Musaddiq I.

Senior Full Stack Engineer | Meta API & Automation Expert

Most developers hand off the code and disappear. I'm the one who stays - monitoring it, fixing it, and making sure it keeps working at 2am. 7 years. 3,126 hours. $50,000+ earned. 100% Job Success Score. Every long-term client stayed for 12+ months. That's not luck - that's what happens when you treat every client's revenue like it's your own. I'm a Senior Full Stack Engineer with 7+ years of experience building revenue-critical web applications and API automation systems for clients across Australia, Italy, Thailand, and the United States. 💰 $50,000+ earned across long-term contracts ⏱ 3,126+ hours tracked on Upwork ✅ 100% Job Success Score | Top Rated Plus 📋 240+ recurring sprint tasks managed for one client My core specialty: → Meta Graph API & Meta Marketing API → Make automation - scenario design, optimization, maintenance, and monitoring → Facebook Lead Ads automation & webhook systems → Facebook never-expiring token workflows → Google Tag Manager (GTM) - full tag setup, custom triggers, variables, and container management → Google Ads Tracking - conversion tracking, remarketing tags, and audience pixel setup → Enhanced Conversions - server-side and browser-side implementation for Google Ads & Meta → Meta Pixel - event setup, custom conversions, and Conversions API (CAPI) integration → Google Ads API & Google My Business API → Freshsales CRM & WhatsApp Business API → Stripe API & Stripe Sigma financial reporting Full Stack Skills: → Back-End: PHP, Laravel, Node.js, Express, NestJS → Front-End: React, Vue.js, Angular, Next.js → Databases: MySQL, PostgreSQL, MongoDB, Redis → DevOps: AWS, CI/CD, GitHub Actions, LAMP stack → Automation: Make, Zapier, Discord Webhooks, Google Sheets API, Firebase, Twilio, Jibble I specialize in: ✔ Meta API & Facebook Graph API integration ✔ Make scenario architecture & optimization ✔ Google Tag Manager (GTM) setup & management ✔ Google Ads conversion tracking & remarketing ✔ Enhanced Conversions (Google & Meta) ✔ Meta Pixel & Conversions API (CAPI) setup ✔ Revenue monitoring & automation systems ✔ Freshsales CRM & WhatsApp Business API ✔ Stripe Sigma financial reporting & analytics ✔ Full stack Laravel & Vue.js web applications ✔ SaaS, CRM, POS & e-commerce platforms ✔ REST API development & third-party integrations ✔ Facebook Lead Ads automation & webhook systems ✔ Token management & never-expiring access workflows ✔ Agile project management & sprint delivery I work best with clients who have real business problems - broken automations, leaking lead flows, disconnected APIs - and need a senior engineer who takes full ownership without constant supervision. 100% Job Success | Top Rated Plus | 7+ Years | 3,126+ Hours | Available Now