J

Juan Montero

About

Detail

Full-stack software engineer with over 15 years of experience developing scalable SaaS platforms and mobile applications. FinTech, blockchain, Health
Arequipa, Peru
Contact Juan regarding: 
Flexible work
Starting at USD45/hour

Timeline

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Résumé

Jobs verified_user 0% verified
  • A
    Senior Full-Stack Engineer & SaaS Architect
    Apps & Webs Studio
    Jan 2018 - Current (8 years 6 months)
    • Multi-Tenant Infrastructure: Architected, built, and shipped 9+ cloud-native, multi-tenant SaaS platforms featuring complete organization-level data isolation, secure data segregation, and automated white-label custom subdomain routing. • Database Engineering & RLS: Designed production-grade PostgreSQL schemas on Supabase, enforcing complex backend tenant isolation via custom Row-Level Security (RLS) policies tightly coupled with auth.users contexts. • Cross-Platform Mobile Systems: Formulated and developed native-performing mobile applications using Flutter and Dart, orchestrating local caching, state management architectures, and cross-platform publishing constraints. • Global Payment Gateways: Integrated advanced Stripe, Stripe Connect
  • I
    Senior Full-Stack Developer
    Independent Software Consultant
    Jan 2009 - Jan 2018 (9 years 1 month)
    • Developed and deployed dozens of scalable web interfaces (React/Next.js) and secure mobile database architectures for global clients across retail, logistics, and healthcare industries. • Executed data migrations transforming old single-tenant legacy infrastructure into optimized, highly transactional relational schemas, boosting API performance metrics and indexing efficiency. • Managed complete DevOps delivery pipelines using Git/GitHub, automated CI/CD workflows, and serverless edge hosting environments (Vercel, Railway).
Education verified_user 0% verified
  • Florida International University
    Bachelor of Science in Computer Engineering (BSCpE)
    Florida International University
    Mar 1993 - Sep 1997 (4 years 7 months)
    Focus Areas: Distributed Systems, Relational Database Frameworks, Advanced Software Engineering.
Projects (professional or personal) verified_user 0% verified
  • S
    WazMeUp — WhatsApp Automation & E-Commerce Pipeline SaaS
    Solo Project
    May 2026 - Current (2 months)
    • Execution: Created an automated sales pipeline utilizing Meta’s WhatsApp Cloud API. Programmed real-time conversational event parsing via LLM intent evaluation to automate CRM tag updates and trigger instant order routing. • Stack: React, Node.js, Meta Cloud API, Supabase, PostgreSQL, Stripe.
  • S
    TerraVox & TeleSwitch — Multi-Tenant AI Voice Receptionist SaaS
    Solo Project
    Mar 2026 - Apr 2026 (2 months)
    • Execution: Built SaaS systems that empower businesses to deploy autonomous AI phone agents. Configured live tool calls linking telephony engines (Vapi, Retell AI, Twilio) with ElevenLabs voice synthesis and real-time Google Calendar availability checks. • Stack: Next.js, React, TypeScript, Supabase, n8n Automation Engine, OpenAI/Claude APIs.
  • S
    Enlistify — Multi-Tenant AI Recruitment SaaS
    Solo Project
    Feb 2026 - Mar 2026 (2 months)
    • Execution: Solo Architect & Developer. Engineered an enterprise-grade Applicant Tracking System (ATS) backed by a 5-role RBAC system and strict PostgreSQL RLS multi-tenancy configurations for organization data isolation. • Stack: React 18, TypeScript, Vite, Tailwind CSS, Supabase, Vercel.
  • S
    Global & Regional Payment Hub Demos
    Solo Project
    Jan 2026
    • Execution: Constructed multiple production-ready secure checkout proofs-of-concept covering global pipelines (Stripe, PayPal) and regional integrations (Niubiz for Peru, PixelPay for Central America, KNet for Middle East, PayQora for India).
  • S
    EthEnergy & TRON Energy — Distributed Ledger Protocols
    Solo Project
    Jan 2026
    • Execution: Developed decentralized energy delegation applications featuring smart contract interactions, transaction validation state monitoring, and direct Web3 wallet browser connectivity injections (MetaMask, TronLink).
  • S
    SleepyAI — Advanced AI-Driven Behavioral Health Mobile App
    Solo Project
    Nov 2025 - Dec 2025 (2 months)
    • Execution: Solo Mobile Developer. Engineering a cross-platform mobile tracking application focused on sleep diagnostics and optimization. Designed a sleek, high-end dark UI ecosystem handling rich telemetry visualizations, offline-first data synchronization, local notifications, and custom prompt workflows for behavioral AI health metrics. • Stack: Flutter, Dart, Local Storage, OpenAI API, Supabase, PostgreSQL.
  • E
    Equity Partners — PropTech Investment SaaS Engine
    Oct 2025 - Nov 2025 (2 months)
    • Execution: Designed and engineered a data-dense private equity fund marketplace. Modeled deep database schemas mapping complex investment statuses (Draft, Funding, Operating, Exited), tracking distributions, and driving automated email tracking engines via webhooks. • Stack: React, TypeScript, Supabase, PostgreSQL, Tailwind CSS, Vercel.