Berlin-based startup Restate has secured a $20 million Series A funding round led by Singular. The round also included participation from Redpoint Ventures and Capital One Ventures. Stephan Ewen co-founded Restate in 2022 to provide durable workflow infrastructure. The company built an execution engine that keeps multistep workflows resilient against crashes and network interruptions.
Ewen stated that the platform was never originally built for AI agents. However, it turned out to be a match for the unpredictable paths and long runtimes that agents surface. Ensuring durability is critical for these workflows, as users need reproducible actions and consistent outcomes. This AI boom created a strong tailwind for the startup, leading to multiple six- and seven-figure customer contracts over the last few months.
Restate competes with market heavyweight Temporal
The fresh capital will help Restate compete with Temporal. Temporal is a major player in the durable infrastructure space that recently announced a $550 million Series E at a $12.55 billion valuation. Despite being a smaller provider, Restate already serves high-profile customers, including the vibe-coding platform Replit. Ewen noted that the startup also serves Fortune 500 customers, including clients in the financial sector.
Restate developed its own storage, replication, and redundancy layers instead of building on top of an external database. According to Ewen, this architecture allows the system to remain exceptionally fast and lightweight. While many companies typically use durability engines for heavyweight workflows, Restate aims to offer a more efficient and cost-effective alternative for lighter processes.
Founders built open source stream-processing
Before launching Restate, Ewen co-created the open source stream-processing framework Apache Flink. He later served as CTO of Data Artisans, a company Alibaba acquired in 2019 and rebranded as Ververica. Ewen co-founded Restate with former colleagues Igal Shilman and Till Rohrmann. Former Stripe and Meta engineer Ahmed Farghal joined as the fourth co-founder during the Series A round.
The startup intends to use its new funding to hire a go-to-market team and bring on more engineers. Restate will also expand its office in the San Francisco Bay Area to sit closer to current and potential customers. Ewen believes that durability tools will soon become essential for businesses of all shapes and sizes.
