
Opinr
A shared platform for designing, publishing, and operating practical apps and original games with common identity, data, messaging, and cloud foundations.
Ricardo Abreu · Greater Seattle Area
Open to meaningful backend and cloud opportunities
Senior software engineer building secure C# and Azure platforms, distributed backend systems, and thoughtful products for people.
Products and systems
Three case studies show how I turn ambiguous problems into clear architectures, reasoned trade-offs, and software people can use.

A shared platform for designing, publishing, and operating practical apps and original games with common identity, data, messaging, and cloud foundations.

A publicly available service for routine check-ins, trusted-contact alerts, and discreet communication when something may be wrong.

An online Unity maze and arena experience built around short rounds, changing environments, and coordination between players.
Career
From graph-visualization algorithms at Tom Sawyer Software to secure services at Microsoft, my work connects deep foundations with dependable delivery.
ExperienceSoftware Engineer II
Software Engineer
Product Development Engineer
Computer Science Teaching Assistant
01 / 04
Clarity before complexity
Security by design
Decisions that can be explained
Delivery backed by evidence

Beyond the code
From Balancán to Mexico City and the Greater Seattle Area, my story crosses regions, languages, four years of teaching, and a lasting curiosity for useful technology.
Rigorous engineering, clear communication, and curiosity about the people who will use the system.
Read my story


Contact
If you are building a team or solving a hard backend, cloud, or distributed-systems problem, I would like to understand the context.
Start a conversationricardorodab19@gmail.com