Benjamin V.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Technical founder and senior full-stack engineer (15+ years). I build and ship production systems end-to-end: discovery → architecture → implementation → production ownership. For the last 6 years I co-founded and led engineering for Cactus, a multi-tenant restaurant operations SaaS (~2,000 sales transactions/day across ~40 businesses). Hands-on ~30 hrs/week across TypeScript/Node.js services, React/Next.js, Flutter (POS/KDS), Firebase/GCP (Functions, Pub/Sub, Firestore), PostgreSQL, offline-first POS, payments, and integrations. Before that: Order Management Architect / Technical Lead at Vlocity → Salesforce Industries — led OM for a telecom transformation serving ~20M customers (Salesforce + Java microservices on AWS/K8s + Kafka). I work well when the problem is ambiguous: talk to operators, model workflows, ship something that survives production. Stack: TypeScript, Node.js, React, Next.js, Flutter, Firebase/GCP, PostgreSQL, REST, event-driven systems. Also Salesforce Industries / Apex when needed. Timezone: Buenos Aires (UTC-3). English: full professional. Available for part-time or full-time contracts.