🎓 Senior Backend Engineer | Python, APIs, AWS, Automation, Serverless & AI-Assisted Systems 💻 Passionate about building scalable, cloud-ready backend systems that turn complex workflows into reliable, maintainable solutions. 🌍 Based in Pakistan | Open to global remote opportunities
I’m a Senior Backend Engineer with 6+ years of experience designing and owning scalable backend systems, APIs, automation pipelines, and cloud-ready architectures across e-commerce, SaaS, fintech-adjacent, and operations-heavy environments.
My work focuses on translating complex business workflows into reliable backend systems — from payment gateways and IVR integrations to serverless OCR pipelines, AI-assisted automation, and high-volume data processing systems.
I’ve delivered multiple production systems end-to-end, often owning architecture, implementation, deployment, and long-term maintainability.
- Backend Engineering: Python, Flask, FastAPI, REST APIs, background workers, secure authentication, rate limiting, API hardening
- Automation & Data Pipelines: Event-driven workflows, CSV/JSON ingestion, OCR pipelines, business process automation, n8n
- Cloud & Serverless: AWS Lambda, S3, Firebase Functions, cloud-ready & vendor-agnostic system design
- Integrations: Shopify APIs, webhooks, payment gateways, IVR platforms, internal tooling
- AI-Assisted Backend Systems: OCR, NLP pipelines, semantic search, computer-vision-backed workflows
- System Design: Scalability, reliability, observability, extensibility, long-term maintainability
- Favor simple, explicit architectures over premature complexity
- Design APIs and workflows for operational clarity and debuggability
- Build systems that scale predictably, not just theoretically
- Strong emphasis on observability, failure handling, and graceful degradation
- Prefer automation and tooling to reduce human error in operations
A curated selection of production-grade backend, automation, and AI-assisted systems I’ve designed and built across fintech, e-commerce, SaaS, and operations-heavy environments.
| 🚀 Project | 🧩 Problem Solved & Scope | 🛠️ Tech & Keywords |
|---|---|---|
| 💳Custom Payment Gateway & Multi-Channel Payout Engine | Designed and implemented a full2D payment gatewaywith transaction lifecycle management, internal ledgers, reconciliation, andautomated payoutsacross multiple channels. Built for reliability, auditability, and fintech-scale extensibility. | Python · Flask · REST APIs · Payment Processing · Ledger Systems · Webhooks · AWS |
| 📊🤖AI-Powered Dashboard Understanding & Business Intent Detection (VL-JEPA Inspired) | Built an AI-assisted backend system tointerpret business dashboards , detect user intent, and extract actionable insights from structured and semi-structured data for executive analytics and automation triggers. | Python · NLP · Embeddings · AI Pipelines · Backend APIs · Data Understanding |
| 🧾☁️Serverless Receipt & Document Processing Pipeline (OCR + AWS Lambda) | Designed a fullyevent-driven serverless OCR pipelineto ingest, process, normalize, and store document data at scale using cloud-native patterns. | Python · AWS Lambda · S3 · OCR · FastAPI · Event-Driven Architecture |
| 🛒📈AI-Powered Shopify Order Processing & Operational Insights | Automated Shopify order ingestion, enrichment, reconciliation, and reporting while layeringAI-driven insightsfor sales and operational analytics. | Python · Shopify API · Pandas · AWS · Automation · Data Pipelines |
| 📚🔍AI-Powered Internal Knowledge Base & Semantic Search Engine | Built an internal knowledge system withsemantic search , document ingestion, contextual retrieval, and relevance ranking to improve team productivity. | Python · NLP · Vector Search · Semantic Indexing · Backend Systems |
| 🎯🤖AI-Assisted Lead Qualification & Scoring Automation | Designed backend automation toscore, qualify, and route leadsusing behavioral signals and AI-assisted classification, improving conversion efficiency. | Python · Automation · AI Scoring · APIs · Workflow Engines |
