Jobs in the United States

25+ jobs

Added just now
Network Engineer
BOOZ, ALLEN & HAMILTON, INC.
Norfolk, VA
We are seeking a dedicated Network Engineer to support the design, deployment, and maintenance of enterprise and tactical networks for the Department of Defense ( DoD ) . This role is an…
Added just now
EG
Staff AI & Data Engineer – Databricks
Eliassen Group
Richmond, VA
- $80 to $90 USD / hour
Our client is seeking a highly experienced Staff AI & Data Engineer to design and build enterprise-grade data and AI solutions on Databricks. This hands-on role focuses on strengthening the…
Added 3 mins ago
RH
Software Engineer
Robert Half
Orlando, FL
- $80 to $85 USD / hour
We are looking for a Software Engineer to join the client’s engineering team within Workforce Technology. This role will play a key role in designing, building, and supporting the…
Added 3 mins ago
Senior DevOps Engineer
PathAI
Boston, MA
PathAI is hiring its first dedicated Developer Operations Engineer to own the systems that let our engineers ship: release automation, CI/CD, build and deployment infrastructure, and…
Added 4 mins ago
RH
Cloud Engineer
Robert Half
Memphis, TN
- $70 to $85 USD / hour
…Experience with scripting and automation using PowerShell, Python, Bash, or similar languages. Strong understanding of cloud networking concepts, including DNS, VPNs, VNETs/VPCs, load…
Added 6 mins ago
A
Test Rngineer
Actalent
Merritt Island, FL
- $36 to $43 USD / hour
Job Title: Integration and Test EngineerJob DescriptionThe Integration and Test Engineer defines, documents, analyzes, performs, and interprets tests for products, systems, components, and…
Added 7 mins ago
A
Industrial Engineering Analyst
Actalent
Austin, TX
- $65 to $70 USD / hour
…Austin, TX Job DescriptionThe Industrial Engineering Analytics Engineer leads the development and application of advanced analytical models to improve manufacturing efficiency, capacity…
Added 7 mins ago
A
Materials And Process Engineer
Actalent
Austin, TX
- $60 to $68 USD / hour
Job Title: Materials and Process EngineerJob DescriptionAs a Materials and Process Engineer, you will own the full lifecycle of material flow and process equipment, from concept development…
Added 7 mins ago
Cloud DevOps Engineer - AWS & Python
U.S. Bank National Association
Irving, TX
U.S. Bank is seeking a Cloud DevOps Engineer, AWS & Python to join the ISS DevOps / Cloud Enablement Engineering Team. This specialized engineering team partners with application,…
Added 8 mins ago
Firmware Engineer Co-op
Beckman Coulter, Inc.
Indianapolis, IN
Assist with the design, development, and debugging of embedded firmware using C/C++ and Python for automated laboratory instrumentation.
Added 9 mins ago
Full Stack Software Engineer
System One
Cape Canaveral, FL
Added 9 mins ago
IG
Sr. Software Engineer
Insight Global
Stonewall, WV
- From $50 USD / hour
Insight Global is looking for a Senior Software Developer who will be working on the Digital team supporting customer-facing applications, with the majority of the role focused on frontend…
Added 11 mins ago
Java Developer
Novalink Solutions LLC
West Columbia, SC
As a Software Developer (Java) – Consultant at South Carolina Department of Health and Human Services (SCDHHS), you will be a key member of the Data Operations Hub Team. Your role involves…
Added 12 mins ago
RU
Network / System Engineer III
Randstad USA
Plano, TX
- $59.75 to $69.75 USD / hour
…tests,Jenkins,Kubernetes,Linux,Microsoft Azure,Azure,Azure Cloud,object-oriented,OpenShift,Puppet,python,software development,software solutions,Terraform,test-driven…
Added 12 mins ago
Consulting Data & AI Engineer
Carrier Access IT
Cedar Rapids, IA
The Consulting Data & AI Engineer is a key position on our Professional Services team that designs, develops, implements, and maintains data and artificial intelligence (AI) solutions for…
Added 12 mins ago
Consulting Data & AI Engineer
Carrier Access IT
Clive, IA
The Consulting Data & AI Engineer is a key position on our Professional Services team that designs, develops, implements, and maintains data and artificial intelligence (AI) solutions for…
Added 12 mins ago
Consulting Data & AI Engineer
Carrier Access IT
Omaha, NE
The Consulting Data & AI Engineer is a key position on our Professional Services team that designs, develops, implements, and maintains data and artificial intelligence (AI) solutions for…
Added 13 mins ago
Senior Flight Test Engineer - Advanced Effects (Steelfin)
Anduril Industries
Costa Mesa, CA
This position is looking for a highly motivated flight test engineer with emphasis in developmental test of new aircraft weapon and missile systems. You will work closely with the program…
Added 13 mins ago
Senior Flight Test Engineer - Advanced Effects (Barracuda)
Anduril Industries
Costa Mesa, CA
This position is looking for a highly motivated flight test engineer with emphasis in developmental test of new aircraft weapon and missile systems. You will work closely with the program…
Added 15 mins ago
Intelligent Automation Engineer - Onsite - Shiloh IL
Silverthorne Advisory Group LLC
Scott AFB, IL
Silverthorne Advisory Group is seeking a motivated and technically skilled Intelligent Automation Engineer to support an exciting and growing opportunity within the Defense sector at Scott…
Added 15 mins ago
Modem System Test Engineer - Wireless Technologies and Ecosystems |
Apple
CA
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…
Added 15 mins ago
AI Software Evaluation Engineer, Siri AI Quality
Apple
Cupertino, CA
Apple's Siri AI Quality team is looking for a passionate and skilled AI Software Evaluation Engineer to join our mission of delivering the highest-quality AI experiences to millions of…
Added 17 mins ago
Implementation Engineer
Keeper Security
Remote, United States
Keeper is hiring a driven, Implementation Engineer to join our B2B Support team. This is a 100% remote position from select locations, with an opportunity to work a hybrid schedule for…
Added 17 mins ago
Senior Software Engineer, Agentic Systems
NVIDIA USA
Remote, United States
Experience integrating evaluation capabilities across multiple products, runtimes, or internal platforms, especially through Python SDKs, plugins, or shared developer tooling
Added 18 mins ago
Cloud Engineer
EPC POWER CORP.
Remote, United States
EPC Power is looking for a Cloud Engineer to help design, build, and maintain the cloud infrastructure that powers our software products and data platforms. You will work closely with other…

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