Summary
Overview
Work History
Education
Skills
Timeline
SoftwareEngineer

Sebastian Greenholtz

Software Engineer
Chester,VT

Summary

Humanistic software engineer with a passion for design thinking and compassionate communication. 6+ years of experience designing and deploying object-oriented web software, supporting legacy applications, and developing software best practices.

Overview

3
3
years of post-secondary education
4
4
years of professional experience

Work History

Production Support Engineer

Entegral Inc
Madison, WI
07.2019 - 03.2020
  • Led the winning Hackathon team tasked with redesigning the “forgot username and password” workflow based on call center problem statements.
  • Created improved flow using multiple data inputs (email, phone) to recover credentials without needing to call support.
  • Improved login security by adding a second-factor authentication time-based one time passwords to login flow with QR code to seed password generator.

Java Application Developer

Wisconsin Department of Justice
Madison, WI
01.2017 - 07.2019
  • Led the Production Support team de-facto for a year and a half, including training three new production support staff and participating in at least a dozen interviews.
  • Designed and developed both features and green field applications using Spring, Hibernate, Oracle databases, REST and SOAP APIs, and load balancing with Big IP and F5 technology
  • Championed developer-led quality control, including load and integration testing spanning multiple agencies for critical workflows
  • Maintained large law enforcement-serving system including applications more than a decade old with 24/7 uptime requirements.
  • Participated in a major migration effort from applications built in Java versions 5 through 7 up to Java 8, and migrated from Windows 2003 physical in-house servers to Windows 2012 virtual servers to minimize impact from server failure and allow rapid and regular patching.
  • Created documentation for 20 applications, including identifying background jobs and web services previously unknown to the department.

Software Development Intern

Wisconsin Workers Compensation
Madison, WI
07.2016 - 01.2017
  • Participated first in the customer review sessions, then on the development team for a new Accounts Receivable platform to transition the Collections team from Mainframe to a .NET web-based application.
  • Participated in design ideation, scrum effort estimates, code reviews, and debugging sessions, despite having no educational background in .NET technologies.
  • Wrote new code to aid in data transfer from the Mainframe flat files to an Oracle database, and figured out workstation setup to debug data transfer sequence between VB.NET program and Mainframe to identify existing hooks and data structure.

Education

Associate of Applied Science - Web Application Programming

Madison Area Technical College
Madison, WI
09.2013 - 12.2016

Skills

    Java 8

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Timeline

Production Support Engineer

Entegral Inc
07.2019 - 03.2020

Java Application Developer

Wisconsin Department of Justice
01.2017 - 07.2019

Software Development Intern

Wisconsin Workers Compensation
07.2016 - 01.2017

Associate of Applied Science - Web Application Programming

Madison Area Technical College
09.2013 - 12.2016

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Sebastian GreenholtzSoftware Engineer