Yesenia M. Perez

Distributed Systems · Cloud-Native FinTech · Trade Execution

Eight years building high-throughput, event-driven systems for regulated financial services. Currently lead engineer on Eclipse OMS at Orion — trade execution microservices processing $5.2T+ in assets across 1,000+ advisory firms. Q1 Performance Excellence Award winner.

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).

Operations Manager

Hospitality & Entertainment Industry

Built and led teams in fast-paced, high-stakes environments before transitioning into software engineering.

Awards & Recognition

2025 · Q1 Winner · Orion Technology

“She exemplifies what a visionary contributor looks like. Someone who sees beyond their defined role, rises to meet challenges that others cannot, and elevates everyone around them in the process.”

2024 · Nominated · Orion Technology

“She has a natural ability to create capacity to perform her role at an expert level, and still help other areas of the business.”

Over a decade managing restaurant and bar operations across multiple establishments — overseeing teams, P&L, staffing, training, and day-to-day operations. The leadership instincts I use now as a technical lead were built here first: running high-pressure environments, communicating across functions, and making decisions with incomplete information.

I spent a decade in hospitality before going back to school for Computer Science. While I was finishing that degree I was bartending, working multiple jobs, paying down debt. A lot of sleepless nights. I got through it, landed my first engineering job, and kept going. What that background gave me didn't come from any course: I know how to talk to people who don't share my technical context, how to make decisions when I don't have everything I need, and how to stay level when production breaks and there's real money involved.

I also run Build con Chispa, a free bilingual community I started because I kept seeing the same two things. Women running real businesses who wouldn't touch AI because they assumed it wasn't for them. Developers who knew all the tools but couldn't seem to finish what they started. Both problems felt solvable. So I show up, I build the curriculum and the tooling and the community itself, and I do most of it after the kids are asleep. What I'm working on is at yessieperez.com.