Do you handle design, or just development?

We're developers first. We build clean, functional UI with modern component libraries, or implement your designs if you have them. We can generate logos and assets as needed — no Figma file required.

What tech stack do you use?

We use a modern JavaScript stack: React for the frontend, Supabase (PostgreSQL) for the database, Stripe for payments, Resend for email, and Vercel for hosting. We also build mobile apps (React Native), Chrome Extensions, and desktop apps (Electron). Everything is battle-tested and well-documented.

What types of apps can you build?

SaaS platforms, marketplaces, dashboards, internal tools, Chrome Extensions, mobile apps (React Native), desktop apps (Electron), Unity games, landing pages with payment flows, and API-heavy backends. Every MVP ships with a landing page and content engine (blog, SEO pages) — no separate admin panel needed, it's all AI-driven.

What happens after the 4 weeks?

The codebase is yours forever. The AI context files (CLAUDE.md, MEMORY.md, AGENTS.md) mean any developer — or even you with an AI code editor — can keep building exactly where we left off. If you want us back, we offer month-to-month extensions at the same rate.

What about analytics, GDPR, and SEO?

We include legal pages via iubenda (Privacy Policy, Terms, Cookie consent) out of the box — production-ready, no lawyers needed. Analytics, Sentry, and SEO are configurable during scoping. Everything is a trade-off against dev time — you choose what matters most.

What does '100% upfront' mean?

Payment is due before the 4-week sprint starts — but only after we've fully scoped the project together. The initial questionnaire starts a back-and-forth conversation that can go multiple rounds until both sides are locked in and committed. No surprises. Once paid, you get full transparency via Slack, Notion, and GitHub — you can follow every commit in real time.

What scope fits in 4 weeks?

A focused MVP with auth, core features, payments, and deployment. Scope is frozen before the contract — we prioritize ruthlessly during scoping. If Feature 4 threatens Feature 1, Feature 4 gets cut. We ship a working product, not a half-built wish list.

Do you handle marketing emails, ads, or lead campaigns?

We set up transactional emails and marketing email templates with consent and unsubscribe flows via Resend. We don't run ongoing ad campaigns or manage social media — but every MVP gets a launch boost: we post on LinkedIn, X, Dev.to, the BigDevSoon newsletter, and write a guest blog post to give your product its first wave of visibility.

Do I need to provide a logo and brand assets?

It helps, but it's not required. If you have a logo, brand colors, or design guidelines — great, we'll use them. If not, we'll generate a logo and pick a clean, modern palette that fits your product. You can always refine later.

Do you handle design, or just development?

We're developers first. We build clean, functional UI with modern component libraries, or implement your designs if you have them. We can generate logos and assets as needed — no Figma file required.

What tech stack do you use?

We use a modern JavaScript stack: React for the frontend, Supabase (PostgreSQL) for the database, Stripe for payments, Resend for email, and Vercel for hosting. We also build mobile apps (React Native), Chrome Extensions, and desktop apps (Electron). Everything is battle-tested and well-documented.

What types of apps can you build?

SaaS platforms, marketplaces, dashboards, internal tools, Chrome Extensions, mobile apps (React Native), desktop apps (Electron), Unity games, landing pages with payment flows, and API-heavy backends. Every MVP ships with a landing page and content engine (blog, SEO pages) — no separate admin panel needed, it's all AI-driven.

What happens after the 4 weeks?

The codebase is yours forever. The AI context files (CLAUDE.md, MEMORY.md, AGENTS.md) mean any developer — or even you with an AI code editor — can keep building exactly where we left off. If you want us back, we offer month-to-month extensions at the same rate.

What about analytics, GDPR, and SEO?

We include legal pages via iubenda (Privacy Policy, Terms, Cookie consent) out of the box — production-ready, no lawyers needed. Analytics, Sentry, and SEO are configurable during scoping. Everything is a trade-off against dev time — you choose what matters most.

What does '100% upfront' mean?

