Started as a tool for small crews getting dispatched out to job sites — schedule the job, run the clock, track the parts. Each tenant gets its own Postgres schema at a wildcard subdomain, with PII pushed through Vault transit keys so the app server never sees plaintext. NestJS API, Next.js web, BullMQ worker, Capacitor shell that wraps the web build into iOS and Android, all deployed to a single Linode box with one idempotent command and zero containers.
// features
- Per-tenant subdomain routing with schema-per-tenant isolation
- Quotes-to-jobs flow with scheduled start/end and team assignment
- Time entries with clock-in source, daily rollups, and audit trail
- Parts, suppliers, and multi-location inventory with reserved quantities
- Background worker for email, SMS, PDF, and webhooks
- Superuser console to provision tenants and edit any tenant's users
- Single-command idempotent Linode deploy via shell + Ansible, no containers
// interesting details
- Field-level encryption: PII columns are stored as bytea blobs sealed with AES-256-GCM, where each write fetches a fresh data-encryption key from Vault transit and the wrapped DEK is prepended to the ciphertext. Decrypts cache the unwrapped DEK for five minutes, keyed by SHA-256 of the wrapped blob.
- Containerless deploy: ops/deploy.sh + systemd unit files + an nginx wildcard SSL config bring up the whole stack on a single Linode box, with an optional --harden-ssh flag that disables root login and password auth.
- Realtime layer uses Socket.IO with the Redis adapter so the API can run multi-process behind nginx.
- Tenancy lives in the database, not in code: a public schema holds tenants, global_users, and memberships; each tenant gets its own schema (tenant_<tid>) that migrations apply by switching search_path.
// tech stack
TypeScript
Node 22
NestJS 10
Next.js
Capacitor (iOS + Android)
Drizzle ORM
Postgres 16
Redis 7 + BullMQ
Socket.IO
HashiCorp Vault
Tailwind
Ansible / nginx / systemd
Want to collaborate on sendafield?
The repo is private — drop a note and tell us what brought you here.