Full-Stack & IoT Developer

Santiago Javier Rotczyn

Full Stack & IoT Developer with experience building scalable SaaS platforms, government workflow systems, secure backend architectures and real-time IoT infrastructures. Strong background in payment gateway integrations, role-based workflow engines, cloud deployments and full lifecycle product development.

Experience

Infostore Solutions Inc.

Full-Stack Developer

Jan 2024 - Present / Barbados / Remote
  • National Immigration, Airport and digital workflow systems.
  • QEH, Ministry of Energy, Security Guards Department and Fire Department.
  • Payment gateway integrations, role-based access, CRUD and workflow engines.

IQ Safe

Founder, Tech Lead, Full-Stack & IoT Developer

Sep 2025 - Present / Remote
  • IoT security suite with firmware and MQTT real-time communication.
  • HiveMQ Cloud, custom Mosquitto server and scalable cloud architecture.
  • End-to-end integration across hardware, backend, cloud and mobile.

CS2 Safe

Founder & Full-Stack Developer

Sep 2025 - Feb 2026 / Remote
  • CS2 Observer with APIs, analytics and scraping.
  • Stack: Next.js, TypeScript, MongoDB and Vercel.
  • 1,033 monthly tracked events and a 76% growth peak.

CivicWire / BNO News

Full Stack Developer, Backend Leader

Jan 2023 - Dec 2023 / Remote
  • MERN social platform development.
  • Backend architecture, scalable REST APIs, middleware and optimization.

Industria4

Full Stack Developer focused on Industry 4.0 and IoT

Jan 2020 - Nov 2022 / Remote
  • Development of Industry 4.0 solutions, connecting software, operational data and enterprise interfaces.
  • Frontend with React and backend integrations with Django, FastAPI and APIs for industrial processes.
  • Dashboards, internal panels, integrations and data visualization for control and decision-making.

Projects

Barbados Government Systems

Government platforms and internal systems with PHP, JavaScript, workflows, roles, CRUD and payment integrations.

Next.jsNode.jsWorkflow

IQ Safe Home

Alarm monitoring, home automation and IoT automation with connected devices, firmware, MQTT, cloud and real-time dashboards.

MQTTHiveMQFirmware

Connected Mobile Experiences

Mobile apps and flows integrated with backend services, authentication, real-time data and IoT or SaaS products.

FlutterREST APIsCloud

CS2 Safe

CS2 Observer platform with API integrations, analytics and scraping. Reached 1,033 monthly tracked events with a 76% growth peak.

Next.jsTypeScriptMongoDB

ConfiApp Paraguay / Avellaneda

Price comparison and marketplace platforms with REST APIs, TypeScript and full-stack architecture.

Next.jsNode.jsMongoDB

CivicWire / BNO News

MERN social platform with backend leadership, scalable API architecture, middleware and performance optimization.

MERNREST APIsBackend

Technical Skills

JavaScriptTypeScriptReactNext.jsNode.jsExpressMySQLMongoDBDjangoFastAPIPHPFlutterDartFirebaseAWSDockerVercelESP32ESP8266MQTTHiveMQMosquittoAPIs RESTGitUI/UXTailwindBootstrap

Education

  • Universidad Nacional de Hurlingham - Technical Degree in Programming (2022-2024)
  • Universidad Tecnologica Nacional - Advanced Testing & Software Applications (2023-2024)

Links

GitHubLinkedInWhatsAppEmailInstagramPortfolio