Sadiq Ali Khan
Senior Full-Stack Software Engineer · Cloud Architecture · Open Source Contributor
5+ years architecting multi-tenant enterprise platforms, contributing to Symfony Core (25+ PRs) and Google API client, and designing resilient APIs handling 10M+ monthly requests.
Available for Senior Backend, Full-Stack & Staff Engineering opportunities (Remote & Global).
01 — About
Architecting systems for scale & resilience.
I'm a Senior Full-Stack & Backend Software Engineer with 5+ years of production experience designing high-scale SaaS architectures, distributed systems, and multi-tenant ERP platforms. At Qbil Software (Netherlands), I lead backend development across 40 physical commodities enterprise tenants trading millions in physical goods, operating on a unified codebase with zero forks. I am an active open source contributor to the Symfony Core and Google API client, passionate about Domain-Driven Design (DDD), sub-millisecond database queries, and developer ergonomics.
Sadiq Ali Khan
02 — Toolkit
The stack I engineer with.
Production-tested tools and languages powering mission-critical applications.
03 — Selected work
Featured systems & open source.
Multi-tenant platforms, official open-source patches, and real-time developer tooling.
Project archive
04 — Experience
Where I've shipped.
Qbil Software
Senior Full-Stack Software Engineer
May 2021 – Present
Veenendaal, Netherlands (Remote)
Engineering core multi-tenant SaaS architecture for European agricultural and commodity trade ERP, supporting 40 enterprise tenants trading cocoa, dairy, and grains with 99.9% uptime.
05 — How I think
“Great engineering isn't just writing code; it's building systems that endure.”
I believe modern software systems must balance strict domain invariants with operational pragmatism. Whether isolating data across 40 enterprise tenants, optimizing B+Tree indexes for heavy write workloads, or contributing patches back to upstream open-source frameworks, the goal is always clear: build resilient, maintainable, and observable software that business can rely upon.
06 — Inside my mind
Systems, visualised.
Three core architectural patterns that power my production platforms. Click to watch data move.
Illustrative architectural patterns implemented across my production and open-source systems.
07 — Education
Foundations.
Sharda University
Bachelor of Technology — Computer Science & Engineering
2017 – 2021
B.Tech CSE
Want the full engineering track record?
Explore my full career history, system design patterns, and open-source contributions in an ATS-compliant 1-page format.
Download Resume (PDF)