You will get an AI endpoint for your Next.js or Node app, as a branch you merge
Project details
Most AI listings sell you a chatbot. This one sells the boring part that decides whether an AI feature survives production: one server route, streaming, a spend cap that stops a runaway loop before your bill notices, and a fallback that still returns something usable when the provider is down or the key is revoked.
You hand me nothing sensitive to get it. I build against a clean reference app on my own machine and give you a branch to review and merge, with a walkthrough. Your API key is read from an environment variable you set after merging, so it never passes through me and nothing of yours is billable while I work.
Done is four things you can check without trusting me: it calls, it streams, it stops at the cap, and it falls back when the key is revoked mid-request.
What I have shipped in this area, precisely: a Go service that asks an OpenAI-compatible model for a short phrase, publishes it automatically when the answer is good, and falls back to a draft a human edits when it is not. I would rather say that plainly than imply agents or retrieval, which I do not sell here.
You hand me nothing sensitive to get it. I build against a clean reference app on my own machine and give you a branch to review and merge, with a walkthrough. Your API key is read from an environment variable you set after merging, so it never passes through me and nothing of yours is billable while I work.
Done is four things you can check without trusting me: it calls, it streams, it stops at the cap, and it falls back when the key is revoked mid-request.
What I have shipped in this area, precisely: a Go service that asks an OpenAI-compatible model for a short phrase, publishes it automatically when the answer is good, and falls back to a draft a human edits when it is not. I would rather say that plainly than imply agents or retrieval, which I do not sell here.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Localization, Performance OptimizationWhat's included
| Service Tiers |
Starter
$200
|
Standard
$500
|
Advanced
$900
|
|---|---|---|---|
| Delivery Time | 10 days | 14 days | 21 days |
Number of Revisions | 1 | 2 | 2 |
Number of Pages | 1 | 1 | 1 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$150
Additional Revision
+$100Frequently asked questions
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TZ
Thorsten Z.
May 6, 2025
Senior React Frontend Developer
PM
Phil M.
Jan 3, 2025
Chrome Extension Testing Required
Awesome, thanks again
About Dmytro
Senior Full-Stack Developer | React, Next.js, Node | Payments & AI
100%
Job Success
Skalica, Slovakia - 9:36 am local time
Most developers can build a checkout. Fewer have shipped Stripe Connect payouts, fiscal receipts, card terminals at the door, and refunds that survive an audit. That part is what I own.
8 years shipping full-stack production software · 100% Job Success on Upwork · currently Frontend Lead on a platform with 6 connected surfaces and 4 payment and fiscal rails.
𝗪𝗵𝗮𝘁 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗵𝗶𝗿𝗲 𝗺𝗲 𝗳𝗼𝗿:
✅ Ticketing, marketplace and e-commerce platforms: storefront, checkout, orders, refunds
✅ Payments that don't leak: Stripe, Stripe Connect, subscriptions, card terminals, EU fiscal compliance
✅ SaaS dashboards and back-offices: roles, permissions, audit trails, heavy data grids
✅ React Native (Expo) apps that pair with a web product, on iOS and Android
✅ Taking AI-built prototypes to production. Codebases started in Claude Code, Lovable or Cursor: audit, auth and security, refactor, payments, deploy
𝗦𝗲𝗹𝗲𝗰𝘁𝗲𝗱 𝘄𝗼𝗿𝗸:
• Entrello: event-commerce platform, 12 years in production. I lead the frontend, from the drag-and-drop seating-plan editor and the live seat picker for large venues to the orders dashboard, email campaigns, and the Expo app used at the door for scanning and tap-to-pay.
• Next Gen Invest: a real-money trading terminal with TradingView charts, live positions and an auto-trader over WebSockets, with KYC and a trading CRM behind it.
• Purple Circle: a React Native app and a Next.js admin console on one Go GraphQL API, built for Austrian theatres. Progressive-reveal quests write their own teaser: the backend asks an LLM for the phrase and publishes it automatically, falling back to a draft the theatre edits.
• Etalon: agency site rebuilt on Next.js with 4 locales, an MDX blog the agency edits without a developer, Lighthouse 98, and analytics that count traffic from ChatGPT, Claude and Perplexity as its own channel.
Stack: React, Next.js, TypeScript, React Native and Expo, Node.js, GraphQL and Apollo, PostgreSQL, Stripe and Stripe Connect, Web3, Tailwind CSS, Docker, plus LLM features wired into product workflows: prompts, fallbacks, logging, not just a model call.
How I work: fixed scope and fixed price, milestones you approve one at a time. If the first one doesn't land, we stop there. Weekly demos, a live staging URL, and 30 days of priority bug fixes after launch.
Send me what you're building, its current state, and what has to be true for it to succeed. You get a straight answer on the shortest path and whether I'm the right person for it. Free, in 20 minutes.
Steps for completing your project
After purchasing the project, send requirements so Dmytro can start the project.
Delivery time starts when Dmytro receives requirements from you.
Dmytro works on your project following the steps below.
Revisions may occur after the delivery date.
I build against a clean reference app, not your codebase
You send a one-paragraph description of the feature and your framework version. Nothing else is required to start, and no credential of yours is ever in my hands.
One server route, your provider, your key
The route reads the key from an environment variable you set after merging. Prompt and model live in version control so you can change them without me.