You will get E-commerce & Fintech Backend Solutions
Project details
✅ What’s Included:
💳 Payment Gateway Integration (Easypaisa, JazzCash, Stripe)
💰 Wallet & Transaction Management System
💾 Database Design & High-Performance Backend
🔐 Secure Authentication & Authorization
⚙️ Microservices Architecture & API Development
🧪 Testing, CI/CD, and Deployment
📝 Strategic Process:
1️⃣ Requirements Analysis & Architecture
2️⃣ Database & Backend Design
3️⃣ Microservices Implementation & API Integration
4️⃣ Security & Performance Optimization
5️⃣ Delivery & Support
💳 Payment Gateway Integration (Easypaisa, JazzCash, Stripe)
💰 Wallet & Transaction Management System
💾 Database Design & High-Performance Backend
🔐 Secure Authentication & Authorization
⚙️ Microservices Architecture & API Development
🧪 Testing, CI/CD, and Deployment
📝 Strategic Process:
1️⃣ Requirements Analysis & Architecture
2️⃣ Database & Backend Design
3️⃣ Microservices Implementation & API Integration
4️⃣ Security & Performance Optimization
5️⃣ Delivery & Support
Programming Languages
PHP, Python, JavaCoding Expertise
PSD to HTML, Performance Optimization, DesignWhat's included $139
These options are included with the project scope.
$139
- Delivery Time 2 days
- Number of Revisions 2
- Number of Pages 1
- Responsive Design
- Source Code
8 reviews
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NW
Nida W.
Mar 15, 2026
Experienced AI Chatbot & Voice Agent Developer Needed for Customer Support & Business Automation
Outstanding work on our AI chatbot and voice agent project! Delivered high-quality, fully functional chatbots for web, WhatsApp, FB/IG, plus intelligent voice agents. Professional, fast (completed in under a week), excellent communication, and reliable testing. Highly recommend for any AI automation needs, will definitely rehire!
NW
Nida W.
Mar 6, 2026
Full Stack Developer Needed for Multi-Tenant Installment ERP System
Osama is highly skilled and an expert in development. He delivered the project professionally and on time, with clear communication throughout the process. The deployment was handled smoothly and the final result met all requirements. I would definitely recommend him and would be happy to work together again.
NW
Nida W.
Feb 26, 2026
PayPal Integration Specialist Needed
Osama did an excellent job with our payment integration project. He clearly understands what he’s doing and handled everything smoothly from start to finish. He delivered beyond my expectations. He truly seems like an expert in his work. I would definitely prefer working with him again for future.
JH
Jonathan H.
Jan 22, 2026
Additional scraping task from Opta
Osama delivered perfectly once again!
AR
Angga R.
Jan 21, 2026
Full-Stack Java Developer | Build Reliable Web Apps
Awesome to work with! He understood our needs fast, delivered clean and reliable code, and made the whole process smooth. Would gladly collaborate again.
About osama
Software Developer| Automated Web Scraping|Java Spring Boot|Java
89%
Job Success
Sharjah, United Arab Emirates - 8:13 am local time
I help startups and growing businesses build 𝐟𝐚𝐬𝐭, 𝐬𝐞𝐜𝐮𝐫𝐞, 𝐚𝐧𝐝 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 using 𝐉𝐚𝐯𝐚 𝐒𝐩𝐫𝐢𝐧𝐠 𝐁𝐨𝐨𝐭 𝐚𝐧𝐝 𝐌𝐢𝐜𝐫𝐨𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬 so their products can grow without performance, security, or reliability issues.
With𝟗+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐟𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞, I don’t just write code, I design and build 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 that handle real users, real traffic, and real business demands.
If you need a developer who understands 𝐛𝐨𝐭𝐡 𝐭𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲 𝐚𝐧𝐝 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐢𝐦𝐩𝐚𝐜𝐭, you’re in the right place.
