Jobs in the United States

25+ jobs

Added 2 mins ago
Senior Closures Systems Sealing Engineer
Ford
Long Beach, CA · Long Beach
The Senior Closures Systems Sealing Engineer will be a key member responsible for the design, development, and integration of closure mechanisms and primarily sealing for Advanced EV…
Added 2 mins ago
A
Smt Engineer
Actalent
Harrodsburg, KY
- $110,000 to $140,000 USD / year
This SMT Engineer role focuses on developing and optimizing surface mount technology (SMT) processes to support high-quality electronic manufacturing. You will investigate and implement new…
Added 2 mins ago
Sr. Associate, Software Engineering
L3Harris Technologies
Carlsbad, CA · Salt Lake City, UT
L3Harris is seeking a Software Engineer focused on system software development for embedded devices and communication systems. This role contributes across the full software development…
Added 3 mins ago
Software Engineer 2
Humana
Frankfort, KY
The Software Engineer 2 develops, tests, and maintains software applications that support business and technology objectives. The associate works on moderately complex assignments,…
Added 3 mins ago
Software Engineer
Humana
Frankfort, KY
We are seeking a Software Engineer with experience developing, testing, and supporting production applications. The preferred candidate will have exposure to Epic or a similar healthcare…
Added 3 mins ago
Network Operations Engineer
Meta
Frankfort, KY
Meta is seeking a Network Operations Engineer to join our Edge and Network Services (ENS) Foundation NetOps team. In this role, you will utilize your knowledge in hyperscale data center…
Added 3 mins ago
R&D Engineer Hardware 4
Broadcom Corporation
United States
Job Title: Principal Machine Learning & Silicon Yield Engineer
Added 3 mins ago
Senior Lead Engineer
PwC
Louisville, KY
As a Senior Lead Engineer you will lead custom application development and testing efforts that help clients turn business needs into scalable software solutions across cloud-native and…
Added 3 mins ago
Senior Engineer
PwC
Louisville, KY
As a Senior Engineer you will help design, build, and test custom applications within our Advisory practice, bringing together software engineering, cloud-based solution delivery, and…
Added 3 mins ago
EG
QA Automation Engineer
Eliassen Group
Frankfort, KY
- $75 to $82 USD / hour
Our client seeks a QA professional to conduct functional testing, load testing, usability testing, continuous integration, and code reviews. The role will contribute to requirement…
Added 3 mins ago
MTS Software Development Engineer
Advanced Micro Devices, Inc
Santa Clara, CA
…Development Engineers to Research, design, develop, and/or test operating systems-level software, compilers, and/or network distribution software for semiconductor operations, applying…
Added 3 mins ago
MTS Systems Engineer
Advanced Micro Devices, Inc
Austin, TX
Job Role and Responsibility: Xilinx, Inc., a subsidiary of AMD, Inc., is hiring MTS Systems Engineer to Research, design, develop, and/or test electronic components and systems for…
Added 4 mins ago
MTS Silicon Design Engineer
Advanced Micro Devices, Inc
San Jose, CA
Job Role and Responsibility: Xilinx, Inc., a subsidiary of AMD, Inc., is hiring MTS Silicon Design Engineer to Research, design, develop, and/or test electronic components and systems for…
Added 4 mins ago
MTS Silicon Design Engineer
Advanced Micro Devices, Inc
Boxborough, MA
Job Role and Responsibility: AMD, Inc. is hiring MTS Silicon Design Engineer to Research, design, develop, and/or test electronic components and systems for semiconductor and related device…
Added 4 mins ago
MTS Silicon Design Engineer
Advanced Micro Devices, Inc
Boxborough, MA
Job Role and Responsibility: AMD, Inc. is hiring MTS Silicon Design Engineer to Research, design, develop, and/or test electronic components and systems for semiconductor and related device…
Added 4 mins ago
Sr. Manager Product Development Engineer
Advanced Micro Devices, Inc
Austin, TX
Job Role and Responsibility: AMD, Inc. is hiring Sr. Manager Product Development Engineer to Develop and/or test electrical/electronic components and/or systems for semiconductor products.…
Added 4 mins ago
SMTS Software Development Engineer
Advanced Micro Devices, Inc
Austin, TX
Job Role and Responsibility: AMD, Inc., is hiring SMTS Software Development Engineer to Work with AMD’s architecture specialists to improve future products. Apply a data minded approach to…
Added 4 mins ago
MTS Silicon Design Engineer
Advanced Micro Devices, Inc
Austin, TX
Job Role and Responsibility: AMD, Inc., is hiring MTS Silicon Design Engineer to Research, design, develop, and/or test electronic components and systems for semiconductor and related…
Added 4 mins ago
Sr. Software Development Engineer
Advanced Micro Devices, Inc
Austin, TX
Job Role and Responsibility: AMD, Inc. is hiring Sr. Software Development Engineer to research, design, develop, and test high-performance collective communication libraries, GPU…
Added 4 mins ago
MTS Silicon Design Engineer
Advanced Micro Devices, Inc
Austin, TX
Job Role and Responsibility: AMD, Inc., is hiring MTS Silicon Design Engineer to Research, design, develop, and/or test electronic components and systems for semiconductor and related…
Added 4 mins ago
Sr. Silicon Design Engineer
Advanced Micro Devices, Inc
Orlando, FL
Job Role and Responsibility: AMD, Inc., is hiring Sr. Silicon Design Engineer to Research, design, develop, and/or test electronic components and systems for semiconductor and related…
Added 4 mins ago
SMTS Software Development Engineer
Advanced Micro Devices, Inc
Santa Clara, CA
Job Role and Responsibility: AMD, Inc. is hiring SMTS Software Development Engineer to Research, design, develop, and/or test operating systems-level software, compilers, and/or network…
Added 4 mins ago
MTS Silicon Design Engineer
Advanced Micro Devices, Inc
San Jose, CA
Job Role and Responsibility: Xilinx, Inc., a subsidiary of AMD, Inc., is hiring MTS Silicon Design Engineer to Research, design, develop, and/or test electronic components and systems for…
Added 4 mins ago
MTS Silicon Design Engineer
Advanced Micro Devices, Inc
Austin, TX
Job Role and Responsibility: AMD, Inc., is hiring an MTS Silicon Design Engineer to Research, design, develop, and/or test electronic components and systems for semiconductor and related…
Added 4 mins ago
Silicon Design Engineer
Advanced Micro Devices, Inc
San Diego, CA
Job Role and Responsibility: AMD, Inc., is hiring Silicon Design Engineer to Research, design, develop, and/or test electronic components and systems for semiconductor and related device…

