# Nagarajan T

Nagarajan T is a remote worker on Himalayas, Security Engineer – SecOps (L2/L3) at Zoho Corporation, based in India.

Source: https://himalayas.app/@nagarajant

```text
Security Engineer at Zoho Corporation who built Python and LLM alert-triage automation and an AI-assisted SIEM platform.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | India |
| Authorized to work in | India |
| Salary expectations | 161k+ INR |
| Job categories | Security Engineer, SOC Analyst |
| Skills | Security Operations, SIEM, Detection Engineering, Incident Response, APT Threat Hunting, Vulnerability Management, Cloud Security, Workload Security, Digital Forensics, Malware Analysis, Data Loss Prevention, Threat Intelligence, MITRE ATT&CK, Cyber Kill Chain |
| Website | https://nagarajant37.github.io |
| LinkedIn | https://linkedin.com/in/nagarajan-t-187731213 |

## About

```text
At Zoho Corporation, I operate the SIEM detection pipeline across Falcon LogScale and ManageEngine Log360, from log onboarding and custom parsers to ATT&CK-mapped rules and alert tuning. I also hunt for APT activity across EDR and SIEM data covering AWS, Azure, and on-prem workloads.

I built and deployed Python and LLM automation for L1–L3 alert triage, enriching alerts with IOC reputation and asset and user context. I use Claude and local Ollama models to draft detection rules, then test and tune each one before it goes live.

I lead L2/L3 incidents from triage and containment through recovery and root-cause analysis, and conduct forensic investigations with Magnet AXIOM and Cellebrite. My work also includes cloud workload hardening, vulnerability management, and data-exfiltration detection.

On my personal project LogSec, I built an AI-assisted SIEM and triage platform that runs on a local Ollama model, keeping log data within the network. Earlier, at Intellect Design Arena Ltd, I worked rotating shifts in a 24/7 fintech SOC and handled incidents, vulnerability scans, phishing analysis, and malware investigations.
```

## Experience

### Security Engineer – SecOps (L2/L3) (current)

Zoho Corporation. Aug 2025 - Present

```text
Operates the detection pipeline in Falcon LogScale and ManageEngine Log360 end to end, including log source onboarding, custom parsers, correlation rules mapped to MITRE ATT&CK, and alert tuning. Leads L2/L3 incidents, conducts forensic investigations, and secures AWS and Azure workloads.
```

Skills: LogScale, ManageEngine-Log360, MITRE-ATT&CK, Cyber-Kill-Chain, Python, LLM, Claude, Ollama, AWS, Azure, Nessus, Magnet-Forensics, Cellebrite, Forcepoint-DLP, SpyCloud-DarkWeb-Monitoring, YARA, Sigma, Incident-Response, Threat-Hunting, Vulnerability-Management

### SOC Analyst – Security Operations Center

Intellect Design Arena Ltd. Jun 2023 - Aug 2025

```text
Worked rotating shifts in a 24/7 SOC, handling 1,000+ alerts a month from SIEM, EDR, antivirus, IDS, WAF, firewall, and DLP sources. Correlated events in IBM QRadar, FortiSIEM, and Microsoft Sentinel, owned P1–P3 incidents, and ran 150+ Nessus and Qualys scans monthly.
```

Skills: IBM-QRadar, FortiSIEM, Microsoft-Sentinel, ServiceNow, Nessus, Qualys, AWS, AWS-Inspector, CrowdStrike-Falcon-Cloud-Security, Trend-Micro-Apex-One, Python, YARA, MITRE-ATT&CK, Phishing-Analysis, Malware-Analysis

## Education

### Manipal University Jaipur

Master of Computer Applications, Computer Applications. 2024 - Present

```text
Pursuing a Master of Computer Applications (MCA) degree, ongoing since 2024.
```

### Rathinam College of Arts and Science

Bachelor of Science, Computer Science. 2020 - 2023

Activities and societies: Presented 'IAC Application – Industrial Automation with Cloud Application' at ETEST-23, a national ISTE-sponsored conference (2023).

```text
Completed a Bachelor of Science in Computer Science with a focus on Cloud Technology and Information Security. Coursework included Cloud Computing, Linux, and Ethical Hacking. Presented a project at a national conference.
```

## Tech stack

- Python
- JSON
- Linux
- Windows
- Qualys
- Git
- ServiceNow
- Ollama
- Magnet AXIOM
- Microsoft Sentinel
- Claude

To contact Nagarajan, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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