Jobs in the United States

25+ jobs

Added just now
Sr. Controls Engineer, Data Center, Colocation Regional Engineering - AMER
Amazon
Herndon, VA
Troubleshoot, conduct Root Cause Analysis (RCA) and create Corrective Action (CA) documentation for site/equipment failures related to control equipment.
Added just now
Senior Electrical Engineer, Data Center Engineering - Electrical Products and Services (DCE-EPS)
Amazon
Herndon, VA
Support of Operations including failure mode and root cause analysis, maintenance and troubleshooting support, and operating procedure review for electrical systems in cooling equipment.
Added just now
Engineer IV
General Atomics
Herndon, VA
Leads or supports technical reviews, design reviews, risk assessments, root-cause investigations, and resolution of complex hardware and firmware issues.
Added 1 min ago
Director - Customer Response Engineering
Trellix
Richmond, VA
Use AI tools in triage, root-cause analysis, and fix development.
Added 1 min ago
Network Operations Engineer
Meta
Richmond, VA
…infrastructure. Work closely with team members to understand the root cause of incidents and contribute to their…
Added 1 min ago
Supplier Quality Engineer - Airfoil Castings
GE Aerospace
Charlottesville, VA · Glen Allen, VA
Review and approve quality plans, investigate quality escapes to provide root cause analysis and ensure effective corrective actions are taken
Added 2 mins ago
A
Quality Engineer
Aerotek
Greenville, SC
- $80,000 to $100,000 USD / year
Lead supplier notification and follow-up for root cause analysis and corrective actions related to nonconforming products or processes.
Added 3 mins ago
G
Electrical Design Engineer
GPAC
Summerville, SC
- $90,000 to $125,000 USD / year
Production Support: Support legacy and new product lines by evaluating component obsolescence, root-cause failure analysis, and continuous quality improvements.
Added 3 mins ago
G
Electrical Design Engineer
GPAC
Goose Creek, SC
- $90,000 to $125,000 USD / year
Production Support: Support legacy and new product lines by evaluating component obsolescence, root-cause failure analysis, and continuous quality improvements.
Added 3 mins ago
Senior Principal Systems Development Engineer
Dell
TX
…hyperscale customers. Lead critical technical investigations, root-cause analysis, and field escalations while influencing future-generation platform…
Added 3 mins ago
G
Electrical Design Engineer
GPAC
Sumter, SC
- $90,000 to $125,000 USD / year
Production Support: Support legacy and new product lines by evaluating component obsolescence, root-cause failure analysis, and continuous quality improvements.
Added 3 mins ago
G
Electrical Design Engineer
GPAC
Florence, SC
- $90,000 to $125,000 USD / year
Production Support: Support legacy and new product lines by evaluating component obsolescence, root-cause failure analysis, and continuous quality improvements.
Added 4 mins ago
G
Electrical Design Engineer
GPAC
Myrtle Beach, SC
- $90,000 to $125,000 USD / year
Production Support: Support legacy and new product lines by evaluating component obsolescence, root-cause failure analysis, and continuous quality improvements.
Added 4 mins ago
RH
Software Engineer
Robert Half
Orlando, FL
- $80 to $85 USD / hour
· Experience supporting production environments, including incident triage, root cause analysis, and deployment support.
Added 4 mins ago
EHS Specialist II - Environmental Compliance
Relativity Space
Cape Canaveral, FL
Conduct in-field audits, inspections, and incident investigations using root cause investigation strategies and provide meaningful corrective action recommendations.
Added 7 mins ago
A
Manufacturing Engineer
Actalent
Redmond, WA
- $70 to $77 USD / hour
Experience with Root Cause Analysis Techniques such as Fishbone, Fault Tree, DMAIC.
Added 7 mins ago
Senior Mechanical Engineer
Actalent
Bellevue, WA
Hands-on experience with testing, troubleshooting, and root-cause analysis of mechanical hardware.
Added 7 mins ago
A
Electronics Engineer
Actalent
Melbourne, FL
- $70 to $85 USD / hour
Troubleshoot hardware issues at both the board and system level, performing lab debugging and root cause analysis to resolve complex problems.
Added 7 mins ago
A
Test Rngineer
Actalent
Merritt Island, FL
- $36 to $43 USD / hour
Participate in root cause analysis and corrective action processes to resolve technical issues and prevent recurrence.
Added 7 mins ago
A
Process Engineer
Actalent
Scottsdale, AZ
- $100,000 to $130,000 USD / year
Lead and support Corrective and Preventive Actions (CAPA) by conducting thorough root cause analysis and implementing effective, sustainable solutions.
Added 8 mins ago
A
Electrical Engineer
Actalent
Rochester, MN
- $28 to $32.1 USD / hour
Assist in planning and executing experiments to support failure analysis and root cause investigations on electronic products and PCBs.
Added 8 mins ago
Cloud DevOps Engineer - AWS & Python
U.S. Bank National Association
Irving, TX
Perform root-cause analysis across cloud infrastructure, application, and delivery environments.
Added 13 mins ago
G
Electrical Design Engineer
GPAC
Pocahontas, AR
- $80,000 to $110,000 USD / year
Production Support: Support legacy and new product lines by evaluating component obsolescence, root-cause failure analysis, and continuous quality improvements.
Added 14 mins ago
Sr. Quality Engineer, New Product Development
BioTissue Holdings Inc
Miami, FL
Demonstrated expertise in root cause analysis and continuous improvement tools.
Added 15 mins ago
Continuous Improvement Engineer
Royal Canin USA Inc
United States
Address the root causes of failures and downtime. Linking the outage, root cause, DMS failure, and action in the plan for the day with the goal of eliminating losses permanently.

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