| 💰🔁Payment Gateway & Subscription Integration for Marketplaces | Integrated card payments and subscription billing into marketplace platforms with recurring charges, webhook handling, retries, and failure recovery. | Python · Flask · Payment APIs · Subscriptions · Webhooks |
| ⚡🔐FastAPI REST API Boilerplate (JWT, PostgreSQL, Docker) | Created a production-readyFastAPI backend boilerplatefeaturing JWT authentication, RBAC, PostgreSQL, Dockerized deployments, and clean architecture. | FastAPI · Python · PostgreSQL · JWT · Docker · REST APIs |
| 🛡️⚙️Flask API Hardening & Performance Optimization | Hardened production Flask APIs usingrate limiting, auth enforcement, performance tuning , structured logging, and monitoring. | Python · Flask · Security · Performance · Observability |
| 🤖🚫Anti-Bot & Lead Quality Automation for E-commerce | Built backend systems to detect bots, filter low-quality leads, and protect funnels using heuristics, automation, and validation pipelines. | Python · Automation · Anti-Bot · APIs · Data Validation |
| ☎️🛒IVR System Integration with Shopify & E-Commerce Backends | Integrated IVR platforms with backend order systems to enablephone-based order lookup and managementfor e-commerce operations. | Python · IVR · Twilio · Shopify API · Backend Integrations |
| 🔄📦CRM & Order Sync Automation for Logistics Platforms | Automated synchronization between CRMs, order systems, and logistics tools to reduce data inconsistency and operational friction. | Python · APIs · Automation · Webhooks · Data Sync |
| ✉️📤Bulk Email & Notification Automation (CSV-Driven) | Built scalable bulk email systems withdynamic templating , CSV ingestion, background workers, and delivery tracking. | Python · SMTP · AWS SES · Automation · Background Workers |
| 🖥️📊E-commerce Admin Dashboard Backend (MERN Stack) | Developed backend services supporting real-time analytics, admin workflows, and data management for e-commerce dashboards. | Node.js · MongoDB · REST APIs · Real-Time Data |
| 🏺🔍Ancient Script Deciphering using AI & OCR | Experimental AI-backed system for digitizing and interpreting ancient scripts using OCR and pattern recognition pipelines. | Python · OCR · Computer Vision · AI Pipelines |
| 🎯📐6D Object Pose Estimation (EfficientPose) | Computer vision system for estimating object pose in industrial and research-oriented scenarios. | Python · Computer Vision · Deep Learning |
| 🤖🚀Android Build Pipeline Modernization & CI/CD Automation | Modernized Android build and release pipelines to improve reliability, speed, and deployment consistency. | CI/CD · Automation · Build Systems |
| ⚡🛍️Shopify Performance & Core Web Vitals Optimization | Improved storefront performance, backend responsiveness, and SEO metrics to enhance conversion rates. | Shopify · Performance · Core Web Vitals |
| 💬📦WhatsApp Order Notification Plugin for WooCommerce | Implemented backend logic for real-time WhatsApp notifications tied to WooCommerce order lifecycle events. | APIs · Webhooks · E-commerce |
| 🧱🌱Early Freelance Backend Systems & Integrations | Designed custom backend utilities, integrations, and UI infrastructure during early freelance work, forming strong system fundamentals. | Backend Fundamentals · APIs · Systems Design |
Languages & Frameworks: Python, Flask, FastAPI, REST APIs, Celery Cloud & Serverless: AWS Lambda, S3, Firebase Functions, Serverless Architectures Automation & Pipelines: Event-driven workflows, CSV/JSON ingestion, OCR pipelines, AI-assisted automation Integrations & Tools: Shopify APIs, Webhooks, Payment Gateways, IVR Platforms System Design & Observability: Reliability, Scalability, Extensibility, Monitoring, Logging
- Designing cloud-native and serverless backend systems for high-volume workflows
- Building AI-assisted automation pipelines that reduce operational overhead
- Strengthening system design patterns for reliability, maintainability, and scale
- Integrating modern APIs and SaaS platforms into clean backend architectures
Roles: Senior Backend Engineer · Backend Engineer · Python Engineer · API / Automation Engineer Work Type: Remote · Contract · Long-term · Async-friendly
📫 Email: abq2904@gmail.com 🔗 LinkedIn: linkedin.com/in/abq290 🔗 GitHub: github.com/abq2904