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Juan Merma
Looking for a jobFounder & Lead Engineer
Senior full-stack engineer at ZentryxApp building a production SaaS ERP and AI legal assistant.
PeruFounder & Lead Engineer at ZentryxApp
Experience
Founder & Lead Engineer
Founded and led a multi-tenant SaaS ERP in production with paying customers, including SUNAT e-invoicing, accounting, inventory, POS, and Stripe billing. Built an AI legal assistant with RAG over Peruvian legal codes and an OCR-LLM pipeline for supplier invoices.
NestJSTypeScriptPostgreSQLStripeSUNAT E InvoicingUBL 2.1 XMLLLMRAGClaudeOpenRouterGROQOCRDockerRailwayExpoReact Native
General Manager & Systems Lead
Run the family IT retail and services company, overseeing internal systems, network and CCTV projects, and client delivery. Previously worked part-time as a systems analyst from 2009 to 2020, providing hardware/software support, websites, e-invoicing systems, and ERPs.
IT ManagementSystems AnalysisNetworkingCCTVe invoicingERPHardware SupportSoftware support
Software Developer
Built business systems for local companies using C#/.NET and ASP.NET on SQL Server, including data modeling, transactional workflows, and reporting. Developed multi-branch desktop ERPs with over 100 WinForms screens, plus Java services and freelance systems for clients across Peru.
C#.NETASP.NETSQL ServerWinFormsJavaData ModelingReportingERP
Education
Universidad Privada de Tacna
Pursued a degree in Systems Engineering, completing coursework from 2009 to 2014.
Pursued a degree in Systems Engineering, completing coursework from 2009 to 2014.