Wali yar Khan

About Me

I like working where software meets infrastructure — building systems that are fast, reliable, and secure. Most of my work revolves around backend development, cloud automation, and securing applications from the ground up.

I’ve been diving into network security, cloud architecture, and application hardening — exploring how real-world attacks unfold and how to design systems that can withstand them. I enjoy understanding how things actually work under the hood and then using that knowledge to design cleaner, more efficient solutions.

I’m currently focusing on cloud security — building tools, testing environments, and learning how to make systems resilient against modern threats. I care about writing code that performs well, scales easily, and stays secure in production.

Skills

Java Python Go Springboot Django Flask MongoDB PostgreSQL MySQL Git CI/CD Docker Terraform Zap Burpsuite Splunk Nessus Maltego Selenium Wireshark

const developer = {
name: 'Wali Yar Khan',
role: 'Computer Science Student',
passion: 'Expanding skills and discovering new ways to innovate'
};

Projects

Car Workshop Website

Full-stack web development with React and Django

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Honeypot

Machine deployed on AWS EC2 instance acts as high interaction honeypot

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AWS Meta Crawler

A fast, asynchronous Python tool that recursively crawls AWS EC2 instance metadata via SSRF using aiohttp

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Resume

Experience

Arittek Solutions Pvt Limited (Befiler)

Backend Developer Intern

Java, Spring boot, Postman, MySQL

Developed and secured RESTful APIs using Spring Boot and JWT based authentication, enabling role-based access control and OTP verification.

Integrated third-party APIs with WebClient, improving service efficiency and reducing average response latency.

Optimized query handling with DTOs and projections, cutting API response time and enhancing data consistency.

Implemented Spring AOP (Aspect-Oriented Programming) for cross-cutting concerns such as logging, exception handling, and performance metrics across microservices.

Configured Spring Scheduler and Async processing to handle background jobs and concurrent tasks.

Car Workshop (Detailing Hub)

Freelancer

React, Django, PostgreSQL, Docker, AWS

Delivered a full-stack cloud-hosted web app deployed on AWS (EC2 + RDS) reducing client operational downtime via automated monitoring (CloudWatch).

Design two separated APIs – one for customer-facing operations and another for admin management – enabling full workshop control (appointment, inventory, and staff) with secure access policies.

Secured authentication flow using AWS Cognito + Lambda triggers, and mitigated token exposure via HTTPOnly cookies.

Automated CI/CD with GitHub Actions for automated deployment.

Implemented TLS with AWS Certificate Manager and distributed static assets through S3 + CloudFront + Route53, ensuring high availability and global reach.

Optimized backend queries using serializers to fetch only required fields, reducing overhead and improving response time.