You will get a seamless third party API integration built fast and working perfectly
Project details
Do you need third party APIs integrated into your website or web application quickly, cleanly, and without breaking anything else? With 8+ years of full stack development experience, I integrate REST APIs, payment gateways, Stripe, PayPal, WhatsApp, OpenAI, Shopify, and any other third party service into your existing platform reliably and efficiently.
Whether you need a single API connected to your website, a complete payment gateway setup with Stripe or PayPal, webhook automation between systems, or multiple third party integrations working together seamlessly, I bring the technical expertise to get it done right the first time. I work with Node.js, Express, PHP, Python, React, and most modern web technologies so I can integrate into virtually any existing codebase regardless of the stack.
Every API integration I deliver is properly tested across all endpoints and error cases, well documented with clear usage instructions, and handed over with complete source code. I handle authentication, error handling, rate limiting, and data validation to make sure your integration is secure, stable, and production ready from day one without any unexpected failures or downtime.
Whether you need a single API connected to your website, a complete payment gateway setup with Stripe or PayPal, webhook automation between systems, or multiple third party integrations working together seamlessly, I bring the technical expertise to get it done right the first time. I work with Node.js, Express, PHP, Python, React, and most modern web technologies so I can integrate into virtually any existing codebase regardless of the stack.
Every API integration I deliver is properly tested across all endpoints and error cases, well documented with clear usage instructions, and handed over with complete source code. I handle authentication, error handling, rate limiting, and data validation to make sure your integration is secure, stable, and production ready from day one without any unexpected failures or downtime.
Database Type
SQLite, PostgreSQL, MongoDBWhat's included
| Service Tiers |
Starter
$100
|
Standard
$250
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
Number of Revisions | 3 | 4 | 5 |
Source Code | - |
Optional add-ons
You can add these on the next page.
Extra API Integration
(+ 2 Days)
+$80
Stripe Payment Integration
(+ 2 Days)
+$100
OpenAI ChatGPT Integration
(+ 2 Days)
+$100Frequently asked questions
About Annastesia Amarachi
Full Stack Developer | Web developer | Digital Markerter
Nsukka, Nigeria - 4:04 am local time
My main stack includes React, Next.js, Node.js, TypeScript, JavaScript, React Native, Python, PHP, and Angular. As a Full Stack developer, I build responsive user interfaces, develop backend services, create APIs, connect databases, and deliver features that support real business needs. I also work with Tailwind CSS, Material UI, MUI, SCSS, CSS, Webpack, Vite, Gulp, GraphQL, REST APIs, tRPC, Zustand, Redux, Redux Toolkit, React Query, and modern development workflows.
My skills:
React
Front-End Development
Web Development
Web Design
Laravel
Mobile App Development
Responsive Design
API
API Integration
Web Application
Database Architecture
HTML
Database Design
Python
Django
FastAPI
Express.js
NestJS
AWS Development
Docker
CI/CD
Git
GitHub Actions
Vercel
Netlify
Project Analysis
Web Application Development
Software Architecture & Design
Microservices
WebSockets
Authentication & Authorization
OAuth2
JWT
Stripe Integration
Payment Gateway Integration
Third-Party API Integration
Testing (Jest, Cypress, Playwright)
Agile / Scrum
As a Full Stack developer, I work with MongoDB, PostgreSQL, MySQL, Supabase, Firebase / Firestore, DynamoDB, Redis, and Prisma ORM. I can design and improve data structures, build scalable backend systems, and choose the right approach for each product. A Full Stack developer should understand how all parts of a system work together, and that is the approach I bring to every project.
Our teams also work as web developer and react developer specialists building high performance user interfaces and SaaS dashboards. Some companies hire us as wordpress developer experts for custom plugin development and integrations. When projects require cross platform products our engineers also work as mobile app developer teams delivering mobile applications connected to backend SaaS systems.
Clients hire me as a Full Stack developer when they need someone who can handle both frontend and backend tasks without losing sight of the product itself. I can join a team as a Full Stack developer, take ownership of a feature as a Full Stack developer, support scaling efforts as a Full Stack developer, or help stabilize an existing project as a Full Stack developer. I can also work as a Full Stack developer on MVP builds, refactoring tasks, feature expansion, bug fixing, and long-term maintenance.
My services as a Full Stack developer include:
React.js development, Next.js development, Node.js backend development, TypeScript applications, React Native mobile apps, API integration, database design, SSR, PWA, component libraries, design system implementation, HTML/CSS fixes, performance optimization, WebSocket implementation, cloud deployment, Docker containerization, serverless functions, headless CMS integration, and ongoing product support.
I also have strong experience as a Full Stack developer with SSR and PWA development, helping applications load faster, perform better, and provide a smoother user experience. I build SEO-friendly Next.js applications, mobile solutions with React Native, and modern web products that work well across devices and screen sizes. I have hands-on experience deploying to AWS, Vercel, and Netlify, managing cloud infrastructure, and working with serverless architectures and edge functions.
Beyond coding, I can contribute as a Full Stack developer who understands team processes and product delivery. I have experience with code reviews, Git workflows, GitHub Actions, CI/CD pipelines, Docker, architecture planning, and development team support. In some projects, I work only as a Full Stack developer. In others, I also help with technical leadership, project planning, and improving development workflows.
A good Full Stack developer should be able to move between frontend and backend work, understand the business goal, and keep the codebase stable as the product grows. That is how I work as a Full Stack developer on every project. Clients choose me as a Full Stack developer because I can cover a wide technology stack, communicate clearly, and deliver work that fits both technical and business needs.
If you need a Full Stack developer who can build, improve, and support modern digital products, I'm ready to help. I work as a Full Stack developer with attention to detail, clear communication, and a practical approach to problem-solving. Whether you need a Full Stack developer for a new product, a Full Stack developer for ongoing development, or a Full Stack developer to strengthen your current team, I can provide reliable support and solid technical execution.
Steps for completing your project
After purchasing the project, send requirements so Annastesia Amarachi can start the project.
Delivery time starts when Annastesia Amarachi receives requirements from you.
Annastesia Amarachi works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements & Planning
I review your project requirements, existing codebase, and the APIs you need integrated to plan the cleanest and most reliable integration approach.
API Integration & Development
I integrate your required third party APIs including payment gateways, REST APIs, webhooks, and automation tools into your website or web application.