Harjeet Taggar
Partner @ Start Fund
San Francisco, United States
Harjeet Taggar is a pre-seed investor at Start Fund 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:
- 154
- Last investment:
- Lead investor:
- 73%
Last updated:
For AI agents: llms.txt
Industries Harjeet Taggar invests in
Stages Harjeet Taggar invests in
Countries Harjeet Taggar invests in
Investment Focus
Industry
- Artificial Intelligence 71 (46%)
- Software 47 (31%)
- SaaS 24 (16%)
- B2B 21 (14%)
- Developer Tools 15 (10%)
Stage
- Pre-Seed 98 (64%)
- Seed 25 (16%)
- Series A 6 (4%)
- Series B 2 (1%)
Country
- United States 100 (65%)
- India 5 (3%)
- Israel 2 (1%)
- United Kingdom 2 (1%)
- Chile 1 (1%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Agave
|
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
|
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
|
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
|
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
|
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
|
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
|
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 | |
Archer
|
Archer offers digital financial services, enabling secure payments, transfers, and account management services. | $500K / Pre-Seed / Jun 16, 2026 | |
Smartbase
|
Smartbase is an ERP solution provider that uses artificial intelligence to automate entry of purchase orders for manufacturers. | $500K / Pre-Seed / Jun 16, 2026 | |
Limrun
|
Limrun provides remote Xcode, iOS simulators, and Android emulators that enable cloud-based AI agents to build and test mobile apps. | $500K / Pre-Seed / Jun 16, 2026 | |
| See all 154 investments → | |||
Co-Investors
About Start Fund
Start Fund, created in January 2011, is a joint venture between Yuri Milner and SV Angel. The fund was created to invest in Y Combinator startups and made its first set of investments in January 2011.
Start Fund Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Felix Shpilman
Founder & Partner
|
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Harjeet Taggar
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 154 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 Harjeet Taggar last invest?
The most recent investment recorded for Harjeet Taggar closed in Jul 2026. Shizune tracks 154 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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