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
Signalmash operates a cloud communications platform that enables businesses to manage and deliver RCS, SMS, and MMS messaging through carrier and technology-provider integrations. The platform provides comprehensive solutions including customer onboarding, messaging APIs, routing, compliance, vendor integrations, usage tracking, and billing. The company serves businesses looking to streamline their messaging infrastructure across multiple channels and carriers.
