SaaS Development Company in San Francisco

What this costs turns on the shape of the work: a focused SF SaaS MVP with auth, multi-tenant data, Stripe billing, one core workflow, and a clean admin console, a YC W24 or W25 pre-seed MVP, or a multi-tenant B2B SaaS aimed at selling into mid-market enterprise. Scope drivers include integration count and compliance scope. We quote fixed price in USD against a signed statement of work, no open T and M. Most YC teams choose to ship the MVP in twelve weeks and reserve a follow-on budget for the SOC 2 and SSO work post-Demo Day.

Every SaaS we build wires Stripe Billing as the source of truth for MRR and ARR, with subscription, expansion, contraction, and churn events streamed to a warehouse (Snowflake or BigQuery) through Fivetran or a custom event pipeline. dbt models compute MRR, ARR, gross retention, net dollar retention, magic number, CAC payback, and Rule of 40 on a daily cadence. Those metrics feed the same dashboard your CFO uses for board decks and the YC quarterly update. We instrument cohort retention by signup month so NDR holds an audit trail, and we expose the underlying event schema so your finance lead can reproduce the numbers in a spreadsheet for diligence.

Yes. SOC 2 Type II readiness is mapped to work packages during discovery, not bolted on six months before an enterprise deal. We implement the access controls, change management, audit logging, vulnerability management, incident response, and vendor management policies the Trust Services Criteria require, run the controls through a real evidence trail in Vanta or Drata, and prep your CISO or compliance lead for the Type I observation window followed by the Type II audit period. For EMEA exposure we extend the same controls toward ISO 27001 alignment. For HIPAA-aligned healthcare SaaS we sign BAAs with AWS or Azure and treat PHI as a separately encrypted data class. PCI DSS scope is minimized by routing card data through Stripe Elements.

For most SF B2B SaaS we default to a shared database with a tenant_id column on every table, PostgreSQL row-level security policies enforcing isolation, and a pool of dedicated schemas for tenants with bespoke residency or data sovereignty needs. Enterprise customers (especially financial services and healthcare) sometimes demand stronger isolation, so we also offer schema-per-tenant and fully isolated stacks in dedicated AWS us-west-2 accounts. Every query is tenant-scoped through the ORM, background jobs carry tenant context, and observability in Datadog and Sentry tags every span with tenant_id so incidents stay contained. Tenant-aware rate limiting on Redis prevents one noisy tenant from degrading the others.

Stripe Billing is our default for SF SaaS because it handles USD subscription pricing, proration, dunning, tax via Stripe Tax, usage-based metering, and seat-based plans without forcing a rewrite when your pricing changes. We model your pricing in Stripe Products and Prices, stream metered events through the Stripe Meters API or a custom usage pipeline, and surface invoice previews inside the admin console so customer success can answer billing questions without filing tickets. For enterprise contracts we wire Stripe Invoicing with net 30 terms, custom MSAs, and order forms generated from a HubSpot or Salesforce CPQ workflow. ACH and wire payments route through Stripe ACH or Modern Treasury for larger deals.

A focused MVP ships in eight to twelve weeks with a team of four: staff engineer, two full-stack engineers, and a designer, meeting on Slack with daily standups at 9 AM PST. A Series A ready multi-tenant SaaS with billing, SSO, admin console, and a first integration takes fourteen to twenty weeks. A full enterprise SaaS with SOC 2 Type II controls, audit logs, role-based access, ISO 27001 alignment, and two or three deep integrations runs five to eight months. We release behind feature flags from week three, so SF founders can put the product in front of design partners on the YC alumni list, peer founders, and target enterprise champions long before general availability.

SF enterprise buyers (the Salesforce, Atlassian, Stripe, Snowflake, and Databricks-adjacent universe) expect SAML 2.0 and OpenID Connect SSO, SCIM 2.0 for user provisioning, and integration with Okta, Microsoft Entra ID, Google Workspace, and JumpCloud out of the gate. We implement this via WorkOS, Auth0, or a native passport.js stack depending on price point. Enterprise tiers also get role-based and attribute-based access control, audit logs exportable to Splunk, Datadog, or a customer-owned S3 bucket, session timeout controls, IP allow-listing, and just-in-time provisioning. SOC 2 Type II readiness follows naturally from the same control set, which is what your first six-figure enterprise contract will gate on.

Most custom SaaS engineering qualifies for the US federal R&D tax credit under IRC Section 41, and California offers a parallel state R&D credit on top. Qualified activities cover novel architecture, technical uncertainty resolution, performance experimentation, and systematic engineering investigation, but not routine bug fixes or pure design work. We deliver contemporaneous engineering logs, technical narratives, and time-tracked records aligned with the Section 174 capitalization rules that took effect in 2022. Your CPA or specialty R&D tax firm (alliantgroup, KBKG, Source Advisors, Neo.Tax) files Form 6765 and California FTB 3523, and our billing records and Linear ticket logs support the claim. Final eligibility sits with your tax advisor and the IRS.