Ethan Passantino

Full-Stack Engineer who founded AI Guys to lead digital transformation initiatives. I architect and deliver high-quality applications and deep business automation, specialising in leveraging advanced technologies like AI and custom APIs to optimise or transform client workflows.

• Architected and built full-stack applications and bespoke microservices, including serverless functions (AWS Lambda), using React, TypeScript, Node.js (Express.js), Python (FastAPI), and PostgreSQL/MongoDB to solve complex business problems.
• Designed and implemented comprehensive, end-to-end automation strategies that streamlined business processes by combining low-code platforms (e.g., n8n, Make, Zapier) with custom-coded solutions and bespoke API integrations to deliver high-value workflow improvements.
• Managed the entire solution lifecycle, including DevOps (AWS, Docker, CI/CD with GitHub Actions), ensuring scalable infrastructure and secure, long-term deployments.
• Developed and deployed scalable AI Agents and multi-agent systems using frameworks like LangChain and CrewAI, leveraging LLMs (GPT-4, Claude 3, Llama 3) and Vector Databases/RAG.
• Achieved and maintained Expert-Vetted and Top-Rated Plus status on Upwork with a 100% Job Success Score, demonstrating strong technical leadership and dependability with stakeholders, placing me among the top tier of talent on the platform.

Rapidly progressed from Full Stack Engineer to a Team Leading Engineer role at a major consultancy, focusing on the development of enterprise-level AI automation and data processing tools for high-profile corporate clients.

• Led a medium-sized, international engineering team to deliver sophisticated AI automation tools and data processing workflows, driving technical direction and project execution.
• Developed expert-level back-end systems using Python and designed and implemented front-end solutions with React, mastering the full stack for large-scale application development.
• Championed the design and implementation of complex UIs and analytics dashboards, enabling powerful user controls and supporting complex interactions through advanced forms and interfaces.
• Managed AWS Deployment and Infrastructure, ensuring all solutions were scalable, maintainable, and deployed effectively within the client's cloud environment.