Security Engineer

6 days ago

Madhapur Hyderabad Telangana, India Locuz Enterprise Solutions Full time ₹ 12,00,000 - ₹ 24,00,000 per year

Role: Security Engineer – DNS Security

Expertise Level – Level 2

Experience – 5-8 years

Location: Bengaluru, India

Roles & Responsibilities

You'll own design, deployment, tuning and operationalization of enterprise-grade DNS security using Cisco Umbrella, Infoblox DDI, and related tooling. This is a hands-on technical role that works across networking, cloud, SOC, and incident response teams.

  • Design, deploy and manage Cisco Umbrella policies (DNS-layer protection, content filtering, secure proxy) across hybrid environments.
  • Administer Infoblox DDI (DNS/DHCP/IPAM) — zone management, DNSSEC, DHCP scopes, and IP address lifecycle.
  • Implement DNS security controls: RPZ, DNSSEC, response rate limiting, and sinkholing workflows.
  • Integrate DNS telemetry with SIEM/SOAR for detection, alerting and automated response.
  • Perform threat hunting and malware/ransomware detection using DNS query patterns and threat intelligence.
  • Triage and lead DNS-related security incidents — containment, root-cause analysis, remediation and post-incident reporting.
  • Tune and operate DNS resilience and availability: monitoring, capacity planning, and failover testing.
  • Manage change control for DDI changes — RFCs, peer reviews, and rollback procedures.
  • Conduct security assessments and configuration hardening for DNS servers, resolvers and forwarders.
  • Liaise with network, cloud and application teams to deploy DNS mitigations and ensure least-privilege DNS access.

Required skills & qualifications

  • 5+ years in network/security engineering with demonstrable DNS experience.
  • Hands-on experience with Cisco Umbrella and Infoblox (production deployments).
  • Strong DNS protocol knowledge (A/AAAA/CNAME/NS/SOA, DNSSEC, TSIG, recursion, EDNS).
  • Experience integrating DNS telemetry into SIEM (Splunk/QRadar/Elastic) and SOAR platforms.
  • Proficiency in scripting (Python, Bash) and REST API automation.
  • Bachelor's degree in CS/IT/EE or equivalent; relevant certifications preferred

Desired qualities

  • Strong cross-team communicator; translates technical DNS issues for non-technical stakeholders.
  • Security-first mindset with attention to operational rigor and documentation.
  • Curious and proactive — keeps up with DNS-based attack trends and emerging tooling.
  • Comfortable with cloud-native DNS (Route53, Azure DNS, Cloud DNS) and hybrid architectures.

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