Jobs in the United States

25+ jobs

Added 24 mins ago
NS
Electrical Engineer (New Grad)
Northwood Space
Los Angeles, CA, CA
- $104,000 to $121,000 USD / year
Northwood is looking for an Electrical Engineer to help drive the development of our digital compute and power electronics. These complex digital systems ensure that our antennas can meet…
Added 34 mins ago
Prototype Trim Developer
Ford
Dearborn, MI · Dearborn
3+ years of experience with digital cutting software and hardware
Added 44 mins ago
Principal Software Engineer - Robotics & Physical AI Simulation
Irving, TX
…challenges. Construction autonomy and Physical AI require trusted digital twins, high-fidelity simulation, scalable GPU computing, intelligent automation, and rigorous…
Added 52 mins ago
I&T Systems Engineer Staff
Lockheed Martin
King of Prussia, PA
…Software Defined Radios (SDRs), high powered Radio Frequency (RF) Digital Signal Processing (DSP) hardware (HW), and modern DevSecOps to achieve their goals and dominate the RF…
Added 1 hour ago
IS
Staff Digital Signal Processing Engineer
Impulse Space
Redondo Beach, CA
- $145,000 to $185,000 USD / year
We are seeking a highly skilled Staff DSP Engineer to lead the development, implementation, and verification of advanced signal-processing algorithms for high-performance communication…
Added 1 hour ago
Systems Engineer
Mind Robotics
Palo Alto, CA
…tackle difficult problems. Join us if you want to move beyond digital intelligence and put intelligence into…
Added 1 hour ago
Embedded Software Engineer
CFO Trane U.S. Inc.-CFO
Clarksville, TN · La Crosse, WI
A sustainable future demands ongoing digital advancement. Our digital solutions team leads the way in developing next-generation climate technology focused on reducing demand-side energy…
Added 1 hour ago
WD
Lead Software Engineer
Walt Disney Attractions Technology LLC
Lake Buena Vista, FL
- $148,300 to $198,800 USD / year
“We Power the Magic!” That’s our motto at Disney Experiences (DX). Our team creates world-class immersive digital experiences for the Company’s premier vacation brands including Disney’s…
Added 1 hour ago
Electronic Test Technician - 1st Shift (Onsite)
RTX
United States
…& performing the troubleshooting & failure analysis of the hardware under test, & to perform other tasks as defined by the Senior Test Engineer or the Test Department…
Added 1 hour ago
Prototype Trim Developer
Ford Global
Dearborn, MI
3+ years of experience with digital cutting software and hardware
Added 1 hour ago
Principal Electrical Engineer – Power Electronics & CT Architecture
GE Medical Systems, L.L.C.
United States
We're looking for an experienced Power Electronics Engineer who enjoys solving complex system-level problems and wants to stay actively involved in the engineering work. This is a hands-on…
Added 2 hours ago
E
Embedded Software Engineer
Emerson
Shakopee, MN
- $80,000 to $114,000 USD / year
Join our Liquid Analysis team in Shakopee, MN, as an Embedded Software Engineer, where you’ll contribute to new product development and sustaining engineering for process analytical…
Added 2 hours ago
E
Principal Embedded Software Engineer
Emerson
Shakopee, MN
- $150,000 to $200,000 USD / year
Join our Liquid Analysis team in Shakopee, MN, as a Principal Embedded Software Engineer, where you'll focus primarily on new product development while also supporting sustaining…
Added 2 hours ago
Android Platform Engineer
Capgemini
Santa Clara, CA, CA
Join Capgemini as an Android Platform Engineer supporting the development of next-generation In-Flight Entertainment (IFE) platforms. In this role, you will help bring up, integrate, and…
Added 2 hours ago
Hardware Design Engineer Intern
Emerson
Round Rock, TX
Do you want to design the physical hardware that measures and controls the world’s most critical industrial processes? Emerson’s Process Systems and Solutions business develops automation…
Added 2 hours ago
08 - Lead Engineer, Manufacturing Equipment
Celestica
Richardson, TX
The Lead Engineer, Manufacturing Equipment is responsible for the development and/or sourcing of manufacturing equipment to support manufacturing operations goals. Scope of job may include…
Added 2 hours ago
TH
Field Service Technician II Full Time
Texas Health Resources
Arlington, TX
- Full-time
In-House service engineer supporting Diagnostic Imaging Equipment
Added 2 hours ago
Digital IC Design Engineer | BGP
Texas Instruments
Dallas, TX
Digital designers bring silicon to life. In this role you will define, develop, and refine the digital portion of battery gauge mixed signal SOCs - translating system intent into…
Added 2 hours ago
Applications Engineer | MPP
Texas Instruments
Dallas, TX
…the market is fast growing. We're searching for applications engineer who have the passion and excitement to grow, innovative, take an active role in product definition, execute the…
Added 2 hours ago
Staff Engineer
Audacy
Houston, TX
Audacy is seeking a talented Regional Staff Engineer to join our Houston-based engineering team. This hands-on role is ideal for a proactive professional with robust radio broadcast…
Added 2 hours ago
Applications Engineer Intern
Emerson
Austin, TX
Creating proof-of-concepts with T&M NI hardware and software for demonstrations to customers
Added 2 hours ago
Security Engineer - Apple Pay
Apple
Austin, TX
…user-experience. We work on Payments, Transit, Access, & Identity, across hardware, software, and server. If you're passionate about digital security and customer safety, we may have the…
Added 2 hours ago
SENIOR EMBEDDED SOFTWARE ENGINEER
MedAcuity
Westford
We seek a passionate and seasoned Embedded Software Engineer who is interested in playing a key role in the cutting edge MedTech space. As a Senior Embedded Software Engineer with us, you…
Added 2 hours ago
Systems Engineer - Electronic Security Systems
Chenega Corporation
Falls Church, VA
The Systems Engineer, Electronic Security Systems (ESS) serves as the senior technical authority responsible for the engineering, integration, sustainment, modernization, and continuous…
Added 2 hours ago
TT
Electrical & Computer Engineer
True Talent Solutions Partners
Los Angeles, CA
- $120,000 to $220,000 USD / year
Join a small, fast-growing aerospace and defense technology team as its first dedicated electrical engineer. You will own the flight computer for an upcoming satellite mission and…

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.

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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.

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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

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