Senior Frontend Engineer - Web & Mobile Expert

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Dylan A. Carpenter

Senior Frontend Engineer (Web & Mobile)

Address: *** ******** **#*, ********, NY 13204

Mail: ******.**.**@*****.***

Phone: +1-585-***-****

Summary

Senior Frontend Engineer with 11+ years of experience building scalable web and mobile applications across healthcare, fintech, media, and enterprise platforms. Specializes in React, Next.js, TypeScript, and React Native, with strong experience in real-time systems, AI-assisted interfaces, data visualization, and full-stack feature delivery. Proven track record of leading frontend architecture, improving performance, and delivering mission-critical platforms used by thousands of daily users. Experienced in building real-time dashboards, collaborative interfaces, AI-integrated features, and scalable design systems. Known for owning complex frontend platforms, mentoring engineers, and driving cross-team technical initiatives from concept to production.

Key Achievements

• Improved Lighthouse performance scores from 65 to 92 across production applications.

• Reduced frontend bundle size by up to 35% through architecture and dependency optimization.

• Built real-time dashboards used by 10K+ daily active users.

• Led cross-team adoption of design systems and TypeScript across multiple codebases.

• Optimized WebSocket payloads by 55% for large-scale real-time systems.

• Mentored junior engineers into mid- and senior-level roles. Experience

SENIOR FRONTEND/MOBILE ENGINEER BYTES.CO BURLINGTON, VT SEP 2020 –

· Led frontend technical roadmap in collaboration with product and backend teams, aligning architecture decisions with long-term scalability and feature delivery goals.

· Delivered performance and UX improvements that increased user engagement and reduced support tickets related to UI issues.

· Owned frontend architecture for real-time dashboard platforms supporting 10K+ daily active users.

· Led migration from legacy React architecture to Next.js 14, improving Lighthouse scores from 65 to 92 and reducing Time to Interactive by 42%.

· Reduced main bundle size from 1.2MB to 780KB through code splitting, tree shaking, and dependency optimization, improving load times by 30%.

· Designed and implemented a shared design system used across multiple web and mobile modules. Page 2

· Introduced TypeScript across three major codebases, reducing runtime errors and bug reports by 25%.

· Developed cross-platform mobile features using React Native for data-driven user workflows.

· Collaborated with backend teams to design GraphQL APIs, reducing over-fetching by 60%.

· Established error monitoring and observability with Sentry, reducing production bugs by 45% within three months.

· Mentored 4 junior engineers and led architecture reviews, technical planning, and code quality initiatives.

· Defined frontend performance and code quality standards adopted across the team. SENIOR FRONTEND/MOBILE DEVELOPER UNIFIED INFOTECH NEW YORK, NY JAN 2018

– AUG 2020

· Served as frontend technical lead across multiple client projects, coordinating with designers, backend engineers, and stakeholders.

· Standardized frontend architecture patterns across projects, improving maintainability and onboarding speed for new engineers.

· Led frontend architecture for multiple enterprise financial dashboards with real-time data streams.

· Built web and mobile applications using React, Next.js, and React Native for iOS and Android.

· Architected a shared component library adopted by three cross-functional teams, reducing development time by 40%.

· Led technical discovery, planning, and estimation for 5+ enterprise projects, all delivered within 10% of planned timelines.

· Implemented scalable state management with Redux and React Query, reducing boilerplate by 70%.

· Optimized WebSocket payloads by 55%, enabling real-time updates for 5,000+ concurrent users.

· Improved CI/CD pipelines, reducing build and deployment time from 12 minutes to 4 minutes.

· Worked closely with product and design teams to define scalable UI patterns and technical roadmaps.

· Established frontend testing practices using Jest and Cypress. FULL STACK DEVELOPER SYRACUSE DESIGN GROUP SYRACUSE, NY JUL 2013 – DEC 2017

· Acted as primary frontend engineer for client-facing platforms, owning feature delivery, technical decisions, and performance improvements.

· Led frontend architecture for three major client platforms from planning through production.

· Built scalable React-based applications with SSR, code splitting, and performance-focused rendering.

· Migrated a legacy jQuery platform to React, improving feature delivery speed by 50%.

· Developed early cross-platform mobile features using React Native.

· Designed reusable UI components and templates for multi-site deployments.

· Established frontend coding standards and internal best practices.

· Collaborated with backend teams to design and integrate RESTful APIs. Skills & Abilities

• Frontend (Web): React.js, Next.js (SSR, SSG, ISR, App Router), TypeScript (ES6+), JavaScript

(ES6+), HTML5, CSS3, Tailwind CSS, MUI, Ant Design Page 3

• Mobile: React Native (CLI, Expo), Cross-platform architecture, Mobile performance optimization, App store deployment

• Frontend Architecture: Scalable frontend architecture, Design systems & component libraries, Monorepo-friendly structures, Performance optimization & Core Web Vitals, Code splitting & lazy loading, State management (Redux, React Query, Context), Accessibility

(WCAG), Responsive & mobile-first development

• Data & Integration: REST APIs, GraphQL, WebSockets, Real-time dashboards, Data visualization

• Backend (Supporting): Node.js, Express, NestJS, Python (Flask, Django), PHP (Laravel)

• Tooling, Testing & Cloud: AWS (Lambda, S3, RDS, DynamoDB, EC2, CloudWatch), Jest, Cypress, Detox, Frontend testing strategies (unit, integration, E2E), CI/CD pipelines, Git, GitHub, Bitbucket, Webpack, Babel, NPM, Agile / Scrum Education

BACHELOR OF COMPUTER SCIENCE SEPTEMBER 2009 – MAY 2013 SYRACUSE UNIVERSITY

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