From prototype to a production-ready SaaS product — with a launch website that actually converts.
We scope MVPs honestly and build the launch website and the platform as one coherent product: auth, billing-ready structure, roles, data model, APIs, telemetry and experiments. No boilerplate soup, no demo magic — a foundation that launches in month one and still carries weight in month eighteen.
- MVP scoping · launch website · SaaS architecture · billing-ready
- Telemetry, feature flags and experiments wired in from day one
- Direct with the founder · based in Krefeld · DACH, EU & global
Why early SaaS teams and founders work with p24.co.
Startups burn months when the first build is a wish list instead of an MVP, when the launch website is a pitch deck rendered as HTML, and when the platform breaks on the first serious customer because auth, roles and billing were never thought through. p24.co works differently: we scope the first real slice of value sharply, build the website as an honest conversion channel and the platform on a production-grade foundation. The result: products that ship in weeks and can actually be sold, billed and iterated on — without a reset three months in.
Who we typically work with.
Our focus is founder-led teams in pre-seed, seed and early Series A, where the first technical decisions shape the next two years — typically 1–15 people, a clear vertical and a real customer pipeline.
First-time founders without a CTO
Domain experts with a clear vision and first customers who lack a technical partner to drive MVP, launch website and architecture end-to-end. We take technical ownership until an internal team is built — and plan the handover from day one.
Technical founders who need hands
Technical co-founders who don’t want to wedge architecture, auth, billing or the launch website on top of their actual product work. We deliver the unsexy but critical foundation and frontend so the technical founder can focus on the product itself.
Vertical SaaS and B2B tools for DACH and EU markets
SaaS products for mid-market, consulting, e-commerce, industry or regulated verticals, with real requirements around GDPR, EU hosting, invoicing, tax and multilingual interfaces. Clean architecture matters more here than the next design-trend wave.
Spin-offs and innovation projects from established companies
Corporate spin-offs or innovation units that need to ship at startup speed without enterprise IT drag — but with the compliance, data protection and audit requirements the parent organisation expects. We bridge both worlds.
Typical early-stage bottlenecks — and the levers we use.
We see these six bottlenecks in nearly every first conversation with early SaaS teams. For each one there is a clearly defined path that ships in weeks, not quarters.
MVP scope is a wish list, not a first honest value proposition
Three personas, fifteen features, nine integrations, "all needed for launch". We compress the scope to the first real value slice — the one path a paying first customer actually needs. Everything else lands on a reasoned backlog, not in the bin and not in sprint one.
The launch website is a pitch deck rendered as HTML
Six hero sections, no clear promise, no honest price, no working sign-up. We build the launch website as a real conversion channel: a single promise, clear audiences, an honest product view, transparent pricing, a clean funnel to sign-up or demo, analytics from day one.
The platform foundation is boilerplate without architectural decisions
Auth lifted from a template, data model "grown organically", multi-tenancy "later", billing "once we have revenue". We make the unsexy decisions explicitly up front: auth strategy, tenancy model, roles, data model, API shape, billing-ready structure — even if billing only goes live in month four.
No telemetry — nobody knows what is actually happening
Activation and conversion funnels live in gut feel, customers report bugs first, no one knows which features are used. We wire in product telemetry, error tracking, logs, feature flags and a lean experimentation frame from the start — so decisions rest on data, not on volume in standup.
Technical debt grows faster than the product
Copy-paste components, magic strings, no type system, "we’ll refactor later". We leave behind a maintainable foundation: clear domain model, TypeScript, defined boundaries between website, app and API, automated tests where they matter, CI/CD, code reviews. Speed comes from clarity, not shortcuts.
Scale fails at the first serious customer
The first enterprise customer asks for SSO, audit log, DPA, EU hosting, invoice instead of card, multilingual UI — and the product says no to all of them because the foundation can’t carry it. We design for this from day one: not everything gets built, but everything stays structurally possible.
Scope for Startups & SaaS.
You can book individual blocks — MVP scoping, launch website, SaaS architecture, billing integration, telemetry setup — or a coordinated stack from idea to first paying customer. Recommendations follow a short discovery, not a catalogue.
MVP scoping and prioritisation
Honest discovery into market, audience, value proposition and realistic competition. We compress the scope to the first value slice, make hypotheses explicit (what we believe, what we want to measure), prioritise by value and risk, and produce a reasoned backlog — without "nice to have" romance.
Launch website and marketing site
A website that makes one clear promise, addresses the right audiences, shows the product honestly, surfaces pricing transparently and delivers a clean funnel to sign-up, demo or waitlist. Built with Next.js, with clean SEO architecture, real-device performance, multilingual support, blog/changelog structure and analytics from day one.
