Assistant Maintenance Manager (Tier 3 Support)

CHINA MOBILE HONG KONG COMPANY LIMITED ("CMHK") is the wholly-owned subsidiary of China Mobile Limited (HKEx: 941), which ranks 53rd on the Fortune Global 500.

Our company is dedicated to delivering an exceptional service experience and to become a world-class sci-tech service enterprise, focusing on its three principal businesses of communications services, computing services and AI services. Guided by this vision, we cultivate a culture of trust, responsibility, and care — creating an environment where people can thrive. At CMHK, we are committed to unlocking human potential and empowering every striver to achieve success. We now invite high-caliber professionals to join us on this journey.

Division : Corporate Business Delivery Centre

In this position, you will:

• Provide deep technical support for complex terminal / UE issues escalated from Tier 2 Maintenance Team and/or the client, i.e.,handset firmware faults, SIM card issues, CPE (Customer Premises Equipment) problems, device interoperability failures, and application-level issues on end-user devices.
• Perform root cause analysis of complex terminal faults that cannot be resolved by Tier 2, i.e.,deep-dive diagnosis of handset software/firmware bugs, SIM card profile issues, device-network interoperability problems, and application failures on end-user devices.
• Support terminal-related preventive and corrective maintenance at a specialist level, i.e., device firmware upgrade planning and validation, SIM card profile management, batch device health analysis, and terminal fleet management advisory.
• Provide specialist technical input for terminal system upgrades, new device onboarding, and fleet replacement, i.e.,technical evaluation of new handset/CPE models, firmware validation, and deployment planning support.
• Develop and maintain terminal technical documentation at a specialist level, including deep technical fault analysis reports, device troubleshooting guides for Tier 2 reference, firmware release notes, and device specification documents.
• Provide technical mentorship and knowledge transfer to Tier 2 Maintenance Support Specialists and Engineers on terminal/UE technology, building tier-2 capability to resolve a wider range of terminal issues at the second line.

To be successful in this position, you should meet the following requirements:

• Possess at least one Bachelor’s degree in Electronics or Telecommunications or Information Engineering or equivalent.
• At least five (5) years of operation, administration and maintenance hands-on experience with User Equipment (UE) / terminal devices in 4G or 5G mobile broadband environments, including handsets, CPE, SIM cards, and mission critical device management.
• Excellent command of written & spoken English, Cantonese and Mandarin.
• Strong analytical and problem-solving skills, with proven ability to perform deep root cause analysis of complex terminal faults and propose effective resolutions.
• Excellent teamwork and communication abilities.
• Strong knowledge of terminal device operations & maintenance (O&M) procedures, device lifecycle management, and fleet management best practices.
• Expertise in terminal interoperability testing with mobile networks (4G/5G), IMS/MCX platforms, and various network elements
• Proficient in terminal firmware analysis, device troubleshooting tools, diagnostic protocols, and log analysis.
• Experienced in managing terminal technical documentation, fault analysis reports, and device specification records.
• Ability to provide specialist technical support for escalated terminal incidents and guide Tier 2 staff in complex terminal troubleshooting.
• Strong knowledge with O&M and OAM procedures, ensuring compliance in all maintenance activities.
• Ability to provide specialist technical support for escalated incidents.
• Competence in second‑line operational and maintenance works.
• Skilled in maintaining accurate records of terminal maintenance activities and system status.

When you work:

• 5 days work
• 8 hours/day

What you enjoy:

• Discretionary Performance bonus
• Life insurance
• Medical insurance
• Education subsidies
• Birthday gift
• Marriage leave
• Birthday leave

Please submit your application to us by clicking the APPLY NOW button and send your full resume with your availability, current and expected salary to us. If you do not hear from us within 8 weeks after the application, you may assume that your application has not been successful.

CMHK is committed to be an equal opportunity employer. We offer exceptional benefits package and the opportunity to work in a challenging environment. Personal data provided by applicants will be treated strictly in accordance with our personal data policy and for recruitment purposes only.