苹果Cellular RF SW Engineer
任职要求
Minimum Qualifications • MS degree with more than 1 years’ experience in wireless software development. • In-depth knowledge of mobile communications in 2G/3G/4G and preferably 5G mmW and sub-6. • Strong skills in software development and debugging. Preferred Qualifications • Experience in wireless baseband systems. • Familiar with embedded system programming. • Collaborative and creative mindset to take up challenges. • Good verbal and written communication skills. • Extensive knowledge and hands on experiences with Baseband Modem technology would be a PLUS. • Apple is an equal opportunity employer that is committed to inclusion and diversity, and thus we treat all applicants fairly and equally. Apple is committed to working with and providing reasonable accommodation to applicants with physical and mental disabilities.
工作职责
Bring up iPhone/iPad modem systems in close collaboration with other baseband teams and hardware teams. Build, develop and optimize firmware control and adaption algorithm to improve field performance, factory yield and testability. Making validation plan and validate the cellular firmware on different platforms.
Lead multi-functional Wireless engineering teams through the NPI process, from prototype to mass production. Serve as the primary Wireless technical leader for products and manufacturing sites. Collaborate with development teams early in the product development lifecycle to define and implement RF Design at both board and system levels. Drive project build plans for development and material preparation. Coordinate multi-functional teams for failure/root cause analysis and implement corrective action measures. Act as the main contact for wireless tests and processes with Contract Manufacturers. Present RF design & test status and corrective actions to technical staff and executive management clearly and concisely. Work with and drive vendors, integrating their deliverables and schedules into the project. Partner with Operations to ensure a smooth transition from NPI to mass production. Lead a sophisticated and constantly evolving environment requiring efficient and timely decision-making. Frequent travel is expected (30-40+%).
Candidate will contribute to a multifaceted software suite based on C/C++. Candidate will develop algorithms and solutions to validate and characterize RF/Wireless system performance. Candidate will develop new features to improve the RF automation testing system. Candidate will build script for the RF test data analyzing and processing. Candidate will analyze results in conjunction with multi-functional teams to identify and root cause issues.
You will be hands-on, relying upon diagnostics, analytics, lab/field experimentations as well as code/architecture review to exploit the opportunities for improvement. You will work with platform architecture, standardization, firmware/protocol development, system test & carrier engineering teams to drive improvement proposals and baseband optimizations. Our members enjoy the flexibility to be involved in all aspects of Protocol software - PHY, RF, SIM, NAS, AS, IP, TCP/UDP and iOS interfaces, to ensure the most robust and customer friendly software. - Responsible for interoperability functions across cellular infrastructure vendors. - Oversee all infrastructure vendors and their technical operations. - Responsible for deep vendor engagement from Roadmap feature alignment required for development tests to planning, execution, reporting and technical alignments with vendors. - Report to higher management of progress made, issues seen, solutions found and next steps. Design test specifications across 3GPP specifications encompassing radio access technologies like GSM, WCDMA, LTE and 5G (SA and NSA) and core technologies related to EPC and IMS. - Perform deep-dives with infrastructure vendors to understand the implementation features with an IOT impact to the device and KPI hits to operators. - Engage with Software developers in the Org to understand new features and enhancements that we bring into our products including features which may already be in the standard specifications (like 3GPP) or introduced on top of existing framework. - Run tests and validate existing software architecture and implementation and suggest key changes and upgrades to enhance it further. - Gauge the Functional and Performance impacts of baseband to various Applications running on our products which is key to great user experience. - Perform comparative device testing and analysis of a suite of apps against different software builds as well as against different infrastructure network deployment configurations.
- We expect you contribute to a multi-faceted software suite based on C/C++. - You will be joining the design and validation of RF calibration/testing algorithms. - You will be working on leading wireless standards. - You will be responsible for the design, validation and optimization of RF system level performance. - You will analyze results in conjunction with multi-functional teams to identify and root cause RF issues.