Plain
Plain is a London-based AI support platform startup that raised $21M in a February 2025 Series A. The 56-person company sells API-powered customer service tools.
The growth story
Plain grew from 16 to 56 employees between 2023 and 2026, raising $21M along the way, most recently a Series A in February 2025.
About
Plain provides AI-powered customer support software built around a developer-friendly API. The product targets companies needing scalable solutions for handling customer inquiries.
The Series A funding suggests rapid early growth, though headcount trends are unclear. Investors include Battery Ventures and several individual backers from the tech industry.
Founders and leadership
Engineering dominates Plain's organization with 16 staff, nearly 30% of total headcount. The company has a young workforce with median tenure of just one year.
The Plain org chart
Simon Rohrbach (Co-Founder & CEO) leads 14 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 17 (+70% YoY), Sales 6 (+500% YoY), Business Development 5 (0% YoY), Information Technology 5 (+400% YoY), Entrepreneurship 4 (0% YoY), Marketing 4 (+33% YoY).
Talent flow
Plain recruits heavily from Deliveroo, Microsoft and Lyst, drawing 3 hires each. Alumni scatter to various startups including Attio and Citadel, with no clear pattern.
Most common previous employers of Plain staff: Deliveroo (3), Microsoft (3), Lyst (3), Udemy (2), Improbable (2), LloydsDirect part of Pharmacy2U (2). Former Plain employees most often moved to Junction (1), Ashby (1), Attio (1), Beam (1), Fanatics (1), Citadel (1).
Alumni worth knowing
Web traffic
Traffic mix: 72% direct, 10% search, 5% social, 1% paid.
What this company is made of
Most common skills at Plain: JavaScript (21), Cascading Style Sheets (CSS) (15), HTML (15), Leadership (15), Python (Programming Language) (14), Amazon Web Services (AWS) (14), SQL (12), React.js (11).
Where the team actually sits
Plain people are concentrated in California, United States (9), England, United Kingdom (8), San Francisco Bay Area (6), United Kingdom (2).
Search footprint
Plain attracts about 1,161 organic search visits a month, traffic worth roughly $3K a month if bought through ads. It gained 82 ranking keywords and lost 61 in the last period.
Frequently asked
Plain has 56 employees as of September 2026.
Plain has raised $21M in total, most recently a Series A round in February 2025.
Plain was founded in 2020 by Simon Rohrbach, Matt Vagni, Franklin Wise.
Simon Rohrbach (Co-Founder & CEO) sits at the top of Plain's reporting structure, with 7 direct reports.
The most common previous employers of current Plain staff are Deliveroo (3 people), Microsoft (3 people), Lyst (3 people).
Former Plain employees most often move to Junction (1), Ashby (1), Attio (1).
Plain attracts about 1,161 organic search visits a month, worth roughly $3K a month in equivalent ad spend.
The most common skills among Plain staff are JavaScript, Cascading Style Sheets (CSS), HTML, Leadership, Python (Programming Language).
Plain staff are concentrated in California, United States (9), England, United Kingdom (8), San Francisco Bay Area (6).
Plain has about 17 people in Engineering, up 70% over the past year, as of September 2026.
Plain has about 6 people in Sales, up 500% over the past year, as of September 2026.
Computed from 41 current and 20 former Plain profiles, as of September 2026. Source: Crustdata.
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