AI engineer · full-stack developer
AI that actually works for your business.
AI assistants, agents and automations — plus the websites and apps they live in. Taken from first idea to live on your own domain.
Founding clients: 15% off any package for my first 3 projects, in exchange for an honest testimonial.
📩 new email · Dana R. · “any time Saturday for a consult?”
Inbox agentDana wants a Saturday consult. @Calendar what’s open?
Calendar agentSaturday 11:00 and 2:30 are free.
Inbox agentDrafted a reply offering both times + the intake form. Okay to send?
yousend it ✅
sent · 11:00 held for 24h · follow-up set for Friday
Social agentFYI: 3 Instagram comments asked about pricing. Replied with the booking link.
message your agents
↑ example: an assistant I build for a small business, booking a client end to end
888
commits in 2026
220k+
lines of code shipped
46
AI features built
★ 5.0
iOS app on the App Store
AI is the main thing I do
AI that works for your business, not a gimmick
I’ve built 46 AI features into real products this year. Here’s what that looks like when I build it for you.
01
Assistants that sound like you
Answers customers, drafts replies and writes proposals in your voice — and learns from every edit you make.
proof → LureAI
02
Agents that take action
Not just chat: it books the appointment, updates the CRM, sends the follow-up — inside limits you set.
proof → Moss & Code · BeatMind
03
AI that can see
Reads screenshots, receipts and documents, tags product photos, pulls the details out of an image.
proof → AI Stylist · SJ Studio
04
Content on autopilot
Lessons, product descriptions, social captions and reports, generated in bulk and checked before they ship.
proof → CodeCoach · Moss & Code
05
Forecasts you can plan around
Machine-learning models on your own sales data. My last one predicted monthly revenue within 2.6%.
proof → Nexova
06
Safe by design
Keys never in the app, rate limits, guardrails, and checks that catch the AI making things up before your customer sees it.
proof → OMU · AI Stylist
Now building
An AI marketing agent that runs your ads
It writes ad variations in your brand voice, launches small tests, watches what actually gets clicks and sales, moves budget to the winners and sends you a plain-English report every week. You approve the spend; it does the busywork. I’m testing it on my own launches first.
Join the pilot list →- 01Learns your brand
- 02Writes the ads
- 03Runs small tests
- 04Shifts budget to winners
- 05Reports weekly
Selected work
Real products, shipped
Every one of these I designed, built and launched end to end. Tap any of them for the full story.
iOS app · AI wellness companion
AI insideOMU
A solarpunk virtual pet and wellness companion for iPhone. Hatch and raise a Cultivar, play mini-games, and keep a journal your pet answers with gentle, AI-written reflections.
- ★ 5.0
- on the App Store
- 491
- commits, Mar–Oct 2026
- ~120k
- lines of code
- 49 + 4
- test files + end-to-end flows
read the case study →
My product · AI agent team
AI insideMoss & Code
An AI team that lives in a garden: five agents and a manager that learn your goals, turn them into quests and do the work (email, follow-ups, research, scheduling, content), asking you only when it matters.
- 6
- agents, one manager
- 64
- commits since Nov 9, 2026
read the case study →
AI SaaS · CRM
AI insideLureAI
An AI-powered CRM that helps models and influencers find brand contacts, pitch in their own voice, negotiate rates and close paid partnerships.
- 100
- Lighthouse accessibility
- 100
- Lighthouse SEO
read the case study →
SaaS · portfolio builder with AI
AI insideSJ Studio
A hosted portfolio service for models: each client gets a private studio to sift their camera roll, credit their team and publish a polished portfolio — with an AI “booker” review.
- 2 wks
- start to finish
- 100
- Lighthouse best practices
read the case study →
Musician website
SJ of the Garden
The official site for indie R&B and alternative soul artist SJ of the Garden — music, visuals, lore and booking in one immersive page, on its own domain.
- 100
- Lighthouse SEO
- 96
- Lighthouse accessibility
read the case study →
Backend · data · machine learning
AI insideNexova Platform
An operations platform for a (fictional) HR and recruiting firm: public site, back office, background jobs, data pipelines and a machine-learning revenue forecast.
- 2.61%
- average monthly forecast error
- 23 / 24
- months inside the predicted range
read the case study →
More builds
AI music co-producer
BeatMind · AI
Hum an idea and get MIDI and chords, sketch in a browser mini-DAW, and get a live theory coach that connects to FL Studio.
Next.js / tRPC / Prisma / Tone.js
AI learning platform
CodeCoach · AI
An AI study companion that checks whether you understand code, not just whether you got it right — spaced repetition, live-code games and a Claude tutor.
Next.js / tRPC / Prisma / PostgreSQL
Portfolio site + private AI photo studio
Sarah Jean — Model Portfolio · AI
A modeling portfolio with credits, comp card and runway video — plus a private studio that sorts thousands of photos with on-device vision and Claude.
Next.js / TypeScript / Claude API / Swift
Mobile app · prototype
AI Stylist Closet · AI
Photograph your clothes; AI tags each piece and builds outfits for any occasion from what you already own.
React Native / Expo / TypeScript / Claude Vision
Receipts
Don’t take my word for it, check
Live links you can open right now, and scores from Google’s own Lighthouse audit.
