Erwin Van Der Valk
Principal Product Software Engineer at Erwin van der Valk BV
Netherlands
Summary
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Rockstar🎓
Top SchoolErwin Van Der Valk is a Principal Product Software Engineer and seasoned Microsoft-trained architect with over two decades of commercial experience and more than a decade in senior engineering roles, currently shaping product at Duende Software and running his own consultancy. He blends deep .NET/C# and cloud expertise (Azure, AWS), domain-driven design, event sourcing and infrastructure-as-code with hands-on delivery of resilient backend systems, mobile apps and developer tooling. Erwin has led platform and cloud architecture efforts across industries—from insurance at Achmea to fintech and ESG data platforms—often introducing agile practices and test-driven approaches to raise engineering quality. An active open-source contributor, he recently enhanced SQLStreamStore to export cross-database creation scripts with tests, reflecting a focus on practical, portable developer experiences. Known for bridging strategic architecture and day-to-day engineering, he pairs product-minded thinking with an appetite for reusable components and clean design.
11 years of coding experience
26 years of employment as a software developer
Bachelor of Science (BS) Information Technology, Bachelor of Science (BS) Information Technology at Haagse Hogeschool Den HaagBachelor of Science (B.S.) Information Technology, Bachelor of Science (B.S.) Information Technology at De Haagse Hogeschool / The Hague University of Applied Sciences
Stackoverflow
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Github Skills (18)
middleware10
reverse-proxy10
postgresql10
testing10
net10
http10
dotnet10
proxy10
asp-net-core10
xunit10
asp-net10
sql-server10
dotnet-core10
csharp10
error-handling9
Programming languages (7)
Github contributions (5)
SQLStreamStore/SQLStreamStore
Dec 2018 - May 2020
Stream Store library targeting RDBMS based implementations for .NET
Role in this project:
Backend Developer
Backend DeveloperContributions:5 commits, 3 PRs, 1 comment in 1 year 5 months
Contributions summary:Erwin focused on enhancing the SQL Stream Store library, particularly by adding the functionality to export database creation scripts for different database implementations. They added support for SQL Server and PostgreSQL, enabling users to obtain scripts for manual database schema creation. Furthermore, the user implemented and added tests to verify the functionality of exporting these scripts. This was done by adding tests to verify that the database creation script can be correctly exported based on specific schema configurations.
rdbmsstreamscqrsc-sharpstream
Erwinvandervalk/Config.SqlStreamStore
Nov 2018 - Nov 2018
Contributions:1 release, 21 commits, 11 pushes in 4 days
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