Skip to content
View 4kamruzzaman's full-sized avatar
🎯
Focusing
🎯
Focusing

Block or report 4kamruzzaman

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
4kamruzzaman/README.md

Senior Full-Stack Engineer & SaaS Platform Architect at BizSafer

Engineering Resilient Systems That Are Safe To Scale.

I operate BizSafer, a specialized Production-First Engineering Lab. I focus on designing high-availability web architectures, robust full-stack applications, and lean container-native systems for platforms across North America, the United Kingdom, and Europe. I deliver industrial-grade reliability, sub-200ms edge latencies, and radical infrastructure cost reductions by bypassing bloated corporate cloud abstractions.

Most recently, I enforced architectural validation, zero-trust network perimeters, and secure edge data governance as a Lead Design Partner for enterprise cloud compliance layers, completing a clean corporate contract offboarding in June 2026.

📊 The Production-First Standard

  • >99.9% Service Availability: Engineering redundant, zero single point of failure server footprints.
  • <60s Mean Time to Resolution (MTTR): Deploying isolated environment parity and bulletproof error isolation.
  • Sub-200ms Global Edge Latencies: Maximizing smart origin protection, CDN matrices, and performance tuning from data layers to edge nodes.

🚀 Featured Enterprise Architectures

I maintain open-source reference blueprints proving the exact architectural performance and FinOps standards deployed to live production systems.

A secure enterprise file management SaaS demonstrating high-frequency payload routing and zero-egress cloud economics.

  • Live Production: r2upload.io
  • The FinOps Stack: Standalone Next.js edge environments, type-safe React/TypeScript components, Vite asset delivery, unified cleanly with a modern Laravel API core. Relational PostgreSQL persistence and stateful Redis clusters natively managed via Supervisord background queues.
  • Orchestration & Edge: 100% Docker container isolation, orchestrated seamlessly via Kamal 2 (kamal-proxy atomic traffic swapping) over cost-effective VPS (Hetzner, DigitalOcean) and AWS EC2 nodes. Fronted by Cloudflare R2 Vaults to permanently eliminate data transfer egress fees.

The high-performance, zero-downtime corporate infrastructure blueprint powering the BizSafer Engineering Lab.

  • Live Production: www.bizsafer.com
  • The Decoupled Stack: Fully decoupled monorepo architecture separating Next.js edge routing from a high-throughput modern Laravel API core.
  • Orchestration: Automated GitOps delivery via GitHub Actions continuous integration (CI/CD) pipelines pushing immutable Docker container states.

An enterprise-grade business operations platform engineered to govern complex manufacturing supply chains, interactive dashboards, and nationwide dealer lifecycles.

  • Live Production: maxon.com.bd | nova-bd.com | admin.nova-bd.com | warranty.nova-bd.com
  • The Architecture: Multi-tenant frontend nodes handling high-stakes business modules, backed by custom Cloudflare WAF perimeters and Layer 7 DDoS mitigation rules to deflect scrapers and safeguard backend processing domains.

🛠️ Technical Pillars and Lab Focus

Pillar Core Stack
Frontend Core Next.js, React, TypeScript, Vite, Responsive Tailwind UI
Backend Engineering Modern Laravel (PHP 8.4+), RESTful APIs, Domain-Driven Logic, Secure Tokens
Data & Caching Tier PostgreSQL, MySQL, Redis clusters, Supervisord background worker isolation
Lean Orchestration Docker container isolation, Kamal 2 (kamal-proxy multi-app routing)
Cloud & VPS Footprint AWS (EC2/S3), Bare-Metal/VPS Nodes (Hetzner, DigitalOcean)
Edge Network & FinOps Cloudflare Suite (WAF, Enterprise DNS, Global Load Balancers, R2 Zero-Egress Storage)
Automation & GitOps GitHub Actions CI/CD pipelines, automated static code analysis

🌐 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

  3. industrial-erp-architecture industrial-erp-architecture Public

    Industrial ERP & Warranty Management Architecture. Features a decoupled Next.js 16 edge node and Laravel 13 API core. Engineered for deterministic data tracking, strict B2B supply chain operations,…