LightSource
LightSource sells AI-powered procurement software that automates sourcing from RFQ to award for enterprise buyers and suppliers. The San Francisco-based company has raised $33M and employs 62 people.
The growth story
LightSource grew from 3 to 62 employees between 2021 and 2026, raising $33M along the way, most recently a Series A in March 2025.
About
LightSource provides a procurement platform that uses AI to automate sourcing processes for enterprise companies and their suppliers. The software aims to reduce costs and improve efficiency by streamlining RFQ workflows and supplier collaboration.
The company has raised $33M in Series A funding from investors including Bain Capital Ventures and Lightspeed Venture Partners. With 62 employees, LightSource has built a team primarily focused on engineering, which accounts for nearly a third of its workforce.
Founders and leadership
Engineering is LightSource's largest function with 19 employees, representing 31% of its 62-person workforce. The company's leadership team includes founders with backgrounds in enterprise software and AI.
The LightSource org chart
Spencer Penn (Founder and CEO) leads 21 mapped leaders with 7 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 22 (+10% YoY), Sales 7 (0% YoY), Business Development 7 (-12% YoY), Customer Success and Support 5 (+67% YoY), Operations 5 (+25% YoY), Arts and Design 4 (+300% YoY).
Talent flow
LightSource recruits heavily from consulting and tech firms, with McKinsey (10), Microsoft (7), and Amazon (5) being its top talent sources. Alumni have gone on to roles at companies like SpaceXAI and Tennr.
Most common previous employers of LightSource staff: McKinsey & Company (10), Microsoft (7), Amazon (5), Google (5), Coupa (4), Meta (3). Former LightSource employees most often moved to Bad Studios (1), FusionAuth (1), SpaceXAI (1), Brain (1), Tennr (1), Pet Printed (1).
Alumni worth knowing
Web traffic
Traffic mix: 58% direct, 20% search, 6% social, 0% paid.
What this company is made of
Most common skills at LightSource: Microsoft Excel (20), Python (Programming Language) (20), Leadership (18), Microsoft Office (18), JavaScript (14), Management (13), Microsoft PowerPoint (12), Customer Service (12).
Where the team actually sits
LightSource people are concentrated in California, United States (16), San Francisco Bay Area (9), Colorado, United States (6), Washington, United States (6). 3 offices on record.
Search footprint
LightSource attracts about 3,152 organic search visits a month, traffic worth roughly $26K a month if bought through ads. It gained 296 ranking keywords and lost 269 in the last period.
What employees say
- Compensation
- 4.00 / 5
- Career opportunities
- 4.50 / 5
- Senior management
- 4.50 / 5
- Work-life balance
- 4.00 / 5
Frequently asked
LightSource has 62 employees as of September 2026.
LightSource has raised $33M in total, most recently a Series A round in March 2025.
LightSource was founded in 2020 by Spencer Penn, Idan Mintz.
Spencer Penn (Founder and CEO) sits at the top of LightSource's reporting structure, with 7 direct reports.
The most common previous employers of current LightSource staff are McKinsey & Company (10 people), Microsoft (7 people), Amazon (5 people).
Former LightSource employees most often move to Bad Studios (1), FusionAuth (1), SpaceXAI (1).
LightSource attracts about 3,152 organic search visits a month, worth roughly $26K a month in equivalent ad spend.
The most common skills among LightSource staff are Microsoft Excel, Python (Programming Language), Leadership, Microsoft Office, JavaScript.
LightSource staff are concentrated in California, United States (16), San Francisco Bay Area (9), Colorado, United States (6).
LightSource has about 22 people in Engineering, up 10% over the past year, as of September 2026.
LightSource has about 7 people in Sales, up 0% over the past year, as of September 2026.
Computed from 51 current and 23 former LightSource profiles, as of September 2026. Source: Crustdata.
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