SecurityDec 2025• 12 min
Zero Trust Architecture: A Practical Implementation Guide
Moving beyond perimeter security to implement true zero-trust principles in modern cloud environments.
Hi, I'm
Prasun Chakraborty
>
I build secure, scalable systems at the intersection of cybersecurity, cloud architecture, and artificial intelligence. Research-driven. Production-hardened.
10+
Years Experience
50+
Systems Secured
1M+
Lines of Code
scroll
01.
About Me
A decade of building systems that need to work and need to be secure.
~/about/whoami
$ cat philosophy.md
▸Security is not a feature—it's a foundation.
▸Good architecture is invisible. Bad architecture is unforgettable.
▸The best code is no code. The second best is simple code.
▸Research today becomes production tomorrow.
My Approach
I bridge the gap between cutting-edge research and production systems. Whether it's implementing a novel authentication protocol, designing a microservices mesh, or training a custom ML model—I believe in understanding the "why" before the "how." This research-first mentality has helped me prevent costly mistakes and deliver solutions that stand the test of time.
Journey
2020 - Present
Senior Software Architect
Leading architecture decisions for distributed systems, implementing zero-trust security models, and driving cloud-native transformations.
2018 - 2020
Security Engineer
Conducted penetration testing, vulnerability assessments, and built secure CI/CD pipelines with automated security scanning.
2016 - 2021
Full Stack Developer
Built scalable web applications, microservices architectures, and real-time data processing systems.
02.
Areas of Expertise
Specialized in building secure, scalable systems across multiple domains.
Cybersecurity
Application security, penetration testing, threat modeling, and zero-trust architectures. Building systems that are secure by design.
Threat ModelingPenetration TestingOWASPSecurity AuditsCryptography
Cloud Architecture
Designing and implementing scalable, resilient cloud infrastructure across AWS, GCP, and Azure with Infrastructure as Code.
AWSGCPTerraformKubernetesService Mesh
AI & Machine Learning
Practical AI/ML applications including LLM integration, RAG systems, and custom model training for security use cases.
LLM IntegrationRAG SystemsPyTorchML SecurityNLP
Full Stack Development
End-to-end application development with modern frameworks, from database design to responsive frontends.
TypeScriptReact/Next.jsNode.jsPythonPostgreSQL
Technology Stack
TypeScript
Python
Rust
Kubernetes
Terraform
PostgreSQL
Redis
GraphQL
Docker
AWS
GCP
OAuth/OIDC
Looking for a Fractional CTO or Technical Architect?
Let's discuss your project03.
Research & Writing
Thoughts on security, architecture, and the intersection of AI with secure systems.
AI + SecurityNov 2025• 15 min
Building Secure RAG Systems: Lessons from Production
Security considerations when implementing Retrieval-Augmented Generation systems with sensitive data.
CloudOct 2025• 18 min
Kubernetes Security Hardening: Beyond the Defaults
A deep dive into securing Kubernetes clusters with pod security policies, network policies, and runtime protection.
ArchitectureSep 2025• 10 min
The Architecture of Secure-by-Design Systems
How to embed security into system design from day one, rather than bolting it on later.
04.
Get In Touch
Have a challenging technical problem? Let's explore how I can help.
~/contact/info
$ cat consulting_services.txt
▸Fractional CTO / Technical Leadership
▸Security Architecture Review
▸Cloud Migration Strategy
▸AI/ML System Design
▸Technical Due Diligence
Email
hello@prasunchakra.dev
Location
Remote-first • Available Globally