Jobs in the United States

25+ jobs

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Lead Industrial Construction Estimator
GPAC
Longview, WA
- $160,000 to $200,000 USD / year
We are seeking an experienced Lead Industrial Construction Estimator to lead the development of accurate, competitive cost estimates for industrial construction projects. This individual…
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Lead Industrial Construction Estimator
GPAC
Castle Rock, WA
- $160,000 to $200,000 USD / year
We are seeking an experienced Lead Industrial Construction Estimator to lead the development of accurate, competitive cost estimates for industrial construction projects. This individual…
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Lead Industrial Construction Estimator
GPAC
Winlock, WA
- $160,000 to $200,000 USD / year
We are seeking an experienced Lead Industrial Construction Estimator to lead the development of accurate, competitive cost estimates for industrial construction projects. This individual…
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Lead Industrial Construction Estimator
GPAC
Toledo, WA
- $160,000 to $200,000 USD / year
We are seeking an experienced Lead Industrial Construction Estimator to lead the development of accurate, competitive cost estimates for industrial construction projects. This individual…
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Engineering Manager - Palo Alto, US (hybrid)
Nubank
Palo Alto, CA
We strive for state-of-the-art software development practices, that currently includes a variety of technologies. While we value candidates that are familiar with them, we are also…
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Lead Industrial Construction Estimator
GPAC
Chehalis, WA
- $160,000 to $200,000 USD / year
We are seeking an experienced Lead Industrial Construction Estimator to lead the development of accurate, competitive cost estimates for industrial construction projects. This individual…
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Lead Industrial Construction Estimator
GPAC
Tumwater, WA
- $160,000 to $200,000 USD / year
We are seeking an experienced Lead Industrial Construction Estimator to lead the development of accurate, competitive cost estimates for industrial construction projects. This individual…
Added just now
Quality Assurance Manager
BERNATELLO'S PIZZA INC.
Waupaca, WI
…the specific department: physical assets, management, skill development and training of direct reports, departmental organization as required, culture, leadership, and continuous…
Added 1 min ago
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IT Recruiter
Robert Half
Minneapolis, MN
- $45 to $55 USD / hour
Build and maintain candidate pipelines for positions such as product managers, designers, information security specialists, cloud professionals, and software engineering talent.
Added 1 min ago
Technical Customer Support Lead
Robert Half
Auburn, NH
Partner with internal groups such as Development, DevOps, and Quality Assurance to speed up issue resolution and remove blockers.
Added 1 min ago
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Lead Industrial Construction Estimator
GPAC
Olympia, WA
- $160,000 to $200,000 USD / year
We are seeking an experienced Lead Industrial Construction Estimator to lead the development of accurate, competitive cost estimates for industrial construction projects. This individual…
Added 1 min ago
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Lead Industrial Construction Estimator
GPAC
Dupont, WA
- $160,000 to $200,000 USD / year
We are seeking an experienced Lead Industrial Construction Estimator to lead the development of accurate, competitive cost estimates for industrial construction projects. This individual…
Added 1 min ago
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Lead Industrial Construction Estimator
GPAC
Tacoma, WA
- $160,000 to $200,000 USD / year
We are seeking an experienced Lead Industrial Construction Estimator to lead the development of accurate, competitive cost estimates for industrial construction projects. This individual…
Added 1 min ago
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Construction Estimator
GPAC
Marshall, MN
- $22 to $25 USD / hour
· Identify value engineering and cost-saving opportunities without sacrificing quality
Added 1 min ago
Sr Software Engineer
Gartner
Irving, TX · Stamford, CT
Collaborate with principal and lead software engineers and engineering managers to define technical tasks for user stories leading to efficient technical refinement and delivery.
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Design Build HVAC Project Manager
GPAC
Houston, TX
- $110,000 to $145,000 USD / year
The Project Manager leads design build and design assist HVAC projects, working with engineering and preconstruction from early design through closeout.
Added 1 min ago
Head of Sales, SLED
Blitzy
Cambridge, MA
Blitzy is a Cambridge, MA based AI software development platform on a mission to revolutionize the software development life cycle by autonomously building custom software to unlock the…
Added 1 min ago
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Software Engineer
Robert Half
Memphis, TN
- $70 to $85 USD / hour
Required Qualifications Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a related field. 3+ years of detail oriented experience developing…
Added 1 min ago
Director, Software Engineering
Partner ESI
Torrance, CA
Strong software engineering and architecture background in modern web and enterprise application development.
Added 1 min ago
Senior Project Manager - Water/Wastewater Services
CDM Smith
Phoenix, AZ
…water resources projects in Arizona and assist with business development activities. CDM Smith has been providing services to the Arizona market for over 20 years and has a local office…
Added 2 mins ago
Data Analyst
Salute Inc.
United States
…assisting with data preparation, validation, analysis, dashboard development, and reporting. This role contributes to both regional and global analytics projects while supporting the data…
Added 2 mins ago
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Front End Software Engineer
HIGH BRIDGE CONSULTING LLC
Vienna, VA
- $100,000 to $140,000 USD / year
The Software Engineer / Technical Delivery Lead will provide hands-on software development and drive technical delivery for a suite of applications supporting a federal project. The role…
Added 2 mins ago
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Water-Wastewater Engineer
GPAC
Seattle, WA
- $100,000 to $135,000 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 2 mins ago
Vulnerability Researcher
Two Six Technologies
Arlington, VA
…Technologies in Arlington, Virginia, where we push the boundaries of software and firmware reverse engineering to uncover vulnerabilities in wireless and embedded systems. As part of our…
Added 2 mins ago
Senior Vulnerability Researcher
Two Six Technologies
Arlington, VA
…Technologies in Arlington, Virginia, where we push the boundaries of software and firmware reverse engineering to uncover vulnerabilities in wireless and embedded systems. As part of our…

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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