Test Engineer - Core Telecom Protocols

Mobileum; Bengaluru; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Mobileum is seeking a Senior Quality Engineer with deep expertise in telecom protocols to drive QA for its telecom and software solutions. The ideal candidate will have 5+ years of QA experience, strong knowledge of telecom protocol testing, automation, and end-to-end system validation, with hands-on technical skills and collaboration across stakeholders.

This role requires hands-on testing of protocols (LTE, 5G, IMS, SIP, Diameter, SS7, VoIP, RAN, Core Network), use of protocol simulators and

Qualifications

• 5+ years in Quality Engineering with telecom protocol expertise (LTE, 5G, IMS, SIP, Diameter, SS7, VoIP, RAN, Core Network).
• Hands-on with protocol simulators, analyzers, and test tools such as Wireshark, Spirent, Keysight, IXIA.
• Strong SQL and DB experience (Postgres, Couchbase, ClickHouse).
• Proficient in test automation frameworks and scripting (Python, Shell, Java).
• Good knowledge of cloud-native platforms (Kubernetes, Docker, AWS/GCP/Azure) and CI/CD.
• Exposure to Big Data/Analytics (Hadoop, Spark, Kafka).
• Strong communication and stakeholder management skills.

Responsibilities

• Execute test strategies and best practices for telecom protocol validation and system testing.
• Collaborate with product, architecture, and development teams to align quality goals with business objectives.
• Perform end-to-end validation of telecom protocols (3G/4G/5G, IMS, SIP, Diameter, SS7, VoIP, etc.).
• Participate in test planning, automation coverage, and defect management.
• Conduct risk assessments, root-cause analysis, and support corrective actions.
• Track and report quality KPIs to project leads.
• Stay updated on emerging telecom technologies and testing methodologies.
• Support customer-facing teams to address escalations and acceptance testing.

Skills

Telecom Protocols

Test automation

SQL & DB knowledge

Programming scripting

Cloud platforms

Big Data

Communication skills

Education

BE / B.Tech. or MSc in CS or related

Tools

Wireshark

Spirent

Keysight

IXIA

Postgres

Couchbase

ClickHouse

Job description

Mobileum is a leading provider of Telecom analytics solutions for roaming, core network, security, risk management, domestic and international connectivity testing, and customer intelligence. More than 1,000 customers rely on its Active Intelligence platform, which provides advanced analytics solutions, allowing customers to connect deep network and operational intelligence with real-time actions that increase revenue, improve customer experience, and reduce costs.

Headquartered in Silicon Valley, Mobileum has global offices in Australia, Dubai, Germany, Greece, India, Portugal, Singapore and UK with global HC of over 1800+.

Join Mobileum Team

At Mobileum we recognize that our team is the main reason for our success. What does work with us mean? Opportunities!

Position Summary:

We are seeking a skilled Senior Quality Engineer with deep expertise in Telecom Protocols to drive quality assurance for our telecom and software solutions. The ideal candidate will have 5+ years of experience in QA, test strategy, and execution, with strong knowledge of telecom protocol testing, automation, and end-to-end system validation. This role requires hands-on technical skills, collaboration with cross-functional stakeholders, and a commitment to high-quality product delivery.

• Execute test strategies, frameworks, and best practices for Telecom protocol validation and system testing.
• Collaborate with product management, architecture, and development teams to align quality goals with business objectives.
• Perform end-to-end validation of telecom protocols (e.g., 3G/4G/5G, IMS, SIP, Diameter, SS7, etc.), ensuring compliance with industry standards.
• Participate in test planning, execution, automation coverage, and defect management.
• Conduct risk assessments, root cause analysis, and support corrective/preventive actions.
• Track and report quality KPIs and metrics to project leads.
• Stay updated on emerging telecom technologies, protocols, and testing methodologies, and adopt modern tools and practices.
• Support customer-facing teams to address escalations, resolve quality issues, and assist with customer acceptance testing.

Desired Profile:

• 5+ years of experience in Quality Engineering, with strong expertise in Telecom Protocols (LTE, 5G, IMS, SIP, Diameter, SS7, VoIP, RAN, Core Network, etc.).
• Hands-on experience with protocol simulators, analyzers, and test tools (e.g., Wireshark, Spirent, Keysight, IXIA, etc.).
• Hands-on experience on DB like Postgres, Couchbase, Click house is a must. Understanding SQL query construction and logic is necessary
• Proficiency in test automation frameworks and scripting (Python, Shell, or Java).
• Good knowledge of cloud-native platforms (Kubernetes, Docker, AWS/GCP/Azure) and CI/CD pipelines.
• Exposure to Big Data/Analytics platforms (Hadoop, Spark, Kafka) is a plus.
• Strong communication and stakeholder management skills.

Nice to Have:

• Experience with additional core network technologies and telecom protocols.
• Familiarity with security testing and compliance standards such as ISO 27001, GDPR, or GSMA security guidelines.
• Experience with cross-functional integration testing with third-party vendors or external teams.

Experience:

5+ years in QA/Testing with significant exposure to Telecom Protocols.

Qualification:

BE. / B.Tech., M.E./M. Tech. or M. Sc. in Computer Science or any related qualification.