Headline

Penetration Tester at TCS Hyderabad | Application Security | Offensive Security

About

I’m Raghav, a penetration testing and application security enthusiast from Raipur (Chhattisgarh, India), currently based in Hyderabad (Telangana, India). I work as an Assistant System Engineer – Trainee at TCS, where I focus on security testing and continuous learning. My curiosity started with a simple question: “What happens when a hacker knocks on the door?” That led me into offensive security, where I enjoy understanding systems deeply and finding weaknesses before attackers do. When I’m not hunting vulnerabilities, I love spending time in nature because it reminds me that everything has a pattern, and understanding patterns is the key to both life and cybersecurity. I solve real-world security challenges through hands-on labs, CTFs, and continuous learning. I believe in staying grounded through nature, discipline, and self-awareness because the best security starts with understanding yourself. Interests: Penetration Testing · Offensive Security · Application Security · Linux · Security Research Goal: Build stronger defenses through ethical hacking and security research.

Location

Hyderabad

AI stack

antigravity

gemini

ollama

openai

perplexity

Microsoft Copilot

Work experience

Penetration Tester at Tata Consultancy Services, Jun 2025 - Present · 1 yr 4 mos, On-site, - Analyzed root causes of common vulnerability patterns to recommend systemic fixes. - Identified and exploited vulnerabilities in web, android, thick-client applications, browser extensions and AI agents demonstrating real-world attacker impact. - Developed proof-of-concept exploits to validate exploitability, enabling faster remediation security flaws by engineering teams. - Performed manual testing beyond automated scanners, uncovering logic flaws, abuse cases, and insecure client-side trust assumptions. - Reverse engineered Android and thick-client applications to identify insecure data handling, hardcoded secrets, and client-side enforcement weaknesses.

Assistant System Engineer-Trainee at Tata Consultancy Services, Feb 2025 - Present · 1 yr 8 mos, Hyderabad, In our ILP(Initial Leaarning Pragram) we were trained in JAVA, Oracle Live SQL, HTML, CSS, JavaScript. Apart from that we were further given training on JSP, Servlets, Spring Boot and AngularJS. Database that we used for making projects was Derby. Also we had lots of business skills activities related to english listening and speaking skills, verbal and non-verbal communication, team activities, group discussions, role playing, skits, email etiquettes, presentation skills etc.

Flutter developer at VNR Seeds Private Limited, Jun 2023 - Dec 2023 · 7 mos, Raipur, - Built a Flutter-based mobile application (Android & iOS) for conference room bookings. - Created backend Rest APIs (Laravel, MySQL), gaining hands-on experience with frontend-backend interaction.

Education

Bachelor of Technology - B. Tech, Computer Science, Bhilai Institute of Technology (BIT), Durg

Higher Secondary Certificate, Physics, Chemistry and Mathematics, Swami Vivekananda Senior Secondary School, Raipur(C.G.)