Raju Gupta

Operations Associate

Sahibzada Ajit Singh Nagar, Punjab, India7 yrs 8 mos experience

Most Likely To SwitchHighly Stable

Key Highlights

Expert in Linux system administration and cybersecurity.
Passionate about mentoring future ethical hackers.
Proficient in deploying secure web applications.

Stackforce AI infers this person is a Cybersecurity and Infrastructure Specialist with a focus on Linux and cloud technologies.

Contact

Skills

Core Skills

Linux System AdministrationCybersecurity

Other Skills

AWSAdministrationAmazon Web Services (AWS)Apache2BashBitdefender Endpoint ProtectionBurp SuiteDomain Name System (DNS)FirewallsIPTABLESInformation TechnologyKali LinuxLinuxMail server configurationMySQL

About

I am a Linux and Cybersecurity professional with a strong interest in teaching, mentoring, and building secure infrastructure. With experience in Linux system administration, web application deployment, and penetration testing, I help learners and organizations strengthen their foundation in server and network security. My areas of focus include Linux OS (Debian, Ubuntu, Kali), web servers (Apache2, Nginx), email systems (Postfix), databases (MySQL), and remote management using secure methods like SSH and VPN. I also explore real-world cybersecurity practices such as firewall rules, intrusion detection, and vulnerability assessments. Currently working with cloud platforms (AWS, Azure) and passionate about educating the next generation of ethical hackers, administrators, and engineers. • Linux System Architecture & Troubleshooting • Web Application Stack: Apache2, Nginx, MySQL, FTP, Postfix • Remote Server Access & Security (SSH, SSL-VPN, IPSEC VPN) • Firewall and Network Hardening (IPTABLES, NFTABLES) • Cloud & Infrastructure (AWS, Microsoft Azure) • Cyber-security & Ethical Hacking Fundamentals

Experience

Webmob software solutions

Linux System Administrator and Security Analyst

May 2023 – Present · 2 yrs 10 mos · Sahibzada Ajit Singh Nagar, Punjab, India · On-site

✅ Managed and hardened Linux environments (Ubuntu, Debian, Kali)
✅ Deployed web stacks: Apache2, MySQL, Nginx, Postfix, FTP
✅ Automated remote access with password-less SSH and VPNs
✅ Configured firewalls using IPTABLES and NFTABLES
✅ Performed penetration testing for internal tools
✅ Supported AWS infrastructure and implemented secure VPN access (SSL-VPN, IPSEC)
The learning curve has been intense—but rewarding. Every service we set up, every firewall we tune, and every threat we mitigate, brings more confidence in building reliable systems.

LinuxApache2MySQLNginxPostfixSSH+6

Nebero systems private limited

Linux System Administrator

Oct 2021 – May 2023 · 1 yr 7 mos · Mohali

Linux system administrator.
A) User and group management, file permission, LVM partition, IPtables and firewall.
B) Develop, monitor and maintain feature for the infrastructure, platform and application.
C) Maintain and create tools for the Linux environment and its users.
D) Managing network server.
E) Analyze error logs and fixing them together with the support team.
F) Run backups of data regularly and design new stored procedure.
G) Mail server configuration set up and backup daily basis data from one server to another server. Also IMAP mails sync data from cloud to local server.
H) Virtual host set up with Apache2 and Nginx.
I) Monitoring the server analysis daily uptime and maintain Logs.

LinuxIPTABLESApache2NginxMail server configurationUser and group management+1

Vodafone idea limited

Service Desk Analyst

Jul 2018 – Sep 2021 · 3 yrs 2 mos · Phagwara

A) Identify and diagnose issues and problems.
B) Create customer services satisfaction survey and program to enhance customer feedback.
C) Maintained, Updated customer database and network with stakeholders.