Distributed systems engineer and technical lead

I lead public-facing systems that scale for millions of users.

I’m Sahan Serasinghe, a seasoned distributed systems software engineer and software architect with more than a decade of experience building and leading production systems at GitHub.

Alongside designing public-facing services, I build internal tools and improve developer experience so engineers can ship with greater confidence. My work spans .NET, Python, Go, TypeScript, Kubernetes, and Azure.

Explore my work →Watch my talks

Adelaide, Australia

Working globally

15+ years: Production engineering
463K+ pageviews: Engineering writing since 2019
DevEx: Internal tools and workflows

What I care about

Reliable systems. Productive engineers.

I work at both ends of that equation: operating public distributed systems at scale and improving the internal tools and workflows used to build them. This notebook turns those production lessons into practical field notes.

Distributed systems

Public services designed to remain reliable, understandable, and operable at scale.

Developer experience

Internal tools, workflows, and platform improvements that make the right path the easy path.

Python engineering

Packaging, automation, and maintainable foundations for productive Python teams.

Cloud native

Kubernetes, Azure, and the operational lessons behind resilient software.

Proof of work

Ideas people return to.

Browse all writing →

Popular writing

Selected talks

View all →

Publications

Researching better ways to understand software logs.

iLSE - An Intelligent Web-Based System for Log Structuring and Extraction, APSEC 2017
LogXtractor - An IDE for Log Structuring and Extraction, 2016

Recognition

A few milestones along the way.

Best Academic Research Paper - LogXtractor
Microsoft Imagine Cup National Finals - 1st Runner Up
Gold Medal for Outstanding Performance in Software Engineering

Credentials

A broad technical foundation.

Certifications are not the work, but they reflect the range of systems I’ve spent time learning deeply. I also hold a Master’s in Data Science from the University of Illinois Urbana-Champaign.