This is a remote position.

Signalmash is a telecommunications provider delivering high-quality voice services and carrier-grade solutions. We’re looking for an experiencedVoIP Softswitch & NOC Technicianto join our technical operations team in India.

In this role, you’ll be at the core of our voice infrastructure, managing our Class 4 softswitch platform, establishing and maintaining carrier interconnections, and ensuring network performance and reliability during US business hours.

What You’ll Do

• Configure and manage Class 4 softswitch routing, including LCR optimization and traffic management

• Configure and maintain billing and rating systems for accurate call processing and invoicing

• Set up and manage interconnections with customers, carriers, and vendor partners

• Analyze PCAPs using Wireshark/tcpdump to diagnose call quality, routing, and protocol issues

• Monitor system performance, capacity, and call quality through NOC tools

• Create, manage, and resolve trouble tickets, coordinating with customers and vendors

• Test and validate new routes and trunks for correct call flow and audio quality

• Troubleshoot SIP signaling, media path, codec, and connectivity issues

• Maintain detailed documentation of configurations, network diagrams, and interconnection specs

• Respond to alerts/alarms to minimize disruptions and maintain SLAs

• Participate in on-call rotation for 24/7 coverage

Requirements

• 2+ years hands-on experience with Class 4 softswitch platforms

• Experience withPeerEdge by 46 Labsstrongly preferred, or similar platforms (SipNav, DeNova Labs, Veriswitch, FreeSWITCH, Kamailio, OpenSIPS)

• Proven experience configuring routing, billing, and rating systems

• Strong understanding of VoIP protocols: SIP, RTP, RTCP, SDP

• Proficiency with packet capture/analysis tools (Wireshark, tcpdump)

• Solid understanding of TCP/IP, UDP, networking fundamentals, and QoS

• Experience diagnosing codec issues, latency, jitter, and packet loss

• Familiarity with firewalls, NAT traversal, and SBCs

• Experience with NOC ticketing systems and procedures

• Strong documentation habits and attention to detail

• Excellent written and verbal English communication

• Ability to work independently and handle multiple priorities

Preferred

• Experience with CDR analysis and fraud detection/prevention

• Knowledge of SS7, ISUP, or TDM-to-IP gateways

• Scripting (Python, Bash, or similar) for automation

• Relevant industry certifications (Cisco, Juniper, VoIP-specific)

• Experience in a carrier / wholesale telecom environment

Benefits

• Competitive salary and comprehensive benefits

• Fully remote role aligned with US business hours

• Work on carrier-grade, cutting-edge VoIP infrastructure

• Collaborative team with strong telecom expertise

• Clear growth path and opportunities for skill development

• Direct impact on critical communications services

Originally posted on Himalayas