๐ 100% JSS Python & FastAPI Developer with 3+ years of experience building production-ready automation, APIs, dashboards, internal tools, and AI-powered systems. Strong with Claude Code, Codex & Google Antigravity.
I build Python applications, FastAPI backends, custom automation systems, dashboards, AI agents, and full-stack internal tools for real business operations.
๐ PYTHON & BACKEND
โข Python applications and automation scripts
โข FastAPI backend development
โข REST APIs and third-party integrations
โข AsyncIO and concurrent processing
โข Background jobs and scheduled tasks
โข Webhooks and event-driven workflows
โข Data-processing pipelines
โข PDF, Excel, CSV, and document automation
โข PostgreSQL, MongoDB, Redis, Supabase
โข Authentication, roles, and permissions
โข Backend architecture for SaaS and internal tools
โ๏ธ CUSTOM AUTOMATION
I build custom automation when standard tools are not enough.
โข Business process and workflow automation
โข Email processing and automated communication
โข Document extraction and processing
โข Excel and CSV automation
โข Ticketing and investigation workflows
โข CRM and operations automation
โข API-to-API integrations
โข n8n workflows with custom Python services
โข Human approval and validation flows
โข Scheduled and event-driven workflows
๐ DASHBOARDS & INTERNAL TOOLS
โข Operations dashboards and admin panels
โข Internal business portals
โข Real-time monitoring interfaces
โข Task and workflow management
โข Reporting and analytics systems
โข Search, filtering, and data tables
โข CSV and Excel exports
โข Role-based interfaces
โข WebSocket real-time updates
๐ค AI, RAG & AGENTIC SYSTEMS
โข RAG chatbots over documents and company knowledge
โข AI agents and multi-step agentic workflows
โข OpenAI, Claude, and Gemini integrations
โข LangChain and LLM orchestration
โข Vector databases and semantic search
โข Tool calling and structured AI outputs
โข AI-powered document extraction
โข Confidence-based escalation
โข Human-in-the-loop AI workflows
๐ป AI-ASSISTED DEVELOPMENT
Claude Code, OpenAI Codex, Google Antigravity, AI-assisted debugging, refactoring, rapid prototyping, architecture, and feature development.
๐จ FRONTEND & FULL-STACK
When required, I build interfaces using React, Next.js, TypeScript, JavaScript, Tailwind CSS, HTML, and CSS for SaaS apps, dashboards, admin panels, operations portals, and AI interfaces.
โ๏ธ SYSTEMS I'VE DELIVERED
๐ 3PL LOGISTICS & OPERATIONS AUTOMATION PLATFORM
Built a production system for a Netherlands-based 3PL that reduced manual email handling by approximately 90%.
It handles carrier investigations, evidence, tracking data, communication workflows, operational statuses, and internal processes in one system instead of shared mailboxes and spreadsheets. The platform is still used in daily operations.
๐ AI DOCUMENT PROCESSING PIPELINES
Built Python workflows for PDFs and images, structured AI extraction, validation, and Excel/CSV outputs.
๐ REAL-TIME WAREHOUSE OPERATIONS PLATFORM
Built a live system for staffing, task management, priorities, monitoring, reporting, audit history, and Excel/CSV exports.
๐ฌ RAG SUPPORT SYSTEM WITH HUMAN HANDOFF
Built an AI support assistant that answers from company documentation, detects low-confidence responses, escalates to human agents, manages tickets, and logs unresolved questions.
๐๏ธ AI PROPERTY FEASIBILITY PLATFORM
Built workflows that convert zoning PDFs into structured constraints, design inputs, and feasibility calculations with human verification.
๐ MULTI-SITE AI CONTENT PLATFORM
Built an AI-assisted workflow for content generation, human review, publishing across 6 websites, and translation into 12 languages.
๐งฉ TECH STACK
Python: Python 3, FastAPI, Pydantic, AsyncIO, Pandas
Backend: REST APIs, WebSockets, Node.js, Express
Frontend: React, Next.js, TypeScript, Tailwind CSS
Databases: PostgreSQL, MongoDB, Redis, Firebase, Supabase
AI: OpenAI, Claude, Gemini, LangChain, RAG, Vector Databases, AI Agents
Automation: Custom Python Automation, n8n, Make, Zapier
AI Development: Claude Code, Codex, Google Antigravity
Cloud: AWS, Docker, Vercel, Cloudflare
๐ค HOW I WORK
I first understand the workflow, then decide what should be automated, what requires human control, how the backend should be structured, and what users need to see.
