# JJ Fliegelman

> JJ Fliegelman is a seed investor at Y Combinator backing Artificial Intelligence and Software. See 27 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Y Combinator](https://shizune.co/investors/profile/y-combinator)
- Location: New York, United States
- Total investments: 27
- Last investment: Apr 2026
- Lead investor: 7%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/jjfliegelman
- X (Twitter): https://twitter.com/JdotJdotF

JJ Fliegelman is a seed investor at Y Combinator in New York focused on Artificial Intelligence and Software. JJ Fliegelman is currently working at WayUp as Co-Founder and CTO and as a Visiting Group Partner at Y Combinator.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $2.2M–$8.6M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Artificial Intelligence | 16 | 59% |
| Software | 14 | 52% |
| SaaS | 8 | 30% |
| Information Technology | 7 | 26% |
| B2B | 3 | 11% |

44 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 26 | 96% |
| Pre-Seed | 1 | 4% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 22 | 81% |
| Canada | 2 | 7% |
| Sweden | 1 | 4% |
| The Netherlands | 1 | 4% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Haladir | Haladir is the decisional AI layer for logistics. We sit on top of your WMS, TMS, OMS, etc., unify their data into one operational graph, and embed solver-grade optimization, ML models, and process intelligence into the decisions that power supply chains. Today's AI brought intelligence. The next frontier is judgement. | $4.3M | Seed | Apr 29, 2026 |  |
| Simple AI | Simple AI is a software development firm that made an AI Assistant. | $14M | Seed | Feb 10, 2026 |  |
| Brickanta | Brickanta uses AI to automate construction documents and project workflows, reduce errors, streamline tasks, & deliver actionable insights. | $8M | Seed | Jan 27, 2026 |  |
| Guide Labs | Guide Labs is a software development company that builds interpretable models to explain reasoning that are easy to steer, debug, and align. | $9.3M | Seed | Dec 04, 2025 |  |
| Central | Central simplifies payroll, hiring, benefits, and compliance for startups, automating back-office tasks to save time and reduce risks. | $8.6M | Seed | Aug 27, 2025 |  |
| SRE.ai | SRE.ai delivers AI agents that automate Salesforce DevOps workflows, allowing for fast, transparent deployments, back-promotions, and impact analysis. With seamless tool integration, SRE.ai minimizes clicks and maximizes productivity, enabling teams to scale without sacrificing quality or speed. | $7.2M | Seed | Aug 20, 2025 |  |
| Willow Voice | Willow Voice is a technology company that develops voice input solutions using artificial intelligence. Its primary product is a dictation tool that converts spoken language into text in real time. The platform is designed to support everyday digital tasks by reducing reliance on manual typing. | $4.2M | Seed | Jul 15, 2025 |  |
| Cekura AI | Cekura AI is an AI based Software Development firm offering Developer Tool to observe and test AI voice agents. | $2.4M | Seed | Jul 01, 2025 |  |
| Blacksmith | Blacksmith is a company that helps businesses to conduct their continuous integration (CI) up to twice as quickly and at half the expense. Blacksmith accomplish this by running CI on powerful gaming CPUs. | $3.5M | Seed | May 01, 2025 |  |
| Momentic | Momentic enables developers to deploy AI agents to test web apps end-to-end. Just describe user flows using natural language. | $3.7M | Seed | Mar 03, 2025 |  |

10 of 27 investments shown.

## Co-investors
- [Y Combinator](https://shizune.co/investors/profile/y-combinator) — VC Fund, 25 deals together
- [Pioneer Fund](https://shizune.co/investors/profile/pioneer-fund) — VC Fund, 6 deals together
- [BoxGroup](https://shizune.co/investors/profile/boxgroup) — VC Fund, 4 deals together
- [First Round Capital](https://shizune.co/investors/profile/first-round-capital) — VC Fund, 4 deals together
- [SV Angel](https://shizune.co/investors/profile/sv-angel) — VC Fund, 4 deals together
- [Transpose Platform Management](https://shizune.co/investors/profile/ti-platform-management) — VC Fund, 4 deals together

## About Y Combinator

VC Fund · Mountain View, United States

Y Combinator is a startup accelerator that provides funding and mentorship to early-stage companies. It offers a program where startups receive guidance from experienced entrepreneurs and investors. The organization helps founders in their business models and develop their products. Y Combinator serves industries such as technology, healthcare, andfinance.

5 contacts available at Y Combinator.

| Name | Title | Profile |
| --- | --- | --- |
| Boris Jabes | Visiting Partner | https://shizune.co/investors/profile/boris-jabes |
| Luther Lowe | Head of Public Policy | https://shizune.co/investors/profile/luther-lowe |
| Max Kolysh | Visiting Partner | https://shizune.co/investors/profile/max-kolysh |
| Brad Flora | Group Partner | https://shizune.co/investors/profile/brad-flora |
| Calvin French-Owen | Visiting Group Partner | https://shizune.co/investors/profile/calvin-french-owen |

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## FAQ

### What does JJ Fliegelman invest in?

JJ Fliegelman invests primarily in Artificial Intelligence, Software and SaaS startups, most often at Seed and Pre-Seed stage. Most of the 27 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is JJ Fliegelman's check size?

JJ Fliegelman typically joins rounds of $2.2M–$8.6M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds JJ Fliegelman participates in.

### When did JJ Fliegelman last invest?

The most recent investment recorded for JJ Fliegelman closed in Apr 2026. Shizune tracks 27 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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