Financial Infrastructure • Distributed Systems • AI-Driven Systems
Designing systems that move money, data, and decisions at scale
I build systems that handle money, data, and scale reliably and at production depth.
Financial Systems at Scale
SNAPSHOT$1B+
Annual Transaction Volume
1,000+
Organizations Supported
15M+
Transactions Processed
5M+
Records Migrated
Systems Behind Money, Data, and Decisions
I design systems that move money, process data at scale, and enable intelligent decision-making across modern financial platforms.
High-throughput payment and financial processing systems.
Scalable data pipelines and distributed job orchestration.
AI-driven data access and analytics with strong isolation guarantees.
Featured Projects
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Designing a Content System That Scales Beyond a Portfolio
Building a Git-based CMS architecture using static generation, structured content, and a clean separation between content and UI.
Building Financial Infrastructure for Modern Nonprofits
Building Financial Infrastructure for Modern Nonprofits
Designing systems that enable scalable, reliable, and intelligent financial operations for nonprofit organizations.
Recommendations
View all“Hassan was a contract SDE on my team, and he has been a great resource. One of his super power is learning way faster than you expected and taking full ownership of all projects from end to end. He has provided concise, timely and long term solutions for the features he worked on. Hassan is always keen to understand more about product and AWS technologies that the team uses. Hassan is a true team player.
Feng Wei
Senior Engineering Manager, Amazon Inc
“Hassan was nothing short of amazing. During his tenure at Amazon, He consistently demonstrated technical skills and a self driven mindset. His deep understanding of AWS was not accelerated project timelines but also enhanced our overall efficiency. His collaborative work ethic made him a central figure in most of our team projects, and enhanced our team's capabilities at Amazon. I am confident that Hassan will be an extraordinary addition wherever he goes.
Peter Chen
Sr. Software Development Engineer, Amazon Inc
“Hassan Raza is an exceptionally smart individual, he has experience with multiple technologies from Web to Backend to Mobile. Java, Node, React, Angular, AWS, Python and more just name the technology and this guy has it in his Tech Stack. A very good problem solver, quick to learn, embrace challenges and get the work done. I highly recommend Hassan for Software Engineer position in any company that needs the top talent.
Vishal Kumar
Senior Android Engineer, Walmart Labs
Latest Writing
View all postsDesigning Observability for Distributed Systems
Designing Observability for Distributed Systems
Building monitoring systems that provide meaningful insight into high-throughput, event-driven architectures.
Modernizing a Platform Without Breaking What Works
Modernizing a Platform Without Breaking What Works
A practical approach to evolving legacy systems into scalable architectures while maintaining reliability and continuity.
Integrating Payment Systems in Real-World Applications
Integrating Payment Systems in Real-World Applications
Designing backend systems that handle multiple payment methods with reliability and consistency.
Designing Multi-Tenant Systems Without Compromising Data Safety
Designing Multi-Tenant Systems Without Compromising Data Safety
Ensuring strict data isolation while enabling shared infrastructure and scalable architecture.