SaaS / Privacy
DecisionSignal — Anonymous Workplace Signals
Privacy-first anonymous workplace signals. Next.js admin + participant PWA, NestJS Trust Engine on PostgreSQL.
Role
Senior Full-Stack Engineer — Next.js, NestJS, PostgreSQL
Product context
DecisionSignal is a B2B platform for anonymous workplace signals and early-warning analytics. The product includes an admin dashboard, a participant progressive web app (PWA), and a backend Trust Engine API.
My implementation scope
I built the Next.js admin dashboard and participant PWA, alongside the NestJS Trust Engine API on PostgreSQL. The work covered multi-tenant contexts, role-based access control (RBAC), QR entry links, and detection alerts.
Participant workflow
Participants enter through QR links without creating participant accounts. This workflow sits alongside a separate admin dashboard for reviewing workplace signals: participation and administration are different parts of the product.
Administration and access rules
The implementation combines multi-tenant contexts and role-based access control with a NestJS API and PostgreSQL data model. The admin interface includes environments, context analytics, signal distributions, trends, and detection alerts. These are the product workflows covered by my full-stack scope.
What this case demonstrates
This case brings together a Next.js dashboard, a participant PWA, and a NestJS backend. It is relevant to projects that need both user-facing workflows and administrative tools, with tenant contexts and permissions included in the implementation.
Stack
- Next.js
- NestJS
- TypeScript
- PostgreSQL
Screenshots
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