A multi-tenant food safety, compliance and operations SaaS for multi-outlet businesses — digital checklists, audits, asset tracking and IoT temperature monitoring.
The problem
Food safety compliance is evidence, not intent: an outlet has to show that the fridge was checked, by whom, and what it read. Every tenant in the platform shares a single database, which makes isolation a property of the queries rather than of the infrastructure.
Holisto Systems' public website. The multi-tenant platform behind it is private.
Built for
Holisto Systems
Role
Senior Full Stack Engineer (Independent Contractor)
Scale
Multi-tenant on a single database
Live IoT temperature feeds
KPI reporting · PDF and Excel exports
AWS with CloudWatch
Period
Dec 2025 — Jul 2026
Stack
React Router 7
Node.js
MySQL
Prisma
AWS
CloudWatch
Status
Client platform, no public link.
What I built
Added enterprise features to the platform, where every tenant shares one database: React with React Router 7, Node.js, and MySQL through Prisma, on AWS with CloudWatch monitoring.
Wrote the REST APIs and backend services behind digital checklists, audits, task management and equipment/asset tracking.
Handled the IoT side, pulling live temperature readings off connected equipment into the platform.
Put together the analytics side: KPI reporting, compliance insights, task-completion tracking, and PDF and Excel exports across outlets.
Cleared legacy bugs across the existing codebase while shipping new features on top of it.
Sat with stakeholders to turn operational and regulatory requirements into something buildable, using Claude, ChatGPT, Copilot and Cursor throughout.
