Agustín R.

Demo profile

Product-minded Engineering Lead

Buenos Aires, Argentina·11+ years·Spanish / English

Bio

I've spent 11 years learning that the best code solves the right problem. I start every project by understanding the business model and user pain points. Former startup CTO, now I prefer working with small teams where I can write code AND shape product decisions. I ship MVPs in weeks, then iterate based on real data. Strong communicator - I translate between business stakeholders and developers fluently.

Skills

TypeScriptReactNext.jsNode.jsPostgreSQLStripeAuthREST APIsTesting

Work style

UX-firstOwns outcomesCalm communicatorPragmaticStraight shooter

Portfolio (sample case studies)

Mobile-first PWA for Food Delivery

Sample

Built progressive web app optimized for mobile with offline support, push notifications, and location tracking.

ReactNext.js

Search & Filter System Optimization

Sample

Rebuilt product search with faceted filtering, autocomplete, and relevance ranking. Improved search speed by 10x using proper indexing.

PostgreSQLNode.js

High-volume Background Job Processor

Sample

Architected reliable job processing system handling 100K+ tasks daily with proper retry logic, dead letter queues, and observability.

Node.js

SaaS Billing & Subscription System

Sample

Designed and implemented complete subscription management with Stripe. Handled proration, dunning, usage tracking, and admin billing tools.

StripeNode.jsPostgreSQL

Authentication & Authorization Revamp

Sample

Rebuilt auth system with SSO, MFA, and granular permissions. Implemented secure session management and audit logging.

AuthNode.jsPostgreSQL