JUjustin User
@justinuser9
Senior Frontend Engineer delivering scalable, accessible, AI-integrated web applications.
United StatesWhat I'm looking for
I am a Senior Frontend Engineer and Web Platform Architect with over 12 years building enterprise-scale web applications across finance, logistics, civic tech, and SaaS. I specialize in modern frontend frameworks — React, Next.js, Angular, and Vue — and focus on performance, accessibility, and scalable component-driven architecture.
I have led architecture and development for high‑visibility platforms, designing SSR/SSG solutions, micro-frontend architectures, and reusable component libraries while integrating cloud services (AWS, Azure) and AI-powered features to drive measurable business impact. My work includes implementing CI/CD pipelines, automated testing with Jest/Cypress/Playwright, and performance optimization that reduced load times substantially.
I am a hands-on mentor and cross-functional collaborator who champions accessibility (WCAG/ADA), code quality, and agile best practices. I enjoy solving complex technical challenges, enabling independent delivery across teams, and leveraging AI and cloud services to improve user outcomes and operational efficiency.
Experience
Work history, roles, and key accomplishments
ADLead frontend architecture for Addepar’s institutional investor platform, building SSR/SSG dashboards and microfrontend systems that reduced deployment conflicts by 35.3% and introduced AI-powered analytics to improve investor workflows.
Senior Frontend Engineer
Invesco
Feb 2022 - Oct 2024 (2 years 8 months)
Led modernization of global portfolio management apps with component-driven design and SSR/SSG dashboards, implementing performance optimizations that reduced page load times by 39.6% and integrating ML-driven analytics.
Web Developer
Voatz
Jul 2019 - Jan 2022 (2 years 6 months)
Developed secure, ADA-compliant election portals with end-to-end voting workflows and CI/CD-integrated testing, supporting thousands of simultaneous voters and secure OAuth2/JWT authentication.
Web Developer
Tank Design
Oct 2015 - Jul 2019 (3 years 9 months)
Delivered prototypes and production applications for FedEx enterprise systems in 13 countries and 7 languages, built design systems serving millions of users, and implemented CI/CD and automated testing practices.
UI Developer & Mobile
Travelers
Jun 2014 - Sep 2015 (1 year 3 months)
Developed responsive SPAs for identity management and mobile productivity solutions during the IT Leadership Development Program, performing automated testing and performance audits on enterprise apps.
Junior Web Developer
EMPAC
Apr 2012 - Apr 2014 (2 years)
Migrated static sites to Drupal 7, improving content publishing efficiency by 300% and implementing caching and performance optimizations with Varnish and Memcache.
Education
Degrees, certifications, and relevant coursework
RIRensselaer Polytechnic Institute
Bachelor of Science, Information Technology & Web Science
2010 - 2014
Activities and societies: EMPAC Junior Web Developer internship; migrated sites to Drupal, performance optimization, contributed to open-source projects
Completed a Bachelor of Science in Information Technology & Web Science, focusing on web development and information systems.
Availability
Location
United StatesAuthorized to work in
Job categories
Skills
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