Information Security Analyst

Atmosera

Security Analyst delivering proactive Managed Security and Managed Governance services in a remote setting. Safeguarding clients' environments and ensuring compliance with industry standards.

Posted 6/1/2026contractRemote • 🇨🇷 Costa RicaJuniorWebsite

Tech Stack

Tools & technologies

AzureCloudFirewallsLinux

About the role

Key responsibilities & impact

Monitor security alerts and incidents in Microsoft Sentinel, Defender XDR, and Defender for Cloud
Triage incoming alerts to determine severity, impact, and required response actions
Differentiate between false positives, benign activity, and actionable threats using established playbooks
Perform continuous monitoring of cloud, identity, endpoint, and network telemetry
Investigate suspicious activity across Azure, Entra ID, Microsoft Defender XDR, and integrated data sources
Correlate logs, events, and indicators to establish timelines and determine root cause
Escalate confirmed or high-risk incidents to senior analysts or incident response teams
Execute or recommend containment actions in accordance with defined procedures
Utilize Kusto Query Language (KQL) and Log Analytics to analyze security data
Correlate events across identity, endpoint, network, and cloud workloads
Identify trends, anomalies, and patterns indicative of malicious activity
Create and maintain detailed, audit-defensible investigation notes and case records
Document all triage decisions, escalation rationale, and response actions
Produce incident summaries and reporting for internal stakeholders and clients

Requirements

What you’ll need

1+ years of experience in a Security Operations Center or related security role
Hands-on experience with SIEM platforms (Microsoft Sentinel preferred)
Experience analyzing logs from one or more of the following:
- Azure / Entra ID
- Microsoft Defender (Endpoint, Identity, Cloud, Office 365)
- Windows / Linux systems
- Network security tools (firewalls, IDS/IPS)
- Cloud Security Posture Management - Defender for Cloud
Basic understanding of incident response processes and frameworks
Strong analytical and investigative skills

Benefits

Comp & perks

This is a contractor position in the United States with the ability to work from home but may require travel to a client site.
Atmosera is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

ATS Keywords

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Hard Skills & Tools

Kusto Query LanguageLog AnalyticsSIEM platformsMicrosoft SentinelMicrosoft DefenderCloud Security Posture ManagementWindows systemsLinux systemsnetwork security toolsincident response processes

Soft Skills

analytical skillsinvestigative skills