Alessio Fanelli
Principal, Investment & Research @ 645 Ventures
New York, United States
Alessio Fanelli is a seed investor at 645 Ventures in New York focused on Software and Information Technology. Alessio Fanelli serves as a Principal of Investment and Research at 645 Ventures. Based in San Francisco, he leads 645’s investments in startups powering the Engineering Value Chain Revolution.Prior to joining 645, Alessio founded Smart Torvy, an open-source home automation startup. He has led engineering efforts at various early-stage startups,helping them scale from seed to growth stages.Alessio received his B.A. in Computer Science from the University of Rome II - Tor Vergata.
- Total investments:
- 9
- Last investment:
- Lead investor:
- 67%
Last updated:
For AI agents: llms.txt
Industries Alessio Fanelli invests in
Stages Alessio Fanelli invests in
Countries Alessio Fanelli invests in
Investment Focus
Industry
- Software 3 (33%)
- Information Technology 3 (33%)
- Internet 2 (22%)
- Apps 1 (11%)
- SaaS 1 (11%)
Stage
- Seed 4 (44%)
- Series A 4 (44%)
Country
- United States 6 (67%)
- Czech Republic 1 (11%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Veris AI
|
Veris AI is an end-to-end platform designed to train and test AI agents using high-fidelity, dynamic simulation environments. The platform enables AI agents to learn by doing—interacting with realistic, enterprise-specific scenarios rather than relying solely on prompt engineering or static, human-generated data. This experiential approach allowsenterprises to safely develop, evaluate, and improve AI agents for complex tasks, supporting reinforcement learning and continuous improvement before agents are deployed in production environments. | $8.5M / Seed / Jun 03, 2025 | |
Brightwave
|
Brightwave is a deep technology firm formed by engineers with over 20 years of experience in machine learning and artificial intelligence. | $15M / Series A / Oct 29, 2024 | |
E2B
|
E2B is constructing the cloud for AI bots a platform and architecture that allows AI bots to operate freely and as first-class citizens. | $11.5M / Seed / Oct 18, 2024 | |
|
Brightwave
|
Brightwave is a deep technology firm formed by engineers with over 20 years of experience in machine learning and artificial intelligence. | $6M / Seed / Jun 11, 2024 | |
3Box
|
3Box storage is simple, secure, and private by design. Apps that store data with users on 3Box are lighter, more trustworthy, and enjoy reduced data management liability. | $30M / Series A / Feb 16, 2022 | |
Ceramic Network
|
Ceramic Network is a provider of protocols for decentralized and composable data applications. The network decentralizes application databases, making data universally composable and reusable across applications. It consists of three core parts: a highly-scalable, decentralized infrastructure for data availability and consensus, a marketplace ofcommunity-created data models, and a suite of standard APIs for storing, updating, and retrieving data from those models. | $30M / Series A / Feb 16, 2022 | |
Launchable
|
Launchable is an intelligence platform layer for all software testing that shortens wait times for testing, speeds up and optimizes CI pipeline efficiency, leading to shipping higher-quality software faster. Through machine learning in Lauchable’s SaaS, developers and Dev teams can test what matters and find bugs faster, reduce risk, increasecommit frequency, and decrease time-to-production, all leading to Continuous Quality. Test what matters at launchableinc.com | $9.5M / Series A / Jul 27, 2021 | |
Judy Security
|
Judy Security is a cyber security company servicing small and medium businesses. The company's technology Judy uses a secure and private vault to create, store and protect all their passwords, keeping unauthorized users out of their login data. | $2.7M / Seed / Sep 10, 2020 | |
|
Judy Security
|
Judy Security is a cyber security company servicing small and medium businesses. The company's technology Judy uses a secure and private vault to create, store and protect all their passwords, keeping unauthorized users out of their login data. | $2M / Seed |
Co-Investors
About 645 Ventures
645 Ventures is an early-stage venture capital firm that partners with exceptional founders who are building iconic companies. We invest at the Seed and Series A stages and leverage our Voyager software platform to enable our Success team and Connected Network to help founders scale to the growth stage. Select portfolio companies that have reachedthe growth stage include Iterable, Goldbelly, Resident, Eden Health, FiscalNote, and Squire.We invest in four main areas: SaaS for the Second Wave, Citizen Professionals, The Engineering Value Chain Revolution, and Personalized Consumer Applications. You can read more here: https://645ventures.com/themes/645 Ventures has $200m+ in AUM and is growing fast with backing from leading institutional investors, including university endowments, funds of funds, and pension funds. We have over 35 active companies in our portfolio in the areas of enterprise SaaS, infrastructure software, and consumer technology. Several of our portfolio companies have been acquired by Google, Facebook, Expedia, and private equity firms.
645 Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
|
Alessio Fanelli
Principal, Investment & Research
|
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Blake Jennelle
CTO In Residence
|
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Guerin Schwarberg
Vice President
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Justin Fargione
Senior Full Stack Engineer
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Matt Hawes
Associate
|
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FAQ
What does Alessio Fanelli invest in?
Alessio Fanelli invests primarily in Software, Information Technology and Internet startups, most often at Seed and Series A stage. Most of the 9 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
When did Alessio Fanelli last invest?
The most recent investment recorded for Alessio Fanelli closed in Jun 2025. Shizune tracks 9 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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