I focus on clean architecture, reliable APIs, validation, maintainable code, and production-ready systems.
I can take full ownership across Python backend development, automation, databases, API integrations, dashboards, AI integrations, and frontend development.
๐ฉ HAVE SOMETHING TO BUILD?
If you need a Python Developer, FastAPI backend, custom automation system, AI agent, RAG application, dashboard, internal tool, document-processing pipeline, API integration, or AI-powered SaaS product, send me your requirements.
API Integration
RESTful API
Full-Stack Development
Next.js
React
Node.js
TypeScript
SaaS Development
Web Application Development
PostgreSQL
MongoDB
AI Agent Development
OpenAI API
LangChain
n8n
Python
FastAPI
Automation
AI Implementation
Generative AI
Sheryansh G.
Surat, India
$30/hr
4.8
57 jobs
Iโm an AI Automation Specialist helping agencies, service businesses, and growing teams build reliable workflows using Make, n8n, Zapier, GoHighLevel, APIs, webhooks, and AI agents.
With 7+ years of full-stack development experience, I bring more than basic no-code automation. I can design, debug, and scale automation systems that connect CRMs, lead forms, databases, dashboards, AI tools, internal systems, and custom backend logic.
I help businesses automate lead capture, CRM updates, qualification, follow-ups, reporting, team notifications, appointment workflows, AI document/email intake, and internal operations.
What I can help with:
Make, n8n, and Zapier workflow automation
GoHighLevel workflows, pipelines, triggers, forms, and CRM automations
AI agents for lead qualification, email intake, document processing, summarization, routing, and follow-up
API integrations, webhooks, JSON mapping, retries, and error handling
Airtable, Google Sheets, and internal reporting dashboards
Booking workflows, reminders, human handoff, and CRM updates
Custom scripts, dashboards, portals, and backend workflow logic when no-code tools are not enough
A lot of my work involves fixing automation systems that already exist but are unreliable: duplicate leads, failed webhooks, wrong field mapping, broken CRM triggers, missing data, automations firing twice, bad dashboard numbers, or AI outputs that need better structure before they can be trusted.
Relevant expertise:
AI automation, workflow automation, Make automation, n8n workflows, Zapier integrations, GoHighLevel automations, CRM automation, API integration, webhook troubleshooting, AI agents, OpenAI workflows, lead qualification systems, Airtable dashboards, Google Sheets reporting, backend workflow logic, JavaScript, Node.js, PHP/Laravel.
If your workflow is messy, breaking, or too manual, send me a message. I can review your current setup, find the weak points, and help build a system your team can actually rely on.
RESTful API
CSS
jQuery
Vue.js
Laravel
JavaScript
Node.js
CodeIgniter
Bootstrap
HTML
Mockup
Web Design
Rahul K.
Rupnagar, India
$16/hr
4.8
34 jobs
Top Rated Plus | API Integration, CRM Automation & Zapier Expert (3000+ Hours). I build reliable automation systems connecting APIs, CRMs, and SaaS platforms.
If your platforms donโt talk to each other, your data is messy, or your automation is breaking โ I fix it.
โ๏ธ What I Can Help You With
๐น API Integration & Backend Development
REST API / GraphQL integrations
Webhooks & event-driven systems
Custom API development
SaaS platform integrations
๐น CRM Setup & Automation
HubSpot CRM
Zoho CRM
Salesforce automation
Attio CRM workflows
Freshworks / Freshsales configuration
Zendesk integrations
๐น Automation Systems
Zapier automation
Make (Integromat)
Workflow automation
Lead automation pipelines
Data syncing between platforms
๐น Telephony + CRM Integrations
RingCentral integrations
Power dialer integrations
Call logging automation
VoIP + CRM syncing
๐น Data & System Integrations
Airtable integrations
WordPress API integrations
Order fulfillment automation
CRM data extraction & reporting
๐ Recently Delivered Projects on Upwork
โ Upgraded Zapier API โ Cloud Hosted API automation for telecom phone systems
โ Designed lead enrichment + outreach automation system
โ Built Attio CRM automation (4 workflows) using Zapier + API scripting
โ Freshworks / Freshsales CRM configuration & automation
โ Created Zendesk API data extraction & reporting pipeline
โ Integrated Keap + Freshbooks API for invoice & customer sync
โ Built WordPress API integration for secure data exchange
โ Integrated VaultRE + Monday API for workflow automation
โ Developed RingCentral + Zapier + Salesforce automation
โ Built Podium โ Airtable API sync system
โ Fixed RingCentral API authentication + call logging
โ Zoho CRM + RingCentral Power Dialer integration
โ FieldPulse โ RingCentral call tracking automation
โ Brightpearl โ WeSupply API automation for order fulfillment
๐ Platforms & Technologies
CRM Platforms
HubSpot โข Zoho โข Salesforce โข Attio โข Freshsales โข Zendesk โข Keap
Automation Tools
Zapier โข Make (Integromat) โข Webhooks โข Workflow Automation
APIs & Backend
REST API โข GraphQL โข Custom API Development โข Data Syncing
Business Platforms
Airtable โข WordPress โข Brightpearl โข WeSupply โข Monday
Telephony Systems
RingCentral โข Podium โข FieldPulse โข VoIP Integrations
โญ Why Clients Work With Me
โ 3000+ Upwork Hours Completed
โ Top Rated Plus Freelancer
โ Deep experience in complex API integrations
โ Strong problem-solving & debugging skills
โ Reliable long-term automation systems
โ Clear communication & fast response
๐ฉ Let's Build Your Integration
If you need help with:
API integrations
CRM automation
Zapier workflows
Telephony integrations
SaaS platform integrations
Send me a message and let's discuss your project.
