IMS CSCF Engineer (Nokia & Telecom Core) | CompNova | Remote (USA, Canada)

CompNova; United States; Remote; USD 165,000 - 262,000; Full time

Job summary

CompNova is seeking an experienced IMS CSCF Engineer to drive CSCF architectures across the USA and Canada on a remote engagement. You will own SIP signaling, IMS registration flows, interoperability testing, and network performance tuning for reliable VoIP and 5G voice services.

You will configure P-CSCF, I-CSCF, S-CSCF, integrate with HSS/UDM, perform IOT, troubleshoot signaling issues, and work with multi-vendor teams and technical recruiters.

Qualifications

• Bachelor’s degree in Telecommunications Engineering, Electrical Engineering, Computer Science, or related field.
• Minimum 5+ years in telecom core networks and IMS CSCF engineering.
• Strong expertise in SIP, SDP, Diameter, RTP, and SIGTRAN.
• Experience with Nokia, Ericsson, or Huawei IMS core architectures.
• Experience with real-time network troubleshooting and packet analysis (Wireshark).
• Know-how on cloud-native deployment, CNFs/VNFs, and containerization.
• Legal work authorization for USA/Canada (C2C, W2, or IC).

Responsibilities

• Own core SIP signaling, IMS registration flows, and interop testing.
• Configure CSCF components (P-CSCF/I-CSCF/S-CSCF) and Diameter/SIP interfaces.
• Troubleshoot voice call drops and latency; collaborate with cross-functional teams.
• Coordinate with recruitment leaders and client stakeholders during deployments.
• Maintain documentation and network diagrams.

Skills

SIP signaling

Network troubleshooting

Cloud-native / CNFs

Analytical problem solving

Communication

Remote collaboration

C2C / W2 eligibility

Education

Bachelor's degree in Telecommunications Engineering or related field

Tools

Jira

Confluence

Wireshark

TShark

Kubernetes

Helm

CNF/VNF tooling

Job description

Position Summary

Driving advanced IP Multimedia Subsystem (IMS) architecture, Call Session Control Function (CSCF) engineering, and carrier-grade telecommunications solutions across remote operations in the USA and Canada, CompNova is actively seeking an accomplished IMS CSCF Engineer for a dynamic C2C professional engagement. In this vital technical role, you will design, deploy, configure, integrate, and optimize complex P-CSCF, I-CSCF, and S-CSCF network elements, ensuring uncompromised session routing, voice quality, and high availability across distributed cloud environments. Bringing 5+ years of progressive professional hands‑on experience in telecommunications core engineering, you will empower Tier‑1 mobile network operators to achieve superior signaling reliability, low‑latency call establishment, and resilient communication workflows. This prestigious career opportunity offers competitive remuneration, high executive visibility, and professional growth within a premier global IT consulting and executive recruitment enterprise.

Detailed Job Description

As an IMS CSCF Engineer supporting CompNova on a remote basis across the USA and Canada, you will take full operational, tactical, and technical ownership of core SIP signaling, IMS registration flows, interoperability testing, and network performance tuning. Your day‑to‑day responsibilities include configuring Call Session Control Functions, managing Diameter and SIP interfaces, troubleshooting voice call drop anomalies, collaborating with cross‑functional core engineering squads, and interacting directly with technical recruitment leaders like Salwan Singh.

Key Responsibilities

• Architect, deploy, configure, test, and maintain enterprise‑grade IMS P-CSCF, I-CSCF, and S-CSCF network elements.
• Analyze, troubleshoot, and optimize SIP signaling, registration, call setup, and teardown flows across IP networks.
• Integrate CSCF platforms with Home Subscriber Servers (HSS), User Data Management (UDM), and Application Servers.
• Execute rigorous interoperability testing (IOT) and end‑to‑end voice over LTE (VoLTE) and 5G voice (VoNR) service validation.
• Monitor core network performance metrics, traffic counters, and signaling latency to preempt operational bottlenecks.
• Conduct root‑cause analysis (RCA) and incident remediation for complex signaling failures and session drops.
• Collaborate seamlessly with multi‑vendor engineering squads, NOC teams, and client project stakeholders during deployment cycles.
• Maintain meticulous technical documentation, network architecture diagrams, routing policies, and configuration audit logs.

Required Qualifications & Skills

• Bachelor’s degree in Telecommunications Engineering, Electrical Engineering, Computer Science, or related technical discipline.
• Minimum of 5+ years of progressive professional hands‑on experience in telecom core networks and IMS CSCF engineering.
• Strong, demonstrable operational expertise in SIP, SDP, Diameter, RTP, and SIGTRAN protocols.
• Comprehensive working knowledge and practical proficiency in Nokia, Ericsson, or Huawei IMS core architectures.
• Deep practical experience in real‑time network troubleshooting, packet analysis, and signaling trace inspection (Wireshark, TShark).
• Solid practical grasp of cloud‑native deployment models, containerization, and virtualized network functions (VNFs/CNFs).
• Exceptional analytical problem‑solving aptitude, crisis management skills, and professional communication capabilities.
• Mandatory legal work authorization and physical availability for remote professional operations in the USA or Canada (C2C, W2, or IC eligible).

Nice‑to‑Have Skills

• Professional vendor certifications such as Nokia Certified Telecommunications Engineer or Cisco Certified Network Professional (CCNP) Collaboration.
• Hands‑on familiarity with Kubernetes container orchestration, Helm charts, and cloud‑native network service meshes.
• Prior professional working experience in top‑tier multinational mobile network operators (MNOs) or tier‑1 telecom vendors.
• Experience utilizing enterprise IT service management and agile tracking platforms (Jira, Confluence) for ticket resolution.
• Active participation in telecommunications standardization bodies, 3GPP forums, or core engineering communities.

Application Information

• Recruiter: CompNova Recruitment Division
• Contact Name: Salwan Singh (Talent Acquisition Specialist)
• Email: [e-mail]
• Phone:
• Company Website: https://www.compnova.ai
• Salary/Rate: Market Competitive / Enterprise C2C Contracting Package
• Deadline: Open until filled (Urgent Remote IMS CSCF Engineering Opening – 10+ Openings)
• Notice Period: Immediate to 14 Days Preferred
• Contract Duration: Contract-to-Contract (C2C) / Remote Engagement (USA & Canada)

Recruitment Pro Tip

When applying for this IMS CSCF Engineer position through CompNova, ensure your resume explicitly highlights your hands‑on SIP signaling, Nokia/IMS core architecture portfolio, and confirm your C2C availability for the USA or Canada.