You will get AI features integrated into your existing web app
Top Rated
Project details
Your app works, but your users now expect it to be smart. They want to search by describing what they need, get long content summarized, have a first draft written, and ask questions inside the product. Today they leave your app to do that somewhere else.
I add AI features straight into the app you already have. OpenAI or Claude, wired into your data, your login, and your screens. Not a chat bubble bolted onto the corner.
What you get:
AI features built into your existing app, matched to your screens and data
Your choice of model, OpenAI (ChatGPT) or Claude, picked for your use case and budget
The feature you need: smart search, summaries, content generation, or an in-app assistant
Streaming responses, so it feels fast instead of frozen
Cost controls and usage limits, so the AI does not blow up your API bill
Clean code merged into your project, tested and ready for users
Because it runs on the data and context your app already has, answers are relevant. And it is real code in your stack, built to ship.
Message me with the feature you want and your stack (Next.js, React, Node). I review your codebase before you order, so the scope and timeline are honest.
I add AI features straight into the app you already have. OpenAI or Claude, wired into your data, your login, and your screens. Not a chat bubble bolted onto the corner.
What you get:
AI features built into your existing app, matched to your screens and data
Your choice of model, OpenAI (ChatGPT) or Claude, picked for your use case and budget
The feature you need: smart search, summaries, content generation, or an in-app assistant
Streaming responses, so it feels fast instead of frozen
Cost controls and usage limits, so the AI does not blow up your API bill
Clean code merged into your project, tested and ready for users
Because it runs on the data and context your app already has, answers are relevant. And it is real code in your stack, built to ship.
Message me with the feature you want and your stack (Next.js, React, Node). I review your codebase before you order, so the scope and timeline are honest.
AI Algorithms
Large Language Model, Multimodal Large Language Model, Transformer ModelAI Applications
AI Chatbot, AI Content Creation, AI Mobile App Development, AI Text-to-Image, AI Text-to-Speech, AI-Enhanced Classification, AI-Generated Code, AI-Generated Video, AIOps, Conversational AI, Natural Language Understanding, Text RecognitionAI Models
ChatGPT, GPT-3, GPT-4, LLaMA, Midjourney AI, OpenAI CodexWhat's included
| Service Tiers |
Starter
$600
|
Standard
$1,000
|
Advanced
$1,600
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 28 days |
Number of Revisions | 1 | 2 | 3 |
AI Model Integration | |||
Batch Normalization | - | - | - |
Database Integration | - | ||
Detailed Code Comments | - | - | |
Image Upscaling | - | ||
MLOps | - | - | - |
Model Deployment | |||
Model Documentation | |||
Model Monitoring | - | - | |
Model Testing & Optimization | - | - | |
Model Tuning | - | - | |
Natural Language Processing | - | - | - |
NLP Tokenization | - | - | - |
Pre-Training | - | ||
Prompt Engineering | - | ||
Setup File | - | - | |
Source Code |
Frequently asked questions
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UA
Unliminted A.
Jul 4, 2026
Senior AI Product Engineer - Build LLM-Powered Competitive Intelligence Web App
This is the second time I've hired Miodrag, and it was just as smooth as the first. He understood exactly what I needed and works with a clear, structured process. Communication was easy the whole way through, which made the project a pleasant experience.
The AI tool he built saves me around 15 hours of manual work every week. He also knows AI space and LLMs inside out and shares practical advice on using it across my other projects, which has been a huge help.
Easy to work with, and I'll be hiring him again.
The AI tool he built saves me around 15 hours of manual work every week. He also knows AI space and LLMs inside out and shares practical advice on using it across my other projects, which has been a huge help.
Easy to work with, and I'll be hiring him again.
UA
Unliminted A.
Apr 29, 2026
AI-Assisted Website Development for Construction Company
Working with Miodrag was honestly a great experience. He built my website exactly the way I wanted and made the whole process smooth from start to finish. What stood out the most to me is how proficient he is with AI tools.
Beyond the technical side, he is very reliable and communicates clearly. Any feedback or changes I had were handled quickly and professionally.
I’d definitely recommend him to anyone looking for a skilled developer
Beyond the technical side, he is very reliable and communicates clearly. Any feedback or changes I had were handled quickly and professionally.
I’d definitely recommend him to anyone looking for a skilled developer
SC
Shane C.
Mar 12, 2026
AI Website Monitoring and Google Search Console Analysis Tool
I’ve spent over $30,000 on Upwork across a wide range of projects, and I can honestly say this has been one of the best experiences I’ve had on the platform.
The team delivered a solid AI business automation solution and handled the project with a level of professionalism that really stood out.
What impressed me the most:
Communication – Clear, fast, and consistent throughout the entire project. I never felt like I was waiting around for updates.