API Development
API
API Documentation
API Integration
RESTful API
JavaScript
PHP
Laravel
phpMyAdmin
JSON API
HubSpot
WordPress Plugin
Zendesk API
WooCommerce
RingCentral Glip
Claude 2
OpenAI API
JSON
Brijesh Y.
Azamgarh, India
$15/hr
5.0
527 jobs
I am a full-stack PHP web developer with more than 14 years of experience in web development and API integration.I develop web applications using PHP, MySQL, WordPress, and Laravel.My goal has always been to create websites that are highly functional but also completely focused on the needs of the client.
Top-Rated Upwork Freelancer | Delivered over 460 five-star projects, ensuring absolute client satisfaction
Why Work With Me:
----------------------------------------------------------------------------
Proven track record of high-quality & error-free deliverables
On-time delivery & Continuous post-project support to ensure long-term stability
Clear communication and timely delivery on every contract
----------------------------------------------------------------------------
I have successfully integrated over 300 APIs globally, which has equipped me with expert skills in API integration.Here are some of the API integrations I have successfully completed.
Accounting & Billing :-
Billing Orchard API, Chargebee API, Debitsuccess API, Escrow API, MYOB API, Payleadr API, Payme API, QuickBooks API, Reckon API, Saasu API, SecurionPay API, Small2Invoice API, Xero API
CRM & Marketing Automation :-
ActiveCampaign API, Capsule CRM API, GoHighLevel API, HubSpot API, Keap (Infusionsoft) API, Klaviyo API, Ontraport API, Total Expert API, Zoho CRM API , Boulevard api , Redtails Api
E-Commerce, Inventory & Shipping :-
Booqable API, eBay / Shopping API, FedEx API, Inventory Planner API, Magento API, Parcel Pro API, ShipEngine API, Shipit API, Shopify API, SKUSavvy API, Unleashed API, UPS API, USPS API , Shopify Api integration
Field Service & Project Management :-
FieldRoutes API, Filevine API, Housecall Pro API, Hubstaff API, Procore API
Productivity, Automation & Forms :-
Google Apps Script, Jotform API, Qualtrics API, Zapier API , Printful Api integration
Communication & Helpdesk :-
Constant Contact API, Freshdesk API, OneSignal API, Phone Wagon API
Social Media & Ad Tech :-
AdButler API, CJ (Commission Junction) API, Facebook API, Instagram API, LinkedIn API, Linkshare (Rakuten) API, X (Twitter) API
Events, HR & Staffing :-
Aviontรฉ API, BambooHR API, Bookeo API, RunSignUp API, TryBooking API, Webtickets API
ERP & Open Data & Media & Wearables :-
NYC Open Data API, Odoo API, Quickbase API, Zoho API , Discogs API, Fitbit API, Garmin API, Spotify API , Manager io api
Other :-
Angaza API, Bisnode (Bisweb) API, CommCare API, ElevenLabs API, Jobs API, Litmos API, Lovable AI, Redtail API, SpyFu API, Teamleader API, Whereismypartners API
Specialist in the following domains:
ย ย - Front End development , Back-end development, Full Stack PHP, Laravel, CodeIgniter, Cakephp.
ย ย - Shopify, WordPress, Webflow, Custom Wordpress Plugin , Custom Wordpress Theme.
