Seed stage means you have the funding and a hypothesis. Now you need the product.
Seed funding gives you the runway to build correctly. The seed-stage MVP isn't the pre-seed prototype — it's the product that real customers pay for, that can handle your first 1,000 users without a full rebuild, and that demonstrates product-market fit to a Series A investor. Fixed scope, fixed price. 12 weeks.
You've raised seed funding and need to build the product properly — not a prototype, a production application with paying customers, real data, and the architecture that scales to Series A.
Seed-stage founders often arrive at the product build with a working prototype (built in no-code tools, or by a freelancer, or by a technical co-founder in the evenings) and $500k–$2M of runway. The challenge is transitioning from a prototype to a production product that can support paying customers, withstand investor technical scrutiny, and scale to Series A metrics.
The specific transition requirements from prototype to production: a real multi-tenant architecture (if B2B, each customer's data needs to be isolated — not all customers sharing a single namespace because the prototype was single-tenant); real subscription billing with Stripe Billing (not manual invoicing or PayPal links); real authentication that passes a security review (not a homebrew auth system or a session token stored in localStorage); and a codebase that a hired engineer can productively extend (not a prototype codebase with no tests, no TypeScript, no documentation).
The Series A readiness criterion that affects the seed-stage build decisions: investors at Series A do technical diligence. They'll look at the architecture, the codebase quality, the security posture, and the scalability story. A seed-stage product built on a prototype foundation that can't pass this scrutiny means re-building before or after the Series A close — both expensive outcomes. Building correctly at seed stage is the investment in Series A positioning.
A production seed-stage application — multi-tenant if B2B, subscription billing if SaaS, the core feature set that initial customers pay for, and the architecture that supports the Series A story.
Multi-tenant B2B architecture
Clerk Organisations for tenant management — each customer is a Clerk Organisation, team members are added with role assignments. Postgres row-level security with `organisation_id` on every table that has tenant-scoped data. The API layer that enforces organisation context on every request. The pattern that scales from 10 customers to 1,000 without an architectural rebuild.
Stripe Billing with the full lifecycle
Products, Prices, and Subscriptions. Stripe Checkout for customer acquisition. Stripe Customer Portal for self-service management. Webhook processing for the full subscription lifecycle — creation, plan changes, failed payments, cancellation, and reactivation. MRR tracking in the application database.
Core product feature set
The features that paying customers pay for, built to production standards: type-safe data layer, validated inputs, proper error handling, and the UX that reduces the support overhead of early customer management.
Basic operational tooling
Admin dashboard with customer list, subscription status, usage metrics, and support tools. Not a full-featured admin suite — the minimum that lets a small team manage 100 customers without direct database access.
Architecture documentation
Database schema documentation, API endpoint reference, deployment runbook, and the architectural decision records that explain why key decisions were made. The documentation that makes an in-house hire productive from day one.
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
A production seed-stage application — multi-tenant if B2B, subscription billing if SaaS, the core feature set that initial customers pay for, and the architecture that supports the Series A story.
Three steps, every time.
The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.
Brief & discovery.
We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.
Build & ship.
Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.
Warranty & retainer.
30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.
Why Fixed-Price Matters Here
Seed-stage founders have defined runway. The fixed-price model puts the cost risk on the developer, not on the startup's runway.
Related engagements.
Questions, answered.
Pre-seed MVP: minimum features to validate the hypothesis, built for speed, potentially single-tenant. Seed-stage build: production multi-tenant architecture, subscription billing, feature-complete for the initial customer segment, built for Series A scrutiny. The seed-stage build is bigger, more expensive, and takes longer — because the bar is higher and the consequences of getting it wrong are larger.
Two approaches: rebuild (take the pre-seed prototype as the spec and rebuild from scratch on the correct architecture — cleaner but slower) or refactor (extend the prototype with the correct patterns, leaving the working parts alone and replacing the incorrect architecture incrementally — faster but messier). The right choice depends on how far the prototype's architecture diverges from the production requirements. Evaluated during the specification process.
Authentication architecture (is it secure?), data model (is it multi-tenant? can it scale?), deployment setup (is it production-configured?), code quality (TypeScript? tests? documentation?), and the team's ability to extend the product. A seed-stage product built by RCB Software passes this standard.
Yes — the handoff is designed for this. Architecture documentation, codebase walkthrough, and a clean GitHub history that makes the in-house hire's onboarding straightforward. The technology choices (Next.js, TypeScript, Postgres, Clerk) are the ones the in-house hire will know.
Seed-stage products typically run $35k–$75k depending on the feature set. Fixed-price.
Tell Ryel about your project.
Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.