Jeff Baranski
jeff.baranski@outlook.com | Washington, D.C. | https://www.jeffbaranski.com
Summary
Curious and motivated Engineering Manager with ~15 years industry experience who holds a bachelor’s and master’s degree in Computer Science.
Proven track record of delivering highly available, scalable, and performant software with millions of daily active users. Excellent programming and software design skills, including debugging, performance analysis, and test design for large-scale cloud based distributed systems.
Ability to provide technical leadership on high-impact projects. Manage and own project priorities, deadlines, and deliverables from short-term critical feature launches to long-term research initiatives. Comfortable coaching, developing, and motivating a distributed team of engineers in a manager and/or mentor role.
Experience
Capital One 03/2021-02/2024, 09/2024-Present - Manager, Lead Software Engineer
- Manage a team of software engineers developing mission critical high transaction per second low latency web services (~10k TPS and ~5ms response times). Every Capital One line of business uses our APIs as the source of truth for customer account information: 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 ~75%, from ~20 ms to ~5 ms. Led to ~85% decrease in requests to downstream APIs, from ~2.7 billion daily requests to ~405 million daily requests. Resulted in ~65% decrease in annual infrastructure costs, from ~$1 million to ~$350k.
- 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 daily. Recognized with quarterly “relentless commitment to excellence” award in Q2 of 2022 for my contributions leading this project from ideation to production release.
- Technologies used: Java, Spring Boot, Python, PySpark, Hadoop, SQL, AWS (Lambda, ECS, EMR, S3).
CrowdStrike 02/2024-08/2024 (6 months) - Senior Engineer
- Log ingest and real time alerting engine at daily multi-petabyte scale: Scala, Kafka, AWS (CloudTrail, SQS, S3).
Verisign 03/2020-03/2021 (1 year) - Software Engineer III
- Authentication web services for domain name registrars: Java, Spring, PostgreSQL, MongoDB, Ansible, OpenCloud.
Knexus Research Corporation 01/2019-03/2020 (1 year 3 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 11 months) - Senior Software Engineer
- Managed a team of six onsite and offshore developers, which included regular travel to Hyderabad, India for face to face coaching 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 on AWS EC2. Led to ~$1 million annual savings on infrastructure 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