Backend Development for SaaS
Multi-tenant architectures, subscription billing, and APIs that scale. I build the backend infrastructure SaaS products need to grow from launch to enterprise.
Why SaaS Companies choose to work with me
- Multi-tenant architecture expertise (shared and isolated models)
- API-first design for integrations and extensibility
- Experience with subscription billing and usage-based pricing
- Performance optimization for SaaS-scale workloads
- Scalable from 10 to 10,000+ tenants
Unique Backend Challenges for SaaS
SaaS products face backend challenges that typical web apps don't:
- Multi-tenancy: Keeping customer data isolated while sharing infrastructure efficiently.
- Subscription management: Handling plans, billing cycles, upgrades, downgrades, and usage metering.
- API design: Your API isn't just internal - customers and partners will integrate with it.
- Scalability: One large customer shouldn't degrade performance for everyone else.
- Compliance: Data residency, SOC 2, GDPR - enterprise customers demand it.
Multi-Tenant Architecture
I implement multi-tenancy at the right level for your stage:
- Shared database, shared schema: Simplest approach. Tenant ID column on every table. Best for early stage.
- Shared database, separate schemas: Better isolation. Each tenant gets a PostgreSQL schema. Good balance of isolation and efficiency.
- Separate databases: Maximum isolation. Required for compliance-heavy industries. More operational complexity.
Most SaaS products should start with shared schema and migrate to separate schemas as needed. I design the abstraction layer so this migration is straightforward.
Key Services
Multi-Tenant Architecture
Design and implement multi-tenant backends with proper data isolation, tenant-aware queries, and scalable infrastructure.
API Platform Development
Build public-facing APIs with authentication, rate limiting, versioning, and documentation that your customers will love.
Performance & Scaling
Optimize database queries, implement caching strategies, and architect for horizontal scaling as your tenant base grows.
Billing Integration
Integrate Stripe, implement usage metering, manage subscription lifecycle, and handle complex pricing models.
Recommended Tech Stack
Technologies I typically use for SaaS Companies
FastAPI for high-performance APIs, PostgreSQL with schema-level multi-tenancy, Redis for caching and rate limiting, Celery for background jobs (billing, emails, reports), Stripe for payment processing, and Docker + Kubernetes for scalable deployment.
Frequently Asked Questions
Which multi-tenancy approach should I choose?
Start with shared database + shared schema (tenant ID column) for simplicity. Move to schema-per-tenant when you need better isolation or have enterprise customers requiring data separation. Separate databases are only needed for strict compliance requirements.
How do you handle SaaS billing complexity?
I integrate with Stripe for subscription management and build custom usage metering on top. This handles plans, trials, upgrades/downgrades, invoicing, and usage-based pricing. The billing logic lives in your backend with Stripe handling payment processing.
Need expert backend development?
I build scalable Python APIs and backend systems. Let's discuss your project.
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