Wellington Fan

I am a Senior Software Engineer with 15+ years of experience designing and scaling enterprise systems, specializing in high-availability infrastructure, identity management, and data-driven application development.

I have a proven track record of owning mission-critical platforms processing 10K+ TPS with 99.99% uptime, modernizing legacy systems with secure APIs and event-driven architectures, and building tools that accelerate business decision-making across finance, marketing, and operations.

I’m skilled at driving cross-functional initiatives, from establishing enterprise-wide compliance standards to developing statistical frameworks that improve monitoring accuracy.

Expertise: Systems Architecture, API Design, Identity & Access Management, Distributed Systems, High Availability, Scalability, Fault Tolerance, Cloud Security, Compliance Management, Risk Assessment, Data Integration, Workflow Automation, Performance Optimization, Incident Response, Forecasting, Stakeholder Communication, Cross-Functional Collaboration, Technical Leadership

Recent Professional Experience

Capital One

• Held ownership of mission-critical infrastructure, managing API Gateway components processing 10K+ transactions per second with 99.99% uptime, ensuring high availability and reliability at scale.
• Spearheaded enterprise security compliance, leading the Application Program Review Working Group to publish a standardized framework for reporting application entitlements, roles, grants, and permissions, including documentation, example artifacts, and an automated script to validate outputs against Gateway Data Service.
• Elevated operational excellence by introducing statistical methods to alarm tuning, reducing monitoring false positives while maintaining sensitivity to true incidents, and educating engineering peers.

PSYOP

• Architected a unified identity system integrating on-prem Active Directory, Azure AD, and third-party vendor platforms, streamlining account provisioning and reducing administrative overhead.
• Built and maintained a distributed database platform supporting remote offices with 99.9% availability and enhanced observability for proactive issue resolution.
• Crafted internal tools and dashboards for operations, marketing, and finance, increasing cross-team agility and reducing IT dependency for reporting and insights.
• Headed the modernization of legacy systems, implementing secure APIs, event-driven data pipelines, and pub-sub integrations via RabbitMQ, enabling scalable and reliable inter-application communication.