Test Base Station Designer - Wireless Technologies & Ecosystems

Summary

The people here at Apple don’t just build products— they craft the kind of wonder that has revolutionized entire industries. It’s the diversity of those people and their ideas that inspires the innovation that runs through everything we do, from amazing technology to industry-leading environmental efforts. Imagine what you could do here. Join Apple, and help us leave the world better than we found it. A job at Apple is unlike any other you’ve had. You will be challenged. You will inspired. And you’ll be proud! At Apple, great ideas have a way of becoming great products, services, and customer experiences very quickly. Bring passion and dedication to your job and there's no telling what you could accomplish. Join the Wireless Technologies and Ecosystems organization and be part of an outstanding team of engineers, working with multi-functional teams to drive innovation and develop products used by millions worldwide. We are looking for a highly reciprocal individual who can excel in a high-paced environment. Be ready to make something extraordinary when you come here. Dynamic, encouraging people and innovative, industry-defining technologies are the norm at Apple. The people who work here have reinvented and defined entire industries with our products and services. The same real passion for innovation also applies to our business practices - strengthening our dedication to leave the world better than we found it. You should join Apple if you want to help deliver the next amazing Apple product.

Minimum Qualifications

BS and a minimum of 5+ years relevant industry experience. A good understanding of cellular protocol stacks, particularly 5G. Knowledge of cellular communication standards: 6G, 5G NR, 4G LTE, PHY Downlink/Uplink channels and signals. Software development experience and debugging skills in C/C++. Experience with multi-processing and multi-threading based implementations. Good fundamentals in object-oriented SW design and test techniques and methodologies.

Preferred Qualifications

Master’s or PhD degree in wireless communication or electrical engineering. Strong understanding of cellular Downlink/Uplink procedures - PDCCH/PDSCH/RACH, DCI, Scheduling Request, HARQ, SRS, CSI, Link adaptation and other scheduler algorithms. Experience in investigating and troubleshooting scheduler issues to optimize the performance of Cellular implementation. Strong analysis and debugging capabilities to diagnose issues and collaborate with development and systems design teams to resolve them. Deep understanding of software engineering principles and core computer science fundamentals. Proficient in scripting or programming languages such as Python and C/C++. A solid grasp of automation tool chain. Working knowledge of various 4G/5G signaling and protocol test equipment (including Keysight, Anritsu, and R&S) and their automation interfaces. Solid knowledge in Layer 2/Layer 3/ NAS and network performance optimization (a plus). Experience with network emulators, silicon prototyping, emulation systems, and virtual platforms a plus. Strong written and verbal communication skills with the ability to articulate complex technical concepts. Ability to modernize legacy systems and adapt to new AI architectures. Highly motivated and self-directed, fast learner, a good team player. Excellent verbal and written communication skills.

Description

This role requires critical expertise in multiple layers in cellular protocols, experience with UE and/or NW protocols development for various 3GPP technologies is essential. The candidate must demonstrate solid understanding of relevant protocol procedures and network interactions. The duties of this position will include design, develop, and maintain network simulation. You will need to understand the 4G/5G protocols functionality in the respective 3GPP releases and convert that into corresponding protocol implementation and interfaces in the Cellular network simulation systems domain.

Responsibilities

Specify, design, and implement Scheduler software of Test Base Station. Implement key scheduling, control processing in tight timeline, latency, and energy constraints. Development of pre-silicon emulation systems/virtual platforms to use in pre-silicon Layer1 Control SW design and verification. Evaluate and implement leading edge tools for build, verification, and test. Define methodologies and standards. Guide test executors in performing validation of new and existing features.