Follow-up – They stayed engaged during development and always made sure questions were answered quickly.
Project execution – They understood the requirements, implemented the automation properly, and kept everything moving forward.
Post-project support – Even after the project was completed, they continued checking in to make sure everything was working correctly.
It’s rare to find a team that not only delivers the work but continues to support the project after completion. That level of care makes a huge difference.
I would absolutely recommend them to anyone looking for AI automation, workflow automation, or technical development work. Great experience overall.
The team delivered a solid AI business automation solution and handled the project with a level of professionalism that really stood out.
What impressed me the most:
Communication – Clear, fast, and consistent throughout the entire project. I never felt like I was waiting around for updates.
Follow-up – They stayed engaged during development and always made sure questions were answered quickly.
Project execution – They understood the requirements, implemented the automation properly, and kept everything moving forward.
Post-project support – Even after the project was completed, they continued checking in to make sure everything was working correctly.
It’s rare to find a team that not only delivers the work but continues to support the project after completion. That level of care makes a huge difference.
I would absolutely recommend them to anyone looking for AI automation, workflow automation, or technical development work. Great experience overall.
DS
Danny S.
Feb 17, 2026
Moneybird + n8n Payment Status Automation
About Mio
AI Developer | SaaS MVPs & LLM Apps | Next.js, RAG & Agents
100%
Job Success
Belgrade, Serbia - 3:35 am local time
I am an AI Product Engineering Lead and Full Stack Developer with 10 years of production experience building software products, and the last two years focused specifically on LLM apps, AI Agents, and AI SaaS MVPs that founders can demo, sell, and raise funding with. My engineering background includes Aricoma Group, a $460M enterprise technology company, and I now lead AI product development at Moonstruck where every build is production-grade from day one.
One client, after I built his AI-powered internal tool for Search Console analysis, said this: "I have spent over $30,000 on Upwork across a wide range of projects, and this has been one of the best experiences I have had on the platform." That is the bar I work to on every project.
WHAT I HAVE SHIPPED
These are not personal projects. These are production AI apps and internal tools running right now for real businesses.
→ An AI Competitive Intelligence Platform for an iGaming operator that replaced 15 hours of weekly manual market monitoring with a 2-minute automated brief across 40+ operator sites, built on Next.js and Supabase
→ A multi-tenant Uniform Procurement Platform serving 10+ hotel groups across 30+ properties, cutting order-handling time by 70% and saving an estimated $20K a year in admin costs
→ A full SaaS platform for Traken that became the core of the startup's product and helped secure $600K in competitive grant funding including EU Innovation Fund and EIT Climate-KIC backing
→ PulseDex, a real-time crypto trading platform built on Node.js, React and PostgreSQL, running live for around 1,000 concurrent traders
→ A Barbershop Booking Platform handling around 1,800 bookings a month across 10+ staff, eliminating 8 hours of manual scheduling through intelligent automation
WHAT I BUILD FOR YOU
→ AI-powered SaaS and MVPs with LLM features built in, OpenAI API and Claude integration, multi-tenant architecture, Stripe billing, and row-level security, architected to scale from day one not patched later
→ AI agents and RAG systems built around your actual business logic, not wrapper demos that break under real usage, deployed on OpenAI API, Claude, and custom pipelines
→ Internal tools and AI-powered dashboards that replace manual workflows with intelligent automation, the kind that saves your team hours every single week
→ Full stack web platforms built on Next.js, Node.js, React, Python, Supabase, and PostgreSQL with auth, admin panels, and production-ready API integration from day one
HOW IT WORKS
Every project starts with a scoping call and a shared features document. I propose fixed-price milestones so there are no hourly surprises. I design the system and build a clickable prototype before writing any production code. Once approved, phased builds with daily updates until launch. After launch, ongoing support is available and I will give you a straight second opinion on scope and go-to-market whenever you want one.
CORE STACK
Next.js, React, Node.js, TypeScript, Python, FastAPI, PostgreSQL, Supabase, pgvector, MongoDB, Redis, AWS, Docker, Stripe, OpenAI API, Claude API, RAG, REST API, GraphQL, CI/CD, Vercel, Hetzner
Just send me a message to start. I'll guide the process and keep it simple on your end.
Steps for completing your project
After purchasing the project, send requirements so Mio can start the project.
Delivery time starts when Mio receives requirements from you.
Mio works on your project following the steps below.
Revisions may occur after the delivery date.
Review and plan
I look at your codebase and stack, confirm the feature fits cleanly, and lock the exact scope on a short call and a shared doc. This is where I catch anything that would slow the build, before you pay for it.
Build and ship
I build the AI feature into your app, wire it to your data and UI, add cost controls, test it against real use, and hand it back as clean code merged into your project.