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4kamruzzaman/README.md

Senior SRE and Lead Architect

Global Remote at BizSafer

Engineering Resilient Systems That Are Safe To Scale.

I operate BizSafer, a specialized Production-First Engineering Lab anchored in New York. I focus on high-availability infrastructure for platforms in North America, the United Kingdom, and Europe, delivering industrial-grade reliability through the SRE Standard.


πŸ“Š The SRE Standard

  • >99.9% Uptime Target: Engineering zero single point of failure architectures.
  • <60s MTTR: Implementing automated self-healing loops and disaster recovery protocols.
  • Sub-200ms Latency: Optimizing the global routing from database persistence to edge delivery.

πŸš€ Featured Enterprise Architecture: R2Upload

R2Upload is a secure enterprise file management SaaS engineered by the BizSafer Lab to demonstrate Tier-1 deployment standards.

  • Live Production Environment: r2upload.io
  • Open-Source Whitepaper: r2upload-architecture
  • The Stack: Next.js 16 edge nodes, Laravel 12 API core, PostgreSQL 16 persistence, and Redis 8 asynchronous queues.
  • Orchestration: 100% Dockerized environments deployed via Kamal 2 for atomic, zero-downtime traffic swapping.

πŸ—οΈ Technical Pillars and Lab Focus

Pillar Core Stack
Infrastructure as Code Terraform, OpenTofu, Ansible
Orchestration and Scaling Kubernetes, Docker, Kamal 2
Cloud and Edge Security AWS, GCP, Azure, Cloudflare WAF, Nginx
Observability Prometheus, Grafana, ELK Stack
Application Cores Laravel, Next.js, Node.js, PostgreSQL, MySQL, Redis

🌐 Connect and Audit


"We do not just build software. We engineer resilient systems."

Pinned Loading

  1. r2upload-architecture r2upload-architecture Public

    High-availability SaaS infrastructure architecture for R2Upload. Features a fully decoupled, container-native stack orchestrated via Kamal 2 with zero-downtime CI/CD pipelines, guaranteeing >99.9% …

    Mermaid 1

  2. bizsafer-backend-core bizsafer-backend-core Public

    Production-grade API Core infrastructure for BizSafer, documented as a functional blueprint for industrial reliability. Built on a 'Production-First' mindset featuring self-healing CI/CD pipelines,…

    Dockerfile

  3. bizsafer-frontend-core bizsafer-frontend-core Public

    High-performance Edge Delivery architecture for BizSafer optimized for sub-second Core Web Vitals and industrial-grade security. Demonstrates 60% image optimization through multi-stage Docker build…

    Dockerfile