Sebastian Perez Guerra

Senior FullStack Engineer
$38 / hour
July 12, 2003

About Candidate

Senior Full-Stack & AI Engineer with 7+ years of experience designing and developing scalable web applications, AI-powered solutions, and enterprise platforms across fintech, banking, and payment industries. Possesses 5+ years of hands-on experience in Artificial Intelligence, including machine learning model development, LLM integration, AI agent systems, intelligent automation, recommendation engines, predictive analytic, and AI-driven product development. Experienced in AI model training, fine-tuning, data reprocessing, feature engineering, model evaluation, and MLOps workflows to deliver production-ready AI solutions.

Location

Work & Experience

S
Senior FullStack Engineer Jan 2025 - May 2026
Bitly

· Led development of AI-powered analytics features used by 500,000+ users, improving engagement by 28% and increasing feature adoption by 35%..
· Architected and implemented scalable frontend solutions with React and Next.js, ensuring high performance across web and mobile platforms.
· Designed and integrated AI/ML pipelines to analyze link usage patterns, optimize recommendations, and support business intelligence initiatives.
· Mentored junior engineers and conducted code reviews to enforce best practices in frontend architecture and AI model deployment and training..
· Collaborated cross-functionally with product, design, and data teams to define technical strategy and deliver high-impact solutions.
· Drove performance optimization, accessibility improvements, and feature enhancements, resulting in measurable improvements in user experience and system reliability.

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