J

Johnnie Owen

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Florida, United States

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Jobs verified_user 0% verified
  • Twitter
    STAFF SOFTWARE ENGINEER
    Twitter
    Jan 2019 - Current (7 years 3 months)
    Led architecture and migration oftheTwitterAds Campaign Budgeting System from a Ruby on Rails monolithtoa Java Spring Boot and Go-based microservicesarchitecture, reducing latencies by40% and improving system scalability. Decomposed core components such as budget enforcement and spend tracking into RESTful services using Spring Boot and Node.js, deployed with Docker on AWS ECS, and coordinated via gRPC and Kafka. Designed a zero-downtime migration strategy using dual-write and shadow-read patterns, ensuring high availability during peak advertiser traffic and real-time spend tracking. Built full-stackobservability and monitoring tools with OpenTelemetry, Datadog, and AWS CloudWatch, enabling deep visibility into service health and performan
  • Omada Health
    SOFTWARE ENGINEER
    Omada Health
    Jun 2010 - Dec 2018 (8 years 7 months)
    Developed and maintained a patient-facing and clinician-facing healthcare platform using React and Node.js, integrating RESTful APIs to streamline patient data access. Designed scalable microservices with Go and AWS Lambda, leveraging DynamoDB for efficient data storage, improving system throughput by 25% in a fast-paced healthcare environment. Implemented responsive front-end interfaces with TypeScript and Tailwind CSS, enhancing user experience for mobile and web applications, increasing patient engagement by 20%. Conducted unit and integration testing using Jest and Mocha, achieving 95% test coverage and reducing production bugs by 40% for critical healthcare features. Optimized database performance with PostgreSQL and AWS RDS, implement
Education verified_user 0% verified
  • the university of oklahoma
    Bachelor'sDegreeinComputerScience
    the university of oklahoma
    Jan 2005 - Jan 2010 (5 years 1 month)