You will get Stripe payments integrated into your React or Next.js app
Project details
Payments are where projects get stuck — I make them just work. I integrate Stripe into your React or Next.js app cleanly and securely: Checkout, subscriptions, webhooks, 3DS, and multi-currency, tested end to end.
6+ years building production web apps, including a platform that processes real Stripe payments (deposits, full-payment, multi-currency) for a brand now at ~$4M in revenue. I know the parts that break — webhook verification, idempotency, failed-payment and refund flows — and I handle them properly.
You get a working payment flow in test and live mode, secure webhooks, clean success/error handling, and clear notes on how it's wired. Your keys stay yours; I use test keys until you're ready to go live.
Send your repo and Stripe details — I'll reply with a clear first step. Need subscriptions or a customer portal? Go with the Checkout + Webhooks or Subscriptions + Portal tier.
6+ years building production web apps, including a platform that processes real Stripe payments (deposits, full-payment, multi-currency) for a brand now at ~$4M in revenue. I know the parts that break — webhook verification, idempotency, failed-payment and refund flows — and I handle them properly.
You get a working payment flow in test and live mode, secure webhooks, clean success/error handling, and clear notes on how it's wired. Your keys stay yours; I use test keys until you're ready to go live.
Send your repo and Stripe details — I'll reply with a clear first step. Need subscriptions or a customer portal? Go with the Checkout + Webhooks or Subscriptions + Portal tier.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$129
|
Standard
$299
|
Advanced
$599
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | ||
Source Code |
About Serdar
Senior Frontend & Full-Stack Developer | React, Next.js & Stripe
Mary, Turkmenistan - 3:18 am local time
6 years shipping production web apps — including the e-commerce platform behind Unidea, a brand now at ~$4M revenue.
🚀 6+ years building production web apps end to end
🛒 Built the platform behind Unidea (unidea.ru) — a custom-product brand that scaled to ~$4M (₽382M) revenue, +5.2x YoY
💳 Stripe payments — deposits, full-payment, 3DS, multi-currency, error recovery
📈 +15% checkout conversion · −35% critical bugs · +25% faster delivery (last product)
🧩 Full-stack: React/Next.js front + NestJS/Prisma/PostgreSQL back, self-hosted deploy
👥 Led & mentored frontend teams (grew a team 1 → 3, mentored 4 devs)
🔥 WHAT I DO
You're building a web product, MVP, or SaaS that needs a frontend that converts and a backend that holds up. I own it end to end — React/Next.js UI, NestJS APIs, PostgreSQL, payments, and deployment — and ship in weeks, with clean code your future team won't curse.
🔥 WHAT I BUILD
✅ Frontends that convert — multi-step onboarding, pricing & checkout, dashboards, admin panels
✅ Backends that scale — NestJS REST APIs, PostgreSQL + Prisma, Redis queues, JWT/argon2 auth
✅ Stripe billing & checkout — deposits, full-payment, subscriptions, 3DS, multi-currency
✅ Next.js apps — App Router, SSR / SSG, SEO, Core Web Vitals
✅ Quality built in — Playwright E2E, TypeScript strict, Zod validation, Swagger API docs
✅ Ship & run it — Docker, self-hosted deploy (Coolify on Ubuntu/VPS), AWS S3, CI/CD
🔥 RESULTS I'VE DELIVERED
✔ Built the e-commerce platform behind Unidea (unidea.ru) — a custom-product brand now at ~$4M (₽382M) revenue, +5.2x YoY
✔ +15% offer-to-checkout conversion on a 7-step booking funnel
✔ −35% critical regressions with Playwright E2E coverage
✔ +25% faster feature delivery using AI-assisted workflows (Claude, Codex)
✔ Shipped full-stack apps end to end — React/Next.js front, NestJS/PostgreSQL back, self-hosted deploy
🔥 HOW I WORK
I think like a product engineer, not a ticket-taker. I align on the business outcome first — who the user is and what they pay for — then ship in weekly demos with clear, written updates (async-friendly and comfortable across time zones).
1️⃣ Discovery & scope — define the MVP boundary
2️⃣ Architecture — clean, scalable foundations (FSD + TypeScript)
3️⃣ Weekly sprints with demos
4️⃣ Launch — CI/CD, tests, monitoring
5️⃣ Post-launch support
🔥 TECH STACK
Frontend: React, Next.js (App Router, SSR/SSG), TypeScript, Redux, Zustand, TanStack Query, React Hook Form, Zod, Tailwind CSS
Backend: Node.js, NestJS, REST API, Prisma, PostgreSQL, Redis, BullMQ, JWT & argon2 auth, Swagger
Payments: Stripe (Checkout, 3DS, deposits & full-payment, multi-currency)
DevOps: Docker, Coolify, Ubuntu/VPS, CI/CD, AWS S3
Quality: Playwright, GTM, Amplitude, i18n
🚀 Building a web product, MVP, or SaaS? Send a short brief via "Invite" or "Message" — I'll reply with a clear first step and a realistic timeline, no obligation.
🔍 React Developer | Next.js Developer | Full Stack Developer | Frontend Developer | Node.js Developer | NestJS Developer | TypeScript Developer | PostgreSQL | Prisma | Redis | REST API | Stripe Integration | SaaS Developer | E-commerce Developer | Web Application | Dashboard Development | Docker | Web Development
Steps for completing your project
After purchasing the project, send requirements so Serdar can start the project.
Delivery time starts when Serdar receives requirements from you.
Serdar works on your project following the steps below.
Revisions may occur after the delivery date.
Integrate, secure, and test payments
I wire up Stripe Checkout (or subscriptions), handle webhooks securely, add success/error flows, and test the full payment path before handing off.