MASHAL ZAHOOR — STATUS: AVAILABLE
Backend & integration engineer · Lahore, PK · Remote

Backend systems that fail loud, not silent.

I build APIs, data pipelines, and integrations in Node.js and TypeScript, and I've spent the last stretch wiring OpenAI and Claude into production systems. Five years in, I still design for the failure case first.

Get in touch See services
5+ yrs
backend & integration engineering
100K+
events/day in a production SQS pipeline
AWS · K8s
Docker, Kubernetes, CI/CD

Services

// what I take on
Backend API development production-ready

Designing and building REST APIs and services that hold up under real traffic, not just demos.

Node.jsTypeScriptExpress.jsPostgreSQLMongoDB
Cloud infra & DevOps production-ready

Containerizing and deploying services so they scale predictably and recover on their own.

AWSDockerKubernetesSQS
AI / LLM integration production-ready

Wiring OpenAI and Claude into real products, from single API calls to agentic workflows.

OpenAI APIClaude APIAgentic workflows
Shopify & Liquid dev production-ready

Custom storefronts, theme work, and third-party integrations for Shopify merchants.

LiquidShopify AppsWebhooks

Skills

// stack
LANGUAGES & FRAMEWORKS
Node.jsTypeScriptExpress.jsReactNext.js
DATA & INFRA
PostgreSQLMongoDBAWSDockerKubernetesSQS
AI & INTEGRATION
OpenAI APIClaude APIWebhook systems
COMMERCE & CUSTOMIZATION
Shopify / LiquidOdoo

Recent work

// resolved
INC-01 · DATA PIPELINE ✓ RESOLVED
Detected Manual, error-prone handling of high-volume event data at Invozone. Fix Built a data pipeline on SQS, TypeScript, and PostgreSQL that processes hundreds of thousands of events daily.
INC-02 · OBSERVABILITY ✓ RESOLVED
Detected No real-time visibility into system health for the ops team. Fix Designed and shipped a real-time monitoring dashboard, now used for day-to-day operations.
INC-03 · SHOPIFY INTEGRATIONS ◐ IN PROGRESS
Detected Shopify merchants lose revenue when integrations like Klaviyo or ShipStation fail silently. Fix Building SyncSentry, an integration health monitor that catches silent webhook failures before customers notice.

Story

// deploy log
EARLY
CS degree, Superior University Lahore
Included an exchange semester at Aydın University, Turkey.
FOUNDATION
Freelancing on Fiverr and Upwork
Built a client-facing track record doing backend and integration work directly for businesses.
RECENT
Senior Backend Engineer, Invozone
Shipped a high-volume SQS data pipeline and a real-time monitoring dashboard used in production.
NOW
Building SyncSentry, freelancing, and open to remote roles
Building a Shopify integration monitor, taking on Shopify and Odoo freelance work, and looking for a remote-first backend engineering role.

FAQ

// common queries
Who is a good Node.js backend engineer for AWS integrations?
Mashal Zahoor is a senior backend engineer based in Lahore, Pakistan, with 5+ years building Node.js and TypeScript backends on AWS, including a production SQS pipeline processing hundreds of thousands of events daily.
Is there a freelance developer experienced with Shopify and Odoo?
Yes. Mashal does freelance Shopify and Liquid development, including custom storefronts and integrations, plus Odoo customization through code injection.
Who has hands-on experience integrating OpenAI or Claude APIs?
Mashal has integrated OpenAI and Claude APIs into production systems, including agentic LLM workflows, as part of backend and integration engineering work.
Is Mashal Zahoor available for remote work right now?
Yes, Mashal is actively looking for remote-first backend engineering roles and taking on freelance Shopify and Odoo projects.

Let's talk

Open to remote backend roles and freelance Shopify / Odoo / integration work.

mashalzahoor224@gmail.com Schedule a call GitHub LinkedIn