SIP-IMS Technical Consultant

TechDigital Group; Bothell (WA); On-site; USD 80,000 - 110,000; Full time

Job summary

A technology solutions company in Bothell, WA, seeks an experienced professional to conduct testing and analysis related to device configurations and service enablement in the telecommunication industry. The role requires 8-12 years in tech, strong debugging skills on protocol levels, and experience with enterprise customers. Responsibilities include thorough testing of HTTPS protocols, SSL certificate validation, and support for partners during pre-launch QA. Strong communication skills are essential.

Qualifications

• 8-12 years minimum in computer/software technology.
• 4 years minimum working with enterprise customers.
• Experience with telecommunication industry preferred.
• Experience with mobile technology solutions preferred.

Responsibilities

• Conduct tests to ensure device and service configurations adhere to GSMA guidelines.
• Perform in-depth testing of HTTP/HTTPS traffic.
• Validate SSL/TLS certificates and analyze JWT-based security.
• Collect and analyze network traces and logs to diagnose issues.
• Track bugs and facilitate the debugging process with partners.
• Enable partners to run QA testing pre-launch and provide support.

Skills

SIP knowledge

MSRP knowledge

IMS/RCS Architecture knowledge

Protocol debugging skills (SIP, MSRP, TCP)

Android application debugging

Communication skills

Tools

Bug tracking tools

Job description

Primary Responsibilities

• Carrier certification
• Conduct tests to ensure device and service configurations adhere to GSMA TS.43 guidelines, particularly for secure service enablement.
• HTTP/HTTPS Protocol Testing: Perform in-depth testing of HTTP/HTTPS traffic, including header validation, status code verification, API endpoint testing, and performance analysis.
• SSL/TLS Certificate Validation: Test and verify SSL/TLS certificate implementations, including chain of trust, expiration, revocation status (OCSP/CRL), and cipher suite compatibility.
• JWT Security Analysis: Analyze and test JWT-based authentication and authorization mechanisms, including token generation, validation, signature verification, expiry, and common vulnerabilities (e.g., insecure algorithms, information disclosure).
• Log Analysis & Troubleshooting: Collect, review, and analyze network traces (e.g., Wireshark), server logs, and application logs to diagnose issues and identify root causes.
• Generic partner support
• Issue Handling: Track the bugs with priority for premium partners, triage them, minimize duplicates and secure all the information necessary for Eng to address them. Communicate across functions and teams to facilitate the debugging process and meet the service level objectives. Host regular meetings with partner QA teams to share the status update as needed.
• Pre-launch QA by partners: Enable partners to run QA testing pre-launch with instructions from internal stakeholders such as Product and Eng. Provide live or online support during the test. Verify issues locally on test devices to align with the partner QA team on the findings.

Work Experience

• 8-12 years minimum in computer/software technology
• 4 years minimum working with enterprise customers (in professional services, tech support, and/or product management)
• Experience with telecommunication industry and networking infrastructure is a plus
• Experience with mobile technology solutions/applications is a plus

Technical Skills

• Should have good knowledge of SIP, MSRP protocol.
• Should have good knowledge of IMS/RCS Architecture.
• Should have good debugging skills on protocol level like SIP, MSRP, TCP.
• Experience in Android application debugging and should know how to capture Bug reports, logcat & adb commands.
• Experience in bug reporting on any bug tracking tools & should have a good understanding of the bug life cycle and its stages.
• Excellent verbal & written communication skills.