I’m Andrii Petrusenko, a full stack engineer with 7+ years of experience building and shipping web applications across the JavaScript ecosystem and the AI stack. I combine deep MERN and Express.js expertise with practical AI engineering—turning product needs into working features and reliable backend services for international teams. Across fintech, technology services, and enterprise product engineering, I’ve owned end-to-end delivery: from planning and architecture to CI/CD and deployment, while partnering closely with product, compliance, and stakeholders. In recent roles I’ve delivered AI-focused engineering on Upwork and led automation and AI-driven customer engagement initiatives at Seabank, always with a strong focus on quality, alignment, and measurable outcomes.…I’m Andrii Petrusenko, a full stack engineer with 7+ years of experience building and shipping web applications across the JavaScript ecosystem and the AI stack. I combine deep MERN and Express.js expertise with practical AI engineering—turning product needs into working features and reliable backend services for international teams. Across fintech, technology services, and enterprise product engineering, I’ve owned end-to-end delivery: from planning and architecture to CI/CD and deployment, while partnering closely with product, compliance, and stakeholders. In recent roles I’ve delivered AI-focused engineering on Upwork and led automation and AI-driven customer engagement initiatives at Seabank, always with a strong focus on quality, alignment, and measurable outcomes.WWWW…