Jeff Baranski

jeff.baranski@outlook.com | Washington, D.C. | https://www.jeffbaranski.com

Summary

Curious and motivated Engineering Manager with a proven track record of delivering highly available, scalable, and performant software responsible for serving millions of customers daily.

Experience

Capital One 03/2021-Present - Manager, Lead Software Engineer

• Manage a team of software engineers developing mission critical high transaction per second low latency web services: Define and plan product roadmap, coach and mentor direct reports, recruit and build team.
• Architect and implement enhancement that eliminates redundant downstream API calls by sourcing data from the database directly: Improved API response times by ~35%, from ~20 ms to ~13 ms. Led to ~70% decrease in requests to the downstream API, from ~2.7 billion daily requests to ~834 million daily requests, resulting in ~$87,000 annual infrastructure cost savings.
• Architect and implement big data batch process that determines which customers to target for in app messaging related to their account data sharing activities with 3rd parties: Send notifications to ~3 million customers every day. Recognized with quarterly “relentless commitment to excellence” award in Q2 of 2022 for my contributions leading this project.
• Technologies used: Java, Spring Boot, Python, PySpark, Hadoop, SQL, AWS: Lambda, ECS, EMR.

Verisign 03/2020-03/2021 (1 year) - Software Engineer

• Authentication web services for domain name registrars: Java, Spring, PostgreSQL, MongoDB, Ansible, OpenCloud.

Knexus Research Corporation 01/2019-03/2020 (1 year 2 months) - Senior Software Engineer

• AI search web services and GIS UI for a DoD (Department of Defense) customer: Java, Python, TypeScript, Angular, OpenStreetMap.

Infor 02/2009-12/2019 (9 years 10 months) - Senior Software Engineer

• Managed a team of six onsite and offshore developers, which included regular travel to Hyderabad, India for face to face co-working and training.
• Rewrote large, complex, and buggy Ant based legacy build process with Gradle. Led to 70% faster builds, from 2.5 hours to 45 minutes.
• Implemented client certificate authentication (PIV/CAC card login) for Department of Defense (DoD) customers. Maintain existing authentication mechanisms (SAML based SSO, LDAP SSO, internal username/password).
• Architect, configure, and administer modern CI/CD build flow. Includes self hosted Maven repository (Nexus Repository Manager), self hosted docker container registry (Nexus Repository Manager), self hosted Jenkins server.
• Part of a 4 person architecture team that ported legacy product UI to Ext JS for multiple browser support (1500+ screens and tab views).
• Architect and implement horizontal server auto scaling when application running in AWS. Led to ~$1,000,000 annual savings on AWS server costs.

Education

• MS in Computer Science 08/2022: Vanderbilt University (Grade: 4.0/4.0)
• BS in Computer Science 12/2008: University of South Carolina (Upstate)

Licenses & certifications

• AWS Knowledge: Serverless 07/2023
• AWS Certified Solutions Architect - Associate 12/2021-12/2024
• Department of Defense (DoD) secret security clearance 01/2019-03/2020

Volunteer

• Capital One Mentor junior software engineers.
• CodePath Mentor university computer science students.