Last-Message Delivery App
A messaging app that delivers pre-written content (text, video, documents) to chosen recipients when the user stops checking in, reachable even by recipients who never installed the app. Reliability over arbitrary time windows was the whole product.
Full StackSaaSServices2019–2020
Avocado Technology
Full-Stack Lead
Team 5
Outcomes
- Recipient web view for people who never installed the app
- Led the team through the full build lifecycle
- Multi-channel delivery: push to app users, plus one-time-token SMS/email links to a recipient web view for everyone else
- Architecture owned end-to-end across mobile, web, backend, and AWS
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Overview
From-scratch build of a dead-man's-switch messaging app: sends pre-written personal messages (text, video, documents) to chosen recipients when the user stops checking in. Recipients without the app open the delivery on a web view via a one-time token in the notification, SMS, or email. Led the team through the full lifecycle and owned the architecture end-to-end.
What I owned
- Platform architecture across mobile, web, backend, and infra
- React Native app for iOS and Android
- Recipient-facing web app with one-time-token anonymous access
- Apollo + Express backend on MongoDB, with check-in monitoring and multi-channel delivery pipeline
- AWS provisioning and CircleCI pipelines
Build context
Team composition
2 devs · 1 QA · 1 BA · 1 PM
Type of work