MetalBear, based in Tel Aviv, is the creator of mirrord, an open source development solution that eliminates bottlenecks in cloud-native development by enabling local code to run in production-like conditions instantly.
Founded by cybersecurity experts Aviram Hassan (CEO) and Eyal Bukchin (CTO), the company helps developers ship faster, more reliable software. With 25 employees across 14 countries, MetalBear serves thousands of developers at Fortune 100 enterprises.
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MetalBear, creator of the popular open source Kubernetes development solution mirrord, today announced it has raised $12.5 million in Seed funding led by TLV Partners with participation from TQ Ventures, MTF, and Netz Capital.
Prominent angel investors include David Cramer, co-founder of Sentry, and Ben Sigelman, co-creator of OpenTelemetry. The funding comes as enterprises confront a paradox: while AI dramatically accelerates code creation, developers continue to waste valuable time waiting to test code in realistic cloud environments.
The Pain
The rise of microservices architecture has transformed how modern software is built, with enterprises now managing hundreds or thousands of interconnected services. Yet this evolution has created a critical bottleneck: developers working on a single service cannot effectively test their code within the context of the larger application.
They resort to incomplete local testing with mocks that don’t reflect real cloud conditions, then queue for hours and even days to access shared staging environments.
Some organisations spend millions annually on per-developer cloud environments, only to find these still require deployment cycles and shift maintenance burdens onto individual developers, creating yet more bottlenecks.
The Solution: 30% fewer bugs
MetalBear’s mirrord fundamentally changes this dynamic by letting developers connect their local code directly to their cloud environments. With a single switch in their IDE, developers can instantly give their code access to remote databases, APIs, queues, and services without deploying anything.
The technology works by injecting itself into the local development process and intercepting all input/output operations at a low level, seamlessly proxying them to the remote environment.
“The first-time developers use mirrord, they often can’t believe what they’re seeing,” said Aviram Hassan, CEO and co-founder of MetalBear. “They toggle a button in their IDE, hit debug, and suddenly their local code is interacting with other microservices, remote databases, message queues, and third-party services as if it were running in the cloud. We’ve even seen teams where mirrord lets them run their code locally for the first time. Before, there were just too many dependencies to run locally, so all they could do was deploy and hope.”
mirrord has already been adopted by thousands of developers at leading technology companies including NVIDIA, AWS, and Apple, with teams reporting 80% faster test iterations and 30% fewer production bugs.
Its paid enterprise version enables multiple developers to work simultaneously on the same environment without conflicts, using traffic routing and queue splitting to ensure each developer only receives the data meant for their specific tests. This allows entire teams to share a single staging environment as if each developer had their own, eliminating both bottlenecks and costs.
Based on the press release of the company. Selected as relevant, shortened and lectured by VonNaftali. Pic AI-generated. Illustrative.