Payment is due before the 4-week sprint starts — but only after we've fully scoped the project together. The initial questionnaire starts a back-and-forth conversation that can go multiple rounds until both sides are locked in and committed. No surprises. Once paid, you get full transparency via Slack, Notion, and GitHub — you can follow every commit in real time.

What scope fits in 4 weeks?

A focused MVP with auth, core features, payments, and deployment. Scope is frozen before the contract — we prioritize ruthlessly during scoping. If Feature 4 threatens Feature 1, Feature 4 gets cut. We ship a working product, not a half-built wish list.

Do you handle marketing emails, ads, or lead campaigns?

We set up transactional emails and marketing email templates with consent and unsubscribe flows via Resend. We don't run ongoing ad campaigns or manage social media — but every MVP gets a launch boost: we post on LinkedIn, X, Dev.to, the BigDevSoon newsletter, and write a guest blog post to give your product its first wave of visibility.

Do I need to provide a logo and brand assets?

It helps, but it's not required. If you have a logo, brand colors, or design guidelines — great, we'll use them. If not, we'll generate a logo and pick a clean, modern palette that fits your product. You can always refine later.

Stop Burning Runway
on Slow Agencies.

Your MVP. 4 Weeks.

$10k. Ship It.

One lead engineer + AI agents, exclusively on your project. You get a scalable, AI-ready codebase you own 100%.

Apply for a Slot

Mar: SOLD OUT

Apr: 1 SLOT

May: 1 SLOT

Jun: 1 SLOT

10+ Years in Production

Silicon Valley

AI-First Workflow

Fully Remote

Hi, I'm Adrian — 10+ years shipping production apps for Silicon Valley companies

LinkedIn GitHub X Dev.to

5.0 Rating Codementor / MentorCruise

Companies I've built for

Mimica Nutrient Kinsta Sinch j-labs Grape Up Ericsson

Proof of Velocity

We don't talk about speed. We prove it.

5 days View Project →

BigDevSoon 2.0

12k+ users

Full platform revamp — landing page + app rewrite. Powered by Claude AI.

Astro React Supabase Merlin AI Claude Code API

4 weeks View Project →

JobTrackr.it

1k+ users

SaaS job tracker with Chrome Extension for one-click saving from any job board.

React Supabase Chrome Extension Stripe

2 weeks View Project →

BullAlert.ai

New

Real-time penny stock alerts ($0–$20 US market) with financial algorithms and sentiment APIs.

React Supabase Stripe Financial APIs Social APIs Cron Jobs

10 days View Project →

Void Balls

Steam

2D roguelite bullet-hell platformer — 15 power-ups, 5 enemy types, boss fights. AI-first game dev.

Unity 6 C# Claude Code Replicate ElevenLabs

Want results like these?

Wall of Fame

From mentoring 100+ engineers to building production MVPs.

Working with Adrian was great, he was an expert who could deliver the highest quality in the shortest amount of time, as well as lead, train and support other teams at the same time. I highly recommend working with Adrian and I hope we do work together again in the future.

Ata Alqadi

Senior Product Manager @ ex-Sinch, ex-Bitrise

I work with Adrian as my mentor for three months, I can't thank him enough for how he was supportive, informative, and above all full of knowledge in the Front end industry. He is the kind of guy who tells you straight about your weakness and strength without hesitation. He always comes up with a personal plan that evaluates my progress and suggests the areas that need to be improved. I can proudly say with his help and guidance I am a confident front end developer and motivated every day to improve my skill sets, I genuinely recommend him to anyone who is looking for a mentor that he worth your time and investment.

Mesfin Tegegne

Mentee

Adrian Bigaj is an extremely friendly and outgoing mentor, always coming to my, and others' aid when we need it. He works tooth and nail mentoring us, coming up with new and modern ideas of ways to get us to the next level in Web Development in the pursuit of our success

Benjamin Scott

Engineering Lead @ ZURB

View all recommendations on LinkedIn

Ready to build yours?

Most Agencies Lock You In.
We Set You Free.

