Jobs in the United States

25+ jobs

Added 1 min ago
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Software Engineer II
Starkey
Eden Prairie, MN
- $78,540 to $105,000 USD / year
Join Starkey as a Software Engineer II and play a key role in developing innovative software systems that directly impact cutting-edge hearing technology. This role offers the opportunity…
Added 1 min ago
Associate RF Hardware Systems Engineer
Eridan
Sunnyvale, CA
Help design the communication technologies that connect today's robots and power the physical AI era.
Added 2 mins ago
Full-stack Engineer 4
Capital One
Richmond, VA
Provide technical leadership and direction across Agile teams, setting standards for design, development, and operational excellence
Added 2 mins ago
Full-stack Engineer 5 (Sr. Lead / Sr. Manager IC)
Capital One
McLean, VA · Richmond, VA · NY · Wilmington, DE
Drive end-to-end design and implementation of large-scale, distributed, or cloud-native systems with high reliability and performance requirements
Added 2 mins ago
Full-stack Engineer 4
Capital One
Plano, TX
…auto loan. Leveraging a modern full-stack ecosystem, you will engineer critical infrastructure-from reimagining core payment and ledger systems to developing compassionate platforms that…
Added 2 mins ago
Full-stack Engineer 5
Capital One
Plano, TX
…auto loan. Leveraging a modern full-stack ecosystem, you will engineer critical infrastructure-from reimagining core payment and ledger systems to developing compassionate platforms that…
Added 2 mins ago
Full-stack Engineer 4 (Global Payment Network)
Capital One
Riverwoods, IL · Chicago, IL
Provide technical leadership and direction across Agile teams, setting standards for design, development, and operational excellence
Added 2 mins ago
AI Engineer 4 (Gen AI Platform Services)
Capital One
San Francisco, CA · McLean, VA · Cambridge, MA · San Jose, CA · NY
Design, develop, test, deploy, and support AI software components including foundation model training, large language model inference, agents and multi-agent workflows, similarity search,…
Added 4 mins ago
Mechanical Product Design Engineer I
Detroit Diesel Corporation
Detroit, MI
…fluids. This team takes pride in our global collaboration to design, test and release global powertrain technologies to the North American commercial vehicle…
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Transportation Engineer
GPAC
Dallas, TX
- $80,000 to $125,000 USD / year
We are seeking a Transportation Engineer to join a dynamic, multi-disciplinary engineering consulting firm. This individual will contribute to the planning, design, and delivery of…
Added 4 mins ago
Supplier Quality Engineer II
St. Jude Medical, Cardiology Division, I
MN
Supplier Quality Engineer II drives improvement and corrective action in the quality of components sourced from outside suppliers. Provides technical
Added 4 mins ago
Senior Development Quality Engineer
St. Jude Medical, Cardiology Division, I
CA
The Senior Development Quality Engineer assures new or modified products conform to quality standards and establishes compliance with the quality system. Responsible for maintaining a…
Added 4 mins ago
Sr. Software Engineer
Exact Sciences Corp
United States
The Senior Software Engineer is a hands-on builder within the product-led Software Engineering team in Abbott’s cancer diagnostics division, focused on Digital Engineering and Integrations.…
Added 4 mins ago
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Water-Wastewater Engineer
GPAC
Dallas, TX
- $80,000 to $125,000 USD / year
We are seeking a Water/Wastewater Engineer to join a growing, multi-disciplinary engineering consulting firm. This individual will contribute to the planning, design, and delivery of…
Added 6 mins ago
Summer 2027 Nuclear Fuels Intern - Warrenville, IL
Constellation Energy Generation, LLC.
Warrenville, IL
Control Circuit Wiring Design for Feedwater Pump
Added 6 mins ago
Geotechnical Project Manager
ECS Ltd
Lexington, SC
A professional Engineer (P.E.) or Professional Geologist (P.G.) is preferred
Added 6 mins ago
Geotechnical Assistant Department Manager
ECS Ltd
Greenville, SC
Professional Engineer (P.E.) or Professional Geologist (P.G.) license preferred
Added 6 mins ago
Project Engineer - Development Engineering
Rolls-Royce
United States
Job Title: Project Engineer - Development Engineering
Added 7 mins ago
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Civil Design Engineer
GPAC
Houston, TX
- $80,000 to $100,000 USD / year
We are seeking a talented and motivated Civil Design Engineer to join our growing team. This individual will be responsible for the design and development of land development and…
Added 7 mins ago
Construction Project Manager
Milhaus
Kansas City, KS
Enforce that project specifications and design are met and adhered to
Added 8 mins ago
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Engineer II - Forward Deployed Engineer
GlaxoSmithKline LLC
Remote, United States
- $131,175 to $218,625 USD / year
GSK's Enterprise AI team builds AI solutions that prove value fast and scale to production. The Engineer II is a senior individual contributor who takes full ownership of FDE engagements…
Added 9 mins ago
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Gas Strategic Planning Engineer (Staff, Senior, or Principal) - Denver, CO
Xcel Energy Services Inc
Denver, CO
- $81,800 to $156,600 USD / year
Coordinates/leads multiple projects or portions of projects (including phases such as research, design, equipment selection, procurement, installation and commissioning). May lead more…
Added 9 mins ago
Senior Salesforce Developer
MedSpeed
Elmhurst, IL
The Senior Salesforce Engineer will spend most of their time writing code and be responsible for developing, maintaining, and modernizing an established Salesforce platform supporting live…
Added 9 mins ago
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Electrical Engineer (Prism)
Northwood Space
Los Angeles, CA, CA
- $125,000 to $145,000 USD / year
Northwood is looking for an Electrical Engineer to own the non-RF electronics design for Prism, our 2.4-meter parabolic antenna for high-throughput satellite links. You will design the…
Added 10 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…

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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