Modem System Test Engineer - Wireless Technologies and Ecosystems |

CA, United States

The base pay range for this role is between $150,400 and $277,600, and your base pay will depend on your skills, qualifications, experience, and location.

Apply About employer

Applications open in a new tab.

Job details

Pay: The base pay range for this role is between $150,400 and $277,600, and your base pay will depend on your skills, qualifications, experience, and location.
Posting language: English
Posted: Nov 6, 2026

Original job description

Summary Join the Wireless Technologies and Eco-Systems (WTE) team and drive wireless innovations that impact millions of users worldwide! We design, validate, and integrate cutting-edge wireless technologies that enrich everyday experiences across our entire product ecosystem.

We are seeking a passionate, detail-oriented Modem Systems Test Engineer with a focus on Wireless Coexistence (COEX). In this role, you will be at the forefront of validating multi-radio platforms ensuring seamless concurrent operation between cellular technologies (LTE, 5G NR FR1/FR2) and adjacent radios such as Wi-Fi, Bluetooth, Ultra-Wideband (UWB), and GNSS. If you thrive in a fast-paced environment solving complex cross-radio interference, desense, and protocol arbitration challenges, we would love to hear from you.

Description In this role, you will be responsible for end-to-end system testing, performance characterization, and failure triage of advanced cellular baseband and multi-radio coexistence features. You will bridge baseband protocol software, RF hardware, and connectivity systems to guarantee robust real-world performance under hostile interference conditions.

You will rely on deep trace analysis, lab simulation, RF instrumentation, and automation to uncover edge-case performance degradation, desense mechanisms, and protocol timing collisions. Working cross-functionally with system architecture, firmware, protocol development, RF design, and carrier engineering, you will drive test coverage, root-cause complex issues, and influence system-level mitigation designs.

