Security Analyst

ATOM CYBER SECURITY LLC; Tinley Park (IL); On-site; USD 70,000 - 110,000; Full time

Benefits offered by this job

Health Insurance

Life Insurance

Long-Term Disability (LTD)

401K Plan

Parental Leave

On-site Fitness Center

Job summary

ATOM CYBER SECURITY LLC is seeking a detail-oriented Security Analyst to join our Security Operations Center. You will monitor, detect, prevent, and respond to threats while supporting business operations, serving as the first line of defense for the organization’s systems and data.

You will work on security monitoring, incident response, and defense tasks, including tuning rules, maintaining backups, and collaborating with teammates to resolve client issues. 50% travel is possible.

Qualifications

• Associate’s or Bachelor’s degree in Cybersecurity, Computer Science, or related field (or equivalent) or 1–2 years of IT/cybersecurity or SOC experience is preferred but not required.

Responsibilities

• Monitor security tools and platforms for alerts and suspicious activity.
• Analyze logs and network traffic to identify threats or anomalies.
• Validate and categorize alerts by severity, urgency, and relevance.
• Support disaster recovery by monitoring backups and health of systems.
• Assist in tuning detection rules to improve monitoring capabilities.
• Document troubleshooting steps and resolutions for continuity.
• Participate in security tool configuration, patching, and incident response activities.
• This is an in-office role with up to 50% travel.

Skills

SIEM & logs analysis

Threat intel awareness

Analytical thinking

Communication skills

Incident response basics

Team collaboration

Education

Bachelor's/Associate in Cybersecurity or CS

Tools

Splunk

EDR

Firewalls

IDS/IPS

DLP solutions

PowerShell/Python

Job description

Description

We are seeking a detail-oriented and proactive Security Analyst to join our dynamic Security Operations Center team. As a Security Analyst, you will be responsible for monitoring, detecting, preventing and responding to security threats and incidents as well as supporting business operations. You will serve as the first line of defense in protecting our organization's systems and data, ensuring security events are identified, analyzed, and escalated appropriately.

Role and Responsibilities

Security Monitoring and Analysis

• Continuously monitor security tools and platforms for alerts and suspicious activity.
• Analyze logs and network traffic to identify potential threats or anomalies.
• Validate and categorize alerts based on severity, urgency, and relevance.
• Work to improve client security posture

Operational Support

• Monitor and maintain system and configuration backups to support disaster recovery efforts
• Assist in the creation and tuning of detection rules to improve monitoring capabilities.
• Perform routine checks to ensure the health and performance of security tools and technologies.
• Analyzes and investigates the customer needs through remote diagnostics and qualifying questions over the phone
• Solves complex system and network problems using logic and knowledge
• References and contributes to Atom cybersecurity knowledge base
• Communicates and works effectively as a team with colleagues to solve client issues
• Assist in server administration, network backups, installs, and special projects
• Supports wireless access points, switches, firewalls, and other critical network infrastructure components
• Routinely uses computer and network knowledge to troubleshoot and find the best solution for customer IT needs
• Willing to gain certifications on Atom Cybersecurity-supported products, software and hardware systems
• Consistently reviews and prioritizes tickets and workload
• Documents troubleshooting steps and final resolution to ensure continuity in support
• Encourages and builds positive relationships and communicates effectively with co-workers, customers and third-party vendors
• Performs other duties as assigned
• This is an in-office position with up to 50% travel

Security Hardening and Defense

• Participate in implementing and maintaining security tools, including firewalls, endpoint protection, and threat detection systems.
• Develop and enforce security baselines, policies, and procedures for systems and infrastructure.
• Assist in configuring detection rules and tuning security systems to reduce false positives and improve detection accuracy.
• Recommend and implement security patches, configurations, or compensating controls to address vulnerabilities.
• Assist in Incident Response efforts in event of a security breach
• Triage security tickets from various alert systems.
• Potential opportunities to participate in some red team activities at times.
• Performs additional duties as assigned.

Requirements

Qualifications and Education Requirements

Education and Experience

• Associate’s or Bachelor’s degree in Cybersecurity, Computer Science, or a related field (or equivalent experience) or 1-2 years of experience in IT, cybersecurity, or a SOC environment is preferred but not required.

Technical Skills

• Familiarity with security technologies such as SIEM (e.g., Splunk, Sentinel) EDR, Business Continuity/BDR, firewalls, IDS/IPS, and DLP solutions.
• Basic understanding of networking concepts (TCP/IP, DNS, VPNs, etc.).
• Knowledge of common cyber threats, attack vectors, and frameworks (e.g., MITRE ATT&CK).
• Basic scripting or query knowledge (e.g., Python, PowerShell, or SQL) is a plus.

