As the solo founder, I architected, built, and launched Brospect, a full-stack B2B SaaS platform that helps companies increase sales outreach replies using automated, personalized video. I was responsible for the entire product lifecycle, from translating a core business problem into a complete technical solution. Frontend: Developed a dynamic and responsive user interface using Next.js, TypeScript, and Tailwind CSS, managing complex server state with React Query and client state with Zustand. Backend & Microservices: Engineered the main application's backend logic and REST APIs, alongside a dedicated microservice using Node.js and Express.js to handle scalable video generation. Database & Auth: Integrated Supabase for the PostgreSQL database, secure user authentication, and object storage, ensuring a reliable and secure data infrastructure. Deployment: Deployed the full application using modern platforms, with the Next.js frontend on Vercel and the Express.js microservice on a VPS managed with Coolify.