You will get Expert Third-Party API Integration: Payment Gateways, CRM, Analytics & Mor3
Top Rated
Project details
With 10 years of experience as a full-stack developer, I specialize in integrating third-party services to enhance your app’s functionality. I offer seamless integration of the following:
Payment Gateways:
• Stripe, PayPal, Square
Marketing & CRM:
• HubSpot, ActiveCampaign, Mailchimp, Salesforce
Analytics & Tracking:
• Google Analytics, Mixpanel, Amplitude, Segment
Authentication & Security:
• Auth0, Okta
Communication & Customer Support:
• Twilio, Zendesk, Intercom, Freshdesk
E-commerce & Search:
• Algolia, Elasticsearch
Real-Time Communication:
• Pusher, Socket.io
Social Media Integrations:
• Facebook API, Twitter API, LinkedIn API, Instagram API
Maps & Geolocation:
• Google Maps API
I ensure secure, efficient integrations that boost user engagement, streamline workflows, and provide seamless functionality. Contact me to discuss your project needs before placing an order!
Payment Gateways:
• Stripe, PayPal, Square
Marketing & CRM:
• HubSpot, ActiveCampaign, Mailchimp, Salesforce
Analytics & Tracking:
• Google Analytics, Mixpanel, Amplitude, Segment
Authentication & Security:
• Auth0, Okta
Communication & Customer Support:
• Twilio, Zendesk, Intercom, Freshdesk
E-commerce & Search:
• Algolia, Elasticsearch
Real-Time Communication:
• Pusher, Socket.io
Social Media Integrations:
• Facebook API, Twitter API, LinkedIn API, Instagram API
Maps & Geolocation:
• Google Maps API
I ensure secure, efficient integrations that boost user engagement, streamline workflows, and provide seamless functionality. Contact me to discuss your project needs before placing an order!
Web Programming Project
API Development, API Integration, Data DashboardProgramming Languages
PHP, JavaScript, TypeScriptCoding Expertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$200
|
Standard
$300
|
Advanced
$400
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 8 days |
Number of Revisions | 2 | 4 | Unlimited |
Source Code |
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Joachim S.
Feb 25, 2026
Nextjs, Shadcn UI, Typescript, website creation
Mitul did an amazing job. He works quickly, delivers high-quality code, and communicates very effectively. He helped us set up a Vite project with Strapi and integrate Figma designs, which was a great support for our team.
I’m very happy with our collaboration and will definitely hire Mitul again for future projects.
I’m very happy with our collaboration and will definitely hire Mitul again for future projects.
GG
Gana G.
Feb 24, 2026
REACT Micro-Frontend
GK
Govinda K.
Feb 17, 2026
Front end dev - Property management
Mitul worked on my real estate website for ~1 year - from beginning to end . He is very quick and professional . Very good with making updates to website look and feel . I hired him again for different project . If you want a quick turnaround on any project with good look and feel , hire him .
AJ
Abel J.
Feb 10, 2026
Hermon.io - Recruitment Software Development
HC
Henry C.
Jan 27, 2026
PWA Technical Test
About Mitul
AI-Powered Full-Stack Engineer | React | Next.js | Python | Node.js
100%
Job Success
Ahmedabad, India - 1:16 pm local time
Top 1% freelancer - 12+ Years | 14,000+ Upwork hours work | $400K+ earnings | 150+ Jobs
I build full-stack web applications with React, Next.js + Tailwind + Node.js, Python — and increasingly, I integrate AI features directly into them (LLM-powered chat, RAG search, automation workflows) rather than bolting AI on as an afterthought.
LLM Agents & AI Chatbots · RAG & Vector Search · NLP & Deep Learning · Generative AI · AWS & Production
Do you want someone who is an expert in React, Nextjs, UI/UX, Tailwind CSS, Node.js, Python, Django, AWS expert for your next big project?
WHAT I DO
- Full-stack web apps: Next.js, React, Node.js/Express, Python/FastAPI, Django, TypeScript, Tailwind CSS
- AI-powered features: OpenAI/LLM integration, RAG & vector search, AI chatbots and agents
- Backend & APIs: REST, GraphQL, MongoDB, PostgreSQL, Supabase Expert, MySql
- Cloud & deployment: AWS (Lambda, S3, RDS), Docker, CI/CD
- Search: Algolia, Firebase Expert
- API Development & Integration
- Headless CMS - Strapi, Contentfull
HOW I WORK
1. Understand your goals and constraints before writing a line of code
2. Propose a clear technical plan — no surprises mid-project
3. Build, test, and ship in small, reviewable increments
4. Stay available post-launch for fixes and iteration
PYTHON FRAMEWORK
- Django, Flask, FastAPI (For secure and scalable back-end systems)
- AI/ML Automation:
- TensorFlow, PyTorch, scikit-learn (𝑀𝑎𝑐ℎ𝑖𝑛𝑒 𝑙𝑒𝑎𝑟𝑛𝑖𝑛𝑔 𝑚𝑜𝑑𝑒𝑙 𝑖𝑛𝑡𝑒𝑔𝑟𝑎𝑡𝑖𝑜𝑛)
DATABASES & CLOUD:
- Relational: MySQL, PostgreSQL, SQLite
- Non-relational: MongoDB, Elastic-search, Redis
- AWS Services: Lambda, Cognito, RDS, DynamoDB, S3, API Gateway, CloudFront, and more
DevOps & Automation
- AWS: EC2, S3, RDS, Lambda, ECS, CloudFront, Cognito, Bedrock
- Docker, Kubernetes, Terraform, GitHub Actions
- Cloud migrations, serverless architectures, infrastructure setup
- Vercel, Netlify, Railway deployments
- Security hardening, performance monitoring, and production support
- CI/CD Pipelines: GitLab CI, Jenkins
- Automation tools: Webpack, Babel, Vite
AI INTEGRATION & AUTOMATION
- OpenAI GPT-4o and Claude (Anthropic) API integrations into your products
- RAG pipeline development using LangChain, pgvector, Pinecone, and FAISS
- AI chatbots and conversational interfaces added to existing SaaS products
- Python/FastAPI or Django backends powering AI microservices and LLM workflows
- MCP server integrations and custom agent workflows
3rd Party Integrations
- Payment Gateways: Stripe, PayPal, Square, Binance API, Telegram API, OpenAI API, Stripe API, and more.
- Analytics: Google Analytics, Mixpanel
- Authentication: Auth0, Firebase, Okta
Fluent in async and real-time communication (Slack, Discord, Teams — your choice).
Comfortable with agile tools (GitHub, Jira, ClickUp, Notion, BitBucket).
Clean & High quality best Structure Code
Meeting deadlines & Daily Updates & Scrum calls
Together, let's create a great product.
💌 Feel free to invite me to your job post or book a consultation today!
Let's achieve your business 🎯 goals together.
Waiting to hear you! Cheers 🍻. 😀
Steps for completing your project
After purchasing the project, send requirements so Mitul can start the project.
Delivery time starts when Mitul receives requirements from you.
Mitul works on your project following the steps below.
Revisions may occur after the delivery date.
Project Analysis and Requirements Gathering
I will begin by thoroughly understanding your project's specific requirements and objectives. This includes identifying the APIs you need to integrate, the data you want to access or exchange, and any specific functionality you require.
API Selection and Authentication Setup
I will assist you in selecting the most suitable APIs for your project. We'll also set up the necessary authentication mechanisms, such as API keys or OAuth, to ensure secure access to the selected APIs.