SaaS engineering that compounds.
Multi-tenant infrastructure, billing that actually nets, and SEO that compounds.
We build B2B SaaS the way it should have been built the first time — multi-tenant from line one, usage-based billing that survives a scale event, retention dashboards your CS team will actually open, and a content engine that ranks for the queries your buyers actually search. The boring stuff is what wins long-term, and we sweat the boring stuff.
Why Sage Ideas for SaaS
What we solve
The specific operational challenges we've already debugged in the SaaS stack.
Tenant data leaks between accounts
A missing WHERE clause in one query, a cached object reused across requests, a shared Redis key without tenant prefix — and suddenly Customer A sees Customer B data. We design row-level security in Postgres, tenant-scoped middleware, and tests that explicitly try to break the boundary.
Billing that does not match what your CRM says
MRR in Stripe diverges from MRR in HubSpot diverges from MRR in your dashboard. We build the metered-events pipeline, reconcile nightly, and instrument proration, plan changes, and refunds as first-class events — not afterthoughts.
Activation funnels with invisible drop-offs
You know top-of-funnel signups but not which step in onboarding loses the most users. We instrument every step, build cohort retention curves, and ship the highest-leverage UX fixes before guessing.
Content stuck on a single blog with no internal linking
You have content, but no programmatic templates for category pages, feature comparisons, or integration directories. Each post is a leaf with no links pointing in. We build the structural SEO layer that makes every new piece of content compound.
Recommended tiers
Productized engagements ordered by relevance to saas workloads.
Relevant work
SaaS questions
How do you implement multi-tenancy in Postgres?
Default to row-level security (RLS) policies enforced at the database, with a per-request connection setting (SET LOCAL app.current_tenant) wrapped in middleware. Application code cannot query without a tenant context — even a forgotten WHERE clause is safe. We add integration tests that explicitly try cross-tenant access and assert they fail. For workloads where RLS is too slow, schema-per-tenant or database-per-tenant are options, with documented tradeoffs around migrations and connection pooling.
How do you handle usage-based billing without melting Stripe?
Buffer and aggregate usage events in your own store first — never call Stripe per event from a hot path. We use a job queue (BullMQ, SQS, or Inngest) to batch usage records to Stripe Meter or Subscription Item Usage Records on a cadence (typically every 1–15 minutes). Reporting is idempotent on a deterministic key, so retries and replays do not double-count. We also reconcile nightly between your event log and Stripe, alerting on drift.
What does retention analytics actually look like?
Three layers. First, a clean event taxonomy — typed event schemas, identify calls on every meaningful auth boundary, and a single source of truth (usually Segment or PostHog). Second, cohort retention curves by signup month and by activation event. Third, reverse-funnels showing which actions in week one predict month-six retention — those become your activation north star.
Can you build programmatic SEO pages without it looking like spam?
Yes — the trick is genuine differentiation per page. Programmatic SEO works when each page has unique data the user is searching for: real comparisons, real pricing, real customer counts, real integration details. We build templates that pull from a structured content source, add unique introductory copy and FAQ schema, and gate publishing behind a quality threshold. Pages that are 90% boilerplate get filtered before they ship.
What stack do you recommend for a new SaaS?
Defaults: Next.js App Router on Vercel, Postgres (Neon or Supabase) with RLS, Clerk or Auth.js for auth, Stripe for billing, Resend for transactional email, PostHog for product analytics, and Inngest or Trigger for background jobs. We will deviate based on team skills — if your team is Rails-fluent, Rails 7 + Hotwire is faster to ship and we will say so. The wrong stack is the one your team cannot maintain after we leave.
Whether it is multi-tenant architecture, billing reconciliation, or compounding content infrastructure — we ship the boring stuff that wins long-term.
Book a 30-minute discovery call. We'll talk through your SaaS stack and tell you directly which engagement — if any — is the right fit.
Book a Discovery Call