Sagar KC
Full Stack and Security Engineer

Building resilient products with Laravel, Node.js, TypeScript, Vue.js, Livewire, and AI

I am Sagar KC, a full stack developer focused on scalable business systems, modern user experiences, and production-grade security. My work spans ERP, CRM, education platforms, travel platforms, API-first development, and threat-resistant architectures.

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Professional Summary

Full stack developer delivering production systems with strong backend architecture, practical frontend delivery, and layered security operations. Skilled in Laravel, Node.js, TypeScript, Vue.js, Livewire, REST APIs, AI integration, multi-language systems, and cloud-ready deployment patterns.

Current Focus

  • Contract full stack engineering with measurable business outcomes.
  • Security hardening from middleware to server controls.
  • Performance-focused architecture using caching, queueing, and optimized queries.
  • AI-supported product capabilities and smarter operational workflows.

Recent Certifications

  • Ethical Hacking Essentials (EC-Council)
  • AWS CI/CD Pipelines and Deployment Strategies (Whizlabs)
  • Fundamentals of VueJS (Board Infinity)
  • Introduction to Generative AI (Google Cloud Skills Boost)
  • Graph Analytics for Big Data (UC San Diego)

Skill Architecture

Structured by delivery capability so clients can quickly understand where I add the most value.

Core Stack

Laravel Node.js TypeScript Vue.js Livewire JavaScript PHP REST API

Data, Infra and Delivery

MySQL Redis WebSockets Nginx Docker AWS Azure CI/CD

Advanced and Applied

AI Integration Security Engineering CRM and ERP Payment Gateways Multi Currency Multi Language Role-Based Access System Auditing

Professional Experience

A concise timeline of role impact across product engineering, full stack delivery, and platform stability.

Jul 2021 - Present

Full Stack Developer

KaterBlue Ltd. · Contract · Remote

LaravelVue.jsLivewireREST APIMicroservices
Mar 2019 - Mar 2021

Full Stack Developer

Threadscript · Full-time · Hybrid, Kathmandu

LaravelNode.jsTypeScriptVue.jsLivewire
Feb 2018 - Feb 2024

Information Technology Specialist

Eminent Educational Institut · Part-time

DeploymentAPIsLaravelVue.js
Mar 2017 - Oct 2019

PHP Web Developer

Genius IT Solutions · Full-time · Australia

LaravelUI/UXDeployment

Security Engineering Highlights

Date: 2 Jan 2026. Security hardening initiative designed and implemented by Sagar KC across application and server layers.

DetectBotnet Middleware BlocksBadVisitors Middleware SecureHeaders Middleware Akaunting Firewall Rate Throttling Bot and Attack Detection Session Invalidation by App Key Rotation Activity Logging and Alert Emails Query Abuse Prevention Error Surface Optimization
  1. Implemented botnet detection and bad visitor blocking with middleware-level controls.
  2. Applied strict request throttling per IP and automated temporary blocking logic.
  3. Enforced secure headers and hardened response behavior across request classes.
  4. Integrated Akaunting firewall middleware for bot, SQLi, XSS, swear, session, and referrer checks.
  5. Reduced resource waste by simplifying error pages and base layout dependencies.
  6. Enabled user behavior logging with alert emails for suspicious events and IP changes.
  7. Blocked simultaneous language and currency switch query abuse patterns.
  8. Aligned server protections with mod_evasive, mod_security (OWASP), Fail2Ban, and bad bot blockers.
  9. Configured cache strategy per environment with Redis on Cerulean and file cache on Clinical.
  10. Applied practical security posture: risk reduction, rapid detection, and operational response readiness.

Selected Projects

Representative systems from travel, education, enterprise operations, and real-time applications.

Multi Vendor Travel and Tours System

Built with Laravel, Vue.js, MySQL, internal wallet package, flight APIs, encrypted payment flows, and optimized Nginx delivery.

Consultancy Student Management System

Full stack education platform with student and agent workflows, real-time notifications, conversion tracking, and communication tools.

CRM and ERP System

Enterprise modules for employees, payroll, billing, RBAC, notifications, queue processing, and scalable operational workflows.

Multiple CMS and Quiz Web Applications

Livewire-powered CMS and interactive quiz products with websocket updates, caching optimization, and secure communication features.

Education and Credentials

Education

Master's Degree, MITKuala Lumpur University of Science and Technology · Jan 2025 - Present
Bachelor's Degree, BSCITSikkim Manipal University - Distance Education · Feb 2014 - Dec 2017
GNIIT, Computer Software EngineeringNational Institute of Information Technology · 2015 - 2020

Licenses and Certifications

Ethical Hacking Essentials (EHE)EC-Council · Credential ID: ZPRZFMZLNP3Z
AWS CI/CD Pipelines and Deployment StrategiesWhizlabs · Credential ID: S2ZHMDU5UB1W
Fundamentals of VueJSBoard Infinity · Credential ID: EO2PTD42MII9
Introduction to Generative AIGoogle Cloud Skills Boost · Credential ID: S90JJZYLLUFQ

Contact

Open to contract, long-term engineering roles, and security-focused consulting opportunities.

Let us build something strong and secure

I focus on maintainable architecture, measurable performance, and systems that hold up under real traffic and real threats.

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