CLAUDE.md

# Project: MyStartup MVP

## Stack: React + Supabase + Stripe

## Key Decisions

- Auth: Supabase Auth with Google OAuth

- Payments: Stripe Checkout Sessions

MEMORY.md

## Patterns

- All API calls go through src/lib/api.ts

- Error handling uses custom AppError class

- Toast notifications via sonner

AGENTS.md

## Builder Agent

- Implements features following CLAUDE.md

## QA Agent

- Runs Playwright tests after each PR

- Reports coverage to Slack channel

What you get on Day 28:

Landing Page + Content Engine + App — conversion-optimized landing page, blog & SEO pages, and full-featured application — all production-ready
Payments & Billing — Stripe subscriptions, one-time payments, lifetime deals, promo codes — fully wired
Database & Auth — Supabase with RLS policies, migrations, email/OAuth/SSO login, and role-based access
Analytics & Monitoring — analytics script (e.g. Umami, Clarity), Google Search Console, error tracking — know what's happening from day one
GitHub Repos — full source code, yours forever
Live Deployment — Vercel configured with sitemap, robots.txt, and SEO optimized
CI/CD Pipeline — preview deploys on every PR, review agents, auto-release from tags, pre-commit hooks
Testing Suite — Playwright E2E + unit tests, all green
Responsive on All Devices — app + landing page tested on mobile, tablet, and desktop
Emails (Transactional + Marketing) — configured with consent and unsubscribe flows
Legal Pages via iubenda — Privacy Policy, Terms of Service, Cookie consent — production-ready
Launch Boost — we post your MVP on LinkedIn, X, Dev.to, BigDevSoon newsletter, and write a guest blog post
Ads Automation — API-driven ad campaigns, competitor analysis, and automated performance tracking

What we configure for you:

AI Context Files — CLAUDE.md, MEMORY.md, AGENTS.md committed to repo
1Password Vault — every API key and account credential
Dedicated Google Profile — Gmail, all SaaS accounts, tabs grouped and ready to go
Professional Slack Workspace — async-first communication channel with structured Notion feedback
Notion Handover Guide — step-by-step docs so any dev (or AI) can continue building

"After we leave, open the repo in an AI IDE, type 'Add dark mode,' and the AI knows exactly how."

Own a self-driving codebase

We Don't Just Code.
We War-Game Your App.

Builder Agent

Writes feature code following CLAUDE.md standards

Review Agent

Scans for security holes and anti-patterns

QA Agent

Spawns Playwright, clicks every button, tries to break it

Merge & Deploy

Green light. Preview deploys auto. Tags release to production.

Builder Agent

Writes feature code following CLAUDE.md standards

Review Agent

Scans for security holes and anti-patterns

QA Agent

Spawns Playwright, clicks every button, tries to break it

Merge & Deploy

Green light. Preview deploys auto. Tags release to production.

We don't merge code until the agents give it a green light.

What We Build

Web Apps

Mobile (React Native)

Browser Extensions

Desktop (Electron)

Unity Games

Slack Apps

What We Configure

Auth & Users

Database

Payments

Emails

Legal Pages

Hosting & CI/CD

Preview Deploys

Code Review Agents

Auto-Release

Pre-commit Hooks

Sitemap & SEO

Error Tracking

Analytics

Search Console

Ads Automation

We don't build admin dashboards or manage social media. We build the product and give it a launch boost. You own the rest.

From Apply to Launch,
Step by Step

Before the clock starts

You Apply

Fill out the form. Within minutes, you get an auto-reply with our scoping questionnaire.

Apply now

Scope & Prioritize

We analyze your answers within 24 hours. This starts a back-and-forth conversation — we iterate on scope, pricing model, and priorities until both sides are fully aligned. Final feature list locked. Prioritized top-down. No scope creep.

Contract & Payment

Fully remote contract signed via Remote.com — compliant, global, no paperwork headaches. $10k paid upfront. Your month is locked in. One lead dev exclusively dedicated to your project — no juggling multiple clients.

