CYBERSECURITY &
WEB DEVELOPER

Thieveshkar Kalaichelvan

Focused second-year Cybersecurity undergraduate with practical experience in network security, ethical hacking, and web development. Currently interning at Infinity Co., passionate about creating secure digital solutions.

1+ YEAR
EXPERIENCE
10 PROJECTS
COMPLETED
14 CERTIFICATES
EARNED
Certificates from Industry Leaders
Cisco
Fortinet
LinkedIn
CADD
APIIT
PMI

About Me

I'm a passionate second-year Cybersecurity undergraduate at APIIT (partnered with Staffordshire University UK) with practical experience from academic projects in network security, ethical hacking, and system hardening. I am currently working at Infinity Co., where I contribute to web development and security improvements.

Actively building knowledge of advanced cybersecurity techniques, including penetration testing, vulnerability assessment, and threat detection. I am skilled in network design, threat mitigation, and securing cloud infrastructure.

Professional Experience

Web Developer (Part-time)
Infinity Co. - Colombo, Sri Lanka
Apr 2025 – Present (Promoted from Intern)
  • Customized WordPress themes to enhance functionality and improve user experience
  • Developed responsive front-end features, including navigation menus and dynamic elements
  • Resolved technical issues with payment gateways and optimized checkout processes
  • Improved UI/UX for mobile platforms, ensuring seamless cross-device compatibility
  • Collaborated with an Agile team using Jira for task tracking and Slack for communication

Education

BSc (Hons) Cybersecurity

APIIT in partnership with Staffordshire University UK

Expected Graduation: December 2027

Current Status: Second Year, Second Semester

First-Year Results

Successfully completed all modules with eligibility to continue to the second year

GPA Equivalent: First Class (for most modules)

Related Coursework

First Year: Software Development, Web Development, Networking Concepts, Cyber Security, Digital Technologies

Second Year (Ongoing): Ethical Hacking, Cyber Operations, Network Security, Cyber Security, Commercial Computing

Leadership & Activities

APIIT Full Stack Computer Society

Participating Member (Mar 2024 – Present)

Greenhill International Kandy

Block Head (Jan 2020 – Dec 2022)

Matale International School

Senior Western Band Leader (2019)

Senior Prefect (2019)

My Skills

Cybersecurity

Network Security, Ethical Hacking, Vulnerability Assessment, Threat Detection, System Hardening

Programming

Python, JavaScript, C#, PHP, HTML, CSS, SQL, JSON

Web Development

WordPress, WooCommerce, Elementor, Responsive Design, UI/UX

Networking

Cisco Networking, Packet Tracer, VLAN Configuration, Routing Protocols, Network Design

Tools & Platforms

Kali Linux, Volatility, Splunk, LinPEAS, Metasploit/MSFVenom, AWS EC2, Google Authenticator PAM, OpenSSL, Hydra Nmap, hping3, SQLMap, Packet Tracer, Cisco Networking, GitHub, WordPress, Wix, Jira, Slack, Notion, cPanel, SQL Server

Design

Adobe Illustrator, Photoshop, Premiere Pro, Graphic Design, Layout Design

Featured Projects

Infinity Co. Website

E-Commerce Platform

Designed and developed a fully responsive e-commerce website using WordPress, Elementor, and WooCommerce.

WordPress PHP JavaScript WooCommerce
E-Police Lanka

E-Police Lanka Digital Services Platform

Developed a web platform modernizing Sri Lanka's police services with online complaints, appointments, and traffic fine payments.

React.js Node.js PostgreSQL Security
Offensive Security

Offensive Security Engineering & Forensics Portfolio

Achieved privilege escalation via kernel exploit and performed deep forensics with Volatility and Splunk.

Kali Linux Volatility Splunk Forensics
RootQuest CTF

RootQuest CTF Box: Multi-Stage Exploitation VM

Built a 10-challenge CTF VM across Web, Crypto, Network & Forensics with custom Apache/MySQL-Python services.

CTF VM Exploitation Cryptography
Threat Analysis

Cybersecurity Threat Analysis & Simulation Lab

Analyzed critical threats, defined protection protocols, and simulated attacks with defense validation.

Threat Analysis DDoS SQLi Firewall/IDS
Ethical Hacking

Ethical Hacking Portfolio

Discovered critical vulnerabilities and executed attack simulations with academic countermeasures.

Nessus Nmap Metasploit Forensics
Tech Gadgets Hub

Tech Gadgets Hub

Created a responsive website showcasing the latest tech gadgets with intuitive navigation and multimedia integration.

Wix Web Design Responsive UI
Python Portfolio

Python Portfolio

Developed a portfolio of Python programs including calculators, tax programs, and library management systems.

Python File Handling Data Manipulation
Network Infrastructure

Network Infrastructure

Designed a secure network for Campus ABC with VLAN segmentation, RIP routing, and HSRP for redundancy.

Network Design VLAN Cybersecurity
Groceries Supermarket

Groceries Supermarket

Developed a dynamic web application for a supermarket with product categories, order placement, and payment functionality.

HTML CSS JavaScript JSON

Certificates & Achievements

Introduction to Packet Tracer

Cisco Networking Academy
View Certificate

Introduction to Cyber Security

Cisco Networking Academy
View Certificate

Introduction to Threat Landscape 2.0

Fortinet
View Certificate

Python Essentials

Cisco Networking Academy
View Certificate

PHP Essentials

LinkedIn Learning
View Certificate

Product Management: Customer Development

LinkedIn Learning
View Certificate

Professional Networking

LinkedIn Learning
View Certificate

Project Management: Preventing Scope Creep

LinkedIn Learning
View Certificate

Managing Project Stakeholders

LinkedIn Learning
View Certificate

Cert Prep: PMI Agile Certified Practitioner (PMI-ACP)

LinkedIn Learning
View Certificate

Designathon Participation

Surge Global & APIIT
View Certificate

Diploma in Graphic Design

CADD
View Certificate