Hello.
I'm Daniel Joffe.
Senior Frontend Engineer
I optimize applications.
I build scalable design systems.
And I love eliminating engineering bottlenecks.
Teams I've worked with
I've worked with these companies to build fast, beautiful, and inclusive digital experiences.
My Achievements
🚀
Lightning Fast
Reduced mobile load time from 10s to 2s at FightCamp.
📊
Empowered Teams
Decreased Content team's developer dependency by 80% at FightCamp.
⚡
Explosive Growth
Increased campaign page launches to 200+ in 2 months at Winc.
♿
Accessible for All
Achieved WCAG compliance across legacy systems at The Library Corporation.
🎯
Talent Unlocked
Mentored junior developers—one promoted to Senior, another went to JPL.
🎨
Frictionless Launches
Built a self-serve CMS enabling 200+ landing pages at Winc.
🔧
Rock-Solid Delivery
Built React component library adopted by 80% of apps at Internet Brands.
👨💼
Leadership Secured
Interviewed 13 candidates, hired key Senior Developer at Internet Brands.
My Methodology
🔍
I Audit Before I Build
At FightCamp, a routine R&D Friday turned into a performance investigation. I discovered HD images and 800MB videos loading on every page visit. The fix? Lazy loading, srcset optimization, and bundle analysis—resulting in a 62% smaller bundle and 80% faster load times.
🚀
I Build for Autonomy
Marketing teams shouldn't wait on engineering to launch a landing page. At Winc and FightCamp, I built CMS tooling that let non-technical teams ship independently—200+ pages at Winc, 80% fewer engineering requests at FightCamp.
📊
I Measure What Matters
Lighthouse scores, bounce rates, Core Web Vitals—I treat performance as a feature. At FightCamp, systematic optimization lifted Lighthouse from ~35 to ~80 and cut mobile bounce rates by 39%.
🌱
I Invest in People
Five developers I've mentored have gone on to promotions and dream jobs—including one now at JPL. Component architecture is learnable. Curiosity and drive aren't.
Let's Build Something Great Together
Available for contract projects and fractional engineering engagements. Let's talk about your project.