I am a highly experienced Senior Frontend Developer specializing in building high-performance, scalable web applications using Angular, TypeScript, and the surrounding ecosystem. My expertise spans performance optimization (Core Web Vitals, LCP, SSR), robust state management (RxJS, NgRx, RxAngular), and modern Monorepo architecture using Nrwl Nx.
I am passionate about developer experience, automation, and maintaining a high standard of code quality through tooling and CI/CD pipelines. I possess solid fullstack experience with Node.js/Fastify.js and Python/Django, allowing me to architect and deliver end-to-end solutions.
- Frontend Architecture: Angular (including Zoneless/Signals-based approaches), TypeScript, RxJS, NgRx, RxAngular.
- Web Performance: Deep understanding of Core Web Vitals (CWV), SSR, Image Optimization, and implementing Immutable Web Apps for maximum caching and reliable deployments.
- Monorepo & Tooling: Strong experience with Nrwl Nx, developing custom generators/executors, distributed caching, and integrating with GitHub Actions.
- Fullstack & Backend: Proficient with Node.js (Fastify.js, Nest.js), Python (Django, Flask), and relational databases (PostgreSQL, MySQL, and MariaDB).
- DevOps & Automation: Experienced with GitHub Actions, AWS CDK, CDKTF, Docker, and Serverless Framework/AWS Lambda.
I actively contribute to major projects in the Angular/Reactive Programming ecosystem.
| Project | Contribution Type | Notable Impact |
|---|---|---|
| NgRx (State Management) | Code Modernization & Migration | Migrated codebase unit tests from Jest to Vitest to enhance build and test performance. See PR #5034, PR #5035, PR #5036. |
| RxAngular (High-Perf UI) | Bug Fixes, Code Coverage, Maintenance | Demonstrated strong RxJS experience by utilizing marble tests to validate Observable data flow logic. See PR #1422, PR #1378. |
| Leaflet (Mapping Library) | Core Improvements | Contributed a key improvement to the widely-used Leaflet library. See PR #8504. |
| carbon-components-angular (Design System) | Component Enhancement | Contributed to the Angular implementation of the Carbon Design System. See PR #2270. |
- Web Vitals Champion: Launched a website revamp at Edamama, achieving green Core Web Vitals (CWV) scores of 84-95 on mobile, a significant improvement from previous scores of up to 65.
- Performance Engineering: Reduced customer-facing website page loading times from 4-10s to 15-100ms using CloudFront edge caches, resulting in a 90-95% reduction in Largest Contentful Paint (LCP).
- RxJS/Angular Prowess: Introduced High Performance Angular concepts, leading to a Zoneless Angular Architecture using RxAngular and heavy use of RxJS to facilitate efficient Change Detection.
- Internationalization Lead: Spearheaded the successful i18n/l10n strategy and implementation for ClickUp's global expansion, establishing Continuous Localization pipelines.
- Certified Senior Angular Developer (Certificates.dev)
- RxJS Masterclass (Ultimate Courses)
- M.I.T. (Master of Information Technology) - University of the Philippines Los Baños
- LinkedIn: https://www.linkedin.com/in/exequiel-ceasar-navarrete/
- Email: [email protected]