Open to opportunities

Ricardo Sapien

@ricardosapien

Message

Senior software engineer building secure, scalable data-intensive web services and owning production.

United States

Message

What I'm looking for

I’m looking for a team where I can own production end-to-end—building secure, scalable, data-intensive services, strengthening CI/CD and reliability, and using observability to drive performance gains.

I’m a Senior Software Engineer with 10+ years building scalable web services and data-intensive platforms across HealthTech and large-scale consumer systems. I focus on end-to-end production ownership—performance debugging, reliability improvements, and secure API design that holds up under real traffic.

At FelixHealthcare.AI, I designed data-product style APIs to unify healthcare workflow data across provider systems, enforcing OAuth 2.0 + RBAC and producing auditable access logs for governance-grade traceability. I also built a high-throughput ingestion and transformation service that reduced end-to-end processing latency by 35% while maintaining correctness with unit tests.

Across my Google and banking experience, I’ve strengthened reliability and operational readiness through containerized deployments and strong CI/CD. I’ve improved incident recovery time by 28%, increased release frequency by 2.1x, and improved mean time to recovery by 22% by pairing automation with maintainable, testable code and clear operational runbooks.

I’m equally hands-on with security and observability. I implement TLS everywhere, validate JWT-based authentication, apply least-privilege authorization checks, and use profiling, distributed tracing, load testing, and capacity planning to remove bottlenecks and deliver measurable throughput gains.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

FelixHealthcare.AI

Dec 2024 - Present (1 year 6 months)

Designed and implemented secure, data-product style APIs that unify healthcare workflow data, enforcing OAuth 2.0 + RBAC and generating auditable access logs. Built high-throughput ingestion/transformation pipelines that reduced end-to-end processing latency by 35% and improved incident recovery time by 28% through containerized deployments and automated health checks.

OAuth 2.0 RBAC Data Pipelines SQL Query Optimization Docker Kubernetes GitHub Actions Performance Profiling CI CD

Senior Software Engineer

Google

Sep 2022 - Dec 2024 (2 years 3 months)

Developed scalable backend components on Google Cloud, improving request latency and reliability via caching strategy and SQL query tuning. Built Kafka-based microservices and strengthened security with TLS and JWT validation, while Testcontainers integration tests and CI/CD automation improved mean time to recovery by 22% during production incidents.

Google Cloud Caching Strategies SQL Tuning Microservices Apache Kafka MongoDB TLS JWT Test Containers CI CD

Senior Software Engineer

Frost Bank

Feb 2018 - Aug 2022 (4 years 6 months)

Delivered backend features for customer-facing banking workflows by implementing maintainable RESTful APIs with clean domain boundaries. Refactored SQL and improved transaction handling to reduce production defects, and partnered with security/compliance to align authentication flows and data handling with enterprise governance requirements.

RESTful APIs Metrics

Software Engineer

Oceans Healthcare

Jun 2015 - Feb 2018 (2 years 8 months)

Implemented healthcare application features focused on data integrity and performance to improve clinical operations. Worked on service integrations and data synchronization, ensuring reliable behavior under intermittent upstream availability while improving code readability and test coverage through refactoring.

Backend Development Data Integrity Performance Tuning Integration Services Synchronization Refactoring Unit Testing Reliability Engineering