Principal Software Architect focused on distributed systems, event-driven architectures and cloud-native platforms.

I design and build scalable backend systems and developer-facing infrastructure.

Most of my work is around:

• Event-driven architectures
• Distributed systems & microservices
• Kotlin / Java / Spring
• Cloud-native platforms (AWS, Google Cloud, Kubernetes, OpenShift)

I enjoy working at the intersection of architecture and hands-on engineering.

Open-source library implementing the transactional outbox pattern for reliable event-driven communication in distributed systems.

• Focus on correctness and reliability
• Designed for Spring-based applications
• Integrated into the Spring Modulith ecosystem

https://github.com/namastack/namastack-outbox

I occasionally write about distributed systems and event-driven architectures, mostly based on real-world challenges from projects.

• Never Lose an Event Again — Getting Started with Namastack Outbox
• Outbox Pattern: The Hard Parts (and How Namastack Outbox Helps)
• Never Lose an Event Again (Substack version)

• Principal Software Architect (Freelance)
• 15+ years building distributed systems
• Projects in mobility, public sector and e-commerce

Recent work includes:

• Event-driven platforms processing railway data
• Systems handling 500K+ events per second
• Large-scale search optimization (60M+ products, 11× faster)

Languages
Java · Kotlin

Backend
Spring Boot · Kafka · Microservices

Architecture
Event Driven Architecture · Domain Driven Design · Distributed Systems · Microservices

Cloud
AWS · Google Cloud · Kubernetes · OpenShift

• Design for failure, not for the happy path
• Prefer simple abstractions over complex frameworks
• APIs should be easy to use correctly and hard to misuse
• Focus on long-term maintainability over short-term speed

• LinkedIn: https://linkedin.com/in/roland-beisel

If you're building distributed systems or event-driven platforms, feel free to reach out.