Alejandro García Iglesias

Alejandro García Iglesias

Senior Product Engineer

Buenos Aires, Argentina
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Professional Summary

Senior Product Engineer with 19+ years of experience building and evolving web products end to end, combining frontend architecture, full-stack foundations, product thinking, design literacy, and hands-on interface prototyping.

I translate ambiguous business and user needs into practical product and technical solutions, moving between product definition, interface design, implementation, APIs, and system trade-offs.

My strongest work is close to the product: clarifying what to build, shaping the experience, establishing a maintainable technical foundation, and helping teams turn ideas into useful software.

Focus Areas

  • End-to-end product engineering
  • Product discovery, design, and technical definition
  • Frontend architecture and design systems
  • Full-stack foundations, APIs, and integrations

Skills

End-to-End Feature Ownership
Product Discovery
Requirements Definition
Figma & Interface Prototyping
Product & UX Design Collaboration
AI-assisted Design-to-Code Workflows
Full-stack Development
Frontend Architecture
System Design
Design Systems
API Design & Integration
PostgreSQL
Data Modeling
React
TypeScript
JavaScript
Node.js
Technical Leadership
Code Quality & Refactoring

Experience

Full history on LinkedIn →

Independent Product R&D & AI Consulting

Apr 2026 – Present

Senior Product Engineer

  • Worked directly with Juana Casa's two founding partners and studio team on product discovery, clarifying what to build, and translating those needs into an initial React/Next.js AI assistant with Mastra and RAG; I then implemented specialized agents with Hermes Agent and integrated them with Slack and WhatsApp.
  • The knowledge-access problem identified with Juana Casa led me to start developing an independent AI knowledge-intelligence product for companies, with the studio set to serve as its first real-world implementation; I shaped the product direction and experience while building a reusable layer with source-backed RAG and authenticated MCP access to company data.
  • Built and maintain Hermes Dreaming, an open-source Python plugin extending Hermes Agent with scheduled, reviewable memory-consolidation workflows and operational controls.
  • Explored and refined AI-assisted design-to-code workflows across product discovery, interface exploration, prototyping, implementation, testing, and review, using Figma, Pen, and OpenDesign alongside coding agents and agent orchestration, with explicit human verification throughout.

Rotunda Software

Apr 2022 – Apr 2026

Senior Frontend Engineer · Remote

  • Collaborated with backend, design, QA, and marketing to define technical and product solutions, implementing features from Figma designs and proactively identifying UX and implementation improvements.
  • Acted as the main frontend reference across the team, supporting developers in UI-related decisions and implementation.
  • Led the evolution of the internal UI library (ModUI), improving APIs, simplifying styling systems, and increasing consistency.
  • Drove large-scale frontend refactors, including migrations of multiple applications and marketing sites.
  • Built interactive documentation and standardized reusable UI patterns and styling conventions, improving onboarding, consistency, and design-to-development handoff.
  • Worked within a microservices-based architecture using a custom internal frontend framework, implementing Node.js and Express API endpoints to support frontend features.

BairesDev

Mar 2020 – Mar 2022

Senior Frontend Engineer · Remote

  • Worked on Pinterest's Experiments team, implementing and testing React UI variations in the core consumer product to support product experimentation.
  • Developed and owned the UI layer of internal advertising reporting tools, defining their information architecture and data presentation.
  • Expanded into backend responsibilities, learning Go and implementing APIs to deliver features end to end.
  • Collaborated in distributed teams and participated in code reviews and testing.

Mapme

Nov 2016 – Dec 2019

Senior Frontend Engineer · Remote

  • Collaborated closely with the CTO and CEO, translating business needs into practical, user-friendly UI solutions, often without formal designs.
  • Helped evaluate and introduce Vue.js for a full rewrite of a Mapbox GL map-based product, then led the frontend implementation of the redesigned application from scratch.
  • Built a component-based architecture with Vue and Vuex, including reusable UI components designed for maintainability and scalability.

Deviget

Dec 2013 – Apr 2016

Frontend Developer · Remote

  • Worked on a large-scale advertising platform (AppNexus).
  • Built modular UI components using AngularJS with strong testing practices.
  • Contributed to frontend structure improvements and CSS organization.
  • Participated in Style Guide development.
  • Collaborated in distributed cross-functional teams.
  • After AppNexus, built a React-based administration UI for corporate security policies for another client engagement.

Vulsai

2012 – 2013

Frontend Developer · Buenos Aires, AR

  • Primary frontend developer across multiple projects.
  • Introduced modern CSS tooling (Sass, Less, Compass), improving maintainability and structure of styles.
  • Built data visualization interfaces using D3.js.
  • Developed self-contained embeddable widgets.
  • Collaborated closely with design.

Earlier full-stack experience across four roles building web applications end-to-end with frontend, backend, APIs, databases, and infrastructure.