Johnny Costello
Principal Software Engineer @Lendingclub
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WORK HISTORY
Principal Software Engineer @Lendingclub
San Francisco, CA, US
Principal Engineer Infrastructure Engineer for Data team• Principal Engineer for Migration of Infrastructure from Colo to AWS• Deploy and Develop Data Pipelines for Big Data using Hadoop, Hive, Presto and Spark• Architecture design, build and implementations include: a modular AWS infrastructure for Cloud Data Warehouse using Terraform, Big Data Colo Infrastructure for Hadoop, Cassandra, Elasticsearch, RabbitMQ, Grafana and CI/CD Pipeline using Jenkins.• Software Developments include: Java plugins for authentication authorization, tools for monitoring and managing infrastructure, applications for metrics and monitoring of Big Data Hadoop Stack, applications for deployment of code• Create and maintain applications for Ingestion into Big Data Infrastructure using Hive, Presto, Sqoop, Spark.• Collaborating on the creation and implementation of data encryption in the big data warehouse including a UDF for users to access encrypted data.• Setup and Maintain Real Time Ingestion of Data using Golden Gate.• AWS AMI management using Docker and Ansible• Designed and built ELK stack with mutual TLS support.
EDUCATION
City College of San Francisco
Associate of Science - AS, Computer Science
San Francisco State University
Computer Science, Computers
Foothill College
Associate of Science - AS, Computer Engineering
SKILLS
ABOUT JOHNNY COSTELLO
As an innovative and dynamic software engineer, I bring a solid work history of utilizing the full software development lifecycle to deliver leading-edge technical applications and customized solutions. With an earned reputation for troubleshooting; I am adept at analyzing code, identifying issues and developing/implementing resolutions. In order to remain on top of industry changes and ensure my knowledge and skills stay sharp, I engage in self-study of state-of-the art development tools, new programming languages/methodologies as well as perusing industry news/sites and networking with other professionals. I am proficient with engineering tools including configuration management systems, build processes, debuggers, emulators, simulators, and logic analyzers and have demonstrated a superior ability to identify and document software and business requirements.
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