From idea tolive productin weeks, not months.

Senior engineering paired with AI speed. We ship production-grade, revenue-ready software with 100% source code ownership.

See pricing

7–21days

idea to live product

100%

source code ownership

10+

MVPs shipped

50/50

milestone payment

Scope frozen by day 3Next.jsReactHono.jsPostgreSQLSupabaseStripe billingSenior-engineeredFixed scopeDeployed on VercelNo vendor lock-in

01/Who it's for

Built for the founder
who moves faster.

Recognize yourself? That call is free, 30 minutes, and comes with a fixed quote.

02/Why us

Three ways to build.
One of them ships.Agencies are slow and expensive. AI builders hit a wall at auth, billing, and scale. The sprint model exists because of what's wrong with both.

Agency

3–6 months

DIY AI

Not Reliable

Existify

7–21 days

Timeline

3–6 months
Weeks stuck
7–21 days, fixed

Cost

$15k–$50k+
Token burn
$1,495 / $3,995 fixed

Code ownership

Often restricted
Platform lock-in
100% yours

Who builds it

Junior contractors
Unreviewed AI
Senior engineers

Post-launch

Hourly retainers
You're on your own
$495/mo care plan

AI builders generate fragile prototypes. We ship software that takes payments on day one.

03/The moat

Speed is the tool.
Judgment is the moat.Anyone can prompt AI. Knowing when to trust it, and when to rewrite it, is what turns a demo into a business.

60%

faster than traditional dev

AI does the typing

Proven internal workflows with Claude, GPT, and Cursor handle scaffolding and boilerplate. We keep the speed and cut the busywork.

100%

human-reviewed code

Seniors do the judging

AI leaves silent failures: broken tokens, N+1 queries, missing retries. Every file passes senior review before it ships.

0

lock-in, ever

You own everything

Complete TypeScript repository on GitHub with setup docs. Hand it to any developer, or run it yourself, forever.

04/The stack

Boring technology,
exciting velocity.The same stack the best SaaS companies run. Your future hires will thank you for it.

Frontend

Interfaces that feel native

  • Next.js / React 19
  • TypeScript
  • Tailwind CSS
  • shadcn/ui & Radix

Backend

Business logic, APIs, jobs

  • Server Actions
  • Hono.js / Nest.js
  • Node.js
  • Zod validation

Database

Multi-tenant, secure, fast

  • Supabase / Neon
  • PostgreSQL
  • Drizzle / Prisma
  • Row-Level Security

Revenue layer

Billing from day one

  • Better-Auth / Clerk
  • Stripe Billing
  • Resend
  • OpenAI / Claude API

Already on AWS, Firebase, or Python? We adapt to your architecture, not the other way around.

05/The process

Every sprint runs
the same way.No surprises, no scope creep. Each phase has one deliverable and you watch it land in real time.

Days 1–3 · Phase 1 of 6

Scope freeze

One call to define what we build, what we skip, and why. Scope is signed and frozen on day 3.

Product briefDB schemaFixed quote
Sprint progress17%

06/Proof

Shipped in weeks.
Live in production.Every sprint ends with real software in front of real users. Two recent builds, straight from production.

AI SaaS · Developer tools/bip-os.com

BIP OS

Turn today's commits into today's post.

1 week

Sprint duration

MVP

Sprint type

3 formats

Outputs per day

Zero

Code exposure

React · Astro · Hono · PostgreSQL · Redis · Turborepo

https://bip-os.com
The BIP OS landing page: commit-to-content engine — BIP OS

The BIP OS landing page: commit-to-content engine

B2B SaaS · AI outbound/coldbind.com

ColdBind

The all-in-one autonomous AI outbound sales engine.

3–4 weeks

Sprint duration

SaaS

Sprint type

8

Core modules

Built from scratch

Auth

React · Astro · Nest.js · PostgreSQL · Redis · Passport.js (custom auth)

https://coldbind.com
The ColdBind landing page: autonomous AI SDR platform — ColdBind

The ColdBind landing page: autonomous AI SDR platform

Want your product in this section?

07/Pricing

One price.
Zero surprises.Fixed-scope sprints for founders who want momentum, not months of meetings.

The MVP Sprint

Most popular
$2,495

$1,495

Only 1 slot left this month

Idea to live product. Real users, real sign-ins.

7–14 Days
Non-technical foundersCreators & indie hackersDIY AI founders stuck
  • 1-hour Strategy & Scope Freeze (Day 1)
  • Auth, Database, and Core Features built
  • Stripe / Payment integration
  • Production Deployment (Vercel/Supabase)
  • 100% Source Code Ownership & Handover Docs

Live product ready for real users and payments in 7–14 days.

The SaaS Scale Sprint

For funded & B2B SaaS
$5,495

$3,995

Multi-tenant SaaS with billing, built to scale.

3–5 Weeks
Pre-seed startupsB2B SaaS foundersComplex workflows
  • Everything in MVP Sprint, PLUS:
  • Advanced Architecture (Multi-tenancy, RBAC)
  • Complex Workflows & API Integrations
  • Stripe Billing with Webhooks & Usage metering
  • Analytics foundation (PostHog/Mixpanel setup)
  • Priority QA & Load Testing

Scalable SaaS ready for enterprise customers, payments, and scale.

Startup Care

Fractional CTO
$795/mo

$495/mo

Only 2 slots left this month

Post-launch peace of mind without a full-time hire.

Ongoing
Post-launch foundersSolo foundersFractional CTO
  • Up to 20 hours of senior dev time / month (fixes & tweaks)
  • Server/Database monitoring & maintenance
  • Priority Slack/WhatsApp support
  • 1 Monthly Strategy Call
  • Overage: $20/hr for extra work

Keep shipping with confidence with a dedicated technical partner.

Fixed scope
No surprise invoices
Source code included
50% upfront · 50% on launch
Direct access to the founder

Every project starts with a free discovery call. Pricing shown is the starting investment and varies with scope and complexity.

08/The founder

Built by an engineer,
not a sales team.

I spent years watching founders pay agencies $15–30k, wait four months, and receive code they couldn't maintain. Or try DIY builders and hit a wall at auth and billing.

Existify is the third option. AI speed under senior engineering judgment, rigid timeboxes, and full source code ownership.

You work with me directly, from the first call to handover.

Connect on LinkedIn

09/FAQ

Asked before
every sprint.

2 sprint slots open for October

Have an idea worth testing?
Let's launch next week.

Book a free 30-minute call. Leave with scope, timeline, and a fixed quote.

or email sahil@existify.dev