// profile

Nani

@hernanosaurusHe

Building the better half of the web :P

Open to opportunities

About

Frontend Engineer with a background in creative development, building web and mobile applications using React, TypeScript, and modern JavaScript frameworks. Experienced in real-time systems, enterprise platforms, and API integrations, with a focus on simplicity and usability.

Skills

Languages

TypescriptJavaScript

Frameworks & Libraries

ReactTailwind CSSVue.jsAngularCSSReact NativeJestCypressHTML

Infrastructure & DevOps

Experience

Senior Frontend Engineer
Freelance / Independent Contactor
Nov 2021 — Present
- Sports & Fan Engagement Company — 8 products across mobile and web
  
  Shipped three cross-platform React Native apps (fan engagement, sports analytics, live news) with social and guest authentication, real-time data visualizations for live scores and match schedules, and push notification systems driving timely engagement. Engineered a reusable real-time embeddable content feed over WebSockets for instant third-party updates. Built and maintained high-traffic web properties including a sports news portal and analytics platform, both shipped in multiple localized versions.
  
  React Native · Expo · TypeScript · Vue.js · Pinia · WebSockets · OneSignal · Laravel
- Enterprise Logistics & Transportation
  
  Built frontend features for a multimodal transportation management system during a post-acquisition platform consolidation. Delivered shipment tracking, analytics dashboards, and workflow automation. Co-authored a reusable component library for tables, filters, and forms adopted across multiple TMS frontends, and optimized data-heavy views for performance and maintainability. Worked from a shared priority queue across modules, ramping into unfamiliar areas while maintaining sprint delivery.
  
  Angular · TypeScript · NgRx · SCSS · Bootstrap
Frontend Engineer
Freelance / Independent Contactor
Oct 2020 — Nov 2021
- AI-powered advertising platform — 3 products
  
  Built the MVP of the Ad Library, a searchable database of ad creatives with filtering by format and industry, saved boards, and reuse as input for ad generation — laying the foundation for the shipped product. Developed the frontend for AI Copywriter, supporting prompt-based generation with tone selection; the workflows built here went on to power the launch of AI-Ads. Led frontend development on Sparkle, an internal ticketing and creative request system, building ticket creation, status tracking, and client–designer collaboration flows.
  
  React · TypeScript · Redux · Material UI · SCSS
- Shipping & Order Management Platform
  
  Contributed to shipment creation, tracking, and order management features on a desktop-first shipping and order management platform. Focused on a smooth user experience and clean, scalable frontend code.
  
  React · Redux · TypeScript · SCSS

Links

Github

github.com/hernanosaurus

Porfolio

hernanosaurus.dev/

Developed browser-based applications and interactive front-ends with JavaScript and modern libraries & frameworks.
Built interactive rich media ads and digital campaigns using HTML5, CSS3, JavaScript, and animation tools.
Developed high-performance ad creatives across multiple platforms, optimizing for engagement, responsiveness, and performance.
Created reusable templates and scalable ad formats to streamline marketing campaign production.
Collaborated with creative and development teams to deliver visually engaging, production-ready, and technically optimized digital experiences.

Additional engagements: Creator link & monetization platform (React, TanStack, Tailwind), Web3 digital asset minting platform including NestJS backend APIs (Vue, Pinia, NestJS). Full detail at hernanosaurus.dev.