Certifications (Preferred)

• CompTIA Security+, CySA+, or equivalent.
• Certified SOC Analyst (CSA), CEH, or other relevant certifications.
• CCNA
• AZ-104
• MS-102 (Microsoft 365 Administrator)
• Cisco Meraki Solutions Specialist

Key Competencies

• Strong analytical and problem-solving skills.
• Excellent written and verbal communication.
• Ability to work under pressure and handle multiple tasks simultaneously.
• High level of integrity, professionalism, and attention to detail.
• Willingness to learn and adapt to evolving cybersecurity challenges.
• Working proficiency across the Microsoft security stack: Sentinel, Defender XDR, Intune, Entra ID.
• US Person (US citizen or LPR); eligible for background check and ITAR/EAR training.

Work Environment

• 24/7 operations may require shift work, including nights, weekends, and holidays.
• Collaborative team environment with opportunities for professional growth and development.

PHYSICAL DEMANDS

While performing the duties of this job, the employee uses his/her hands to finger, handle, or feel objects; reach with hands and arms. The employee uses a computer, copier, fax, and telephone equipment. The employee must be able to sit for a prolonged period. Must be able to lift up to 50 pounds.

BENEFITS

GROUP HEALTH INSURANCE:??After a 30-day waiting period, full-time employees (who work at least 30 hours per week) and their dependents, are eligible to enroll in health benefits through BlueCross BlueShield of Illinois (BCBSIL). ?Health options include a choice of 2 PPO plans, a High Deductible Health plan and a HMO. In addition, Dental benefits are available as well as a Vision PPO plan utilizing the EyeMed network. Atom also offers voluntary worksite benefits including critical illness and accident coverage, short-term disability insurance, supplemental life and pet insurance. ?

EMPLOYER PROVIDED LIFE/AD&D INSURANCE: ?After a 30-day waiting period, Atom cybersecurity provides a flat $25,000 Life Insurance benefit, administered by BlueCross BlueShield, to all full-time employees (who work at least 30 hours per week). Accidental Death & Dismemberment (AD&D) benefit payments are determined based on the type of loss incurred and are payable up to the full Life Insurance benefit amount. Life and AD&D Insurance coverage amounts are reduced at ages 65, 70 and 75.

EMPLOYER PROVIDED LTD: Long-Term Disability (LTD) insurance is an employer-provided benefit and provides protection from loss of income in the event that an employee is unable to work due to illness, injury, or accident for a long period of time. ?The elimination period is 90-days, and the maximum benefit is 60% of covered payroll up to $6000/month. This benefit is paid entirely by Atom cybersecurity and has no cost to the employee.

EMPLOYEE ASSISTANCE PROGRAM:?All employees may utilize the Disability Resource Services through BlueCross BlueShield of Illinois to assist themselves and their immediate family with convenient resources to help address emotional, legal and financial issues. Telephonic counseling and web-based services are available as well as a limited number of geographically accessible face-to-face sessions.

401K PLAN:?All employees are eligible after 120 days of service to contribute on either a pre-tax or post-tax (Roth) basis to the 401K plan, administered by Principal Financial Services. Atom offers an employer match equal to 100% of the first 3% of deferrals plus 50% of the next 2% of deferrals.?

FINANCIAL ADVISORY SERVICES: Atom cybersecurity partners with Merrill Lynch to offer financial advisement to all employees. Merrill Lynch financial advisors are available to assist employees at no cost, with their 401k and retirement questions. ?

PERMISSIVE TIME OFF POLICY: Atom provides a competitive paid time off policy for all full‑time regular employees after a 90‑day waiting period. Atom cybersecurity empowers their employees to work with their managers and team to coordinate all time off. Managers may impose a limit to requests for time off based on performance and tenure.

PARENTAL LEAVE: Atom cybersecurity offers a generous parental leave policy for new parents. After 24-months of employment, Atom provides full‑time regular employees with 90‑days of paid Maternity leave and 10‑days of paid Paternity leave. Employees with less than 24‑months of service may take the same amount of unpaid time off.

FITNESS CENTER: Atom cybersecurity offers a free off‑site fitness center at the Tinley Park headquarters office location to all employees from 5:00am to 8:00pm Monday through Friday. Employees utilize the gym equipment at their own risk.