Hire Senior Custom SaaS Product Developer in Australia
Scale your engineering velocity with dedicated senior contractor expertise. Specialized in high-performance architectures, sub-100ms API response times, and complete operational alignment with Australia working standards.
Standards & Security Compliance for Australia
Australian Privacy Principles (Privacy Act 1988), APRA CPS 234 information security compliance, and GST/Tax invoice invoicing automation.
Production Architecture Implementation Sample
A concrete, runnable implementation illustrating clean architecture patterns and security best practices.
// Multi-Tenant Isolation Middleware in PostgreSQL + Django
class TenantMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
hostname = request.get_host().split(':')[0]
subdomain = hostname.split('.')[0]
# Resolve tenant context securely
tenant = Tenant.objects.filter(subdomain=subdomain).first()
if not tenant and subdomain not in ['www', 'app']:
return JsonResponse({'error': 'Tenant domain not recognized'}, status=404)
request.tenant = tenant
return self.get_response(request)Domain Bottlenecks We Solve for Australia Organizations
Challenge: Cross-tenant data leakage risks in shared B2B SaaS databases.
Engineered Solution: Row-Level Security (RLS) policies in PostgreSQL enforcing tenant isolation at the database engine layer.
Challenge: Complex subscription tiers, metered usage, and seat upgrades.
Engineered Solution: Stripe Billing webhook state-machine with automatic grace periods, prorated invoice adjustments, and dunning workflows.
Challenge: Slow database indexing on high-growth multi-tenant tables.
Engineered Solution: Composite indexing on (tenant_id, created_at) paired with automated table partitioning for high-volume logs.
Real-Time Cross-Border Settlement & Escrow Engine
Double-entry multi-currency ledger with sub-second balance settlement.
Hire Senior Custom SaaS Product Developer for Your Team
Immediate contractor availability for dedicated retainers or fixed-scope sprints in Australia.