Leandro Esmoris
Bahía Blanca
Summary
Cybersecurity professional in transition, with a strong foundation in SOC operations, incident response, network security, and cloud defense. CompTIA Security+ certified, with hands-on experience in DFIR, threat hunting, and network monitoring. Previously worked in administrative and accounting roles managing sensitive information and regulatory workflows, bringing a strong compliance mindset and precise documentation skills. Recognized for effectively identifying threats, implementing security controls, and communicating clearly with stakeholders. Combines technical proficiency across SIEM, endpoint, network, and identity security with a proactive, adaptable approach to problem-solving. Highly motivated to contribute within a Blue Team environment and continue advancing professionally.
Overview
9
9
years of professional experience
1
1
Certification
Work History
Cybersecurity Analyst Intern
Freelance
02.2025 - Current
- Provided basic security support to SMEs: access reviews, data protection safeguards, and secure configuration baselines.
- Authored checklists and SOPs for networks, servers, routers/firewalls, IAM, and endpoint security.
- Leveraged administrative strengths to deliver clear documentation and user-facing guidance.
- Responded to security incidents, performing root cause analysis and remediation.
- Provided cybersecurity training to enhance client awareness and best practices.
Accounting Administrator
Estudio Contable Montani
05.2021 - 05.2025
- Processed tax filings (VAT, gross income) and informational regimes; generated VEPs and client support.
- Performed bank reconciliations and journal entry preparation with accuracy and auditability.
- Loaded and validated financial data in ERP/management systems; produced reports for stakeholders.
- Transferable competencies: handling critical datasets, confidentiality, systems usage, and reporting discipline.
- Developed and maintained comprehensive documentation for accounting policies and procedures to ensure consistency.
- Analyzed financial data to identify trends, providing insights that informed strategic decision-making processes.
- Ensured timely payment of invoices, maintaining positive vendor relationships and improving cash flow management.
Accounts Payable
CNH Industrial
01.2017 - 11.2020
- Recorded and controlled invoices in ERP; tracked payments and performed account reconciliations.
- Coordinated with vendors and internal teams to resolve incidents and discrepancies end-to-end.
- Transferable competencies: incident handling, centralized systems operations, sensitive data stewardship.
- Maintained clean and organized files by keeping accounts payable records up-to-date.
- Managed accounts payable and receivables and payroll.
- Enhanced internal controls by developing and implementing policies and procedures for the accounts payable function.
- Ensured timely payment of bills and invoices by managing accounts payable and receivable functions.
Education
Bachelor’s Degree in Cyber Defense - Cyber/Computer Forensics And Counterterrorism
Universidad De La Defensa Nacional UNDEF
Buenos Aires, Argentina12-2030
Higher Technician - Telecommunications
Universidad Tecnológica Nacional
Argentina12.2025
High School Diploma - Economics
Instituto Adventista Bahiense
Argentina12.2007
Skills
Blue Team & DFIR: SOC monitoring, threat hunting, incident response, digital forensics (FTK Imager, KAPE, Velociraptor, Volatility, Autopsy)
SIEM & Detection: Splunk (SPL), Elastic Stack (Kibana/Elasticsearch, KQL), Sysmon
Network Security: Wireshark, PCAP analysis
Malware Analysis: Static/dynamic analysis
Windows & AD: Event Logs, ETW, Registry artifacts
Cloud & Endpoint Security: Cloud security fundamentals, endpoint protection
Vulnerability & Threat Intel: MITRE ATT&CK, threat intelligence reports
Accomplishments
Ranked Top 1 in Argentina on CyberDefenders.org Labs, and top 50 World Rank.
Certification
- 2025: SLFS101: Introduction to Linux.
- 2025: Google Cloud Computing Foundations Certificate.
- 2025: SOC Analyst Path – Hack The Box.
- 2025: CompTIA Security+ ce (ID: 81TLPYT58FR1SXE2).
- 2025: FortiGate 7.6 Operator.
- 2024: Google Cybersecurity Professional Certificate – Google.
- 2024: Junior Cybersecurity Analyst – Cisco Networking Academy.
- 2025: Intro to Splunk – Splunk.
- 2025: AWS Educate: Getting Started with Security – AWS.
- 2024: Networking Technician – Cisco Networking Academy.
- 2023: Project Management Specialization – Google.
Additional Information
- SOC Analyst Tier 2 Labs – CyberDefenders.org.
- AWS Security Learning Path - letsdefend.io
- Attacking and Defending AWS - tryhackme.com
- Cybersecurity MOOC (University of Málaga / INCIBE), covering fundamentals, applied cryptography, social engineering, network and system security, secure programming, malware analysis, hardware and cyber-physical security, post-quantum security, and secure blockchain/AI. Included hands-on exercises and module-based assessments.
- Detecting Brute Force Attacks - letsdefend.io
- Detecting SQL Injection Attacks - letsdefend.io
- Defending Azure tryhackme.com
- Attacking and Defending AWS tryhackme.com
Languages
English
Professional Working
Timeline
Cybersecurity Analyst Intern
Freelance
02.2025 - Current
Accounting Administrator
Estudio Contable Montani
05.2021 - 05.2025
Accounts Payable
CNH Industrial
01.2017 - 11.2020
High School Diploma - Economics
Instituto Adventista Bahiense
Bachelor’s Degree in Cyber Defense - Cyber/Computer Forensics And Counterterrorism
Universidad De La Defensa Nacional UNDEF
Higher Technician - Telecommunications
Universidad Tecnológica Nacional
Career Objective
Seeking to join a cybersecurity Blue Team to apply technical knowledge and experience, develop advanced defensive skills, and pursue certifications such as CompTIA CySA+, CDSA and CCD.
References
Freelance: Leandro Saavedra – Ex Senior Team Leader, IBM Argentina /Independent contractor +54 9 291 574 5259
Accounting Firm: Mabel Montani – +54 9 291 461 3030