𝐖𝐡𝐚𝐭 𝐈 𝐃𝐞𝐥𝐢𝐯𝐞𝐫 𝐟𝐨𝐫 𝐂𝐥𝐢𝐞𝐧𝐭𝐬:
• Scalable backend systems built with 𝐒𝐩𝐫𝐢𝐧𝐠 𝐁𝐨𝐨𝐭 & 𝐌𝐢𝐜𝐫𝐨𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬
• 𝐒𝐞𝐜𝐮𝐫𝐞 𝐚𝐮𝐭𝐡𝐞𝐧𝐭𝐢𝐜𝐚𝐭𝐢𝐨𝐧 & 𝐚𝐮𝐭𝐡𝐨𝐫𝐢𝐳𝐚𝐭𝐢𝐨𝐧 (JWT, OAuth2, Spring Security)
• 𝐇𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐀𝐏𝐈𝐬 (REST, GraphQL, gRPC)
• Custom 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐥𝐨𝐠𝐢𝐜, 𝐚𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧, 𝐚𝐧𝐝 𝐝𝐚𝐭𝐚 𝐰𝐨𝐫𝐤𝐟𝐥𝐨𝐰𝐬
• Web & mobile applications using 𝐑𝐞𝐚𝐜𝐭 & 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞
• 𝐂𝐈/𝐂𝐃 𝐩𝐢𝐩𝐞𝐥𝐢𝐧𝐞𝐬, 𝐭𝐞𝐬𝐭𝐢𝐧𝐠, 𝐚𝐧𝐝 𝐜𝐥𝐨𝐮𝐝 𝐝𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭𝐬
𝐏𝐫𝐨𝐯𝐞𝐧 𝐑𝐞𝐬𝐮𝐥𝐭𝐬:
Reduced API response time by 𝐮𝐩 𝐭𝐨 𝟒𝟎%
Built backend platforms serving 𝟓𝟎,𝟎𝟎𝟎+ 𝐚𝐜𝐭𝐢𝐯𝐞 𝐮𝐬𝐞𝐫𝐬
Designed systems handling 𝐡𝐢𝐠𝐡-𝐯𝐨𝐥𝐮𝐦𝐞 𝐭𝐫𝐚𝐧𝐬𝐚𝐜𝐭𝐢𝐨𝐧𝐬 with fault tolerance
Delivered 𝐬𝐭𝐚𝐛𝐥𝐞, 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧-𝐫𝐞𝐚𝐝𝐲 software for long-term growth
I’ve worked with startups and product teams where reliability, security, and scalability were critical not optional.
𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤:
𝐁𝐚𝐜𝐤𝐞𝐧𝐝: Java, Spring Boot, Spring Cloud, WebFlux, Spring Batch
𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: React, React Native, JavaScript
𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬: MySQL, MongoDB, Redis
𝐌𝐞𝐬𝐬𝐚𝐠𝐢𝐧𝐠 & 𝐀𝐏𝐈𝐬: Kafka, REST, GraphQL, gRPC
𝐃𝐞𝐯𝐎𝐩𝐬: Docker, Kubernetes, CI/CD
𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧: Python, Groovy
𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐌𝐞?
• Clean, maintainable code designed for𝐬𝐜𝐚𝐥𝐞 𝐚𝐧𝐝 𝐬𝐭𝐚𝐛𝐢𝐥𝐢𝐭𝐲
• 𝐂𝐥𝐞𝐚𝐫 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 and proactive problem-solving
• 𝐎𝐰𝐧𝐞𝐫𝐬𝐡𝐢𝐩 𝐦𝐢𝐧𝐝𝐬𝐞𝐭 I care about your results, not just tasks
• Systems built for 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐬𝐮𝐜𝐜𝐞𝐬𝐬, not short-term hacks
𝐋𝐞𝐭’𝐬 𝐛𝐮𝐢𝐥𝐝 𝐬𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞 𝐚𝐧𝐝 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞.
Send me a message and tell me about your project I’ll help you choose the best technical approach to make it succeed
Steps for completing your project
After purchasing the project, send requirements so osama can start the project.
Delivery time starts when osama receives requirements from you.
osama works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Analysis & Architecture Planning
Analyze existing architecture, understand payment flows, user roles, and expected transaction volumes to design a secure, scalable, and high-performance backend system.