SG

Full-stack product builder · Remote · Freelance · Full-time

Santiago Gretter

Full-stack / Mobile Developer · Digital products, real-time apps, and web platforms

I design and build end-to-end digital products: mobile apps, web platforms, and scalable backends. I focus on product thinking, UX, performance, and real-time experiences, from concept to production.

Projects

Real projects in production: product focus, performance, and real-time experiences.

RadarSocial — App / main view
Web: Live · Android: Google Play Closed Testing
Licensing

RadarSocial

Full-stack platform with a live web version and an Android app currently in Google Play Closed Testing. It combines social + services experiences in a single product, including chat, maps, BLE, audio, video calls, push notifications, mobile monetization, and a scalable backend.

Next.jsTypeScriptReact NativeNode.jsMongoDBSocket.IOFirebaseAdMobGoogle Play BillingWebRTCBLE
Final Android version currently in Google Play Closed Testing (last validation stage before public release).
Museo Canario website
Web: Live

Museo Canario (Web)

Official bilingual (ES/EN) production website, integrated with a shared Admin panel (also used by the kiosk) to manage content, rooms, and items.

Next.jsTypeScriptTailwindMongoDBCloudinaryCloudflare
Kiosco interactivo
Tablet: Live · Restricted
Adaptable

Interactive Kiosk (Museum)

Tablet-fixed museum experience: interactive floor map, guided tour, 3D pieces (Luma), QR-based self-guide per item, and full content management via Admin panel.

Next.jsTypeScriptTailwindFramer MotionMongoDBCloudinary
Intranet (WordPress) screenshot
Internal · Screenshots only

Intranet (WordPress) — Public agency

Internal intranet (no public access) for communication and operations. End-to-end WordPress implementation: custom UI, social modules, events and knowledge base, plus performance and maintenance.

WordPressPHPHTML/CSSJavaScript
SG SaaS Starter — Main dashboard
Digital Product · Gumroad

SG SaaS Starter

Commercial full-stack starter built for SaaS products. It includes a modern admin dashboard, authentication, users, activity, notifications, settings, a Node.js API backend, and a production-ready structure to extend into real products or new commercial builds.

Next.jsTypeScriptTailwind CSSNode.jsExpressMongoDB
Services Marketplace — main view
Mobile App · In development
White-label / Deployment

Services Marketplace

Current project in development. Full-stack mobile platform connecting clients, providers, and admin in a single workflow: service requests, real-time chat, map, location, push notifications, reviews, history, and admin dashboard.

React NativeTypeScriptNode.jsExpressMongoDBSocket.IOFirebaseGoogle Maps
Demo (coming soon)Repo: PrivateView details
SG Copilot CRM — Main dashboard
SaaS · Live

SG Copilot CRM

Full-stack SaaS CRM focused on sales operations, client follow-up, and AI-powered productivity. It includes authentication, organizations, Stripe subscriptions, Free/Pro/Business plans, usage dashboard, semantic document search, document Q&A, AI client summaries, and a Business-only AI audit/insights module.

Next.jsTypeScriptSupabaseStripeOpenAIVercelTailwind CSSPostgreSQL
DemoRepo: PrivateView details
Business / Licensing

Commercial projects

Digital products developed and available for licensing, partnership, commercial deployment, or acquisition, depending on scope and business model.

In addition to building custom solutions, I also create proprietary products with commercial potential. Some projects in this portfolio can be adapted, licensed, or deployed for third parties under different collaboration models.

Available for licensing
Flagship product

RadarSocial

Full-stack real-time social and services platform. Includes mobile app, web, backend, chat, maps, calls, BLE, monetization, and admin panel. Available for licensing, partnership, or commercial deployment.

Model
License / Partnership / Acquisition
Ideal for
Communities, networking, geolocated services, private social platforms, or hybrid social-services models.
LicensePartnershipAcquisition
Available for licensing / deployment
B2B SaaS

SG Copilot CRM

Full-stack SaaS CRM with AI, subscription billing, plan limits, smart documents, and a Business audit/insights module. Available for licensing, white-label, or commercial deployment for teams, consulting firms, and B2B operations.

Model
License / White-label / Deployment
Ideal for
Sales teams, consulting firms, B2B operations, agencies, or companies needing a CRM + AI + SaaS-ready product.
SaaSLicenseWhite-label
Available on Gumroad / Licensing
Digital Product

SG SaaS Starter

Full-stack starter focused on SaaS and admin dashboards. Available as a digital product on Gumroad and also as an adaptable base for deployments, white-label solutions, or new commercial products.

