• Wrote Infrastructure as Code via Python CDK to deploy web services, data pipelines, eventing systems, and other back-end services which used many AWS services such as Lambda, Step Functions, API Gateway, RDS, DynamoDB, SQS, SNS, and EventBridge, among others.• Developed Airflow-based data pipelines in Python to flexibly handle the ingestion, normalization, and warehouse storage of data through a configuration-driven system that allowed internal solutions engineers to configure new data sources without engineering intervention. The system processes all incoming data for the company, driving ingestion for the core data that powers the business.• Designed, led and developed a data delivery system for S3 to SFTP, Azure, or S3 which delivers over 3 Petabytes of data per year at rates over 25Gbps• Designed, led and developed an orchestration system which provides a non-technical user friendly interface for configuring custom workflows using internal systems, scheduling recurring work while automatically handling Daylight Savings Time transitions, and keeping track of workflow runs and their relevant downstream requests.• Designed and developed a rework of a single-process record matching system to use a distributed approach using AWS Lambda and MySQL, including a distributed locking system using Redis to avoid race conditions when multiple processes match against the same name or date of birth.• Served as tech lead for a team of 7 engineers, including system design, planning work and handling cross-team communication.

• Diagnosed performance and scalability issues with a large-scale processing system• Worked as part of a two-man team to rewrite a batch processing system• Improved performance by a factor of 3 utilizing multi-process parallellization• Implemented a worker-queue model that supports horizontal scale out of the processing layer• Oversaw a rewrite of the SQL Server database layer• Provided operational support for a production large-scale processing system

• Development of Android mobile applications• Design and development of Android mobile and front-end web applications using AngularJS 1.4• Discovery and implementation of libraries into existing code to enhance code quality and functionality• Maintenance and expansion of a Symfony 2 back-end system• Participation in collaborative efforts as part of an Agile team• Ensuring code quality through regular code reviews