Valentino H.

Demo profile

Backend Developer - APIs & Documentation

Córdoba, Argentina·2+ years·Spanish / English

Bio

I build well-documented APIs that are easy to integrate with. 2 years creating REST services with OpenAPI specs and Postman collections. I believe good documentation is part of the product. Self-taught developer with a writing background. My endpoints are consistent, my error messages are helpful, and my API docs include examples. Growing engineer who values clear communication.

Skills

Node.jsTypeScriptPostgreSQLREST APIsTesting

Work style

Great documentationCalm communicatorDetail-oriented

Portfolio (sample case studies)

Customer Support Ticketing System

Sample

Built full-featured support platform with ticket routing, SLA tracking, canned responses, and customer portal.

TypeScriptPostgreSQL

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

Authentication & Authorization Revamp

Sample

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

Node.jsPostgreSQL

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