You will get OpenAI or ChatGPT integrated into your SaaS
Project details
I work closely with founders who want to launch real platforms, not quick templates. Every marketplace I build is carefully structured with clear user roles, organized database architecture, and backend workflows that are designed to handle growth from day one.
Your platform can include vendor onboarding, listing management, commission setup, secure Stripe payment integration, and fully functional admin dashboards that give you control over your ecosystem. I focus on making sure vendors, buyers, and administrators interact smoothly without confusing logic or messy workflows behind the scenes.
Before development begins, we define the monetization model, user permissions, and core features clearly so the build stays focused and scalable. This prevents scope confusion and ensures your marketplace is structured properly from the foundation.
If you are serious about launching a marketplace that is stable, scalable, and built with intention, this service is designed for you.
Your platform can include vendor onboarding, listing management, commission setup, secure Stripe payment integration, and fully functional admin dashboards that give you control over your ecosystem. I focus on making sure vendors, buyers, and administrators interact smoothly without confusing logic or messy workflows behind the scenes.
Before development begins, we define the monetization model, user permissions, and core features clearly so the build stays focused and scalable. This prevents scope confusion and ensures your marketplace is structured properly from the foundation.
If you are serious about launching a marketplace that is stable, scalable, and built with intention, this service is designed for you.
Programming Languages
HTML & CSS, JavaScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$1,200
|
Standard
$4,000
|
Advanced
$10,500
|
|---|---|---|---|
| Delivery Time | 8 days | 18 days | 25 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 2 | 3 |
Design Customization | - | - | |
Content Upload | - | - | - |
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$500 - $2,000
Additional Revision
+$600
Additional Page
(+ 2 Days)
+$800About Annastecia
AI Integration Developer | ChatGPT | Flutter | Web Apps & Mobile
Lagos, Nigeria - 11:55 pm local time
I'm an AI Integration Developer specialising in AI-powered web and mobile apps for startups, SaaS founders. and growing businesses. I've spent the last four years doing one thing well, helping people turn product ideas into real, working systems that don't need to be rebuilt six months after launch.
I work across the full stack, from Flutter-based iOS and Android apps to React and Node.js web platforms, and I bring in AI capabilities that are structured, scalable, and actually useful to the people using your product every day. Not AI for the sake of a feature. AI because it makes your product better.
Here's what I build:
✅ AI Chatbot Development, ChatGPT-powered bots with memory, context, and custom conversation logic built around your users
✅ OpenAI and LLM API Integration, GPT-4, Claude, Gemini and other models embedded cleanly into your web or mobile app
✅ Flutter Mobile App Development, cross-platform iOS and Android apps with AI features that feel native, not bolted on
✅ Full Stack Web Application Development, React, Node.js, REST APIs, and database architecture built to grow with you
✅ SaaS MVP Development, from your idea to a production-ready platform complete with subscription billing, user auth, and dashboards
✅ AI Automation, connecting your tools, CRMs, and data pipelines so your team stops doing manually what a system can handle
✅ Bubble Development, fast no-code SaaS builds for founders who need to move quickly without sacrificing structure or scalability
✅ API Integration, Stripe, Firebase, Supabase, Twilio, and any third-party service your product depends on
What makes working with me different is how I start.
Before I write a single line of code, I sit with the architecture. I think through the database structure, the user flows, where the AI logic lives, and where the system needs to be able to scale. I've seen too many projects get rebuilt from scratch because nobody planned for growth at the beginning. That doesn't happen with me.
I've built subscription platforms, marketplace systems, custom CRMs, AI-assisted dashboards, and Flutter apps across multiple industries. My clients tend to describe it as working with someone who thinks like a co-founder, not just a developer they hired on a platform.
If you're building a web app, a mobile app, or a SaaS platform and you want the AI done right, scalable, clean, and ready for real users, send me a short message about what you're working on.
Let's build something worth building.
Steps for completing your project
After purchasing the project, send requirements so Annastecia can start the project.
Delivery time starts when Annastecia receives requirements from you.
Annastecia works on your project following the steps below.
Revisions may occur after the delivery date.
Marketplace Strategy & Scope Definition
We review your idea in detail, define user roles, commission structure, payment flow, and core MVP features before development begins.
Database Architecture & Role Setup
I design the database structure, configure vendor, buyer, and admin permissions, and set up the foundation for scalable growth.