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5.0on Fiverr

We build your SaaSlike it's our own.

You have the vision, early customers, or an MVP that holds together. Kavrn becomes your product + engineering team. We design, we code, we ship, we maintain.

We plug into all the tools your team already uses. View all
WhatsAppWhatsApp
GmailGmail
ExcelExcel
StripeStripe
SalesforceSalesforce
CalendlyCalendly
ShopifyShopify
ChatGPTChatGPT
Testimonials

Our clients say it better than we do

Raphaël
Raphaël
Dafex Conseil

His approach combining tech, product and entrepreneurship makes all the difference. A 360° vision very few devs have. Smooth, efficient, strategic.

Quentin Olaya
Quentin Olaya
Enovai Group
Sébastien Desmas
Sébastien Desmas
Tooth

Clear communication, responsiveness, proactive proposals. He understands the product need, adapts quickly to feedback, and moves forward in a structured way.

Tom
Tom
Digital Creator
Corto
Corto
Founder

Went far beyond what I expected: fixed every single bug, improved parts I didn't even notice, and delivered incredibly fast.

L
Lucas Veutin
BullGPT
Scope

What we build for you

MVP that scales

Not a Figma prototype. A live, paying, scalable product. Modern stack (Next.js, Postgres, Stripe, AI), designed to handle 10× the load without a rewrite.

Existing SaaS refactor

You have a product that ships but drags. We audit the debt, isolate the 20% that unblocks 80% of the friction, deliver in increments, without breaking current revenue.

AI verticals

You want the LLM at the core (not as a bolt-on chatbot). We orchestrate RAG, agents, evals, fallbacks, observability, tested on real cases before prod.

Integrations & automations

Private APIs, webhooks, scrapers, background jobs, Stripe / HubSpot / Slack / WhatsApp integrations. We glue your tools together cleanly.

Process

How it works

From first call to handover. Transparent process, no black box, MVP shipped in 45 days on average.

01

Discovery call

30 min on Zoom. You bring your ideas, your market, your constraints. We figure out what you actually want to build. Free, no commitment.

02

Full PRD, detailed product requirements

I write the spec line by line: scope, features, technical architecture, integrations, edge cases. You validate every point before we touch the code. No surprise scope creep mid-mission.

03

Quote signed

Fixed-scope pricing, staged payment. Zero hidden fees, zero out-of-the-blue "scope change" in the middle of the mission.

04

Parallel build, front design + back simultaneously

The front team starts mockups from your inspirations (Dribbble, sites you love) and iterates until you're happy. In parallel, the back team builds the DB, auth, integrations. You save 2 weeks vs a sequential workflow.

05

Landing on D+14, MVP in 45 days

First public version between D14 and D21, full MVP in 45 days on average. You track everything on a client dashboard with daily timeline, and we're reachable 24/7 on WhatsApp for any question.

06

Unlimited revisions + handover

Once live, you test with real users. Bugs fixed, details polished, unlimited back-and-forth until you're satisfied. End of mission: full security audit + comprehensive documentation. The code is yours, repo in your name. You can take it in-house anytime.

Security & support

Your code, your data.

You're never stuck with us.

Full code & data ownership

GitHub repo in your name from day 1, DB exportable anytime, zero vendor lock-in. You can take it in-house whenever you want.

Hosted in the country of your choice

US, EU, UK, Singapore, wherever. We deploy where your compliance requires it: GDPR, HIPAA, SOC 2 scope, regulated sectors.

Security audit at end of mission

Internal pentest on OWASP Top 10, secret scan, dependencies audited, report with remediation plan. Production-ready, for real.

CI/CD, tests & monitoring included

GitHub Actions pipelines, automated tests, Sentry monitoring, uptime alerts. The software stands on its own the day we leave.

24/7 WhatsApp support + real-time dashboard.

No ticket to open. We answer.

K

Kavrn

Online

Today

Hey Thom, we've got a prod bug on checkout. Can you take a look?

14:32

On it. Stripe webhook timing out?

14:33

Yep. Also would need a CSV export for the support team.

14:34

Bug fixed, prod deploy in 5 min. CSV export live on the dashboard tonight. ✅

14:36
Tech

The stack

Next.js · TypeScript · Postgres · Prisma · Tailwind · Stripe · OpenAI / Anthropic · Cloudflare · Vercel. Boring, battle-tested tech, no hype framework we'll have to replace in 18 months.

Kavrn
FAQ

Frequently asked

How much does it cost?

Every project is different: scope, business complexity, integrations, AI or not… We quote after a 30-min framing call. No generic price grid, we refuse to sell you a package that doesn't fit your reality.

Do you work with solo founders?

Yes, if you already have revenue or a strong signal (waitlist, LOI, pre-sales). We don't take raw ideas without market validation.

Do you take equity?

No. We're paid cash to stay aligned on shipping, not on a hypothetical 5-year valuation.

What if I want to bring the code in-house later?

It's planned from day 1. Clean code, GitHub repo in your name, up-to-date docs, drama-free handover. Our interest is your product lasting.

How many projects in parallel?

Three max. We'd rather actually ship than have twenty logos on the homepage and zero projects moving.

Got a product to build?

Easiest path: 30 min on Zoom, you tell us, we say yes or no. No endless Calendly, no pitch deck.

Book a call