Open these yourself
Google Lighthouse · mobile · Nov 2026
| Site | Accessibility | Best practices | SEO |
|---|---|---|---|
| LureAI | 100 | 100 | 100 |
| SJ Studio | 96 | 100 | 92 |
| Model portfolio | 96 | 100 | 100 |
| SJ of the Garden | 96 | 79 | 100 |
Services
Whatever your business needs online, I can build it
Most clients start with one of these. Many end up combining two.
Websites that bring in business
A fast, custom site that looks like you — not a template — with booking or inquiry forms, Google-ready pages and content you can update yourself.
Like SJ of the Garden
AI assistants & automation
A chatbot that answers customers in your voice, drafts emails, sorts leads or reads documents — connected to the tools you already use.
Like LureAI · CodeCoach
Custom web apps & SaaS
Client portals, booking systems, dashboards and subscription products, with logins, a secure database and payments.
Like SJ Studio · LureAI
Mobile apps
iPhone and Android apps from design to App Store, with accounts, subscriptions, notifications and offline support.
Like OMU
Data, dashboards & forecasting
Turn spreadsheets into automated reports and forecasts — scheduled jobs, clean data and models you can plan around.
Like Nexova
Launch basics, handled
Domain, professional email, hosting, SSL, analytics and your Google Business Profile — set up properly, in your name.
Included with every website
Process
How we work together
Clear scope and a fixed quote before anything starts. You see progress every week.
- 01
Free consultation
A 30-minute call about your business, what you need the site or app to do, and your timeline.
- 02
Plan & fixed quote
A written scope, a fixed price and a launch date. A 50% deposit books your slot.
- 03
Design & build
A private preview link from week one. You comment, I adjust — revisions are built into every package.
- 04
Launch & handoff
Live on your domain, with a walkthrough video so you can update it yourself — and optional ongoing care.
Pricing
Pricing
Starting prices for typical projects. Every project gets a fixed quote after our call, so there are no surprises. Third-party costs — domain, email, hosting, AI usage — are billed at cost, in your name.
AI Assistant
Put AI to work on your website or inside your business.
starting at$2,500
- ✓Assistant trained on your services, FAQ and tone
- ✓Books, answers, qualifies leads or reads documents
- ✓Connected to your site, inbox, calendar or CRM
- ✓Guardrails so it stays on-topic and on-brand
- ✓Usage dashboard and cost controls
- ✓Live in about 2–4 weeks
Website
A custom site for a small business, artist or creator.
starting at$1,800
- ✓Up to 6 pages, custom design
- ✓Mobile-first and fast
- ✓Inquiry or booking form
- ✓Google-ready titles, descriptions and share images
- ✓Launch Basics included
- ✓Live in about 2–3 weeks
Web App
A custom app with logins, data and payments.
starting at$7,500
- ✓User accounts and a secure database
- ✓Dashboard, portal or booking system
- ✓Stripe payments or subscriptions
- ✓AI features where they help
- ✓Automated tests and deploys
Mobile App
An iPhone and Android app, from design to App Store.
starting at$12,000
- ✓iOS and Android from one codebase
- ✓Accounts, notifications and offline support
- ✓In-app purchases or subscriptions
- ✓App Store and Google Play submission
Launch Basics $450 one time
Already have a site? I’ll register your domain in your name, set up DNS and SSL, professional email on Google Workspace, analytics, and your Google Business Profile. Typical running costs: about $12/yr for a .com and $7/user/month for email.
Care Plan $149 / month
Hosting managed for you, security and dependency updates, uptime monitoring, and up to 2 hours of changes each month. Cancel anytime — you always own your domain, code and content.
About
One developer, from idea to launch
I’m Sarah Jean, an AI and full-stack developer in Miami. I build products end to end — the design, the code, the AI, and all the unglamorous setup that gets something live. I’ve shipped an iPhone app to the App Store, launched subscription software, and built data pipelines and forecasting models.
I’m also a working model and a recording artist, so I know what it’s like to be the client: you want something that looks like you, works on a phone, and doesn’t need a developer every time you change a sentence. That’s what I build.
— Sarah Jean
FAQ
Questions
How much will my project cost?+
The prices above are where typical projects start. After a free call I send a written scope with one fixed price — you’ll never get a surprise invoice. Larger projects can be split into phases.
Do I own my website, domain and code?+
Yes. Your domain, hosting and email are registered in your name, and the code is yours when the final payment is made. If you ever want to move on, I’ll hand everything over.
Can you help me get a domain and a professional email?+
Yes — that’s the Launch Basics package, included with every website. I’ll help you choose a name, register it in your account, and set up email like you@yourbusiness.com, analytics and your Google Business Profile.
What does hosting cost?+
Most small-business sites run on Vercel or Netlify for $0–20 a month. I’ll recommend the right plan for your traffic — commercial sites need a paid plan on some hosts — and quote it up front.
How long does it take?+
A website takes about 2–3 weeks. An AI assistant 2–4 weeks. Web and mobile apps usually 6–12 weeks, depending on scope. You’ll get a launch date in your quote.
What can AI actually do for my business?+
Answer common customer questions any time of day, draft replies and proposals in your voice, qualify leads, summarise documents, or tag and organise photos and data. I’ll only recommend it where it saves you real time.
Can I update the site myself?+
Yes. Every site is built so text, images and links are easy to change, and you get a walkthrough video. Or let the Care Plan handle it.
How do payments work?+
50% to book your slot, 50% at launch. For projects over $7,500, payments are split across milestones.
Free · no obligation
Tell me what you want to build
Send a few lines about your business and what you need. I’ll reply within two business days with honest next steps — whether or not we end up working together.