Abhishek Maheshwari

Senior Security Analyst at Eventus Security | Ex-TCSer |CCNA | Splunk Certified Admin | Splunk Power User | CEH

Jeddah, Makkah, Saudi Arabia

About

As a Cyber Security Analyst with over 4 years of hands-on experience, I specialize in enhancing organizational security through advanced SIEM solutions, threat detection, and operational optimization. My expertise spans key platforms such as **Splunk** and **Microsoft Sentinel**, where I have consistently delivered results in streamlining security operations, improving threat identification, and automating incident response workflows. In my current role as a SIEM/SOC Engineer at Aranca Pvt Ltd, I have designed and implemented automated SOAR workflows that have significantly reduced manual effort and accelerated threat mitigation processes. Additionally, I have built and optimized custom Splunk dashboards, providing real-time visibility into security threats and improving response times by over 30%. My work with **Microsoft Sentinel** has enhanced cloud security monitoring and ensured seamless scalability across cloud environments. Previously, as a SIEM Engineer at Tata Consultancy Services, I progressed from a Splunk Admin to a Sentinel SME, showcasing my proficiency in both platforms. I led initiatives that reduced false positives by 30% and increased threat identification by 20%, all while ensuring the optimization of use cases and security workflows. Automation through SOAR integration was another key achievement, reducing manual workloads by 30% and boosting team productivity. Certified in Splunk Enterprise Administration, CCNA, and CEH, I am committed to leveraging my technical expertise to mitigate risks, improve security postures, and drive continuous improvement in dynamic security environments. I thrive on challenges and am passionate about contributing to a proactive and resilient security framework.

Experience

  • Senior Security Analyst at Eventus Security
    Jun 2025 - Present · 1 yr 2 mos

  • Senior Security Analyst at Aranca
    Jul 2024 - Mar 2025 · 9 mos

    • Designed and implemented automated SOAR workflows for Julius Baer client to streamline incident response and enhance SOC efficiency, reducing manual effort and accelerating threat mitigation. • Built and optimized custom Splunk dashboards to automate investigation tasks and provide real-time visibility into threats, improving detection accuracy and response times. • Integrated and optimized SIEM processes within Microsoft Sentinel, enhancing cloud security monitoring and improving scalability across cloud environments.

  • Tata Consultancy Services (3 yrs 6 mos)
    • SIEM Engineer
      Mar 2023 - Jun 2024 · 1 yr 4 mos

      Hands on experience with Splunk SIEM platform and writing queries to extract data from indexers. - Create correlation rules and alerts using Splunk Processing Language and Regular Expressions - Integrate logs from different security devices like application, proxy, database, firewall etc. to SIEM. - Experience in analyzing and onboarding all the possible security tools eg. Fire-eye(HX, EX., NX) ,Palo alto endpoint protection etc.

    • Cyber Security Analyst
      Jan 2022 - Mar 2023 · 1 yr 3 mos

      - Work with customer to understand the requirements and provide relevant solution architecture on Splunk. - Parsing of logs into Splunk using Splunk Add-on or manually extracting fields from logs using regex or by making changes in .conf file. - Analyze/Investigate Phishing E-mails to find out the threat vectors related to it and respond to end user accordingly. - Create dashboards, reports, and use cases as per client request for analysis of real time events and continuous monitoring of dashboards and alerts in Splunk. - Analyze event logs and find out the suspicious adversary behavior and follow MITRE tactics and techniques to improve the detection rate. - Knowledge of Splunk architecture and data ingestion into Splunk. - Knowledge of creating customized apps in Splunk and data enrichment in indexed data.

    • Cyber Security Engineer
      Jan 2021 - Jan 2022 · 1 yr 1 mo