J Lieberthal is a Senior Backend Engineer based in Denver with 11 years of experience building reliable web platforms and APIs. He transitioned from a finance background (BSBA, University of Denver) into software, bringing strong analytical rigor to designing systems such as a Twilio-powered video chat backend, WebSocket servers, GraphQL/REST APIs, and AWS-backed file and CI/CD pipelines. As a freelancer he delivered full-stack apps, automated infrastructure with Chef/Ansible, and implemented monitoring and testing practices that emphasize production readiness. Currently at Mammoth Media, he focuses on backend architecture and scalable integrations while retaining hands-on expertise in Node.js, TypeScript, Ruby on Rails, and cloud deployments. A less obvious strength is his finance and cybersecurity training, which inform pragmatic, security-conscious engineering decisions and stakeholder collaboration.
11 years of coding experience
7 years of employment as a software developer
BSBA, Finance, BSBA, Finance at University of Denver - Daniels College of Business
BSBA, Finance, General, BSBA, Finance, General at University of Denver
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J Lieberthal - Senior Backend Engineer at Mammoth Media