Flagsmith
Flagsmith is an open-source feature flag and remote configuration service. Manage features across web, mobile, and server-side apps with a simple API. Toggle features without deployments, test in production safely, and run A/B tests.
- Location
- London, UK
- Raised
- $4M
- Stage
- Series A
- Founded
- 2018
- Category
- Open Source
- Funding
- VC-backed
- Team
- 10-50
Funding figures as of Jul 2025 · not independently verified
Founders of Flagsmith
- Ben Rometsch
Investors backing Flagsmith
- Octopus Ventures
Frequently asked questions
What does Flagsmith do?
Flagsmith is an open-source feature flag and remote configuration service. Manage features across web, mobile, and server-side apps with a simple API. Toggle features without deployments, test in production safely, and run A/B tests.
Where is Flagsmith based?
Flagsmith is based in London, UK.
When was Flagsmith founded?
Flagsmith was founded in 2018.
How much has Flagsmith raised?
Flagsmith has raised $4M in their Series A round as of Jul 2025.
Who founded Flagsmith?
Flagsmith was founded by Ben Rometsch.
Who has invested in Flagsmith?
Flagsmith is backed by Octopus Ventures.
How Flagsmith would pitch themselves
○ Auto-generated01Target customer
Any platform — the core audience Flagsmith's product is built around.
02Problem they solve
Flagsmith is an open-source feature flag and remote configuration service. Manage features across web, mobile, and server-side apps with a simple API. Toggle features without deployments, test in production safely, and… The category has historically been served by tools that miss the modern workflow this product is built around.
03Key differentiator
Flagsmith differentiates on feature flags and remote config for any platform. Backed by Octopus Ventures, $4M raised — the company has resources + validation to compound this thesis. Founded by Ben Rometsch.
04Go-to-market strategy
Series-A scaling stage — building outbound sales motion, hiring first AEs, layering on customer success. Mix of PLG (where the product allows) + direct sales for higher-ACV deals.