← All case studies
Summit Wash Holdings logo
Case study · Summit Wash Holdings

Scaling a car wash operator without an internal dev team

A fast-growing car wash owner/operator needed to scale their tech stack cost-effectively, without hiring a single internal software engineer.

Client
Summit Wash Holdings
Engagement
Embedded engineering team
Platform
Web · Data warehouse · Cloud
Days → minutes
Marketing reports and business processes streamlined
One warehouse
Marketing, advertising, finance & payroll data unified
AI churn model
Prediction integrated into CRM for retention

For nearly three years, Zerrtech has been an instrumental part of establishing scalable, data-driven systems at Summit Wash Holdings. Their team has deep technical expertise, but it is their ability to understand and relate to the end user that makes their work exceptional. Beyond executing our vision of owning and understanding our data, they owned and believed in that vision alongside us, which is a kind of magic that can't be found in any tech stack. For anyone dreaming of building something real, Zerrtech is your team.

Marcia Zeller · Enterprise Data Manager
The challenge

Scale the tech stack cost-effectively, with full ownership

Summit Wash Holdings, a fast-growing car wash owner/operator, needed an engineering team that could scale their tech stack in a cost-effective way. We let them bring many outside service providers internally by building software they own, avoiding the thousands of dollars per new location that's common in the car wash space.

We identified processes that could be optimized and designed software and solutions from scratch, all without Summit needing any software engineers on their internal team.

What we built

Software they own, tailored to their business

Streamlined reporting

Marketing reports and business processes that once took days now run in minutes.

Custom data warehouse

Marketing, advertising, finance, and payroll data unified in one place to drive reporting and automations.

AI churn prediction

An AI-powered churn-prediction model integrated into the CRM to enable retention strategies.

Owned infrastructure

Cloud services architected within AWS so the business owns its servers and data outright.

Our role

Identified processes ripe for optimization and designed solutions from scratch.

Built assets tailored to the business instead of the off-the-shelf providers every car wash uses.

Architected a custom data warehouse on AWS Redshift.

Created and integrated an AI churn-prediction model into their CRM.

Technologies used
Frontend / UI
JavaScriptHTMXCSSVite
Backend
PythonDjango
Cloud: Amazon Web Services
RedshiftECS (Docker)Postgres
DevOps
GitLab CI/CDLocalStackAWS CLI
Project management
GitLabSentry
The outcome

A business that owns its software.

Summit Wash Holdings scaled their operations with software built and owned in-house: no per-location service fees, no internal engineering hires required.

Start a project →

Have an idea on a deadline?

We turn ambitious ideas into shipped products, and leave your team able to run them.

Start a project