Abdul S.
Backend & API Developer | Stripe, PayPal, Webhooks, Automation
I build **scalable web applications and high-performance APIs** that help businesses automate operations, integrate systems, and grow faster. With 14+ years of experience, I specialize in **PHP/MySQL, backend systems, and API integrations**—from simple third-party connections to complex, custom-built platforms. 💡 What I can help you with: 🚀 Custom Web Applications (CRM, CMS, SaaS platforms) 🚀 REST APIs & Third-Party Integrations (Stripe, Google, AWS, etc.) 🚀 System Automation & Data Processing 🚀 Backend Architecture for scalable and secure systems I’ve worked with startups and enterprises, delivering solutions like: ✔ Complex power system simulation software (Singapore-based engineering firm) ✔ Large-scale real estate platform managing 25+ modules with a team of 9 developers ✔ Business systems for inventory, POS, accounting, and supply chain management I don’t just write code—I **analyze problems, design efficient systems, and deliver reliable solutions** that run smoothly at scale. If you need a developer who understands both **technology and business logic**, let’s talk.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $2.2k
Billed in all: $344,571$345k
$1.1k in the last 6 months
Across 99 contracts
Earnings, last 30 days
Skill rankings: Top 17% in MySQL
Ranked by MRR among everyone on Upwork with the skill.
- Custom Business Solutions NorthStar11 freelancers · 🇵🇰 #1Top 18%🇵🇰#1 of 4
- #6Mathematical Software17 freelancers · 🇵🇰 #3Top 35%🇵🇰#3 of 7
- #12Statistical Programming64 freelancers · 🇵🇰 #1Top 19%🇵🇰#1 of 5
- #28Process Integration100 freelancers · 🇵🇰 #3Top 28%🇵🇰#3 of 10
- #54PayPal Integration301 freelancers · 🇵🇰 #11Top 18%🇵🇰#11 of 65
- #149Web API670 freelancers · 🇵🇰 #26Top 22%🇵🇰#26 of 149
- #191Stripe API698 freelancers · 🇵🇰 #62Top 27%🇵🇰#62 of 213
- #210Custom PHP1,134 freelancers · 🇵🇰 #47Top 19%🇵🇰#47 of 252