Vetted Testing Professionals

Kaiqi Zhang

Screened

Senior Full-Stack Engineer specializing in cloud-native SaaS and AI applications

Bellevue, WA13y exp

“ML/LLM engineer with hands-on experience shipping production RAG systems at Google Clinical Search and GenAI recommendation/summarization features in Meta Ads. Stands out for combining research-to-production execution with rigorous grounding, evaluation, safety checks, and reusable Python platform components that improved both reliability and team velocity.”

“Engineer with startup experience building AI-powered internal knowledge and support products from ambiguous early-stage concepts into production systems used by multiple teams. Particularly strong in end-to-end LLM product delivery across backend orchestration, retrieval, observability, security, and full-stack user experience, with clear impact on productivity and self-service adoption.”

“Senior engineering leader with deep hands-on architecture experience across fintech and enterprise software. At DriveWealth, he led a major backend replatform for a brokerage platform handling 10M+ trades per day, combining event-driven design, Kinesis/Kafka, and regulatory-grade accuracy; at TIBCO, he built a Kubernetes-based API management product from near scratch into a successful revenue-generating offering.”

“Security-oriented software engineer with experience building high-impact internal and platform features at TikTok and Reddit, including session hijacking prevention, an internal password manager, and a reusable Android passkey SDK. Stands out for combining backend/API ownership, user-driven product improvements, and deep attention to security, performance, and cross-platform compatibility.”

Gabriel Aguiar

Screened

Entry-Level Software Engineer specializing in AWS cloud infrastructure and distributed systems

Arlington, VA1y exp

“Robotics software engineer with hands-on ROS 2 experience who helped build an autonomous 5-DOF robotic arm that plays Backgammon, owning perception (OpenCV) and game-logic while adding robustness features like lighting tolerance and auto-calibration. Also worked on a Raspberry Pi/LiDAR car project, improving mapping accuracy through data-logged calibration and contributing to multi-robot collision-avoidance coordination via a server-based pub/sub system.”