Harjeet Taggar
Partner @ Y Combinator
San Francisco, United States
Harjeet Taggar is a pre-seed investor at Y Combinator in San Francisco focused on Artificial Intelligence and Software. Harj Taggar is a Group Partner at Y Combinator. He was a Co-Founder and CEO at Triplebyte and a Co-founder and President at Auctomatic. He has a master's degree from the University of Oxford.
- Total investments:
- 157
- Last investment:
- Lead investor:
- 74%
Last updated:
For AI agents: llms.txt
Industries Harjeet Taggar invests in
Stages Harjeet Taggar invests in
Countries Harjeet Taggar invests in
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Investment Focus
Industry
- Artificial Intelligence 89 (57%)
- Software 57 (36%)
- SaaS 26 (17%)
- B2B 25 (16%)
- Developer Tools 16 (10%)
Stage
- Pre-Seed 117 (75%)
- Seed 26 (17%)
- Series A 8 (5%)
- Series B 2 (1%)
Country
- United States 118 (75%)
- India 4 (3%)
- Israel 2 (1%)
- United Kingdom 2 (1%)
- Chile 1 (1%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Applied Kinetics builds and deploys specialized AI employees to handle the coordination work behind America's energy and data center buildout. Our agents chase suppliers, track equipment approvals and delivery dates, and flag delays so project teams can keep critical equipment moving without hunting for updates across emails and spreadsheets. | $500K / Pre-Seed / Sep 17, 2026 | ||
| Induction Labs builds foundation AI models that learn from human-computer interactions to execute tasks autonomously. | $500K / Pre-Seed / Sep 10, 2026 | ||
| Rise Reforming develops technology to convert stranded biogas and post‑industrial plastic waste into useful chemicals. The company designs modular plants that fit inside shipping containers to process raw biogas from wastewater facilities, farms, and landfills on site. Its systems produce chemicals such as dimethyl ether and methanol for downstream industrial uses. Rise Reforming focuses on replacing fossil fuel–derived feedstocks with waste‑based inputs for chemical production. Its process is intended for biogas producers, waste management operators, and industrial partners seeking low‑carbon chemical sourcing and utilization of existing waste streams. | $500K / Pre-Seed / Sep 10, 2026 | ||
| Agave develops financial operations software for construction contractors that connects project management and enterprise resource planning (ERP) systems. Its platform automates accounting workflows, including invoice processing, expense management, and financial data synchronization, and uses AI to reduce manual data entry and improve accuracy.Agave also provides real-time financial visibility by integrating project, field, and accounting information across construction systems. The platform supports a range of construction accounting and ERP applications to help contractors manage financial operations more efficiently. | $15M / Series A / Jul 07, 2026 | ||
| Coval is a simulation and evaluation platform for AI agents, enabling engineers to deploy reliable assistants across chat and modalities. | $28M / Series A / Jun 24, 2026 | ||
| Aster is an AI autonomous research lab to automate open-ended research: research that defines its own problems before it can answer them. | $500K / Pre-Seed / Jun 16, 2026 | ||
| Allowance is a application that allows users to make purchases through AI integrated wallets for safe and secure shopping online. | $500K / Pre-Seed / Jun 16, 2026 | ||
| Maquoketa Research develops autonomous unmanned aerial systems, guidance software, and control solutions for defense applications. The company designs and manufactures NDAA-compliant one-way attack drones engineered to operate in contested, GNSS-denied, and electronically jammed environments. Its hardware is integrated with custom AI edge softwarefor computer vision target tracking and autonomous navigation on low-cost computing platforms. Maquoketa Research offers the Magpie UAS for semi-autonomous long-range strike missions and Odin ground control software for real-time telemetry, object detection overlays, and mission routing. The company also develops Synapse, a platform-agnostic terminal guidance module that runs on minimal hardware to increase mission completion rates. In addition, it supplies domestically assembled electronic speed controllers and flight controllers optimized for scaling airframe production. Maquoketa Research focuses on vertically integrated, domestic manufacturing to support military and government users with secure and scalable drone capabilities. | $500K / Pre-Seed / Jun 16, 2026 | ||
| Savant is a data tool that organizes scattered company data into structured, searchable operating context for people and AI. | $500K / Pre-Seed / Jun 16, 2026 | ||
| River Markets is a financial tool that allows traders and users to focus on alpha by handling their execution and trading infrastructure. | $500K / Pre-Seed / Jun 16, 2026 | ||
| See all 157 investments → | |||
Co-Investors
About Y Combinator
Y Combinator invests a standard amount of capital in exchange for equity and through uncapped safe agreements. Participants engage in a three-month intensive cycle that focuses on product development and preparations for fundraising. The firm offers access to a private networking platform for knowledge sharing and hosts events featuring speakers from various sectors. This program culminates in a presentation event where founders showcase their businesses to a curated group of investors.
Y Combinator Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Boris Jabes
Visiting Partner
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Luther Lowe
Head of Public Policy
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Max Kolysh
Visiting Partner
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Brad Flora
Group Partner
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Calvin French-Owen
Visiting Group Partner
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FAQ
What does Harjeet Taggar invest in?
Harjeet Taggar invests primarily in Artificial Intelligence, Software and SaaS startups, most often at Pre-Seed and Seed stage. Most of the 157 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Harjeet Taggar?
Public channels for Harjeet Taggar include LinkedIn and X (Twitter). 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 Harjeet Taggar last invest?
The most recent investment recorded for Harjeet Taggar closed in Sep 2026. Shizune tracks 157 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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