Alexsandro Felix

Financial systems don’t fail because of bugs, they fail because of poor technical decisions.

I design and build reliable backend systems for financial environments, where predictable performance, low latency, and operational resilience are non-negotiable.

My work involves distributed systems, integration with external dependencies, handling critical legacy constraints, and ensuring systems behave correctly under failure conditions.

I operate in contexts where availability, consistency, and performance directly impact business outcomes.

My focus is on:

– Reliability and failure isolation.

– High-throughput distributed systems.

– JVM performance and system efficiency.

– Event-driven architecture.

– Practical AI integration in enterprise systems.

I believe technical decisions are business decisions. System design, architecture, and operational behavior must be treated with precision and accountability.

I am interested in high-impact environments such as banks, fintechs, and global consulting firms, working on systems that require scale, resilience, and strict reliability.

I write the Systems Engineering Notes series, which documents applied engineering decisions on performance, resilience, and real-world system behavior, not theory.