Sfoglia categorie
Esplora
Fiverr Pro
Italiano
$
USD
Syed Ali Zafar
@syed_alizafar
Senior Backend Engineer APIs, Webhooks and SaaS Reliability
Pakistan
Inglese, Urdu, Hindi
Chi sono
I help SaaS teams diagnose and repair APIs, payments, authentication, data workflows, background jobs, and production failures.
My core stack includes TypeScript, JavaScript, Node.js, NestJS, Express, Next.js, PostgreSQL, Supabase, Stripe, AWS, and Docker.
I’m comfortable working in inherited codebases, tracing issues across logs and services, and delivering focused changes with tests, useful logging, and a clear handoff. I have worked on healthcare integrations, scientific-data workflows, fintech event processing, and compliance systems. I personally scope and deliver every project.
Competenze
Syed Ali Zafar
offline •
Consulta i miei servizi
API e integrazioni
I will fix webhook failures in your nodejs saas
Sviluppo di chatbot IA
I will fix rag chatbot errors and unreliable answers in your saas
Portfolio
Esperienza lavorativa
Senior Backend Developer | Node.js, NestJS, TypeScript, AWS
Upwork • Lavoratore autonomo
Aug 2025 - Present • 1 yr
built and stabilize Node.js/NestJS backends for SaaS products APIs, payments, authentication, webhooks, queues and PostgreSQL workflows. My recent work From Upwork includes healthcare data pipelines and multi tenant compliance systems.
