Zac Lanzon · Harrison Township, Michigan
Email · LinkedIn · GitHub
Experience
Rocket Mortgage · Software Engineer
September 2024 – April 2026 · Detroit, Michigan
- Rebuilt a legacy loan-approval service as a .NET API on AWS; reduced the user workflow from approximately 60 to 5 seconds.
- Owned API contracts for more than ten consuming teams, implemented backward-compatibility logic, and coordinated piecemeal consumer migrations.
- Moved underwriting-information consumers to new services and retired the old path.
- Integrated the in-house document service to replace team-maintained, on-premises document webforms.
- Fixed vendor-outage failure paths and helped create a standard outage-response playbook.
- Mentored two engineers and wrote onboarding documentation; both contributed code in their first week.
Production cloud modernization →
Rocket Mortgage · Associate Software Engineer
June 2023 – September 2024
- Built infrastructure-as-code and CI/CD pipelines with blue/green deployments.
- Built an event-driven AWS Lambda/EventBridge service to synchronize legacy and cloud systems.
- Built Dynatrace dashboards with custom OpenTelemetry metrics to track why loans were sold to particular vendors.
Rocket Mortgage · Associate Software Engineer
May 2021 – February 2022
- Implemented MISMO 3.4 loan-data mappings for the platform’s minimum viable product.
- Built a .NET endpoint for per-loan access checks and controlled enablement of the loan-approval pilot.
Public work
Linux / NVIDIA
Submitted changes for Blackwell physical-window allocation and DisplayPort DSC restoration. Published source and regression evidence distinguish tested hardware outcomes from software-model coverage. Both upstream submissions remained open as of September 15, 2026.
Astral Pins
A native GTK4 tool for read-only, per-pin GPU connector telemetry on Linux, using the onboard monitoring chip through SMBus.
Hardware interface and implementation →
Multi-GPU telemetry
A dashboard change that gives each GPU its own readings and graph, with device identities that preserve views through reordering. The public patch includes collector and browser regression coverage; live hardware validation is recorded as pending.
Education
Michigan State University
Bachelor of Science in Computer Science · August 2016 – December 2020