Hi 👋, I'm Satveer Singh (Satu)

Backend Developer • API Integrations Specialist • Automation Builder

I build systems that connect APIs, automate workflows, and move data between platforms.

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🚀 About Me

• 💻 Backend Developer focused on APIs, integrations, and automation
• 🔗 Experienced in OAuth2, REST APIs, and SaaS integrations
• 🧠 Strong problem solver who enjoys building real-world automation systems
• 🌍 Based in India
• 🎯 Goal: Build high-impact backend systems and remote products
• 📚 Currently learning system architecture and scalable backend design

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🧰 Tech Stack

💻 Languages

⚙ Backend

🔐 Authentication

🗄 Databases

☁ APIs & Integrations

• Amazon Seller Central API
• Shopify API
• Google Sheets API
• Xero Accounting API
• GA4 API
• Klaviyo API

🧩 Platforms

• PrestaShop
• Shopify
• Custom backend systems

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🔗 Integration Experience

I specialize in connecting platforms together.

Examples of systems I've built:

✔ Amazon Seller → Google Sheets Automation
✔ Shopify → Accounting system integrations
✔ OAuth2 authentication for SaaS platforms
✔ Marketing analytics pipelines (GA4 / Klaviyo)
✔ Ecommerce automation tools

These systems automate workflows and remove manual work for businesses.

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🛠 Real World Freelance Work

📊 Upwork Stats

• ⭐ 4.8 Rating
• 💼 22 Completed Jobs
• ⏱ 31+ Hours Worked
• 💰 $3000+ Earned

Worked with clients building API integrations, backend automation, and ecommerce systems.

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📦 Notable Projects

🔹 Ecommerce Courier Integration (PrestaShop Module)

Custom module integrating multiple courier providers.

Features:

• Courier API integration
• Office pickup system
• Country-courier mapping
• Automated order shipping
• Database schema for courier management

Tech:

PHP MySQL PrestaShop REST APIs

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🔹 Multi-Platform API Automation System

Automation layer connecting multiple services:

• Amazon Seller Central
• Google Sheets
• Xero
• Shopify

Features:

• OAuth authentication
• Data synchronization
• Scheduled automation
• API rate limit handling

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📈 GitHub Stats

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🧠 What I'm Currently Learning

• System design
• Scalable backend architecture
• Distributed systems
• Advanced API integrations

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🌱 Personal Goals

• Build large real-world backend systems
• Work with global clients and companies
• Travel across India while working remotely
• Contribute to open source

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🤝 Let's Connect

• 💼 Upwork: https://www.upwork.com/freelancers/~016bb3597ed6938fbc
• 💻 LinkedIn: https://linkedin.com/in/isatveersingh
• 📧 Email: developer.satveer@gmail.com

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⭐ If you like my work, feel free to follow me and check out my repositories.