Skip to content
Asghar (Saeid) Kaleji

About

I design and deliver event-driven backend systems that automate complex operational workflows at scale.

With 15+ years of experience across finance and large-scale e-commerce, I focus on translating ambiguous business requirements into reliable, observable, and maintainable systems. My work spans policy-driven services, asynchronous processing patterns, and cloud-native automation.

At Wayfair (Berlin), I worked on the Notifications and Supplier Actions platform, helping decouple legacy PHP workflows into event-driven microservices using Java, Spring Boot, Kafka, and Google Cloud.

Key initiatives included:


How I Think About Systems

I care about:

I enjoy leading initiatives from architecture through delivery — structuring execution, aligning teams, and shipping systems safely.


Writing & Technical Notes

This site contains longer versions of my LinkedIn posts, where I write about:


Current Focus

I’m currently building a deterministic validation pipeline for German E-Invoices (XRechnung / ZUGFeRD), focused on explainable findings, idempotent processing, and audit-friendly workflows.

If you’re interested in backend architecture, workflow automation, or distributed systems design — feel free to connect.