# Matthew Groff

Matthew Groff is a remote worker on Himalayas, Senior Software Engineer at Hologram.io, based in United States.

Source: https://himalayas.app/@matthewgroff

```text
Lead software engineer specializing in data engineering, systems modernization, and team leadership.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | United States |
| Authorized to work in | United States |
| Salary expectations | 150k-200k USD |
| Job categories | Hardware Engineer, Software Architect, Technical Architect, Full Stack Engineer, Front End Developer, Application Developer, Application Engineer, Backend Engineer |
| Skills | Java, Python, Go, JavaScript, TypeScript, ADO.NET, SQLAlchemy, DBT, Angular, WinForms, WPF, Electron, MySQL, Snowflake, PostgreSQL, Git, Gitlab Pipelines, Kubernetes, Kafka, Redshift, C# .NET |
| LinkedIn | https://https://www.linkedin.com/in/matthew-groff-7996a94b/ |

## What I'm looking for

```text
I seek senior engineering roles where I can work on building new platforms, with either a full-stack or hardware focus. I want to be in a position where I can collaborate with and mentor other developers on new solutions.
```

## About

```text
Full-stack software engineer 10+ years experience primarily owning delivery of backend systems in cloud-native environments. I’ve utilized event-driven microservices, scalable data access layers, and various cloud systems (AWS, Azure, GCP) to deliver scalable, performant applications. With a wide breadth of experience in many different languages, I'm able to jump into teams quickly and provide value.

Some of my biggest accomplishments include:

- Modernizing the ui and control platforms on Matrix ‘s .net-based exercise equipment at Johnson health tech to utilize a fraction of the space and memory, resulting in a more responsive and pleasant user experience.

- Reverse Engineering the VA database in mumps to remap the data into a MySQL database at Trinisys utilizing a pipeline focused around an FTP server to allow extraction while staying within compliance.

- Built out the UI and a significant portion of the API and Database for a Claim Adjudication system at Optum (United Health Group), and providing significant contributions out our java processor pipeline to manage claim ingestion. The successes here ultimately leading to promotions to management for that team, and ultimately future management roles.

- Modernization of Flint Hills Resources (Koch) AI/ML Pipelines to deliver better linear regressions in a fraction of the time, with turnarounds going from 6 months to 6-8 weeks.

- Cleanup and Rearchitecting of reporting data pipelines at Hologram from an airflow to redshift pipeline to a more modernized kafka+fivetran to snowflake pipeline that results in more accurate information, consistent data quality, and faster reports.

My interests in the tech tend focus on hardware or full-stack work. While I enjoy technical leadership as a mentor and collaborator, I try to steer away from management roles. For industries, I am most passionate any work that goes into scientific research, space and aeronautics, or biotechnology.
```

## Experience

### Senior Software Engineer (current)

[Hologram.io](https://himalayas.app/companies/hologram). Jan 2024 - Present

```text
Led Redshift-to-Snowflake migration that reduced costs by $100,000/yr and improved report front-end response times up to 75%; rewrote SQL access layers to cut query latency ~20% on average and developed Go libraries and FastAPI services to accelerate data engineering and validation.
```

Skills: Snowflake, SQL, Go, fastAPI, SQLAlchemy, Alembic, Kafka, Datadog, Redshift

### Software Engineering Lead

Flint Hills Resources. Jun 2022 - Feb 2024

```text
Led a team of 6 developers to build data pipelines migrating MSSQL to Neo4j and C3.ai, delivered ML regression models (PyTorch, GluonTS) improving crude availability/demand predictions ~20%, and accelerated ML pipeline delivery from 6 months to under 2 months.
```

Skills: Python, PyTorch, GluonTS, Neo4j, MSSQL, Kafka, JavaScript, Team-Leadership

### Senior Delivery Manager

[Optum](https://himalayas.app/companies/optum). Jun 2018 - Jun 2022

```text
Managed multiple engineering teams (up to 18 people) and delivered a $10M application modernization project that doubled business value from $35M to $70M while overseeing resourcing, budgets, and delivery across teams.
```

Skills: Delivery-Management, Agile, Scrum, Budgeting, Team-Leadership, Stakeholder-Management, Azure, Kubernetes, CI-CD

### Software Developer

Trinisys. Sep 2017 - Jun 2018

```text
Built data transformation applications in Java, JavaScript, and C# to move and normalize data between sources (CSV, XML, HL7 FHIR, MSSQL, MySQL, MUMPS, MongoDB) and reverse-engineered VA MUMPS data into HL7 for Cerner integration.
```

Skills: Java, JavaScript, C++, HL7-FHIR, MUMPS, MSSQL, MySQL, ETL, Data-Integration

### Software Developer III

Johnson Health Tech. Jun 2016 - Aug 2017

```text
Developed and optimized WPF treadmill control systems using C#, JavaScript, and C++, rebuilt language/login/media libraries to reduce data usage ~300 MB and improve performance up to 90%, and implemented automated testing with AutoIT.
```

Skills: C++, WPF, JavaScript, AutoIt, Embedded-Systems, Performance-Optimization

### Software Developer

Epic Systems. Apr 2013 - Apr 2016

```text
Maintained and supported healthcare applications using VB6, WinForms, Cache, C#, and JavaScript, built data processing in MUMPS, and trained developers on standards and best practices across multiple Epic modules.
```

Skills: MUMPS, C++, WinForms, JavaScript, SQL, Crystal-Reports, Healthcare-IT

### Software Developer Intern

Marietta NDT. Jul 2012 - Apr 2013

```text
Developed LabView and C# WinForms front-end control systems for ultrasound scanners and created an Android app to remotely control scanners while learning motor control languages and PLC ladder logic.
```

Skills: C++, WinForms, Android, Embedded-Systems, Motor-Control

### Certified Pharmacy Technician

Target. Jul 2007 - Aug 2012

```text
Worked as a certified pharmacy technician performing medication dispensing and customer service duties across retail pharmacy operations.
```

Skills: Customer-Service, Inventory-Management, Regulatory-Compliance, Retail-Operations

## Education

### Southern Polytechnic State University

Bachelor of Science, Computer Science. Grade: 3.41

```text
Completed a Bachelor’s degree in Computer Science with a GPA of 3.41, focusing on software development and systems.
```

## Tech stack

- Amazon Redshift
- Snowflake
- GitLab
- Kubernetes
- Jenkins
- NumPy
- Pandas
- dbt
- MySQL
- PostgreSQL
- MongoDB
- Gmail
- Node.js
- .NET Core
- .NET
- Neo4j
- Jira
- Java 8
- jQuery
- JavaScript
- Python
- HTML5
- Java
- CSS 3
- Visual Basic
- AutoIt
- XML
- PyTorch
- Kafka
- WCF
- FastAPI
- SQLAlchemy
- Datadog
- TypeScript
- pytest
- JUnit
- Docker
- AngularUI
- Shortcut
- SQL
- TestCafe
- Pydantic
- Refine
- C3 AI

To contact Matthew, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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