Dafina Toncheva

Early Stage Investor

📍 Menlo Park, California, United States🔄 Updated September 2026💼 12 investments📅 18 years investing🗓 Last invested Aug 2020
VC🌍 United States
12
Total investments
4
Early stage
4
Mid stage
2
Late stage
18y
Years active

Portfolio

10 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Board Member and Lead Investor
Aug 2020
Carrot Fertility is the leading global fertility care platform, serving people of every age, race, income, sex, sexual orientation, gender, marital status, and geography. Get a quick demo and briefing about how modern companies use Carrot to drive down healthcare costs, attract and retain top talent, and build cultures of inclusion. Were standing by to help you achieve your HR and People team goals. lets@get-carrot.com Want to join our team? Were hiring. Check out our careers page here: https://www.get-carrot.com/company/careers
Board Member and Lead Investor
Apr 2019
Percepto is the leading autonomous inspection and monitoring solution provider, revolutionizing how enterprises monitor and inspect their critical infrastructure and assets. Our solution, combining Percepto AIM software and Percepto Air drones with regulatory approvals and turnkey service support, empowers organizations to optimize performance, safety, and sustainability. Percepto offers autonomous data collection with our market-leading drone-in-a-box solution, powered by Percepto AIM software. AIM transforms complex data into actionable insights through automated data management and AI-driven analysis, optimizing operational efficiency on an unprecedented scale. With remote operations from day one, we enable seamless, large-scale deployment at Fortune 500 organizations globally. Percepto is trusted by heavy industry enterprises including Siemens Energy, Delek US, Koch Fertilizer and ICL Dead Sea Works.
Board Member and Lead Investor
May 2018
Raken is a cloud-based, mobile, daily reporting and field management platform for contractors. We enable superintendents, foreman and project managers to streamline field workflows by creating accurate daily reports, time cards, and more in less time. We work with commercial, residential, and specialty contractors of all shapes and sizes. Rakens digital toolbox allows you to manage/document accidents & delays, subcontractor information, site safety & quality control observations, project photos, weather, task lists, equipment rental, jobsite visitors, time cards, and more!
Board Member and Lead Investor
Mar 2018
The mission of Arkose Labs is to create an online environment where all consumers are protected from online spam and abuse. Recognized by G2 as the 2023 Leader in Bot Detection and Mitigation, with the highest score in customer satisfaction and largest market presence four quarters running, Arkose Labs offers the worlds first $1M warranties for credential stuffing and SMS toll fraud. With 20% of our customers being Fortune 500 companies, our AI-powered platform combines powerful risk assessments with dynamic threat response to undermine the strategy of attack, all while improving good user throughput. Headquartered in San Mateo, CA, with offices in London, Costa Rica, and Brisbane, Australia, Arkose Labs protects enterprises from cybercrime and abuse.
Board Member and Lead Investor
Nov 2017
Lumas Patient Success Platform™ unifies and automates each of a patients healthcare journeys -- access & operational, clinical, and financial -- to help them be healthier. It integrates with more than 80 EHRs to give staff and clinicians a fuller view of the patient with less manual outreach. With Luma, healthcare organizations see an average of 37% more referred patients in the first six months, and achieve a 39% average revenue increase.
Board Member and Lead Investor
Dec 2012
InsideSales offers the leading Enterprise Sales Engagement Platform that accelerates revenue. With Playbooks™ from InsideSales, sales professionals increase productivity, optimize customer interactions, and connect to the right buyers. Playbooks manages lead follow-up and prospecting cadences, automates administrative tasks, and uses data to predict who, when, and how to engage buyers for the best outcome—all to set your sales reps up for success. Using Playbooks, thousands of sales teams have been able to accelerate revenue using buyer behavior data and AI—including Groupon, Dell, Sage, Ping Identity, Caesars Entertainment, Pluralsight, Motorola, Fidelity, American Express, and Athena Health.
Board Observer and Lead Investor
Aug 2012
Kenna is now Cisco Vulnerability Management. Learn more: https://www.cisco.com/site/us/en/products/security/vulnerability-management/index.html
Board member and Lead Investor
Mar 2010
MATRIXX Software delivers a modern converged charging and commerce solution proven at scale. Its cloud native Digital Commerce Platform provides network-grade, mission critical software that unlocks new network monetization opportunities. With its no-code configuration capabilities, MATRIXX empowers service providers with the agility necessary to easily develop, deploy and monetize new products and services. MATRIXX is the platform of choice powering many of the world’s leading communications companies, IoT players and emerging network infrastructure providers. MATRIXX makes it possible to harness commercial innovation and on-demand customer experience to better compete and drive new revenue and growth opportunities across markets and verticals.