Remote.com

The 4 weeks start

Onboarding

Day 1

We create all accounts in your name — GitHub, hosting, database, email, everything. Every credential stored in 1Password. Slack and Notion configured. Professional workspace ready. You follow every commit in real time.

Build Sprint

Week 1–3

Builder, Review, and QA agents work in parallel under human oversight. Async-first: Slack for daily updates, Notion for structured feedback, demo recordings for walkthroughs. 99% handled async — calls available on request if needed.

Review & Polish

Week 4

You test on all devices — mobile, tablet, desktop. We iterate. Buffer for fixes, edge cases, and polish. Scope can be trimmed if needed to ensure quality.

Handover

Day 28

Google profile transferred. 1Password vault handed over. CI/CD pipeline live — preview deploys, review agents, auto-release from tags. Sitemap and Google Search Console configured. CLAUDE.md, MEMORY.md, AGENTS.md committed. Testing suite green. Deployed and live.

Async-first. If no feedback within 24h, the train doesn't stop. 99% is handled via Slack, Notion, and demo recordings. Calls available on request (up to 4x 30-min per month).

Start your 28-day build

$10,000

flat fee

One flat fee. 100% upfront. Fully remote.

Includes

Full-stack development
Responsive design (mobile + desktop)
Modern, clean UI
Landing page + blog + app
Auth & database
Payments (Stripe)
Email setup (transactional + marketing)
Legal pages (Privacy, Terms, Cookies)
Dedicated Slack workspace
Dedicated Google profile
AI handover docs (CLAUDE.md, MEMORY.md)
Notion handover guide
Testing (Playwright E2E + unit tests)
Deployment (Vercel, CI/CD, preview deploys)
SEO foundation
Error tracking & analytics
Ads automation setup
Launch boost
4 weeks async support

Bonus

Every client gets: BigDevSoon Lifetime Plan ($299 value) + JobTrackr Lifetime Plan ($99 value) — $299 of bonus tools, on us.

Level up your skills while we build, or track your next opportunity.

You cover

Third-party SaaS costs: domain, Supabase, Vercel, Stripe fees, Resend, iubenda, Sentry, analytics, ad spend, API credits, and any other services used in your stack. Most are free-tier or under $20/mo at MVP scale.

Not included

Admin dashboards, social media, ongoing support (unless extended)

1 project per month. March is sold out.

Apply now for April.

Apply for a Slot

Already Built Your MVP?

Boost It to 25,000+ Developers

Get your product in front of our multi-channel developer community. One package, six channels, real builders who ship every day.

Learn More

Questions?
We've Got Answers.

Ready to Ship
Your MVP?

March is sold out. We're booking April now.

Prefer email? hello@adrianbig.ai

We respond to every inquiry within 24 hours.

Stop Burning Runway on Slow Agencies.

Proof of Velocity

BigDevSoon 2.0

JobTrackr.it

BullAlert.ai

Void Balls

Wall of Fame

Most Agencies Lock You In. We Set You Free.

What you get on Day 28:

What we configure for you:

We Don't Just Code. We War-Game Your App.

Builder Agent

Review Agent

QA Agent

Merge & Deploy

Builder Agent

Review Agent

QA Agent

Merge & Deploy

What We Build

What We Configure

From Apply to Launch, Step by Step

You Apply

Scope & Prioritize

Contract & Payment

Onboarding

Build Sprint

Review & Polish

Handover

Boost It to 25,000+ Developers

Questions? We've Got Answers.

Do you handle design, or just development?

What tech stack do you use?

What types of apps can you build?

What happens after the 4 weeks?

What about analytics, GDPR, and SEO?

What does '100% upfront' mean?

What scope fits in 4 weeks?

Do you handle marketing emails, ads, or lead campaigns?

Do I need to provide a logo and brand assets?

Ready to Ship Your MVP?

Stop Burning Runway
on Slow Agencies.

Most Agencies Lock You In.
We Set You Free.

We Don't Just Code.
We War-Game Your App.

From Apply to Launch,
Step by Step

Questions?
We've Got Answers.

Ready to Ship
Your MVP?