Responsibilities

Coexistence Test Design & Execution: Define, develop, and execute comprehensive test plans targeting in-device coexistence (IDC), inter-radio arbitration, multi-SIM / multi-active scenarios, and concurrent multi-band operation (LTE/5G NR with Wi-Fi, Bluetooth, UWB, and GNSS).

RF & Protocol Root-Cause Analysis: Analyze baseband protocol traces (PHY, MAC, RLC, PDCP, RRC), air-interface captures, and RF measurements to root-cause desense, throughput degradation, scheduling conflicts, dropped calls, and handover anomalies.

Mitigation & Feature Validation: Evaluate and validate dynamic coexistence mechanisms, including power back-off, time-division multiplexing (TDM) / frequency-division multiplexing (FDM) filtering, antenna switching/sharing, and adaptive link management.

Intelligent Test Automation: Develop robust, scalable test automation scripts and post-processing analytics pipelines in Python to automate test execution, KPI aggregation (BLER, throughput, latency), and anomaly detection.

Testbed & Environment Integration: Set up, calibrate, and maintain sophisticated lab testbeds incorporating cellular network emulators (call boxes), RF matrix switches, combiners, spectrum analyzers, and wireless channel emulators.

Cross-Functional Collaboration: Partner closely with baseband firmware, connectivity software, RF systems engineering, and hardware teams to reproduce lab/field defects, validate fixes, and verify 3GPP and internal performance specifications.

Minimum Qualifications Education: Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, Telecommunications, or a related field.

Cellular Protocol Stack Expertise: Deep technical understanding of 3GPP LTE and 5G NR (Rel-15/16+) across Layer 1 (PHY), Layer 2 (MAC/RLC/PDCP), and Layer 3 (RRC/NAS).

Coexistence & RF Fundamentals: Strong grasp of RF transceiver architectures, in-device coexistence (IDC), antenna isolation, harmonics, intermodulation distortion (IMD), receiver desense, and multi-radio interference mitigation techniques.

Hands-on Validation Experience: Proven track record of system test, integration, or validation using commercial wireless network emulators (e.g., Keysight, Rohde & Schwarz, Anritsu) and RF instrumentation (spectrum analyzers, signal generators, power meters).

Automation & Scripting: Strong proficiency in Python for test automation, instrument control (SCPI/VISA), and automated parsing/analysis of large log datasets.

Analytical Problem Solving: Demonstrated capability to triage and root-cause multi-layer failures across hardware, firmware, and protocol interactions.

Preferred Qualifications Prior experience testing Dual-SIM / Dual-Active (DSDS/DSDA) or complex Cellular scenarios with simultaneous connectivity radios. Working knowledge of 3GPP in-device coexistence specifications (e.g., Rel-11+ IDC mechanisms, autonomous denial, auxiliary information reporting). Experience with non-cellular wireless standards (Wi-Fi 6/6E/7 - 802.11ax/be, Bluetooth 5.x, UWB, NFC, GNSS). Familiarity with data analysis and visualization libraries (Pandas, NumPy, Plotly/Matplotlib) for large-scale test KPI dashboards. Contributions to 3GPP standardization (RAN4, RAN5) or carrier certification testing for coexistence and performance. Proficiency in diagnosing complex system-level issues through lab/field experimentation, analytics, and log analysis. Excellent analytical & critical thinking skills, Excellent communication & interpersonal skills.

Pay & Benefits At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $150,400 and $277,600, and your base pay will depend on your skills, qualifications, experience, and location.

Apple employees also have the opportunity to become an Apple shareholder through participation in Apple’s discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple’s Employee Stock Purchase Plan. You’ll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits

Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

EEO Statement Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant

Accessibility At Apple, we believe accessibility is a fundamental human right. You’ll find that idea reflected in everything here - in our culture, our benefits and our digital tools. By welcoming as many perspectives as possible, we help you build a career where you feel like you belong.

Learn about accessibility in Apple’s workplace

Learn about reasonable accommodations for job applicants

Application Deadline Apple accepts applications to this posting on an ongoing basis.

Apply About employer

More about this job

Skills

Hardware testing methods
Firmware
Root cause analysis
Test automation
Python
Electrical engineering
Computer engineering
NAS
Problem solving
Reporting
Data analysis
NumPy
Critical thinking
Communication skills
Interpersonal skills

Report this job