Upsun (formerly Platform.sh)
Upsun (formerly Platform.sh) provides a cloud platform for developers to build, deploy, and scale applications without managing backend infrastructure. The company has raised $175M, most recently in a Series D round in June 2022, and employs 274 people.
The growth story
Upsun (formerly Platform.sh) grew from 357 to 274 employees between 2022 and 2026, raising $175M along the way, most recently a Series D in June 2022.
About
Upsun offers a cloud application platform designed for hybrid teams where AI agents assist in coding and testing while developers focus on problem-solving. The platform provides predictable performance, secure environments, real-time observability, and AI-ready features, targeting developers, DevOps engineers, and platform teams.
The company has raised $175M, including a Series D round in June 2022, backed by investors like Benhamou Global Ventures and Morgan Stanley Expansion Capital. With 274 employees, Upsun has built a significant presence in the software development industry.
Founders and leadership
Engineering is the largest function at Upsun, with 87 employees. The company is led by a team with a strong focus on cloud infrastructure and AI integration, reflecting its hybrid team approach.
The Upsun (formerly Platform.sh) org chart
Fred PLAIS (Co-founder & CEO) leads 60 mapped leaders with 15 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 69 (-8% YoY), Information Technology 56 (+2% YoY), Business Development 21 (+11% YoY), Sales 19 (-21% YoY), Operations 14 (-7% YoY), Marketing 14 (0% YoY).
Talent flow
Upsun's talent pool includes professionals from companies like Blackfire.io, Rackspace Technology, and Accenture. Alumni have moved to roles at Pantheon, Neo4j, and GitLab, indicating a strong network in the tech and cloud infrastructure sectors.
Most common previous employers of Upsun (formerly Platform.sh) staff: Blackfire.io (5), Rackspace Technology (5), Commerce Guys (4), af83 (4), Accenture (4), IBM (4). Former Upsun (formerly Platform.sh) employees most often moved to Pantheon (4), Neo4j (2), GitLab (2), Storyblok (2), Bedrock Streaming (2), AIKON Partners (1).
Alumni worth knowing
The Upsun (formerly Platform.sh) mafia
Upsun alumni have founded 13 companies, including Usersnap, Cloudacio, and Pantomeno, showcasing a trend of entrepreneurial activity among former employees.
13Shannon V., was Director of CS & Support until 2016JP Olivera, was Customer Success Manager until 2021Stéphane Distinguin, was Member board of directors until 2014Quentin SINIG, was GTM | Solutions Architect until 2023Robert Douglass, was VP Channel Development until 2022Shedrack A., was Developer Relations Engineer until 2022
Ndidiamaka Agu, was Creative + Campaign Project Manager until 2023
Paul Beglin, was Competitive Intelligence Analyst until 2023
Cristina Foyo Cárdenas, was Inside Sales Representative until 2024
Rudy Dodier, was Director of Strategic Alliance Sales (Retail & CPG) until 2023
David Nkoto Belinga, was Inside Sales Specialist until 2023
Aaron Porter, was Global VP, Agency Partnerships until 2021
Marc Weistroff, was VP Product Strategy until 2025Web traffic
Traffic mix: 41% direct, 43% search, 4% social, 1% paid.
What this company is made of
Most common skills at Upsun (formerly Platform.sh): Linux (91), Python (Programming Language) (75), MySQL (74), Project Management (73), JavaScript (72), Git (69), PHP (65), Management (64).
Where the team actually sits
Upsun (formerly Platform.sh) people are concentrated in Île-de-France, France (16), England, United Kingdom (13), France (13), California, United States (7). 3 offices on record.
Search footprint
Upsun (formerly Platform.sh) attracts about 6,327 organic search visits a month, traffic worth roughly $23K a month if bought through ads. It gained 786 ranking keywords and lost 479 in the last period.
What employees say
- Compensation
- 3.30 / 5
- Career opportunities
- 3.00 / 5
- Senior management
- 2.80 / 5
- Work-life balance
- 3.80 / 5
Frequently asked
Upsun (formerly Platform.sh) has 274 employees as of September 2026.
Upsun (formerly Platform.sh) has raised $175M in total, most recently a Series D round in June 2022.
Upsun (formerly Platform.sh) was founded in 2015 by Fred PLAIS.
Fred PLAIS (Co-founder & CEO) sits at the top of Upsun (formerly Platform.sh)'s reporting structure, with 15 direct reports.
The most common previous employers of current Upsun (formerly Platform.sh) staff are Blackfire.io (5 people), Rackspace Technology (5 people), Commerce Guys (4 people).
Former Upsun (formerly Platform.sh) employees most often move to Pantheon (4), Neo4j (2), GitLab (2).
At least 13 companies have a founder who previously worked at Upsun (formerly Platform.sh), including Usersnap, Cloudacio, Pantomeno.
Upsun (formerly Platform.sh) attracts about 6,327 organic search visits a month, worth roughly $23K a month in equivalent ad spend.
The most common skills among Upsun (formerly Platform.sh) staff are Linux, Python (Programming Language), MySQL, Project Management, JavaScript.
Upsun (formerly Platform.sh) staff are concentrated in Île-de-France, France (16), England, United Kingdom (13), France (13).
Upsun (formerly Platform.sh) has about 69 people in Engineering, down 8% over the past year, as of September 2026.
Upsun (formerly Platform.sh) has about 56 people in Information Technology, up 2% over the past year, as of September 2026.
Computed from 242 current and 231 former Upsun (formerly Platform.sh) profiles, as of September 2026. Source: Crustdata.
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