T&T | Cyber: D&R | Consultant | Network Security | Bengaluru

The L1 Network Security Operations & Infrastructure Support Engineer is responsible for providing first-level monitoring, incident handling, basic troubleshooting, and operational support across security and network technologies, including firewalls, IDS/IPS, WAF, NAC, EDR/XDR, DLP, CASB, patching, PAM, and related infrastructure components. The role ensures timely response to alerts, execution of SOP-based activities, and escalation to L2/L3 teams when required.

Required Skills: -

• • 2+ years in IT Security, Network Operations, or Infrastructure Support.

  • Basic understanding of TCP/IP, routing, switching, VLANs.

  • Knowledge of security fundamentals (CIA, Zero Trust, malware, phishing).

  • Familiarity with firewalls, IDS/IPS, WAF, EDR, PAM, DLP, NAC, MDM.

  • Ability to follow SOP/runbook-based troubleshooting.

  • Good ticketing skills (ServiceNow, Jira, Remedy).

  • Strong communication and customer-handling skills.

  
  

1. Perimeter Security & Network Security (Must have)

• Monitor alerts and events from Perimeter Firewalls (Palo Alto / Fortinet / Check Point / Cisco).

• Perform basic troubleshooting such as rule lookup, session checks, and connectivity validation.

• Monitor IDS/IPS events and raise incidents for suspicious activity.

• Perform initial triage of WAF alerts and identify false positives vs genuine attacks.

• Support DDoS monitoring activities and escalate critical events.

2. Endpoint & Email Security (Must have)

• Monitor and respond to alerts from EDR/XDR solutions (CrowdStrike, Defender, SentinelOne, etc.).

• Validate threat detections for malware, suspicious behavior, quarantined files.

• Review alerts in Secure Email Gateway (Proofpoint, M365, IronPort) for spam/malicious indicators.

• Support user requests like email release, safe sender/blocked sender updates.

3. Identity & Access Security (good to have)

• Provide first-level support for Privileged Access Management (PAM):

• • Password checkout issues /Account lockouts/Session connection failures

• Follow SOPs for provisioning/deprovisioning privileged users as per approval.

4. Data Protection & Cloud Security (good to have)

• Monitor DLP alerts for web, email, endpoint channels.

• Run SOP-based triage for policy violations and escalate incidents.

• Support CASB/Policy Broker alert validation (Shadow IT, risky SaaS usage).

5. Device, Patch & Network Infrastructure Support (Must have)

• Support Patch Management (Windows/Linux) for scheduled patch cycles.

• Validate agent health, patch status, and provide initial troubleshooting.

• First-level support for MDM platform (Intune, Workspace ONE - anyone):

• • Device onboarding /Compliance issues /Profile/Policy sync issues

• Basic NAC support (Forescout / ISE/Aruba Clear pass - anyone):

• • Endpoint posture checks /VLAN assignment issues /Guest access onboarding

• Support Switch & Wi-Fi Management:

• • Basic connectivity checks / Port status /Device availability monitoring

6. Monitoring, Reporting & Documentation ( Must have)

• Monitor dashboards, SIEM alerts, and daily health checks.

• Create incident tickets and document troubleshooting performed.

• Generate daily/weekly compliance and alert summary reports.

• Follow shift handover/handoff documentation standards.

Preferred Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Information Security, or a related field.

• Experience working with global clients and cross-functional teams.

• Ability to manage multiple opportunities and priorities in a fast-paced environment.

Location and way of working

• Base location: Bangalore

• Professional is required to work from office.

• Inspiring - Leading with integrity to build inclusion and motivation

• Committed to creating purpose - Creating a sense of vision and purpose

• Agile - Achieving high-quality results through collaboration and Team unity

• Skilled at building diverse capability - Developing diverse capabilities for the future

• Persuasive / Influencing - Persuading and influencing stakeholders

• Collaborating - Partnering to build new solutions

• Delivering value - Showing commercial acumen

• Committed to expanding business - Leveraging new business opportunities

• Analytical Acumen - Leveraging data to recommend impactful approach and solutions through the power of analysis and visualization

• Effective communication – Must be well abled to have well-structured and well-articulated conversations to achieve win-win possibilities

• Engagement Management / Delivery Excellence - Effectively managing engagement(s) to ensure timely and proactive execution as well as course correction for the success of engagement(s)

• Managing change - Responding to changing environment with resilience

• Managing Quality & Risk - Delivering high quality results and mitigating risks with utmost integrity and precision

• Strategic Thinking & Problem Solving - Applying strategic mindset to solve business issues and complex problems

• Tech Savvy - Leveraging ethical technology practices to deliver high impact for clients and for Deloitte

• Empathetic leadership and inclusivity - creating a safe and thriving environment where everyone's valued for who they are, use empathy to understand others to adapt our behaviours and attitudes to become more inclusive.

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