- Wordpress widget development, Created Leaderboard by using the 3rd party api data
ย ย - Wordpress Custom plugin and Wordpress themes development , Wordpress Api integrationย ย
ย ย - Wordpress Woocommerce orders and customer synch with 3rd party site
ย - Product Inventory Catalog Sync Api , SuiteDash customization
- WordPress Development
- Api developer
- CRM Automation
- WooCommerce
- Laravel
- RESTful API
Reasons to select my services:
- I possess a demonstrated history of producing high-quality work.
- I offer clients continuous support following the project's completion.
Should we collaborate, I am dedicated to delivering high-quality work efficiently. After completing a project, I offer continuous support to ensure the applications are error-free and highly adaptable for end users.
Feel free to reach out with any inquiries, and I will respond promptly..
API
API Integration
RESTful API
WordPress Development
PHP
WordPress Plugin
Automation
Business Process Automation
SOAP API
Facebook Graph API
Zoho CRM
Make.com
Zapier
WooCommerce
Payment Gateway Integration
Front-End Development
Back-End Development
Web Development
HubSpot
Google Spreadsheets API
Nargishbanu K.
Surat, India
$20/hr
4.9
4 jobs
โญโญโญโญโญ "Nargish was very agreeable, helpful, and a great person to have on the team when we needed her. As we now go in a new direction under a new developer, her time has drawn to an end on our project. I'm grateful for her work and hope our paths cross again!" - Matthew and Steve.
โญโญโญโญโญ "Completed the work. Everything was wonderful! Thank you!" - Dr Lisa Palmer, Renew Media Productions
I help startups, SaaS companies, and growing businesses build secure, scalable web applications using Laravel, Go, Node.js, React, and modern cloud infrastructure. Whether you're launching an MVP, modernizing an existing platform, or scaling an existing product, I build systems that are maintainable, performant, and production-ready.
My Technical Expertise
- Frontend: React, Vue, Next.js, Tailwind CSS, TypeScript
- Backend: Laravel, Go (Gin/Echo), Node.js, Nest.js, REST APIs, Authentication, Modular Architectures
- Databases: MySQL, PostgreSQL, MongoDB, Firebase, Redis
- Automation & Workflows: n8n, Zapier
- DevOps: Docker, AWS, CI/CD, Cloud Deployments
Results Iโve Delivered
- Optimized frontend assets and backend queries, improving page load speed by up to 70%.
- Refactored backend architecture and API workflows, reducing recurring support issues by approximately 50%.
- Delivered highโperforming custom Shopify features and automations
If you want similar results, youโre in the right place.
I work best with:
- SaaS startups
- Growing technology companies
- Digital agencies
- E-commerce businesses
- Product teams
- Companies modernizing legacy applications
I prioritize writing clean, maintainable, and scalable code while keeping communication transparent throughout the project. My focus is on delivering reliable software that is easy to extend, secure by design, and aligned with your long-term business goals.
I'm happy to discuss your project, review your architecture, and suggest the most practical technical approach before we begin.
KEYWORDS
Full Stack Developer | Senior Laravel Developer | Go Developer | Node.js Developer | Backend Engineer | API Developer | REST API | GraphQL | React Developer | Next.js | TypeScript | Microservices | SaaS Development | MVP Development | Enterprise Applications | System Architecture | Cloud Infrastructure | AWS | Azure | Docker | CI/CD | PostgreSQL | MySQL | Redis | n8n | Automation | Shopify Custom Apps | Performance Optimization | Web Application Development
API Development
Laravel
Golang
REST API
Database Design
Docker
TypeScript
Full-Stack Development
Node.js
React
Vue.js
Next.js
Automated Workflow
Shopify Development
SaaS Development
Performance Optimization
Supabase
Firebase
CMS Development
Strapi
Anil K.
Chandigarh, India
$15/hr
4.8
141 jobs
I help businesses integrate CRM, ERP, Accounting, and SaaS platforms using secure APIs, OAuth 2.0, Webhooks, and Workflow Automation.Specialized in QuickBooks, Xero, HubSpot, Salesforce, Pipedrive, Monday com, Zapier, Make com, and custom API integrations.
I specialize in API Integration, System Integration, Workflow Automation, and Business Process Automation, connecting CRM platforms, accounting software, ERP systems, marketing tools, and custom applications through secure, scalable integrations.
Over the years, I've delivered integrations for startups, SaaS companies, agencies, healthcare organizations, accounting firms, logistics businesses, and enterprise clients using REST APIs, OAuth 2.0, Webhooks, and custom backend development.
