The Jayawardena Herald
“All the work that’s fit to ship.”
Dulanga
Jayawardena.
Hong Kong—Software Engineer at Bullish
Before Bullish he was at Morgan Stanley, where he built risk systems for front-office trading teams.
His work has spanned Sri Lanka, Hong Kong, and the United States, mostly in Java and Python: distributed systems, automation, and the reliability work that keeps them running.
He also mentors junior engineers and writes about the systems he builds.
On the distributed-systems beat since 2015.
Where the work was done.
Experience across finance, retail tech, and product engineering, with a focus on reliability, clear communication, and mentoring.
Built and operated reliable risk systems for front-office teams across multiple regions.
- Built Java and Spring microservices for risk exposure across equities, derivatives, and FX, improving accuracy and stability
- SME for the prod-parallel environment, driving scalability, performance, and global coordination
- Automated end-of-day and QA workflows with Python, Perl, Bash, and SQL, while providing Level 3 support for JVM and C++ systems across four regions
Notes from the field.
Build notes, research breakdowns, and reflections on engineering, teamwork, and learning in public.
