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EnzRossi

SaaS

Engineering for products that need to ship and scale.

Multi-tenant architecture, billing systems, API infrastructure, and growth tooling: built by engineers who've worked inside SaaS products, not just around them.

Where SaaS engineering slows down

SaaS has its own set of hard problems.

Multi-tenancy is harder than it looks

Data isolation, per-tenant configuration, and row-level security need to be in the architecture from day one. Retrofitting them into a single-tenant system is painful and risky.

Billing systems accumulate technical debt fast

Usage metering, proration, dunning, invoice generation, and plan change logic start simple and get complicated immediately. Most teams underinvest here early and pay for it later.

Instrumentation is infrastructure

Product analytics, feature flags, A/B testing, and error monitoring aren't add-ons: they're how you make decisions. Engineers who treat observability as optional slow down entire product teams.

APIs are products too

For developer-facing SaaS, your API is your product. Versioning, documentation, rate limiting, and SDKs aren't afterthoughts: they're the difference between adoption and churn.

What we build

The specific work SaaS teams ask us for.

5 use cases

Multi-tenant architecture

Schema-per-tenant, row-level security, and shared infrastructure with strong isolation. Engineers who've designed and migrated multi-tenant systems.

Billing and subscription systems

Stripe, Chargebee, and Recurly integrations. Usage metering, plan management, proration logic, and dunning flows: built to handle the edge cases.

API design and developer tooling

RESTful and GraphQL APIs, webhooks, SDK development, and developer documentation. Engineers who think about API ergonomics and versioning strategy.

AI in this industry

Most SaaS products are now shipping AI features: copilots, smart suggestions, automated workflows, and natural language interfaces. Our engineers building in this space understand the infrastructure requirements beyond the LLM call: retrieval systems, context management, streaming responses, and the cost/latency tradeoffs that matter at scale.

Common tech stack

What SaaS engineering teams typically build with.

ReactReact
Next.jsNext.js
TypeScriptTypeScript
GraphQLGraphQL
REST
tRPCtRPC
Tailwind CSSTailwind CSS
Node.jsNode.js
PythonPython
GoGo
PostgreSQLPostgreSQL
RedisRedis
KafkaKafka
ElasticsearchElasticsearch
AWSAWS
GCPGCP
TerraformTerraform
KubernetesKubernetes
Stripe
LaunchDarkly
DatadogDatadog
Segment

FAQ

Common questions

SaaS scales fast when the foundations are right.

We'll staff engineers who've built those foundations before.