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David User

@daviduser80

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Senior Full-Stack & Applied AI Engineer at PostHog, who developed AI-driven analytics tools serving over 100,000 users.

United States

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At PostHog, I developed and optimized AI-driven analytics tools using Python and PostgreSQL, improving data retrieval efficiency for over 100,000 users. I also contributed to a microservices migration that improved system uptime by 30%.

Previously, I engineered web applications at Endava with Java and Spring, and built full-stack applications at Slalom using Node.js and Angular. I’ve also worked with React, AWS, and automated testing tools including Jest and Cypress.

Experience

Work history, roles, and key accomplishments

Senior Full-Stack & Applied AI Engineer

PostHog

Jan 2023 - Jul 2026 (3 years 6 months)

Developed and optimized AI-driven analytics tools using Python and PostgreSQL, enhancing data retrieval efficiency for over 100,000 users. Spearheaded migration to microservices with Docker and Kubernetes, improving system uptime by 30%.

Python PostgreSQL Docker Kubernetes React NodeJS Jest Cypress Cloudwatch Microservices AI Analytics

Senior Full Stack Engineer

Endava

Jun 2019 - Dec 2022 (3 years 6 months)

Engineered scalable web applications using Java and Spring, improving load times and user engagement. Implemented CI/CD pipeline with Jenkins and Terraform, reducing release times by 25%.

Java Spring Framework React Bootstrap Jenkins Terraform MongoDB Redis Agile Scrum CI CD

Full Stack Engineer

Slalom

Aug 2016 - May 2019 (2 years 9 months)

Architected full-stack applications using Node.js and Angular, delivering features that met complex client requirements. Assisted in cloud transition with AWS, configuring S3 and EC2 to optimize resource utilization.