Hyss — AV & Live Events Staffing Platform

The Brief

Staff certified crew, without the chaos.

Event companies need to staff certified freelance crew for live events — with conflict-free scheduling, compliant pay and automated payouts — on web and mobile alike. Hyss handles the whole loop: match, schedule, work, invoice, pay.

Wizard-driven event creation & recurring shifts

Competency-based matching with conflict detection

Freelancer calendars, time-off requests & bidirectional Google / Apple calendar sync

Stripe Connect financial core — payout onboarding, hybrid seat + usage-metered billing, per-invoice checkout links

Architecture & Stack

One codebase, three platforms, end‑to‑end types.

Clients

Next.js 16 webEmployer & freelancer

Capacitor 6iOS + Android, same code

API

Fastify 5 · tRPC 11Prisma → Zod → tRPC types

Services

Stripe ConnectPayouts · metered billing

Calendar syncGoogle + Apple, queued

Data

Prisma 7 · PostgreSQL93 models

SupabaseAuth · storage · realtime

Stack

Frontend

Next.jsReactTypeScriptTailwindCapacitor

Backend

Node.jsFastifytRPCPrismaZodSupabase

Payments

Stripe ConnectStripe Billing

Key Decisions

01Single codebase shipping all three platforms via Capacitor — including a custom native Android Credential Manager plugin

02End-to-end type safety with tRPC + Zod contracts across 93 Prisma models

03Bidirectional Google + Apple (CalDAV) calendar sync — push-channel updates, AES-256-GCM-encrypted OAuth tokens, retryable row-locked job queue

Walkthrough

Employer & freelancer surfaces.

Freelancer App · Mobile

Job offers — confirm / decline

Availability & time off

Confirmed events & invoicing

Employer · Web

Employer dashboard & staffing

Competency-matched crew roster

Events — scheduling pipeline

Reporting & usage tracking

93Data models

~340tRPC procedures

3Platforms · one codebase

Hardened for production with company-enforceable TOTP multi-factor auth, idempotent Stripe webhook reconciliation, and CI running ephemeral-Postgres integration tests plus full-stack Playwright E2E on every pull request.

Staff certified crew, without the chaos.

One codebase, three platforms, end‑to‑end types.

Employer & freelancer surfaces.

Conek — Quotes & Projects Tool for A‑SAFE