Gary Coltrane

Front End Engineer at Mansueto Ventures

Owned and evolved core front-end components and UI features supporting 5M+ monthly users across flagship brands including Inc.com and FastCompany.com. Built and maintained scalable page types, templates, and UI features supporting editorial, marketing, and revenue-driving initiatives that contributed to over $4.5M in revenue. Designed and implemented an end-to-end text-to-speech article reader using AWS Polly, driving Discover CTR from ~8.2% baseline to 22.4% on launch—the highest CTR record across an 8-month period. Optimized Core Web Vitals, reducing page payload from 8400 KB to 4200 KB, materially improving site performance and user experience at scale. Introduced and standardized Atomic Design principles, establishing a reusable component architecture across the modern front-end ecosystem, improving team velocity and accelerating product delivery. Partnered with marketing and ad operations teams to implement front-end changes and experiments that supported paid acquisition campai

Full Stack Instructor at Nucamp Bootcamp

Delivered and facilitated recurring weekend workshops using Nucamp’s curriculum, teaching students the MERN stack through hands-on exercises and real-world examples. Reviewed and graded weekly assignments, providing structured technical feedback to support student growth and successful completion of the program. Mentored students 1:1 on code debugging, core engineering concepts, and career development, helping early-career developers build production-ready skills.

Full Stack Developer at Mentor Fish (The Marketing Store)

Built full-stack features for an internal promotional management tool, supporting giveaway operations and internal workflows. Worked alongside engineers and product partners to align on system design and ensure smooth integration with marketing processes. Assisted with deployment, monitoring, and maintenance of production services using AWS, Docker, and Kubernetes.

Engineer II - Full Stack Engineer at Carvana

Built and shipped growth features across a high-traffic web application, delivering full-stack code used by 10M+ monthly users. Developed conversion funnels and A/B tested form variants in a highly optimized Next.js environment. Implemented SEO fundamentals across multiple high-traffic pages, improving indexation, metadata quality, internal linking, and organic search visibility. Collaborated cross-functionally with Product, Design, Marketing, and Analytics to plan experiments, validate metrics, and ship growth-driving features.