Lead Investor
Oct 2009
Cloudflare, Inc. (NYSE: NET) is the leading connectivity cloud company. It empowers organizations to make their employees, applications and networks faster and more secure everywhere, while reducing complexity and cost. Cloudflare’s connectivity cloud delivers the most full-featured, unified platform of cloud-native products and developer tools, so any organization can gain the control they need to work, develop, and accelerate their business. Powered by one of the world’s largest and most interconnected networks, Cloudflare blocks billions of threats online for its customers every day. It is trusted by millions of organizations – from the largest brands to entrepreneurs and small businesses to nonprofits, humanitarian groups, and governments across the globe.
Board Observer
Oct 2008
In today’s on-demand world, the needs of the market can turn on a dime. Aria gives enterprise companies speed and agility to change with it. Aria’s cloud-based monetization platform removes billing bottlenecks to allow companies to quickly launch and evolve their offerings. Only Aria provides speed and agility at scale, delivers actionable customer insights, and empowers business users with direct control to better monetize their offerings. Innovative companies like Adobe, Audi, Experian, and Philips depend on Aria to accelerate their time to revenue, maximize customer value, and grow their business. Aria is award-winning and top ranked by leading research firms. Headquartered in downtown San Francisco, CA, Aria has field offices throughout the world. To learn more, visit ariasystems.com.
Experience · 14 entries
All (14)
Investments (12)
Board (10)
2020
Board Member and Lead Investor
Aug 2020
Carrot Fertility is the leading global fertility care platform, serving people of every age, race, income, sex, sexual orientation, gender, marital status, and geography. Get a quick demo and briefing about how modern companies use Carrot to drive down healthcare costs, attract and retain top talent, and build cultures of inclusion. Were standing by to help you achieve your HR and People team goals. lets@get-carrot.com Want to join our team? Were hiring. Check out our careers page here: https://www.get-carrot.com/company/careers
2019
Board Member and Lead Investor
Apr 2019
Percepto is the leading autonomous inspection and monitoring solution provider, revolutionizing how enterprises monitor and inspect their critical infrastructure and assets. Our solution, combining Percepto AIM software and Percepto Air drones with regulatory approvals and turnkey service support, empowers organizations to optimize performance, safety, and sustainability. Percepto offers autonomous data collection with our market-leading drone-in-a-box solution, powered by Percepto AIM software. AIM transforms complex data into actionable insights through automated data management and AI-driven analysis, optimizing operational efficiency on an unprecedented scale. With remote operations from day one, we enable seamless, large-scale deployment at Fortune 500 organizations globally. Percepto is trusted by heavy industry enterprises including Siemens Energy, Delek US, Koch Fertilizer and ICL Dead Sea Works.
2018
Board Member and Lead Investor
May 2018
Raken is a cloud-based, mobile, daily reporting and field management platform for contractors. We enable superintendents, foreman and project managers to streamline field workflows by creating accurate daily reports, time cards, and more in less time. We work with commercial, residential, and specialty contractors of all shapes and sizes. Rakens digital toolbox allows you to manage/document accidents & delays, subcontractor information, site safety & quality control observations, project photos, weather, task lists, equipment rental, jobsite visitors, time cards, and more!
Board Member and Lead Investor
Mar 2018
The mission of Arkose Labs is to create an online environment where all consumers are protected from online spam and abuse. Recognized by G2 as the 2023 Leader in Bot Detection and Mitigation, with the highest score in customer satisfaction and largest market presence four quarters running, Arkose Labs offers the worlds first $1M warranties for credential stuffing and SMS toll fraud. With 20% of our customers being Fortune 500 companies, our AI-powered platform combines powerful risk assessments with dynamic threat response to undermine the strategy of attack, all while improving good user throughput. Headquartered in San Mateo, CA, with offices in London, Costa Rica, and Brisbane, Australia, Arkose Labs protects enterprises from cybercrime and abuse.
2017
Board Member and Lead Investor
Nov 2017
Lumas Patient Success Platform™ unifies and automates each of a patients healthcare journeys -- access & operational, clinical, and financial -- to help them be healthier. It integrates with more than 80 EHRs to give staff and clinicians a fuller view of the patient with less manual outreach. With Luma, healthcare organizations see an average of 37% more referred patients in the first six months, and achieve a 39% average revenue increase.
Show all 14 entries ↓
Investment activity
2008–2020 · 12 investments
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