Demetrios Zoppos
Partner @ 33East
London, United Kingdom
Demetrios Zoppos is a seed investor at 33East in London focused on Internet and Internet of Things. Demetrios is an entrepreneur and investor. He’s a founding Partner of VC firm 33East. Demetrios has co-founded several startups, including GF-X, onefinestay, and Klevio. He is an angel investor and a limited partner in several venture funds. He holds an MPA from Harvard Kennedy School and an MA in Economics from Cambridge.
- Total investments:
- 7
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Demetrios Zoppos invests in
Stages Demetrios Zoppos invests in
Countries Demetrios Zoppos invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $500k–$1.8M
- Pre-Seed
- $318k–$4M
Investment Focus
Industry
- Internet 2 (29%)
- Internet of Things 2 (29%)
- SaaS 1 (14%)
- Energy 1 (14%)
- FinTech 1 (14%)
Stage
- Seed 4 (57%)
- Pre-Seed 2 (29%)
- Angel 1 (14%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| xmemory is an AI‑focused startup working on advanced, structured memory architectures for AI agents and large‑language‑model (LLM) systems. It provides a specialized AI infrastructure layer that enables AI agents to transition from stateless to stateful by implementing a structured, hierarchical memory architecture. | $4M / Pre-Seed / Mar 18, 2026 | ||
| Switchd they ensure our customers are on the best energy deal, hassle free, forever. We switch people automatically so it's always hassle-free saving! | $642.9K / Angel / Feb 11, 2019 | ||
| Our vision is to make every trip perfect. By building a future in which travel is seamless. Impala connects room sellers and hotels, instantly. We empower you to build, innovate and sell. We are the infrastructure that enables sellers to build better products, faster. Unlike bed-banks or affiliate schemes, you can get started in 30 seconds. OurBooking API is a mega-channel that attracts more bookings for hotels without having to pay integration fees or police rate parity. | $1.8M / Seed / Apr 24, 2018 | ||
| Klevio builds smart technology that will change the way people control access to offices, homes, and apartment buildings. Klevio enables users to open doors via an app on their mobile phone, meaning they no longer need to carry keys and that they can let people in when they’re not there as well as distribute virtual keys so people can letthemselves in via the app on their own phone. | Seed / Sep 30, 2017 | ||
| Home Run is a real-time online grocery fulfillment service helping retailers reach more customers faster and cheaper. Customers can login to Home Run's website or mobile app, fill up their basket from their favorite supermarket and have their order delivered to their door in as little as 60 minutes.Home Run was founded in 2014 and isheadquartered in London, England. | $1.4M / Seed / Apr 25, 2017 | ||
| Plum Fintech is the developer of Plum, a smart money app. Founded by Victor Trokoudes and Alex Michael in 2016, Plum automates the parts of personal finance that people find difficult or don’t have time for, with effortless saving, empowered spending and accessible investing. It offers the best financial products to help customers grow their moneyfor life, from pensions to tax-wrappers. Today, Plum has helped 2m people across Europe and has expanded to 10 countries. The team of 200+ are based in the company's London HQ as well as offices in Athens, Greece and Nicosia, Cyprus. | $500K / Seed / Oct 10, 2016 | ||
| Weaver is a platform that matches main contractors to vetted residential projects. We check that homeowners are tender-ready, have full design information and are serious about their project reducing time wasted with prospects that lead to nothing. Contractors input their business preferences and we’ll match them to an abundance of work that suittheir ambitions so they don’t need to run the sales & marketing department alone. | $318K / Pre-Seed |
Co-Investors
About 33East
We invest in pre-seed and seed stage startups, with tickets from €100k up to €1m.
33East Contacts
| Name | Phone | Socials | |
|---|---|---|---|
|
Demetrios Zoppos
Partner
|
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FAQ
What does Demetrios Zoppos invest in?
Demetrios Zoppos invests primarily in Internet, Internet of Things and SaaS startups, most often at Seed and Pre-Seed stage. Most of the 7 investments tracked by Shizune back companies in United Kingdom. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Demetrios Zoppos's check size?
Demetrios Zoppos typically joins rounds of $500k–$1.8M at Seed and $318k–$4M at Pre-Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Demetrios Zoppos participates in.
How do I contact Demetrios Zoppos?
Public channels for Demetrios Zoppos include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Demetrios Zoppos last invest?
The most recent investment recorded for Demetrios Zoppos closed in Mar 2026. Shizune tracks 7 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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