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Resume

Sharon Rosario

CTO, Founding Engineer & Remote US React Developer

Sharon Rosario is a cto, founding engineer & remote us react developer specializing in CTO · Founding Engineer · AI/ML · SaaS Builder. Builds scalable web applications, AI-powered products, and automation systems - from architecture through deployment.

sharon2002222@gmail.comLinkedInGitHub
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Skills & focus

  • Technical Co-Founder
  • CTO
  • Founding Engineer
  • Remote US Software Engineer
  • React
  • Node.js
  • AI SaaS
  • LLM Integration
  • Zero-to-One MVP
  • Full Stack Architecture

Experience

  1. Founding Engineer

    Conch

    November 2025 - June 2026

    • Scaled the product to 2M signed-in users, contributing to product improvement ideas and growth strategies.
    • Built 3-4 core modules from scratch and contributed to the development of all major features across the platform.
    • Led model training for humanization and AI detection of stealth, which serves as a core feature of the product.
    • Engineered proprietary NLP algorithms optimizing text burstiness and perplexity to dynamically bypass advanced AI detection systems.

  2. Founding Engineer

    Ilumiera

    November 2025 - June 2026

    • Driving the technical architecture for the upcoming product launch, building robust core generative features.
    • Developed an advanced podcast generation engine that creates fully customizable audio content from uploaded study materials.
    • Built real-time scanning capabilities, including handwriting-to-text conversion and automatic syncing of handwritten notes from phone cameras to monitor screens.
    • Architected scalable ingestion engines for multi-file processing and indexing, integrating diverse GenAI models (OpenRouter, Gemini, Claude, Grok APIs) and PostHog for telemetry.

  3. Software Engineer (Outsourced)

    Zylitix (via E-Alphabits)

    June 2025 - September 2025

    • CA Automation + AI project - ML-enhanced decision-making in automated systems.
    • Cross-functional integration of AI solutions into existing infrastructure.

  4. Software Engineer

    E-Alphabits

    February 2024 - November 2025

    • Five production projects across front-end, back-end, AWS, and deployment.
    • Ed-tech platform: chat, community, live streaming, and AI in live lectures.
    • Medical platform: patient workflows, assignments, and data visualization reporting.
    • Hotel CRM: role-based access, order management, and analytics dashboards.

  5. Software Developer

    Freelance

    September 2023 - February 2024

    • Flosun - React/TypeScript e-commerce with cart and localStorage.
    • ROSHN-GPT - AI chatbot with SSO and Google Cloud Functions.
    • API design and real-time features with socket programming.

  6. Software Engineer Intern

    NullClass

    July 2023 - August 2023

    • MERN Twitter clone with search, pagination, filters, and email notifications.