Yesenia M. Perez

Stack: Java · Spring Boot · Node.js · TypeScript · AWS Lambda · ECS · API Gateway · SQS/SNS · MassTransit · RabbitMQ · DynamoDB · Redis · FIX Flyer · Terraform · Docker

• $5.2T+ AUA on platform — Lead engineer on Eclipse OMS trade execution microservices supporting 1,000+ RIA firms; integrated FIX Flyer protocol reducing trade execution from hours to minutes. (Assets under administration, per Orion public disclosures.)
• 40% faster incident detection — Built Datadog/CloudWatch observability with centralized correlation IDs; implemented Redis distributed locking and DynamoDB saga persistence ensuring atomic, zero-loss trade processing.
• Zero-downtime migration — Led monolithic Node.js → .NET microservices via MassTransit and pub/sub; contributed Terraform configuration and collaborated with DevOps on IAM policies and AWS account integration.
• Scaled a Lambda-based portfolio rebalancing engine using SNS/SQS and Spring Boot to process multi-client portfolios in seconds.
• 25% sprint velocity improvement — Led post-acquisition engineering team merger; established unified architecture standards and design review processes across the combined onshore and offshore organization.
• Represented engineering in strategic discussions with CTO and VPs, contributing to annual roadmap decisions.

Stack: Java · C# · .NET Core · Node.js · Vue.js · Vue Router · AWS · MySQL · REST APIs · Maven

• 10 hrs → 3 hrs overnight processing — Replaced API-based data ingest with bulk file streaming and parallel processing across integrations; e.g., eMoney batch file processing reduced from 5 hours to 2 hours. Overall overnight job runtime cut by ~70% across 450+ advisory firms.
• Vue.js front-end rebuild from React — Led full migration: 4 dynamic draggable pages and a 9-component dashboard using Vue Router, replacing the legacy React application end-to-end.
• Owned 30+ partner API integrations (custodians, portfolio management systems, CRMs, financial planning tools); primary point of contact between engineering, product, and integration partners.
• Designed risk questionnaire engine to evaluate and quantify portfolio risk levels, automating personalized advisor recommendations.
• Promoted to Lead through demonstrated ownership — architectural modernization, code reviews, CI practices, mentoring junior engineers, and full-stack accountability in a high-velocity bootstrapped startup (35+ releases/year).