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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. Concurrently, I serve as a Lead Design Partner for CloudWise, architecting Air-Gapped Zero-Trust environments for enterprise FinOps.


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 Architectures

I maintain open-source reference blueprints proving the exact SRE and FinOps standards we deploy to production.

1. R2Upload (V2 Enterprise SaaS Refactor) R2Upload is a secure enterprise file management SaaS demonstrating Tier-1 payload routing and zero-egress cloud economics.

  • Live Production: r2upload.io
  • Open-Source Blueprint: r2upload-architecture
  • The FinOps Stack: Next.js 16 standalone edge nodes, Laravel 12 API core utilizing Supervisord to natively manage internal Redis workers, PostgreSQL 16 persistence, and strictly isolated Cloudflare R2 Storage Vaults.
  • Orchestration: Kamal 2 executing atomic, zero-downtime traffic swapping via kamal-proxy.

2. BizSafer Global (Corporate Perimeter) The zero-downtime corporate infrastructure blueprint for the BizSafer Engineering Lab.

  • Live Production: www.bizsafer.com
  • Open-Source Blueprint: bizsafer-corporate-architecture
  • The Decoupled Stack: Fully decoupled monorepo isolating Next.js 16 edge delivery from the Laravel 13 API core.
  • Orchestration: 100% Dockerized automated GitOps pipelines enforcing strict static analysis before deployment.

πŸ› οΈ Technical Pillars and Lab Focus

Pillar Core Stack
Cloud Compliance & Zero-Trust Air-Gapped Architecture, Deterministic Hashing, AWS CUR 2.0
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

    V2 Enterprise Refactor: High-availability SaaS architecture for R2Upload. Features a decoupled Next.js edge and Laravel 12 API core. Engineered for Zero-Egress cloud economics utilizing Cloudflare …

    Dockerfile 5

  2. bizsafer-corporate-architecture bizsafer-corporate-architecture Public

    The zero-downtime corporate infrastructure blueprint for the BizSafer Global Engineering Lab. >99.9% Uptime | Next.js 16 | Laravel 13 | Kamal 2.

    Dockerfile