Fractional CTO or Tech Advisor

JOB TITLE: Technical Advisor / Fractional CTO (Part-Time MVP Oversight) PROJECT TYPE: Mobile-First Progressive Web App (PWA) – TIME COMMITMENT: ~2 to 3 hours per week (Milestone-based review) DURATION: 4 to 5 Months (Duration of MVP build) COMPENSATION: [Flat Fee Monthly Retainer] ABOUT THE PROJECT We are launching a highly secure, niche online Progressive Web Application (PWA) tailored specifically for medical and healthcare professionals (Doctors, Nurses, EMTs, and Ancillary staff). The core features include a custom schedule/shift-matching query, a hybrid user-verification system (integrating the free US Federal NPI Registry API alongside manual photo badge uploads via Cloudinary), premium tier setups via Stripe Billing webhooks, and third-party chat infrastructure (CometChat/Sendbird). We are hiring an external software development agency to build the MVP. We require an independent, highly skilled Technical Advisor to represent our interests, audit deliverables, and ensure strict code quality. ROLE RESPONSIBILITIES: As our Fractional Technical Advisor, you will act as our "Technical Shield" during the development lifecycle. Your responsibilities will include: Architecture Review: Review the development agency’s proposed database schema (PostgreSQL/MongoDB) and technical architecture blueprint before coding begins to ensure scalability. Milestone Code Auditing: At the conclusion of each project milestone (approx. every 3–4 weeks), log into our private GitHub/GitLab repository to inspect the agency's backend and frontend pull requests for clean documentation, code efficiency, and stability. Vendor Accountability: Attend milestone demo calls alongside the founder to ask technical questions, review functional staging links, and issue a "Pass/Fail" recommendation before milestone payments are released to the agency. Security & Vulnerability Check: Perform a high-level review of data security protocols—specifically ensuring that user-uploaded medical badges, personal identifiers, and Stripe webhooks are completely secure and not exposed via public URLs. REQUIRED QUALIFICATIONS: 5+ years of experience as a Senior Full-Stack Engineer, Technical Lead, or Engineering Manager. Deep production experience building and deploying modern Progressive Web Applications (PWAs). Strong mastery of React/Next.js, Node.js (Express), or Python (FastAPI/Django). Proven experience with third-party API infrastructure drops (specifically Stripe billing pipelines and real-time chat SDKs like Sendbird/Twilio/CometChat). Excellent communication skills and the ability to explain complex technical vulnerabilities or shortcuts to a non-technical founder in simple language. Strict Neutrality Constraint: You cannot be affiliated with or employed by any software development agency bidding on this project. Send resume with expected monthly retainer