SI/SSI – IMS

Role Overview The Solution Integrator – IMS is responsible for end-to-end integration, configuration, testing, and deployment of IMS solutions within telecom networks.

The role ensures seamless interoperability of IMS components across multi-vendor environments while maintaining high service quality and reliability.

Key Responsibilities

• 1. Solution Integration & Deployment
• Perform end-to-end integration of IMS nodes (e.g., CSCF, SBC, TAS, DNS/ENUM).
• Execute installation, configuration, and commissioning of IMS solutions.
• Preparation of delivery specific MOPs and execution of Live node Activities.
• Ensure alignment with design documents, HLD/LLD, and customer requirements.
• 2. Testing & Validation
• Conduct system integration testing (SIT), interoperability testing (IOT), and user acceptance testing (UAT).
• Validate VoLTE, VoWiFi, and other IMS-based services.
• Troubleshoot integration issues and ensure defect resolution.
• 3. Network Configuration & Optimization
• Configure SIP protocols, routing, and call flows.
• Optimize IMS network performance and ensure KPI adherence.
• Support parameter tuning and capacity management.
• 4. Troubleshooting & Support
• Analyse logs, traces, and signalling flows (SIP/DIAMETER).
• Identify root causes and implement corrective actions.
• Provide L2/L3 support during deployment and post-integration phases.
• 5. Collaboration & Stakeholder Management
• Work closely with solution architects, design teams, and customers.
• Coordinate with cross-functional teams (Cloud, PACO, Transport).
• Support customer discussions and technical workshops.
• 6. Documentation & Reporting
• Prepare integration plans, test reports, and acceptance documents.
• Maintain knowledge repositories and standard operating procedures.

Technical Skills Required Skills & Competencies

• Strong understanding of IMS architecture and 3GPP standards.
• Hands-on experience with:
• SIP, SDP, DIAMETER protocols
• VoLTE / VoWiFi services
• Linux/Unix systems
• Knowledge of telecom nodes such as CSCF, TAS, SBC, DNS.
• Familiarity with packet core (EPC/5GC) and signalling flows.

Tools & Technologies

• Wireshark / signalling analysers.
• Scripting (Python/Shell) is an advantage.
• Cloud/Virtualization (NFV/SDN) exposure preferred.
• Docker and Kubernetes knowledge with exposure to Cloud Native solutions.

Experience & Qualifications

• Bachelor’s degree in Electronics, Telecommunications, or related field.
• Typically, 3–8 years of experience in telecom core/IMS integration.
• Experience working in multi-vendor environments is preferred.

Behavioural Competencies

• Strong analytical and problem-solving skills
• Customer-centric approach
• Ability to work under pressure and meet tight deadlines
• Effective communication and teamwork

Preferred Certifications

• IMS / VoLTE certifications
• Linux or cloud certifications (e.g., OpenStack, Kubernetes)
• Ericsson internal certifications (if applicable)

Key Deliverables

• Successful IMS integration and service rollout
• High-quality testing and defect-free deployments
• Timely issue resolution and customer satisfaction