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Aaron Rozanski

Aaron Rozanski

Lead Software Engineer

Lincoln, NE
(402) 616-2654
English

Background


Work Experience

Work Experience

  • Lead Software Engineer, United Health Group

    Feb, 2026 - Present

    Lead a team of engineers designing and maintaining a suite of financial products.

    • Integrated with a new loan servicer for front-book and back-book accounting systems

    • Develop new financial products for new markets and business verticals (Rate-tiered, Custom Limit, Zero Percent)

    • Review and resolve security findings

  • Software Engineer I, United Health Group

    Apr, 2024 - Feb, 20261 year 10 months

    Develop and maintain applications related to patient financing suite. Establish integrations with third-party systems. Lead internal product development for patient financing platform.

    • Develop and maintain various applications related to the patient financing suite of products

    • Establish integration and maintain compatibility with third party systems - Oauth, GDS Link, Socure, LexisNexis, TransUnion, CXOne, Rapid7 etc..

    • Coordinate and lead internal product development for the patient financing platform, and partnering with the other department to analyze needs and integrate solutions

    • Help develop and coordinate addition of low-line/high-line credit underwriting programs

  • Full Stack Application Engineer, Proceed Finance

    Feb, 2022 - Apr, 20253 years 2 months

    Application Engineer for the lending and marketing platforms.

    • Led machine learning endeavors using TensorFlow and Keras.

    • Stack >|> Ruby, NextJS, MySQL, Pulumi, Kubernetes, GCP

    • Tooling >|> Docker, RSpec, Codecept, Sentry, Jira, GitLab, Cypress, Capybara, Capstone

    • Project Leads >|> ACH at Origination, SMS Integrations, Provider On-boarding, marketing email campaigns, new banking & secondary lender integrations, third party underwriting, SmartyStreets

    • Co-Head of company's Machine Learning endeavors. Composing regression and classification models using TensorFlow and Keras

    • ML Stack and Tooling >|> Python, Pandas, Polars, TensorFlow, Keras, Feather (PyArrow)

    • ML Models >|> Neural Network w/ Non-linearities, Random Forest/SVM Classification

  • Infrastructure Program Manager, Nebraska Department of Economic Development

    Jul, 2021 - Feb, 20227 months

    • Oversee implementation of federal funds for CDBG-DR activities relating to 2019 winter storms

    • Administer CCCFF program & ensure turn-back tax revenue generation growth through work with area partners & firms

    • Monitor grant budgets and perform financial audits for expenses pursuant to state law

  • Federal External Review Administrator, Nebraska Department of Insurance

    Apr, 2019 - Jul, 20212 years 3 months

    Led design & implementation for first of its kind external review portal for health insurance appeals.

    • Led design & implementation for first of its kind external review portal for health insurance appeals with IT vendor DataBank

    • Utilized OnBase Enterprise as CMS and performed integrations with APIs

    • Oversaw training for staff to introduce technical knowledge of the DB

    • Managed & implemented service level agreements for the External Review Online Portal and technical assistance

    • Oversee & administer claims through state's External Review process for health/life insurance claims

    • Draft budget & monitor federal grant applications for various State programs

    • Applied CMS compliance measures to attract and secure IT vendors based on overall system strategy

    • Assisted actuarial team with policy and rate analysis for annual rate review filings

  • Intergovernmental Specialist, YoungWilliams, P.C.

    Oct, 2017 - Apr, 20191 year 6 months

    • Assisted attorneys with case management to ensure timely and proper case progression

    • Worked with WISCI reps to address process improvement at local level

    • Implemented procedural changes to enable better communication with sister agencies & other intergovernmental offices

    • Coordinated with out-of-state & international governments/agencies for intergovernmental UIFSA cases

    • Collaborate with state agencies to provide services for clients

    • Ensure interstate payment processing is completed

    • Acted as team lead for incoming cases applicable under URESA law

  • Enforcement Analyst, YoungWilliams, P.C.

    Sep, 2016 - Oct, 20171 year 1 month

    • Coordinated with legal and intake teams to ensure proper enforcement of local support orders

    • Led team each quarter in statistics for number of cases reviewed and successfully enforced

    • Assisted whole team with intergovernmental issues involving orders originating from other states or countries

  • R.M.H.P., Omni Behavioral Health

    May, 2009 - May, 20145 years

    • Extensive training in state medical and therapeutic requirements to provide clients with proper medical care

    • Handle crisis management

  • News Editor, The Manitou Messenger

    Aug, 2007 - May, 20091 year 9 months

    • Configured HTML, CSS and JS for first online versions of The Manitou Messenger

    • Designed and paginated sections using InDesign and Adobe Illustrator

Skills

Skills

  • Languages

    Ruby

    JavaScript

    Python

    C

    SQL

    Elixir

    Rust

    Java/Clojure

  • Frameworks, Libraries & Runtimes

    React/Vue

    Node/Bun

    NextJS

    JVM

    BEAM

    ASP.NET

    TensorFlow/Keras Suite

  • Databases

    MySQL

    PostgreSQL

    SQL Server

    MongoDB

  • DevOps & Cloud

    Docker

    Kubernetes

    GCP

    Azure

    Pulumi

    Jira

    GitLab

    RSpec

    Sentry

    Cypress

    Capybara

  • ML Tools

    TF

    Keras

    NLTK

    NLP

    Pandas

    Polars

    Feather

    PyArrow

  • Testing

    Mocha

    Chai

    Sinon

    Enzyme

    Jest

  • External Tools/Services

    Sentry

    ACH

    Socure

    TransUnion

    Docusign

    Stripe

Education

Education

  • Full Stack Application Development, Associate, SCC

    Jan, 2020 - Dec, 2021

  • Public Management and MIS, Master, University of Nebraska Omaha

    Aug, 2014 - May, 2017

  • Political Science, Bachelor, St. Olaf College

    Sep, 2005 - May, 2009

  • Journalism, Bachelor, St. Olaf College

    Sep, 2005 - May, 2009