upwork.
Show all 6 entries ↓
Investment activity
2018–2026 · 4 investments
20181202112023120261
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