Daan Boerlage is a pragmatic technology leader and Chief Technology Officer with 11 years of experience building and scaling distributed systems and microservices across AWS and GCP. He has a strong track record of founding platform teams, driving DevOps adoption, and governing multi-region cloud infrastructure that served hundreds of engineers and globally distributed users, including deployments with low-latency China coverage. Hands-on across languages (C#, TypeScript, Go, Rust) and tools (Terraform, Docker, CI/CD), he’s delivered high-throughput systems—formerly routing tens of millions of orders annually—and standardized engineering practices to improve cross-team collaboration. An active open-source contributor, Daan has improved TypeScript type safety in the widely used DefinitelyTyped repo, reflecting his attention to developer experience as well as runtime reliability. Colleagues know him for a curious, can-do mindset and a willingness to take on problems beyond his comfort zone.
11 years of coding experience
9 years of employment as a software developer
EFZ Kaufmann, EFZ Kaufmann at HKV & HFW Schaffhausen
The repository for high quality TypeScript type definitions.
Role in this project:
Back-end Developer
Contributions:8 commits, 4 PRs, 6 comments in 25 days
Contributions summary:Daan primarily contributed to the development of TypeScript type definitions within the `definitelytyped/definitelytyped` repository, focusing on the `openapi-factory` and `microservice-utilities` libraries. Their work involved adding new type definitions, fixing existing ones, and improving the overall type safety and correctness of these libraries. They also updated example code to align with type definitions. The user's contributions demonstrate a focus on enhancing the developer experience by providing accurate and helpful type information.
Contributions:1 release, 95 commits, 6 PRs in 1 year 5 months
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Daan Boerlage - Chief Technology Officer at Mavexa