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kripto_c

Miguel G

@kripto_c

Full Stack Engineer specialized in Node, React and TypeScript

Venezuela
Spanish, English
About me
Full Stack Engineer with 3+ years building web platforms for companies in Mexico and Argentina: payroll lending, ERPs with electronic invoicing (CFDI), savings funds and multi-tenant SaaS. I build secure Node.js/TypeScript APIs, React dashboards and integrations (payments, e-invoicing, ERPs, e-signature, KYC). I first understand your problem, propose a clear plan and share frequent updates. Clean, documented code so your product can grow. Spanish (native) · English (written).... Read more

Skills

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kripto_c
Miguel G
Offline • 

See my services

Full Stack Web Applications
I will build a secure node js rest API for your web or mobile app
From$45 / projectMore details
API & Integrations
I will integrate cfdi electronic invoicing for mexico with the facturama API
From$80 / projectMore details

Portfolio

Work experience

OpenBusiness

Full Stack Engineer

OpenBusiness

Jun 2026 - Present • 4 mos

Backend and frontend development for a multi-tenant retail SaaS. - ERP integration (Contabilium) through an adapter that resolves the active ERP per tenant - Inventory sync (stock import and export) and B2B order push and cancel to the ERP, with role-based access control - Unified transactional email system with per-tenant branding and delivery traceability - Clean Architecture modules built with TDD, with OpenAPI documentation Stack: Node.js, TypeScript, React, PostgreSQL, Google Cloud Run

Full Stack Developer

Hybrido Studio • Full-time

Mar 2023 - Mar 2026 • 3 yrs

Led frontend and backend development of five fintech, ERP and SaaS platforms (payroll lending, savings funds, factoring, auto-parts ERP, sports SaaS) and the audits module of an operations platform. - Node.js/FeathersJS + MongoDB APIs with dynamic role-based permissions (CASL) and per-company data isolation - KYC (Nufi) and NOM-151 certified digital contracts for payroll-lending and savings-fund platforms, plus loan disbursement via STP - CFDI electronic invoicing with the Facturama API and SAT catalog sync for an auto-parts ERP - E-signature flows with Cincel: expiring signing links, guarantor co-signing and contract PDF generation - Padel tournament engine: round-robin groups, knockout brackets, tiebreakers and automatic phase advancement - React admin panels (Redux Toolkit, Ant Design) for loans, payroll advances, employees and payments Stack: Node.js, FeathersJS, MongoDB, React, Redux, React Native (Expo), Socket.io, AWS S3, Twilio, Docker