App and platform pairing
Website and product app live in one coherent system: shared design system, shared auth, shared tokens, consistent domain language. The transition from marketing → sign-up → onboarding → first value moment is designed as one flow, not two parallel worlds.
SaaS architecture: auth, tenancy, roles, data model
Auth strategy (password, magic link, SSO path, Google/Microsoft via Clerk, Auth.js, Supabase, Cognito or in-house), tenancy model (single- vs. multi-tenant, row-level security, schema separation), roles and permissions, clean relational data model (PostgreSQL), migrations, seed data.
Billing-ready structure and payment integration
Product and pricing model structured so Stripe, Paddle or Lemon Squeezy can be wired in without a rewrite: subscription tiers, usage components, trials, coupons, dunning, tax (EU OSS, VAT, reverse-charge), invoicing, accounting export. Even when the live switch comes after the first pilot customers.
APIs, integrations and webhooks
REST or tRPC/GraphQL APIs with clear schemas, versioning, auth, rate limits. Webhooks with idempotency and retries. Integrations to Stripe, Slack, HubSpot, Notion, email (Postmark, Resend), search (Algolia, Meilisearch), observability (Sentry, Logtail) — built cleanly, not duct-taped.
Telemetry, feedback loops and experiments
Product analytics (PostHog, Plausible, Mixpanel) with clearly defined events, activation and conversion funnels, cohort analysis, error tracking (Sentry), structured logs, feature flags and a lean experimentation frame so A/B or rollout decisions sit on data, not vibes.
Iteration, growth and customer feedback
Short iterations with clear hypotheses, in-product feedback channels, discovery conversations with real users, a simple changelog, a transparent roadmap. Growth comes from learning per week, not "big releases" every three months.
Technical foundation and maintainability
Monorepo (Next.js + API, shared packages), TypeScript everywhere, defined module boundaries, code reviews, CI/CD (GitHub Actions, Vercel, Railway, Fly.io), automated tests at the right spots, observability, secret handling, database backups. Speed without a debt mountain.
From idea to MVP, launch and first paying customers — in weeks.
Each phase ships a visible output and hands cleanly to the next — whether we start at the whiteboard or pick up a half-built prototype.
- 01
Discovery and MVP scoping
Week 1–2We assess market, audience, value proposition, competition, hypotheses, risks. We compress the scope to the first value slice: what truly must exist in version 0.1 for a first customer to pay? What goes onto a reasoned backlog?
output → MVP scope · hypotheses · ordered backlog - 02
Architecture, auth/tenancy model and data model
Week 2–3We make the unsexy decisions early: stack, auth strategy, tenancy model, roles, relational data model, API shape, billing-ready structure, hosting, CI/CD. Captured in a short architecture memo — not in an 80-page spec.
output → Architecture memo · data model · API sketch - 03
Design system, launch website and product UI
Week 2–5A lean design system with tokens and core components. Launch website with a clear promise, an honest funnel, transparent pricing. Product UI for the first core flows: sign-up, onboarding, first value moment.
output → Design system · launch website · UI for core flows - 04
Build, integrations and telemetry
Week 3–8Implementation of the core flows, auth, tenancy, roles, data model, APIs, webhooks. Stripe/Paddle preparation. Product analytics, error tracking, logs, feature flags from the start. CI/CD live, preview deploys per pull request.
output → MVP build · telemetry · CI/CD · preview deploys - 05
Beta, honest feedback, iteration
Week 6–10Closed beta with 5–20 real users. We measure activation, drop-off, support response time. We iterate weekly, document learning, and push less-important work to the backlog instead of building it prematurely.
output → Beta insights · iterated MVP · clear launch plan - 06
Launch, first paying customers, operations
From week 10Public launch (website, optionally Product Hunt, newsletter, targeted channels). Stripe live, invoicing and tax correct, support workflow in place. First 90 days: stable onboarding activation, clear growth backlog, monthly business-level reporting.
output → Live product · billing live · operations routine
What a healthy early-stage SaaS product looks like.
A good early SaaS product isn’t measured by roadmap length. It’s measured by a few honest signals: a sharp value slice, honest activation, a clean foundation and the ability to move per week instead of per quarter.
Clear value slice, not a feature list
There is one sentence that explains the promise and one flow that delivers that value for a first customer in minutes. Anything that doesn’t support this path waits in the backlog.
The launch website converts honestly
Clear promise, honest product view, transparent pricing, clean sign-up or demo funnel. Analytics shows a measurable funnel, not just "clicks". Multilingual support, performance and SEO hygiene are right from day one.
