Hiring a "developer" for a SaaS project is like hiring a "lawyer" for a tax case. Technically the categories overlap, but the specifics matter. SaaS work has a small handful of skills that separate someone who's done it before from someone who'll learn on your dollar.
The technical skills that matter
- Multi-tenancy at the database level. Specifically Postgres row-level security or schema-per-tenant. Anyone who answers "we'll filter by tenant_id in the WHERE clause" without mentioning RLS is going to ship a data-leak bug eventually.
- Stripe Billing in practice. Subscriptions, proration, dunning, webhooks, idempotency keys. Theory is easy; the failure modes are what experience looks like.
- RBAC done right. Owner / admin / member roles, invitations, permission inheritance, audit logs. Most generalists implement this naively and it bites at customer ten.
- Auth and SSO. Email/password is the baseline. WorkOS, Auth0, or custom SAML when enterprise customers ask. The "how" matters.
- Observability. Sentry, Datadog, structured logging, tenant-scoped metrics. SaaS without observability is operating blind.
The soft skills that matter more
The technical list is necessary but not sufficient. The skills that decide whether your SaaS ships:
- Scope discipline. Will they cut features, or do everything you ask? You need someone who pushes back.
- Communication cadence. Weekly demos, Friday updates, async-friendly. Not "I'll have it done when it's done."
- Founder empathy. They understand a delayed feature delays your fundraising. They prioritise accordingly.
- Documentation reflex. They write things down, the deploy process, the data model, the why. So that when they leave, you're not stranded.
The best SaaS developer I've worked with talked about scope cuts more often than they talked about features. Every meeting was "what can we drop?" rather than "what can we add?"
How to test for these in a 30-minute call
- "Walk me through how you'd structure tenant isolation in this app." Look for RLS, schema separation, or a clear reason for tenant_id filtering. Look for trade-offs being articulated.
- "What would you cut from this feature list to ship six weeks earlier?" Generalists struggle to answer. SaaS specialists name three things instantly.
- "Tell me about a Stripe integration you've shipped that broke in production." Anyone with real experience has a war story. Anyone who says "they all worked perfectly" hasn't shipped.
- "What's your handover plan if this project ends with me running it?" The answer should be specific: docs, walkthroughs, ownership of the GitHub repo.
The bottom line
SaaS has its own skill profile. Test for the multi-tenancy, billing, and auth experience. Then test harder for the soft skills, scope discipline, communication, documentation. The technical gaps are visible at month one; the soft skill gaps are visible at month four, when it's too late to fix.
If you want three Australian developers who specialise in SaaS, FindDevs gets you those quotes. Free, in 24 hours.