Whether you need to synchronize customer data, automate business workflows, migrate legacy integrations, or build a custom API solution, I focus on reliability, security, and long-term maintainability.
โญ Core Expertise
API Integration
REST API โข GraphQL โข SOAP API โข Webhooks โข OAuth 2.0 โข OAuth Authentication โข JSON โข XML โข API Development โข API Testing โข API Troubleshooting โข Postman
CRM Integration
HubSpot โข Salesforce CRM โข Pipedrive โข Monday com โข ActiveCampaign โข Mautic โข Ontraport
Accounting & ERP Integration
QuickBooks Online (QBO) โข Xero โข MYOB โข Moneybird โข MarginEdge โข Financial Data Synchronization
Workflow Automation
Zapier โข Make com (Integromat) โข n8n โข Workflow Automation โข Business Process Automation โข Data Synchronization
Backend Development
PHP โข Laravel โข Node.js โข Next.js โข Supabase โข Express.js
Databases
MySQL โข PostgreSQL โข SQL Server โข Supabase Database
๐ Services
โ Third-Party API Integration
โ Custom API Development
โ CRM Integration
โ ERP Integration
โ Accounting Software Integration
โ OAuth 2.0 Authentication
โ Webhook Development
โ API Migration
โ Legacy API Modernization
โ Data Mapping
โ Data Synchronization
โ Database Integration
โ Zapier Automation
โ Make com Automation
โ Workflow Automation
โ API Debugging & Maintenance
๐ผ Platforms I've Integrated
CRM Platforms
HubSpot โข Salesforce โข Pipedrive โข Monday com โข ActiveCampaign โข Mautic
Accounting Platforms
QuickBooks Online โข Xero โข MYOB โข Moneybird โข MarginEdge
Business Applications
Calendly โข Slack โข Mailgun โข TinCheck โข JobAdder โข TrackDrive
๐ Integration Experience
โ HubSpot โ QuickBooks Online
โ HubSpot โ SQL Server
โ Salesforce โ Aircall
โ Xero โ MYOB
โ Xero โ Monday com
โ Pipedrive โ Moneybird
โ CRM โ Practice Management Software
โ CRM โ Accounting Software
โ SQL Database โ QuickBooks
โ OAuth 1.0a โ OAuth 2.0 Migration
โ Third-Party API Development
โ Custom REST API Integration
โ Webhook Development
โ API Performance Optimization
โ Data Migration & Synchronization
๐ก Why Clients Work With Me
โ Business-first approach to integrations
โ Secure OAuth 2.0 implementation
โ Reliable real-time and scheduled data synchronization
โ Scalable architecture for long-term growth
โ Clear communication and documentation
โ Clean, maintainable code
โ Strong debugging and problem-solving skills
โ Long-term support after delivery
โ๏ธ Technology Stack
API Integration โข REST API โข GraphQL โข SOAP API โข OAuth 2.0 โข Webhooks โข Postman โข PHP โข Laravel โข Node.js โข Next.js โข Supabase โข SQL Server โข MySQL โข PostgreSQL โข Git โข Docker โข HubSpot Expert โข HubSpot CRM Setup โข HubSpot CRM Management โข HubSpot Sales Hub โข HubSpot Marketing Hub โข HubSpot Workflow Automation โข HubSpot CRM Migration โข HubSpot Lead Generation โข HubSpot Email Marketing
API Development
API Integration
RESTful API
Xero
Salesforce
Twilio API
QuickBooks Online API
HubSpot
Pipedrive
Aircall
PHP
Google APIs
OAuth
OpenAI API
CRM Automation
Zapier
SaaS Development
JavaScript
n8n
CRM Development
How it works
Post a job for freePost a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
โUpwork provides an umbrella-level of security. I can see a talentโs work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.โ
KD
Kim Darling
Emerald Tiger
โUpwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.โ
DM
David Merry
Kinetic Investments
โOur very specific requirements can be a challengeโWith Upwork, weโre able to access a bigger community to ensure the success of our projects.โ
KK
Katja Krohn
Summa Linguae
How do I hire a API Developer in India on Upwork?
You can hire a API Developer in India on Upwork in four simple steps:
Create a job post tailored to your API Developer project scope. We'll walk you through the process step by step.
Browse top API Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top API Developer profiles and interview.
Hire the right API Developer for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a API Developer?
Rates charged by API Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a API Developer in India on Upwork?
As the world's work marketplace, we connect highly-skilled freelance API Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream API Developer team you need to succeed.
Can I hire a API Developer in India within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive API Developer proposals within 24 hours of posting a job description.