Rafael de Souza
@rafaeldesouza
Senior software engineer building scalable, high-throughput SaaS and distributed systems.
BrazilWhat I'm looking for
I’m a Senior Software Engineer with 15+ years of experience in distributed systems, scalable architecture, and performance optimization. I’ve built and scaled high-throughput SaaS platforms—delivering major performance gains and infrastructure efficiencies across enterprise-scale production systems.
At SOCi.ai, I led performance and scalability improvements across the Reputation platform, including refactoring services, optimizing MySQL queries, and targeted denormalization to achieve up to 1000x speedups and reduce a bug backlog by 85%+. I also designed scalable data export pipelines, integrated compliance capabilities via SOCiShield, and onboarded engineers while partnering across teams to unblock and guide complex feature development.
Experience
Work history, roles, and key accomplishments
Senior Software Engineer
SOCi.ai
Jun 2022 - Jul 2025 (3 years 1 month)
Built core components of the GeniusReputation AI agent by designing agent workflows, developing MCP tools, and applying prompt engineering to reduce repetitive responses while maintaining brand guidelines. Drove performance and reliability improvements across the Reputation platform, enabling enterprise reporting for hundreds of thousands of locations with up to 1000x speedups and reducing the bug
Promoted to Senior Software Engineer and Team Lead for a cross-functional team of 4, guiding deliveries and pairing with teammates to unblock issues and accelerate development. Owned the Search Service and improved a SQL-to-NoSQL denormalization pipeline powering fleet dashboards, while maintaining a serverless telemetry pipeline for real-time data from tens of thousands of vehicles.
Developed serverless telemetry logic (AWS Lambda, Node.js, SQS, Kafka) to validate and enrich real-time vehicle data. Introduced shift-left automated E2E testing with QA, and used Amazon CloudWatch to diagnose and fix production issues for service stability.
Freelance Full-Stack Engineer
Enhardened Tecnologia
Apr 2013 - Mar 2021 (7 years 11 months)
Partnered with founders and startup teams to build, rescue, and scale production web platforms end-to-end as the sole engineer. Scaled an online learning platform from hundreds to tens of thousands of users and reduced AWS costs by ~90% through query optimization, caching, and database denormalization; also built a URL shortener with A/B testing that reduced redirect latency from ~190ms to <3ms an
Full Stack Developer
Linuxville
Sep 2009 - Mar 2013 (3 years 6 months)
Built a web application to track progress for auditing and consulting projects, improving visibility and tracking. Enhanced a sales management platform for trade representatives to manage quotes, sales, and commissions, and improved the UX of a web interface used to manage local firewalls.
Education
Degrees, certifications, and relevant coursework
Universidade do Estado de Santa Catarina (UDESC)
Bachelor of Science, Computer Science
2013 -
Enrolled in a Bachelor of Science in Computer Science at UDESC from July to December 2013, but left for medical reasons.
Availability
Location
BrazilAuthorized to work in
Job categories
Skills
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