Open to opportunities

Juan Pablo Losardo

@juanpablolosardo

Message

Senior Frontend Engineer building end-to-end web and AI-native products with React, TypeScript, and Node.js.

Argentina

Message

What I'm looking for

I’m looking for remote-first startups (or top-tier AI orgs) where I can contribute as a Senior Frontend Engineer—building AI-native products with measurable impact, working async and partnering closely with teams across time zones.

I’m a Senior Frontend Engineer with 11+ years building web products end-to-end, with a strong focus on TypeScript/React on the client and Node.js on the server. I’ve spent 7+ years fully remote with US/EU teams, and I’m comfortable working async across time zones.

What I love is shipping clean, efficient, robust code paired with intuitive UI/UX—so users get seamless experiences while we adhere to best practices and industry standards. Recently, I led a Redux to Zustand migration, simplifying data flow, cutting boilerplate, and improving maintainability and development speed.

I also built resilient, latency-free data experiences with TanStack Query and optimistic updates, and tightened correctness with Zod integrated with React Hook Form. Earlier, I designed interconnected remote-processing systems, reduced client computational load by 90% (rendering 2,000+ simultaneous assets), and supported major delivery lifecycles for accounts like Disney and NFL.

Experience

Work history, roles, and key accomplishments

Current

Front End Developer

Current

Super7ui

Mar 2024 - Present (2 years 3 months)

Led a migration from Redux to Zustand, reducing boilerplate and improving maintainability and team development speed. Built a TanStack Query data layer for real-time synchronization with caching and optimistic updates, and implemented Zod + React Hook Form validation for strict media metadata compliance.

React TypeScript Zustand Tanstack Query React Hook Form Zod Data Validation Optimistic Updates

Technical Leader & Engineer

Tekii SRL

Sep 2019 - Feb 2024 (4 years 5 months)

Designed an architecture of interconnected applications to manage assets in a main app and run on-demand renders on remote hosts. Owned Azure DevOps dashboards and CI/CD pipelines, and cut client computational load by 90% while enabling rendering of 2,000+ simultaneous assets.

System Architecture Technical Leadership Azure DevOps CI CD Pipelines Performance Optimization Stakeholder Management

Software Engineer

Tekii SRL

Feb 2017 - Aug 2019 (2 years 6 months)

Architected and delivered the migration of web apps to Electron for native Windows/macOS integration and OS-level communication. Built and maintained Adobe suite extensions with Angular (8/9), RxJS, and NgRx, and refactored legacy AngularJS code to reduce runtime errors and improve stability.

Electron TypeScript Angular RxJS NgRX AngularJS Refactoring

Front End Developer

Quad Minds

Jul 2016 - Jan 2017 (6 months)

Developed responsive, accessible UI using AngularJS and Angular Material with Bootstrap-based grid layouts for cross-device compatibility. Implemented real-time features with WebSockets and Node.js, and supported server-side logic with PHP and MySQL relational data modeling.

AngularJS Angular Material Bootstrap WebSockets Node PHP MySQL Responsive UI Accessibility

Full Stack Developer

West IT

Jun 2014 - Jul 2016 (2 years 1 month)

Contributed to iOS/Android app development across the full lifecycle using Ionic and AngularJS, delivering dynamic and responsive interfaces. Built real-time features with WebSockets and Node.js using Neo4j for graph relationships, and developed REST services in Java with MySQL while contributing to a Citibank Java/Spring project under rigorous standards.

Ionic AngularJS WebSockets Node.Js Development Neo4j Java RESTful APIs MySQL