Open to opportunities

Nicholas Petrillo

@nicholaspetrillo

Senior frontend software developer specializing in TypeScript, scalable UI architecture, and regulatory-grade web applications.

United States

Message

What I'm looking for

I seek a senior frontend role where I can lead architecture, mentor engineers, build scalable, observable, secure web apps, and work cross-functionally in high-quality, regulated environments.

I am a Senior Frontend Software Developer with 12 years of experience designing and delivering large-scale, customer-facing web applications with a strong emphasis on performance, reliability, and regulatory-grade quality.

I own features end-to-end, drive frontend architectural decisions, and collaborate closely with API, product, QA, and design teams to translate complex technical and regulatory requirements into intuitive, high-impact user experiences.

I have deep expertise in TypeScript, modern frontend frameworks (React, Vue.js), frontend performance optimization, CI/CD, observability, and web security, and I have led quality and compliance initiatives in regulated environments including FDA-related practices.

I mentor engineers, build reusable accessible components and scalable UI systems, and maintain thorough technical and compliance documentation to support long-term sustainability and reliable delivery.

Experience

Work history, roles, and key accomplishments

Current

Lead Software Engineer

Current

Wayfair

May 2022 - Present (3 years 7 months)

Owned end-to-end design and delivery of large-scale, data-rich React frontends, driving architectural standards and performance optimizations that reduced load times and improved responsiveness across global products.

TypeScript React Frontend Architecture Performance Optimization CI CD Observability Web Security

Senior Software Engineer

Presidium Health Corp

Oct 2018 - Apr 2022 (3 years 6 months)

Led development of FDA-regulated, customer-facing TypeScript frontends, owning features end-to-end and implementing compliance, testing, and documentation practices that ensured reliability and traceability.

TypeScript Frontend Frameworks Regulatory Compliance Testing CI CD Observability Performance Optimization Security

Software Developer

Outreach Corporation

Mar 2016 - Sep 2018 (2 years 6 months)

Developed and maintained large-scale React/TypeScript SaaS frontends, implementing modular architectures and performance fixes that improved critical user journeys for enterprise customers.

TypeScript React Modular Architectures REST APIs Performance Profiling Testing

Full Stack Developer

Patreon

Sep 2013 - Feb 2016 (2 years 5 months)

Built interactive, responsive web interfaces and improved legacy frontend codebases to support creator workflows, enhancing cross-browser reliability and frontend build/deploy processes.

JavaScript HTML5 CSS3 Responsive Design Build Tools Collaboration