Architecture is extensible, not over-built
Auth, roles, tenancy and data model are decided explicitly. Billing integration is structurally prepared even if it goes live later. Multi-tenant, SSO and multilingual paths are possible without a rewrite.
Telemetry is a default, not a luxury
Product analytics, error tracking, logs and feature flags exist from the first build. Activation, retention and conversion are measured, not guessed. Bugs surface before the customer reports them.
Iteration is weekly, not quarterly
Small releases, short feedback loops, a visible changelog. Hypotheses are explicit, learning is recorded. Growth comes from real user understanding, not standup speculation.
Technical debt stays under control
TypeScript everywhere, visible module boundaries, tests at key spots, mandatory CI/CD, real code reviews. "We’ll refactor later" is a conscious decision with a deadline — not wishful thinking.
Direct with the founder from Krefeld — technically reliable, no boilerplate romance.
p24.co is run by Dimitri Kronich from Krefeld, Germany. You talk directly to the person who scopes, architects, builds and integrates — no account layer, no offshore subcontractors, no two-week response times. We prefer a few well-understood building blocks over a stack of half-fitting templates that force a reset after three months.
- 01Direct with the founder — binding answers, short paths, technical honesty.
- 02MVP scoping by value and risk, not by feature romance.
- 03Architecture decisions documented explicitly, not hidden in the code.
- 04GDPR-aware delivery, EU hosting available, clear data flows.
- 05Communication in German, English and Russian — including international founder teams.
Common questions from startup and SaaS projects.
How long does a realistic SaaS MVP take at p24.co?
A focused first value slice typically goes live after 8–12 weeks — including the launch website, auth, tenancy and role model, core flows, telemetry and a billing-ready structure. More complex products (regulated verticals, multiple integrations, B2B with SSO) tend to run 12–18 weeks. We commit to a concrete range after discovery, not from a gut feeling.
Which stack? Next.js, .NET, Node, Python?
Our default for modern SaaS products is Next.js (App Router) + TypeScript + PostgreSQL + Stripe, with Auth.js/Clerk or Supabase, deployed on Vercel/Railway/Fly.io. For more data-heavy or enterprise-adjacent products we add .NET/ASP.NET Core. Python for AI and data paths. We decide based on your reality (team, roadmap, integrations), not on hype.
What does an MVP cost — and what comes after launch?
A focused MVP typically lands in the mid five-figure range (EUR), depending on the depth of architecture, integrations and design ambition. After launch we either work on capped monthly iterations or per project — no mandatory retainer. You can hand over to an internal team at any time; we plan that handover from day one.
We already have a prototype / boilerplate / half-finished code. Can you take it over?
Yes, often. We run a short code and architecture audit, review auth, data model, security, tests and build, and give you an honest read: what stays, what gets replaced, what a break costs now vs. in six months. We don’t trash every codebase — but we also won’t dress up something that can’t carry weight.
How do you handle auth, multi-tenancy and permissions?
Auth strategy depends on target market and buyer: B2C often magic-link or OAuth; B2B password plus SSO readiness (SAML/OIDC); enterprise paths via Clerk/WorkOS/Auth.js with an in-house identity layer. Multi-tenancy is either a workspace model with row-level security (PostgreSQL) or schema separation, depending on privacy and scale needs. Roles and permissions are modelled explicitly — not "admins can do whatever".
When should we wire in Stripe / billing — now or later?
The billing-ready structure (product and pricing model, subscription tiers, tax logic, invoice fields) we decide early. The live switch to Stripe/Paddle often comes after the first pilot customers, once the pricing model is validated. We avoid the classic mistake of bolting billing onto an architecture that was never designed for it.
How do you make sure the first enterprise customers don’t bounce (SSO, audit, DPA, EU hosting)?
We design for it from day one: the auth layer is SSO-ready, audit-log hooks are structurally prepared, data can sit in the EU (Frankfurt/AWS-eu-central-1/Hetzner), DPA and subprocessor list can be derived from the setup. We don’t pre-build everything — but we never build anything that would be impossible to retrofit later.
What about multilingual support, GDPR and EU-specific topics (tax, invoicing)?
Multilingual support is structurally considered from day one (i18n setup, content model, hreflang on the marketing site). GDPR hygiene (consent, data flows, subprocessors, deletion concept) is part of the architecture, not a checklist at the end. Tax logic (EU OSS, VAT, reverse-charge), mandatory invoice fields and accounting exports are accounted for in the data model early.
Related services and topics
Let’s scope your MVP, launch website and architecture together.
Send a short note about your stage (idea, prototype, first paying customer, migration), what your product promises and where the biggest bottleneck currently is. You get an honest read directly from the founder — no sales layer, no MVP miracle promises.