# MSA Grid

## Overview

Safety managers need live visibility of gas-detection fleets and the people carrying them. When a detector alarms in a hazardous environment, the data has to arrive reliably and immediately — this is life-critical software, not a dashboard. Customers worldwide run fleets of 300–3,000 detectors each, with the busiest keeping around 1,500 online at once.

## Highlights

• -Build Angular front-ends with NGRX state management and i18next internationalisation for a globally deployed product.
• -Build Node/TypeScript REST APIs backed by PostgreSQL and DynamoDB.
• -Own production AWS serverless infrastructure — Lambda, API Gateway and Step Functions — scaling horizontally with concurrent demand.
• -Ship weekly to production through automated Bitbucket Pipelines and Jenkins pipelines across demo, staging and production environments.
• -Keep ~90% test coverage across unit, integration and end-to-end suites using Jest, Testing Library and Playwright.
• -Added an AI pull-request reviewer to CI that tracks reviewed commit hashes so it only reviews new changes.
• -Halved engineer onboarding from 2 days to 1 by overhauling developer documentation, and have mentored 13+ engineers.