Lenovo

Key Responsibilities:

Experience:

3-7 years of hands-on experience working in the Modem protocol, with a strong foundation in C, C++ programming languages. The candidate should possess a solid understanding of Modem Protocol Stack, as well as good understanding of Android OS & Telephony Framework. This individual will play a key role in the development and maintenance of cutting-edge software solutions.

Qualifications:

1. Bachelor's or Master's degree in Computer Science, Electrical/Electronics Engineering, or a related field.

2. Experience between 3 to 7 years in software development.

3. Hands-on experience with UMTS/LTE/5G NR (SA, NSA) Modem protocol stack. (NAS/MM/GMM/EMM/ESM/RRC/MAC/RLC/PDCP/L1) development or debugging.

4. Experience with IMS-related technologies (SIP/VOLTE/VOWIFI/VILTE/SMS/VONR/VINR).

5. Proficient in using Configuration management tools like Gerrit/Git.

6. Familiarity with QXDM Chipsets/tools (QCAT, QXDM, etc) or MTP (ELT, etc) chipsets.

7. Preferable experience with advanced tools like Wireshark.

8. Knowledge of analyzing data throughput issues is preferable.

Skill Set

1. Debug Mobile side issues from Modem protocol stack perspective.

2. Debug issues from UMTS/LTE/5G NR (SA, NSA) protocol stack (NAS/MM/GMM/EMM/ESM/RRC/MAC/RLC/PDCP/L1) or from IMS perspectives (SIP/VOLTE/VOWIFI/VILTE/SMS/VONR/VINR).

3. Analyze issues from end to end and locate the module/area of the problem.

4. Raise support tickets with Qualcomm or MTK and follow up until the issue is fixed or root caused.

5. Implement appropriate fixes based on suggestions from Qualcomm/MTP, if necessary.

6. Interact with team members to understand similar issues observed in earlier products and make decisions accordingly.

7. Collaborate with other components like RIL/Framework/SIM during root cause analysis.

8. Analyze and root cause Critical Milestone issues within 24 hours.

9. Analyze and understand Network signaling (Live/TE) to root cause issues.