ZAP Surgical Systems, Inc.
ZAP Surgical Systems makes radiosurgery equipment for cancer treatment, using gyroscopic motion and self-shielding technology. The company has raised $159M, most recently in a Series E round in November 2024.
The growth story
ZAP Surgical Systems, Inc. grew from 100 to 127 employees between 2021 and 2026, raising $159M along the way, most recently a Series E in November 2024.
About
ZAP Surgical Systems develops the ZAP-X, a radiosurgery system designed to treat tumors with high precision. Its technology combines gyroscopic motion for precise targeting with self-shielding to reduce radiation exposure, enabling safer treatment in more locations. The system is aimed at hospitals and cancer treatment centers seeking advanced radiation therapy options.
The company has raised $159M, including a Series E round in late 2024, backed by investors like Baheal Pharmaceutical Group and Foxconn Technology Group. With 127 employees, ZAP Surgical Systems has built a team primarily focused on engineering, drawing talent from major medical device companies like Accuray and Varian.
Founders and leadership
Engineering is the largest function at ZAP Surgical Systems, with 32 employees. The company’s leadership includes founders and executives with backgrounds in medical device development and radiation therapy technology.
The ZAP Surgical Systems, Inc. org chart
John Adler (CEO) leads 45 mapped leaders with 2 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 35 (0% YoY), Information Technology 18 (+20% YoY), Operations 13 (+8% YoY), Business Development 13 (+8% YoY), Healthcare Services 8 (0% YoY), Research 6 (0% YoY).
Talent flow
ZAP Surgical Systems recruits heavily from medical device companies, with Accuray and Varian being the top sources of talent. Alumni often move to other medical technology firms like Intuitive and PROCEPT BioRobotics, as well as tech giants like Apple and Google.
Most common previous employers of ZAP Surgical Systems, Inc. staff: Accuray (15), Varian (9), Siemens Healthineers (7), ViewRay (6), Elekta (6), Venus Hair (5). Former ZAP Surgical Systems, Inc. employees most often moved to Intuitive (4), Apple (3), PROCEPT BioRobotics (3), Google (3), Varian (2), Siemens Healthineers (2).
Alumni worth knowing
The ZAP Surgical Systems, Inc. mafia
Four alumni have founded companies, including FemtoMetrix, a medical device firm with 32 employees, and Amplifai Oncology, a startup focused on cancer treatment technology.
4Corey Zankowski, was Board Observer until 2022Riju Pahwa, was VP of Software Engineering until 2021Gabriel Morris, was Interim Chief Financial Officer until 2020Hiring now
Web traffic
Traffic mix: 47% direct, 31% search, 11% social, 4% paid.
What this company is made of
Most common skills at ZAP Surgical Systems, Inc.: Medical Devices (63), Project Management (36), Medical Imaging (34), Leadership (32), Cross-functional Team Leadership (29), Microsoft Office (29), MATLAB (26), Product Development (25).
Where the team actually sits
ZAP Surgical Systems, Inc. people are concentrated in California, United States (33), San Francisco Bay Area (17), New Jersey, United States (2), England, United Kingdom (2).
Search footprint
ZAP Surgical Systems, Inc. attracts about 417 organic search visits a month, traffic worth roughly $2K a month if bought through ads. It gained 30 ranking keywords and lost 22 in the last period.
Frequently asked
ZAP Surgical Systems, Inc. has 127 employees as of September 2026.
ZAP Surgical Systems, Inc. has raised $159M in total, most recently a Series E round in November 2024.
John Adler (CEO) sits at the top of ZAP Surgical Systems, Inc.'s reporting structure, with 2 direct reports.
The most common previous employers of current ZAP Surgical Systems, Inc. staff are Accuray (15 people), Varian (9 people), Siemens Healthineers (7 people).
Former ZAP Surgical Systems, Inc. employees most often move to Intuitive (4), Apple (3), PROCEPT BioRobotics (3).
At least 4 companies have a founder who previously worked at ZAP Surgical Systems, Inc., including FemtoMetrix, Amplifai Oncology, Ploutos AI.
ZAP Surgical Systems, Inc. attracts about 417 organic search visits a month, worth roughly $2K a month in equivalent ad spend.
The most common skills among ZAP Surgical Systems, Inc. staff are Medical Devices, Project Management, Medical Imaging, Leadership, Cross-functional Team Leadership.
ZAP Surgical Systems, Inc. staff are concentrated in California, United States (33), San Francisco Bay Area (17), New Jersey, United States (2).
ZAP Surgical Systems, Inc. has about 35 people in Engineering, up 0% over the past year, as of September 2026.
ZAP Surgical Systems, Inc. has about 18 people in Information Technology, up 20% over the past year, as of September 2026.
Computed from 89 current and 126 former ZAP Surgical Systems, Inc. profiles, as of September 2026. Source: Crustdata.
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