Andrew Bar

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Senior Software Engineer

IDEXX

Aug 2020 - Current (5 years)

- Designed and implemented a robust two-way messaging platform using React, TypeScript and AWS, enabling seamless communication between pet owners and veterinarians, resulting in a 40% increase in user engagement. - Crafted intuitive user interfaces for the messaging platform using React.js, Redux, and Material-UI, increasing user satisfaction scores by 20%. - Led the migration from a monolithic architecture to a serverless microservices model using AWS API Gateway, DynamoDB, and Step Functions, reducing infrastructure costs by 35%. - Integrated third-party APIs (e.g., Twilio and Firebase Cloud Messaging) to expand communication channels, supporting SMS, email, and app push notifications. - Developed scalable microservices using Node.js, Ty
Software Development Engineer

Amazon

Dec 2013 - Jul 2020 (6 years 8 months)

- Developed and maintained core backend services for Amazon Prime Video's streaming platform using Java and AWS technologies, serving millions of users globally with 99.99% uptime. - Optimized video streaming quality by implementing a data-driven adaptive bitrate (ABR) algorithm, improving user playback experience by 20% on low-bandwidth networks. - Built a recommendation engine feature using collaborative filtering and machine learning models in Python, boosting engagement with personalized watchlists by 25%. - Enhanced the payment integration system, adding support for emerging global payment platforms, which contributed to a 15% increase in international subscriptions. - Worked on video metadata ingestion pipelines that processed million

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