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Tony Sauvageau

Senior Full-Stack Engineer | React, TypeScript, Next.js

Senior Full-Stack Engineer with 20+ years of experience building scalable applications at Aumni (acquired by J.P. Morgan) and startups. Expert in React, TypeScript, and Next.js with proven track record of leading teams, optimizing performance, and delivering high-quality software through comprehensive testing. Passionate about mentoring developers and establishing engineering best practices.

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Work Experience

Aumni (Acquired by J.P. Morgan)

Software Engineer III

09/2021 — Present
  • Mentored junior engineers and established coding standards, improving team productivity.
  • Eliminated n+1 query issues in front-end data processes, reducing load times by 40%.
  • Led route migrations from React on Rails to Next.js Pages Router, improving developer experience.
  • Built Ruby on Rails API endpoints supporting Next.js applications, enabling new features.
  • Implemented Storybook integration, improving component documentation.
  • Achieved 85% test coverage with Cypress and Vitest, reducing production bugs.

Convina

Software Engineer

01/2018 — 09/2021
  • Led development team delivering 2-4 MVPs annually using AWS, PostgreSQL, PHP, and React.
  • Managed team of 2 developers, improving delivery speed by 40% through process optimization.
  • Built REST API endpoints in PHP, enabling seamless front-end integration and new features.
  • Designed responsive UIs in Sketch and implemented with React, improving user engagement by 25%.
  • Engineered reusable UI components for the organization’s component library.
  • Published mobile apps on App Store and Google Play using React Native that processed 100+ transactions per event.

BWP Communications

Software Engineer

06/2016 — 01/2018
  • Developed WordPress themes and PHP plugins, improving client website performance by 35%.
  • Built custom WordPress solutions in collaboration with stakeholders and design teams.
  • Launched React Native mobile applications, enhancing accessibility and user experience.
  • Created responsive user interfaces, improving usability across devices by 40%.

Freelance

Application Architect

04/2008 — to infinity and beyond
  • Acquired clients and delivered 25+ projects, starting with a board game sales website in 2008.
  • Developed full-stack applications using Supabase, Next.js, and Tailwind, hosted on Vercel.
  • Created and launched mobile apps with EAS, Expo, and React Native for Google Play and App Store.
  • Designed user interfaces using Sketch, Figma, and Photoshop, improving client satisfaction.
  • Optimized CI/CD pipelines and leveraged GitHub Actions, reducing deployment time.
  • Hired and managed development teams, utilizing Jira for effective project tracking.
  • Implemented LaunchDarkly for controlled feature rollouts, reducing production issues.

Featured Projects

Align Nutrition

Align Nutrition

Multi-tenant all-in-one business solution for personal trainers with branded mobile app included. Complete platform with web apps and mobile apps deployed to the app store.

Next.js 15 Supabase +6
AI Date Planner

AI Date Planner

AI-powered date night planner with personalized suggestions using OpenAI GPT-4o. Features questionnaire flow, chat-based recommendations, user authentication, and location autocomplete.

Next.js 15 OpenAI API +3
Source Preview
Santorinis Greek Grill

Santorinis Greek Grill

A React Native mobile app for a local Greek restaurant, featuring a dynamic menu, catering information, and smooth animations built with NativeWind and Expo.

React Native Expo +3
Source
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Interactive Tutorials

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Latest Articles

5 Habits That Separate Great Frontend Developers from the Rest

5 Habits That Separate Great Frontend Developers from the Rest

Discover the essential habits that transform good frontend developers into exceptional ones. From code organization to performance thinking, learn the practices that will elevate your frontend development game.

Frontend Development Software Development Web Development +3
View All Articles

About Me

Hey! I'm Tony, a senior frontend engineer who's been building web stuff for over 20 years. I love React, TypeScript, and making apps that actually work well. At Aumni (acquired by J.P. Morgan), I helped modernize their frontend stack and mentored the team. These days I'm building AI-powered apps and mobile experiences. I'm all about clean code, good performance, and helping teams ship better products. Let's build something awesome together!

Tony Sauvageau

Mentorship

Level Up Your Engineering Career

Join an exclusive mentorship program with limited spots available. Get personalized guidance from a senior engineer who's been in the trenches for 20+ years. Whether you're transitioning to React/TypeScript, optimizing performance, or advancing your career, I'll help you accelerate your growth and avoid common pitfalls.

What You'll Get

  • Code Review Sessions: 60-minute focused sessions for specific technical challenges ($150/session)
  • Career Growth Program: Structured monthly guidance for career advancement ($500/month)
  • Premium Growth Program: Intensive monthly guidance with more sessions ($800/month)
  • Private Community: Invite-only Discord and Slack channels for ongoing support
  • 24/7 Support: Quick response times and friendly, helpful approach

Perfect For

  • Engineers transitioning to React/TypeScript
  • Developers looking to optimize performance
  • Professionals seeking career advancement
  • Anyone wanting to join a supportive engineering community

Why Engineers Choose My Mentorship

20+
Years of Experience
24h
Response Time
∞
Friendly Approach

Private Community Access

Invite-only Discord and Slack channels for ongoing support

Discord
Slack

Join the Waitlist

Limited spots available - join the waitlist for exclusive mentorship

Join Waitlist

Let's Build Something Awesome

Ready to start your next project? Fill out the form below and I'll get back to you within 24 hours.