You will get API Integration & Testing Services | Postman | REST APIs
Project details
Expert API integration, testing, and debugging for Python and PHP systems. I ensure seamless connectivity, data accuracy, and performance optimization using Postman, requests (Python), cURL (PHP), and automated testing scripts.
🛠️ Services Included:
✅ API Integration – Connect third-party APIs (payment gateways, property data, SaaS tools).
✅ Postman Testing – Validate endpoints, auth (JWT/OAuth2), and debug responses.
✅ Custom Scripting – Python (requests, FastAPI) or PHP (cURL, Guzzle) for API automation.
✅ Error Handling – Fix malformed JSON (e.g., "activated": "trued": true" → clean boolean).
✅ Documentation – Postman collections, Swagger/OpenAPI specs, and usage guides.
How I Deliver
Postman Collection (shared via link/JSON file).
Python/PHP Scripts (GitHub repo or .zip).
Video Walkthrough (Loom/Google Meet) for complex projects.
Post-Deployment Checks (optional monitoring for 7 days).
🔍 Why Choose Me?
Bug-Free APIs: I catch inconsistencies (like your screenshot’s "trued": true").
Fast Turnaround: Tested workflows, no trial-and-error.
Transparency: Regular updates + screenshots (like Postman tests).
📩 Let’s Build Reliable APIs! Message me with your requirements.
🛠️ Services Included:
✅ API Integration – Connect third-party APIs (payment gateways, property data, SaaS tools).
✅ Postman Testing – Validate endpoints, auth (JWT/OAuth2), and debug responses.
✅ Custom Scripting – Python (requests, FastAPI) or PHP (cURL, Guzzle) for API automation.
✅ Error Handling – Fix malformed JSON (e.g., "activated": "trued": true" → clean boolean).
✅ Documentation – Postman collections, Swagger/OpenAPI specs, and usage guides.
How I Deliver
Postman Collection (shared via link/JSON file).
Python/PHP Scripts (GitHub repo or .zip).
Video Walkthrough (Loom/Google Meet) for complex projects.
Post-Deployment Checks (optional monitoring for 7 days).
🔍 Why Choose Me?
Bug-Free APIs: I catch inconsistencies (like your screenshot’s "trued": true").
Fast Turnaround: Tested workflows, no trial-and-error.
Transparency: Regular updates + screenshots (like Postman tests).
📩 Let’s Build Reliable APIs! Message me with your requirements.
Programming Languages
PHP, HTML & CSS, PythonCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$100
|
Standard
$150
|
Advanced
$200
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 2 | 3 | Unlimited |
Install Script | |||
Test Script | |||
Task Automation |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$25 - $75
33 reviews
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Joe C.
Jul 2, 2025
Build a Search Enhancement Plugin for osTicket with Redis Integration
AR
Ahmad R.
Apr 16, 2025
Deploy a simple containerized web app on AWS within 2 hours.
Khalil did an outstanding job deploying our containerized app on AWS. He quickly set up the infrastructure using Terraform and ECS Fargate, and the CI/CD pipeline via GitHub Actions worked perfectly. Everything was well-documented, and the app was live within hours. The deployment was smooth, and all requirements were met with precision. Highly recommend Khalil for any DevOps or cloud deployment work!
IA
Imanat A.
Apr 9, 2025
One-Time Web Scraping Script (Easily Customizable)
Outstanding experience! Highly skilled in Python, delivered clean, efficient code ahead of schedule. Absolutely recommend for any backend or automation projects!
BT
Bilal T.
Jan 31, 2024
System Analysis and Admin Panel
Khalil was very professional and delivered more then commitment. I have rarely seen this level of commitment and dedication in freelancers. Wish we could get him to states as a full time employee.
BJ
Bharti J.
Aug 30, 2023
Looking for a Core PHP Expert
About Khalil
Python Automation & Scraping Expert | I Build Bots That Save Businesse
100%
Job Success
Lahore, Pakistan - 5:20 pm local time
I'm Khalil Raza — a Python backend developer with 7+ years of experience building web scrapers, automation systems, APIs, and data pipelines that solve real business problems.
Most of my work comes down to one thing: replacing slow, manual, error-prone processes with fast, reliable, automated ones. Whether that's collecting data from websites at scale, automating a workflow that eats hours every day, or building a backend API that needs to hold up in production — I focus on solutions that actually work long-term.
✔ Web Scraping & Data Extraction
Scrapers that handle anti-bot protection, CAPTCHAs, pagination, and proxy rotation — built with Playwright, Selenium, Scrapy, and BeautifulSoup.
✔ Automation Bots & Workflow Automation
End-to-end bots that replace repetitive manual work: price monitors, lead collectors, report generators, notification systems.
✔ REST API Development
Production-grade APIs with FastAPI, Flask, and Django — with auth, rate limiting, and clean architecture built to scale.
✔ Third-Party Integrations
Stripe, Twilio, SendGrid, Google APIs, Slack — I connect your tools so your systems work together without manual handoffs.
✔ Data Pipelines & Storage
PostgreSQL, MySQL, MongoDB, Redis — structured pipelines that store, clean, and deliver data reliably.
✔ Cloud Deployment
AWS EC2, S3, Docker — I deploy and maintain what I build. The job isn't done until it's running in production.
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Projects I've delivered:
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• E-commerce scrapers collecting 50,000+ product listings daily with anti-bot handling and proxy rotation
• Lead generation automation that eliminated hours of daily manual research for a sales team
• FastAPI SaaS backends with JWT auth, Stripe billing, and AWS deployment
• Real-time price monitoring systems with automated alerts
• Automated reporting pipelines that replaced manual data entry workflows entirely
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Clients come back because I communicate clearly, ask the right questions before writing a single line of code, and respond within 4 hours. I write for production — not just to pass a demo.
If you have a project involving scraping, automation, APIs, or backend systems, send me an invite with your requirements. I'll review it and tell you honestly within 24 hours whether I'm the right fit — and exactly how I'd approach it.
Steps for completing your project
After purchasing the project, send requirements so Khalil can start the project.
Delivery time starts when Khalil receives requirements from you.
Khalil works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Analysis
Discuss API goals (e.g., property listings, payment processing). Identify pain points (slow responses, broken JSON, auth issues).
Setup & Testing
Python/PHP Environment: Python: requests, pytest, FastAPI (if building APIs). PHP: cURL, Guzzle, unit tests. Postman Configuration: Import endpoints, set auth, and test parameters.