Restate, a Berlin start-up that makes infrastructure software for AI agents and backend applications, raised $20m in a Series A round led by Singular, it announced on 30 September 2026.
Redpoint Ventures, which led the company's seed round, and Capital One Ventures also took part. The round brought Restate's total funding to $27m, according to Tech.eu and Pulse 2.0. The company did not disclose a valuation.
“Durable execution solved an important problem: it made individual processes reliable. But software is increasingly made up of services, agents, workflows, and state that all need to stay reliable as they interact. We believe durability has to become a property of the infrastructure itself.”Stephan Ewen, CEO and co-founder, Restate
What Restate does
Restate works in a category known as durable execution. Its runtime records the progress of a program as it runs, so that if a server crashes or a call fails, the work can resume where it stopped instead of starting again. Developers write ordinary application code while the runtime handles retries and recovery.
In a blog post announcing the round, chief executive Stephan Ewen argued that existing durable execution systems were built mainly for workflows and are too slow, too costly and too complex to run for wider use. He wrote that managed durable execution is often priced at $25 to $50 per million durable actions, compared with about $1 per million writes for databases and queues.
Restate's design is built around a replicated log and ships as a single binary that forms clusters, which the company says makes self-hosting and running in a customer's own cloud easier. It also offers Virtual Objects, stateful entities such as chat sessions that keep durable state. Pulse 2.0 reported that the company recently introduced a Bring Your Own Cloud option for managed deployments.
The company said AI agents have made long-running asynchronous programs common, because a single agent can make hundreds of model calls, tool calls and retries and may wait for human approval.
Customers and use of funds
Restate says it is used by hundreds of companies, including Fortune 500 firms. Replit moved the execution of its Replit Agent onto Restate, and the new architecture uses more than ten times as many durable actions as the previous one, the company said. DOSS replaced a BullMQ-based setup with Restate, and a Fortune 500 bank adopted it for financial workflows that must stay consistent across regions. Pulse 2.0 also named BILT Rewards as a user.
The company will use the funding for product development and expansion in the United States, including a new commercial hub in San Francisco, according to Tech.eu.
The team and funding so far
Restate's founders created Apache Flink, an open-source stream processing system used in banking, streaming media and software businesses. Ewen was part of Flink's founding team and later chief technology officer of Data Artisans, which Alibaba acquired in 2019, according to TechCrunch. His co-founders include former colleagues Igal Shilman and Till Rohrmann, and Tech.eu also named Ahmed Forghal, a former Stripe and Meta executive.
In June 2024 Restate raised a $7m seed round led by Redpoint Ventures, with Essence VC, firstminute capital and angel investors including Datadog founder Oli Pomel and Confluent founders Jay Kreps and Neha Narkhede, TechCrunch reported. At the time it released version 1.0 of its software and launched a managed cloud service.
Ewen wrote that the Series A would help the company build a runtime that makes durability, state, communication and coordination feel like normal programming tools.
Company website: restate.dev