Model
Digital product / License / White-label
Ideal for
Founders, technical teams, agencies, or developers who need a modern foundation to launch a SaaS product or admin dashboard faster.
GumroadLicenseWhite-label
Available for deployment

Services Marketplace

Mobile solution designed to connect clients, providers, and admin workflows in a single operation. Includes requests, real-time chat, map, history, reviews, and admin dashboard. Available for commercial deployment and vertical adaptation.

Model
Deployment / White-label / Adaptation
Ideal for
Service companies, local verticals, multi-provider operations, or white-label products aimed at end customers.
DeploymentWhite-labelAdaptation
Available for adaptation

Interactive Kiosk / Museum

Interactive system for cultural, educational, or institutional spaces. It can be adapted as an exhibition, consultation, and immersive experience solution for projects with specific content and operational requirements.

Model
Custom project / Partial license
Ideal for
Museums, cultural centers, educational spaces, institutional exhibitions, or interactive installations with curated content.
Custom projectPartial licenseAdaptation

If you are interested in licensing one of these products, implementing it for your organization, or exploring a partnership, feel free to contact me to receive a commercial one-pager, scope proposal, or collaboration option.

Possible models: licensing, deployment, white-label, vertical adaptation, strategic partnership, or acquisition, depending on the project.
Also available for adaptation to other models, sectors, or verticals.

Experience

On-site/contracted experience in public sector and consulting (written generically for confidentiality).

Tech consulting (client in banking sector) · Montevideo, Uruguay

Systems / Functional Analyst · IT Support (On-site)
2013 – 2022
  • Functional/technical point of contact for CRM/ERP modules (Procurement and HR) within the Development area.
  • Direct collaboration with end users and internal bank teams: requirements, tracking and post-production support.
  • Coordination with vendors and stakeholders for analysis, incident resolution and iterative improvements.
  • System integrations and middleware work + automation for daily operational flows (logs, processes, deposits).
  • Automation with Control-M: reduced recurring manual tasks and operational errors.
  • Reporting/BI: business reports and dashboards (SQL/Oracle + Power BI/Excel) integrating sources (banking/CRM/ERP).
  • Operational documents/reports (Java + Oracle + JasperReports) supporting internal processes.
  • Agile delivery (Scrum) and tracking tools (JIRA).
JavaOracleSQLJasperReportsPower BIControl-MCRM/ERPMiddlewareJIRAScrum

Public sector agency (Registry) · Montevideo, Uruguay

Web Design & Development · IT Help Desk Support (On-site)
2023 – 2024
  • On-site IT support for internal users: maintenance, incident handling, and operational assistance.
  • Built and supported internal applications and iterative improvements.
  • Web design & maintenance (HTML/CSS/JS + PHP/WordPress) for internal sites/modules.
  • Reporting and documentation: JasperReports/Jaspersoft Studio for business needs.
  • ERP: Odoo module development and integrations with Oracle database.
JavaJavaScriptOracleJasperReportsOdooWordPressHTML/CSS

Software factory (web projects) · Montevideo, Uruguay

Web Design & Development · Full-Stack Java Developer
2011 – 2013
  • Built web applications with Java (Servlet/JSP) and front-end (JS/CSS/HTML).
  • Implemented solutions using Play Framework and classic Java stack (Hibernate/Maven/Tomcat).
  • Worked iteratively with an agile mindset (Scrum) and dev tooling (Eclipse).
JavaPlay FrameworkServlet/JSPHibernateMavenTomcatMySQL

Skills

Product-driven full-stack profile: web + mobile + backend, with real-time features and production deployments.

Web Frontend

  • Next.js (App Router)
  • React + TypeScript
  • Responsive UI + technical SEO
  • OpenGraph / metadata

Mobile (RadarSocial)

  • React Native (Android)
  • Real-time chat (Socket.IO)
  • Audio/Video calls (WebRTC)
  • Stickers + rich media
  • Maps + geolocation
  • FCM/Notifee (push)
  • IAP (Google Play)

Backend & Infra

  • Node.js / Express
  • JWT auth
  • MongoDB
  • REST APIs
  • Cloudinary / Firebase Storage
  • Deploy: Vercel + Cloudflare

Available

Open to projects and collaborations. If you want to build something solid (web + mobile + backend), reach out.

Open to:WebMobileBackend
Best fit:Real-time appsMapsAdmin/CMS
  • Remote (Uruguay) · Flexible across time zones
  • Product-driven full-stack (UX + performance + real-time)
  • Production experience: deploys, monitoring and iterative improvements
Let’s talkDownload CVTypical response time: 24–48h

Contact

Want to work together? Reach out:

Direct email: gretter88@gmail.com
© 2026 Portfolio · Santiago Gretter