Greetings from Sify Technologies!

About Sify

Sify is the largest ICT service provider, systems integrator, and all-in-one network solutions company on the Indian subcontinent. Weve also expanded to the United States, with headquarters in the heart of Californias Silicon Valley.

Over 10000 businesses have become Sify customers. We also partner with other major network operators to deliver global network solutions.

We have an opening for L1 DNS at Mumbai

Location - Mumbai

Role Summary

We are looking for an experienced L1 DNS Engineer responsible for managing, troubleshooting, and supporting enterprise DNS infrastructure with a robust focus on F5 DNS (GTM), networking, and DNS operations. The candidate will provide operational support, incident management, problem resolution, and change implementation for business-critical DNS services.

Key Responsibilities

Monitor and manage enterprise DNS infrastructure.

Troubleshoot DNS resolution issues, delegation problems, zone transfer issues, and DNSSEC-related incidents.

Configure and manage F5 DNS/GTM Wide IPs, Pools, Topology Load Balancing, iRules, and DNS listeners.

Perform DNS record management (A, AAAA, CNAME, MX, TXT, SRV, PTR).

Manage DNS zones and zone transfers.

Troubleshoot network connectivity issues using TCP/IP fundamentals.

Analyze packet captures using Wireshark and tcpdump.

Perform health monitoring and failover testing for DNS services.

Handle incidents, service requests, problem management, and change implementation.





Coordinate with application, server, security, and network teams for issue resolution.

Maintain operational documentation, runbooks, and SOPs.

Participate in on-call support and major incident management.

Required Skills

DNS

Strong understanding of DNS architecture and protocols.

DNS query flow and recursive resolution.

Forward and Reverse DNS.

Zone delegation and zone transfers.

DNS troubleshooting and performance analysis.

Experience with BIND or enterprise DNS platforms.

F5

Hands-on experience with F5 DNS/GTM.

Knowledge of

Wide IPs

Pools and Pool Members iRules

DNS Listeners

Data Centers and Servers

Monitors

Topology Load Balancing

GSLB synchronization

DNS Express

Experience in F5 LTM administration is preferred.

Networking

Strong knowledge of

TCP/IP

OSI Model

Routing and Switching

VLANs

NAT

Load Balancing

HTTP/HTTPS

SSL/TLS

Firewalls

Troubleshooting Tools

Wireshark tcpdump nslookup dig traceroute ping

Soft Skills

Strong troubleshooting and analytical skills.

Good verbal and written communication.

Ability to work in shifts and handle critical incidents.

Customer-focused mindset.

Certifications:CCNP security,F5 201

Best Regards,

Gopikumar M

Human Resources

M: (phone hidden)

E: [email protected]

SIFY Technologies Limited

Tidel Park, 2nd Floor ,4 Rajiv Gandhi Salai, Taramani

Chennai : 600 113

Kindly share your resume to [email protected]

📌 Opening ForDNS Networking at Mumbai
🏢 Sify
📍 Mumbai