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
View allBuilding a Resume-Native AI Assistant for My Portfolio
Designing an assistant that answers from structured portfolio data, uses semantic retrieval over resume content, and safely proxies GitHub Models through Cloudflare Workers.
Building a Git-based CMS architecture using static generation, structured content, and a clean separation between content and UI.
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.
“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.
“I highly recommend Hassan Raza for his outstanding skills and expertise in the field of software development. I had the pleasure of working with Hassan at the National Solutions Convention (NaSCon’18) in Pakistan, where we participated in a software development competition as a team of three and emerged as the winners. During the 24-hour long competition, Hassan displayed remarkable dedication, hard work, and a forward-thinking approach. His ability to work non-stop and deliver quality work within the given time frame was truly impressive. I was amazed by his level of productivity and his attention to detail. Hassan is an intelligent, ambitious, energetic, and proactive perfectionist. His quest for proficiency and excellence makes him an invaluable asset to any team. He is a careful, proactive, self-motivated, and a great team player. Working with him is always a pleasure, and his contributions are always significant. In conclusion, I highly recommend Hassan Raza for any software development projects. His skills, professionalism, and dedication to excellence are unmatched, and his contributions to any project will undoubtedly lead to success.
Latest Writing
View all postsDesigning Observability for Distributed Systems
Building monitoring systems that provide meaningful insight into high-throughput, event-driven architectures.
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
Designing backend systems that handle multiple payment methods with reliability and consistency.
Designing Multi-Tenant Systems Without Compromising Data Safety
Ensuring strict data isolation while enabling shared infrastructure and scalable architecture.