Alexander Langer
Co-Founder at Red Rainbow IT Solutions GmbH
Kempen, North Rhine-Westphalia, Germany
Summary
👤
Senior🎓
Top SchoolAlexander Langer is a seasoned founder and software architect with 13+ years building healthcare-focused systems and startups from concept to production. He combines deep academic grounding (PhD in Computer Science from RWTH Aachen) with hands-on expertise in Domain-Driven Design, CQRS and Event Sourcing, leading engineering teams and co-founding Mestus and Red Rainbow. As a back-end and database engineer he has contributed to notable open-source work on the Marten .NET document DB/event store for PostgreSQL, improving query capabilities and persistence robustness. Comfortable at the intersection of research, product and operations, he thrives on turning complex domain models into maintainable, auditable systems for regulated environments.
13 years of coding experience
13 years of employment as a software developer
Dr. rer. nat. (Ph.D.), Computer Science, Dr. rer. nat. (Ph.D.), Computer Science at RWTH Aachen University
German, English
Stackoverflow
2,893reputation
102kreached
78answers
6questions
domain-driven-design
top-5%
Github Skills (21)
postgresql10
net10
dotnet10
event-sourcing10
asp-net10
document-database10
dotnet-core10
csharp10
marten10
jsonb9
linq9
domain-driven-design9
database-design8
cdi6
design-patterns6
Programming languages (5)
Github contributions (5)
JasperFx/marten
Oct 2016 - Nov 2021
.NET Transactional Document DB and Event Store on PostgreSQL
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:5 commits, 8 PRs, 22 comments in 5 years 2 months
Contributions summary:Alexander made several contributions related to enhancing the functionality and maintainability of the Marten document database and event store. They implemented support for JSONB operator intersections within queries and added a test case for subclass querying using the document store. Additionally, the user refactored and corrected an issue with document persistence, specifically improving how referenced assemblies are handled during code generation. This work demonstrates a focus on extending query capabilities and resolving underlying persistence mechanisms.
dotnetmartenevent-sourcingtransactionalsql
sequoia-mso/sequoia-tests
Oct 2012 - Oct 2012
Contributions:2 commits in 1 day
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