# Muhammad Asadullah Nadeem — Systems Architect & Backend Developer

> Official canonical profile and machine-readable index for Muhammad Asadullah Nadeem, a specialized Backend Developer, Systems Architect, and DevOps Engineer based in India.
> Canonical URI: https://asadullah.website/
> Machine Manifest: https://asadullah.website/llms.txt | Full Corpus: https://asadullah.website/llms-full.txt

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## 1. Professional Overview

Muhammad Asadullah Nadeem is a Backend Developer, Systems Architect, and DevOps Engineer specializing in:
- High-throughput distributed systems and asynchronous event-driven architectures.
- Microservices engineering in Java (Spring Boot), Go (Golang), and Python (FastAPI).
- Cloud orchestration, automated CI/CD pipelines, Docker containerization, and Kubernetes clustering.
- High-performance relational and in-memory datastores (PostgreSQL tuning, Redis distributed caching, Kafka event streaming).

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## 2. Core Architectural Projects

### Lightweight Custom PHP Framework
- **Category:** System Framework & MVC Engine
- **Technologies:** PHP 8.2+, PostgreSQL, PDO, Composer, Clean Architecture
- **Repository:** https://github.com/Asadullah-nadeem
- **Highlights:** Zero external dependencies, reflection-cached DI container, strict parameterized query enforcement, 3x lower request overhead than typical heavy microframeworks.

### Distributed Transactional Outbox Event Mesh
- **Category:** Distributed Systems & Event Streaming
- **Technologies:** Java / Spring Boot, Apache Kafka, PostgreSQL, Docker, Debezium CDC
- **Repository:** https://github.com/Asadullah-nadeem
- **Highlights:** Guaranteed exactly-once processing semantics, elimination of dual-write race conditions, automated exponential-jitter DLQ retries, Redis-backed idempotent deduplication.

### Production Kubernetes Cluster IaC & GitOps Mesh
- **Category:** Cloud Infrastructure & DevOps
- **Technologies:** Kubernetes, Terraform, Helm, Docker, Prometheus, Istio
- **Repository:** https://github.com/Asadullah-nadeem
- **Highlights:** Custom latency-based Horizontal Pod Autoscaling (HPA), zero-trust NetworkPolicy boundaries, non-root hardened containers, automated canary deployments via Argo Rollouts.

### High-Throughput Async REST & gRPC Gateway
- **Category:** API Gateways & Network Services
- **Technologies:** Go, gRPC, Protocol Buffers, Redis, Docker
- **Repository:** https://github.com/Asadullah-nadeem
- **Highlights:** Sub-5ms p99 JWT verification, Redis token-bucket rate limiting, dynamic gRPC-to-JSON transcoding, real-time circuit-breaking health monitors.

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## 3. Technology Competencies

- **Languages:** Java (Spring Boot), Go (Golang), Python (FastAPI), Kotlin, TypeScript, Node.js, PHP, C / C++.
- **Databases & Caching:** PostgreSQL (PgBouncer, JSONB, GIN indexing), Redis (Streams, Redlock, sliding windows), MySQL, MongoDB, ScyllaDB.
- **Messaging & Streaming:** Apache Kafka, RabbitMQ, gRPC, Protocol Buffers.
- **DevOps & Cloud:** Kubernetes, Docker, Terraform, GitHub Actions, Linux administration, Prometheus, Grafana.

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## 4. Key Site Navigation & Endpoints

- **About & Disambiguation:** [https://asadullah.website/about](https://asadullah.website/about) (Markdown: [https://asadullah.website/about.md](https://asadullah.website/about.md))
- **Projects & Case Studies:** [https://asadullah.website/projects](https://asadullah.website/projects) (Markdown: [https://asadullah.website/projects.md](https://asadullah.website/projects.md))
- **System Design Lab:** [https://asadullah.website/systems](https://asadullah.website/systems) (Markdown: [https://asadullah.website/systems.md](https://asadullah.website/systems.md))
- **Technology Stack:** [https://asadullah.website/stack](https://asadullah.website/stack) (Markdown: [https://asadullah.website/stack.md](https://asadullah.website/stack.md))
- **Contact & Consultation:** [https://asadullah.website/contact](https://asadullah.website/contact) (Markdown: [https://asadullah.website/contact.md](https://asadullah.website/contact.md))
- **Privacy Policy:** [https://asadullah.website/privacy](https://asadullah.website/privacy) (Markdown: [https://asadullah.website/privacy.md](https://asadullah.website/privacy.md))
- **Machine Documentation:** [https://asadullah.website/llms.txt](https://asadullah.website/llms.txt) | [https://asadullah.website/llms-full.txt](https://asadullah.website/llms-full.txt)
- **Sitemap:** [https://asadullah.website/sitemap.xml](https://asadullah.website/sitemap.xml)

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## 5. Verified Identity & Contact

- **Legal Entity:** Muhammad Asadullah Nadeem (Asadullah Nadeem)
- **ORCID:** [0009-0004-9005-640X](https://orcid.org/0009-0004-9005-640X)
- **GitHub:** [https://github.com/Asadullah-nadeem](https://github.com/Asadullah-nadeem)
- **LinkedIn:** [https://linkedin.com/in/Asadullah-nadeem](https://linkedin.com/in/Asadullah-nadeem)
- **Email:** [asadullahn89@gmail.com](mailto:asadullahn89@gmail.com)
- **Location:** India (IN)