RelayLink Labs was founded in Tallinn, Estonia, to close the gap between blockchain technology and the businesses that need it. We are a blockchain development company: engineers, architects and security specialists who design, build and operate blockchain systems for enterprises and product teams.
Blockchain technology has matured, but most organisations still struggle to adopt it — not because the networks are weak, but because the engineering discipline around them is. Our mission is to make blockchain adoption predictable: clear architecture, well-tested smart contracts, honest security review, and systems that are still maintainable years after launch.
Every smart contract ships with cryptographic verification and a security review. We would rather delay a launch than compromise security.
Our engineers work across the full stack — consensus, contracts, data and applications. Great blockchain systems are built by people who understand every layer.
Blockchain infrastructure must be dependable. 99.99% uptime is our floor, not our goal.
We build on and contribute to open blockchain standards. Interoperability benefits everyone.
RelayLink Labs incorporated in Estonia by Daniel Kross and Lena Virtanen, veterans of fintech infrastructure and distributed systems.
Our first smart contract engagements ship for financial and supply chain clients.
The internal tooling used on client projects becomes a managed blockchain development platform.
The team grows to more than forty blockchain engineers, architects and security specialists.
Independent audit completed against AICPA trust service criteria.
Blockchain systems in production across finance, supply chain, identity and enterprise consortiums.
Previously led infrastructure at a major European fintech. 12 years building payments and identity systems.
PhD in distributed systems. Former core contributor to multiple open-source blockchain projects.
CISSP-certified security engineer. Previously led security for high-value financial infrastructure.
We are always interested in meeting teams that want to build serious blockchain systems. Read about our open roles or start a conversation about your project.