Davi R

Backed / AI Software Engineer

VAAS

Feb 2026 - Present • 6 mos

AI Product Innovation • Developed the first Claude MCP integration for a compliance platform in Latin America • Built an agentic layer using MCP + AG-UI for compliance, fraud, and credit analysis • Contributed to a product showcased at LEC 2026 and highlighted by key industry figures in compliance/GRC • Ported a website originally built in Claude Design to Next.js, implementing a comprehensive testing pipeline and a harness that enables the marketing team to open PRs without coding knowledge Core Infrastructure & Performance • Optimized a dashboard that previously failed to load 30 days of data in 30 seconds, enabling it to load approximately 3 years of historical data in ~200ms by creating pre-aggregated tables in PostgreSQL with incremental updates • Refactored high-cost SQL and MongoDB queries, eliminating O(n²) access patterns and redesigning flows to O(n), significantly improving scalability, latency, and resource utilization • Engineered a real-time predictive memory management mechanism for massive data exports that resolved severe Kubernetes CrashLoopBackOff cycles. By implementing algorithms to dynamically pace memory allocation boundaries, it allowed the JVM Garbage Collector to clear memory autonomously, preventing pod bottlenecking, disk spillover, and node evictions • Resolved a long-standing performance bottleneck and OOM-kill issue within the first week of onboarding • Stabilized production environments through low-level Python runtime optimization, replacing default memory allocators with jemalloc and tuning garbage collection cycles • Architected highly scalable data retrieval pipelines by implementing cursor-based pagination, eliminating the performance degradation of traditional offset approaches and maintaining predictable query latency • Created Datadog dashboards to monitor thread contention and CPU usage in real-tim

Software Engineer

Unyx • Autônomo

Jul 2025 - Present • 1 yr 1 mo

• Lead Developer for LatoStudio, a B2B SaaS platform (CRM/ERP). Managed the full lifecycle from architecture to production. • Stack: Architected the solution using Next.js, Tailwind, and Shadcn UI (Web/Mobile) • Backend: Built a scalable Node.js API with secure authentication (JWT/RBAC) and queues. Deployed on Docker with PostgreSQL and Cloudflare R2 • AI Engineering: Implemented a RAG (Retrieval-Augmented Generation) system to power a context-aware chatbot, allowing users to query their own ERP data via AI • Performance: Utilized AI-assisted workflows to accelerate shipping by 3x

Web Engineer & SEO Specialist

RD Byte • Autônomo

Apr 2024 - Present • 2 yrs 4 mos

• Providing ongoing web engineering and digital performance services for SMBs. • Tooling: Developed custom browser extensions to solve specific client needs, utilizing advanced JavaScript and DOM manipulation • Development: Built high-conversion landing pages using WordPress, PHP, and custom HTML/CSS/JS Performance: Optimized sites for Core Web Vitals, achieving high PageSpeed scores through code minification and asset optimization • Analytics: Implemented SEO strategies and configured Google Analytics/Business for data-driven decision making