Steve.Architect

SaaS Platform Architecture

Designing secure, multi-tenant architectures that scale. I specialize in data isolation strategies (Row-Level Security) and schema design.

Strategic Approach

Building a SaaS is different from building a website. It requires strict data isolation, scalable infrastructure, and complex permission systems. I architect platforms that serve thousands of tenants from a single codebase, ensuring that Client A never sees Client B's data.

Capabilities

Multi-Tenant Database Design (Schema vs. Row Level)
Permission-Based Access Control (PBAC / RBAC)
Subscription & Billing Logic Integration
Scalable Microservices & Monoliths
Data Isolation & Security Compliance
Automated Tenant Onboarding Flows

Engineering Process

1

Domain Modeling

Mapping out complex business rules and tenant relationships before writing a single line of code.

2

Schema Design

Designing normalized databases with strict foreign keys and indexing strategies for multi-tenancy.

3

Security Implementation

Implementing Guards, Interceptors, and Middleware to enforce tenant isolation at the API level.

4

Scalability Testing

Load testing the architecture to ensure it handles concurrent tenant spikes without degradation.

Tools & Technologies
NestJSNode.jsPostgreSQLPrismaDockerAWSRedisKubernetes
Why Me?

Most developers build apps that break when you add the 100th tenant. I build platforms designed to handle the 10,000th tenant from Day 1. My focus on data integrity and isolation ensures your SaaS is enterprise-ready.

Need this expertise?

Let's discuss how I can architect this solution for you.

Steve Arnold Otieno | Full Stack Engineer