Backend · DevOps · Security

Shahriar Hussain

Security-Focused
Backend Engineer

I design and deploy secure, scalable backend systems with automation-driven infrastructure and production-grade reliability.

What I Work With

Backend

Designing production-grade APIs, services, and data layers with security-first architecture.

  • Python & FastAPI
  • Django & REST Framework
  • PostgreSQL & Redis
  • Celery & Task Queues
  • GraphQL & gRPC
  • OAuth2 & JWT Auth

DevOps

Automating infrastructure, deployments, and observability for reliable production systems.

  • Docker & Kubernetes
  • Terraform & Ansible
  • CI/CD Pipelines
  • GitHub Actions & GitLab CI
  • Prometheus & Grafana
  • Linux Administration

Security

Embedding security into every layer — from code review to runtime monitoring.

  • OWASP Top 10 Mitigation
  • SAST & DAST Scanning
  • Secrets Management
  • IAM & Zero-Trust
  • Container Security
  • Compliance & Auditing

Projects

Prosno.io — Question Paper Platform

Full-stack SaaS application for automated question paper generation with auth, credit systems, and document export.

Python Flask PostgreSQL Supabase Auth Render
  • Built full authentication flow with Google OAuth2 and session management via Supabase
  • Implemented credit-based rate limiting system with tiered access control
  • Automated DOCX and PDF generation pipeline with OMR sheet support
  • Deployed on Render with CI/CD pipeline and environment-based configuration

Automated Question Generation Script

Python-based CLI tool for extracting and generating structured question sets from text content using NLP techniques.

Python NLP CLI JSON Schema
  • Designed structured JSON output format for consistent downstream consumption
  • Implemented modular parsing pipeline with extensible question type support
  • Reduced manual question creation time by automating extraction from raw text

Forex Lot Size Calculator

Precision risk management tool for calculating optimal position sizes in Forex trading based on configurable parameters.

Python Financial Modeling CLI
  • Implemented risk-based position sizing with configurable account balance and risk tolerance
  • Supports multiple currency pairs with accurate pip value calculations
  • Designed for reliability with input validation and edge case handling

Engineering with a Security Mindset

I approach backend engineering from a security-first perspective. Every system I build starts with threat modeling — identifying attack surfaces, enforcing least-privilege access, and ensuring data integrity at every layer. Security is not an afterthought; it is the foundation of reliable architecture.

My work sits at the intersection of backend development, infrastructure automation, and operational security. I build APIs that handle production traffic with predictable performance, deploy infrastructure through code that can be audited and versioned, and integrate security scanning into CI/CD pipelines so vulnerabilities are caught before they reach production.

I believe in automation over manual process. From infrastructure provisioning with Terraform to automated compliance checks and container scanning, I eliminate human error by codifying operational procedures. This approach reduces incident response time and ensures consistent, reproducible deployments across environments.

Whether it is hardening a Kubernetes cluster, implementing zero-trust networking, or designing rate-limited API gateways — I build systems that are secure by default, observable in production, and resilient under load.

Focus Areas

  • Secure API Design
  • Infrastructure as Code
  • CI/CD Security
  • Container Hardening
  • Production Observability

Currently

  • Open for DevSecOps & Backend roles
  • Building production systems in Python
  • Writing at shahariar.iam.bd/blog

Blog

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Ecosystem

shahriar@ecosystem:~$ ./ecosystem.sh
$ cat ecosystem.log
status: balanced
uptime: continuous
organisms: interdependent
health_check: passing
entropy: managed
resilience: adaptive
// A stable ecosystem — like reliable infrastructure —
// is quiet when it works.
$ terraform apply ecosystem.tf
Apply complete. Stability achieved.

Get in Touch

Interested in working together or have a question about my work? Reach out through any of the channels below.

GitHub
LinkedIn
Status
Open for opportunities