Jobs in the United States

25+ jobs

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AB
Systems Engineer - HPC and GPU Infrastructure
Absolute Business Solutions Corp
Bethesda, MD
- $90,000 to $170,000 USD / year
…into timely, actionable intelligence. Team members work across software development, systems engineering, cybersecurity, platform operations, and mission integration to sustain current…
Added just now
AB
Senior Product Owner
Absolute Business Solutions Corp
Bethesda, MD
- $135,000 to $245,000 USD / year
ABSC has an exciting opening for a TS/SCI-cleared Senior Product Owner supporting mission software design, engineering, development, integration, and deployment for DIA-NDOC under the DTP…
Added just now
AB
Product Owner
Absolute Business Solutions Corp
Bethesda, MD
- $110,000 to $225,000 USD / year
…design, engineering, development, and deployment of mission software for DIA-NDOC under the DTP contract. You will lead an Agile application team and work with Government leads, the Lead…
Added 1 min ago
Test Engineer TS SCI
Northrop Grumman
Stafford, VA
Northrop Grumman, Defense Systems, is seeking an Associate Test Engineer to work on the Whisper program in Stafford, Virginia. The Whisper program is a large Antenna based RF Transmission…
Added 1 min ago
Model-Based Systems Engineer
Lockheed Martin
Manassas, VA
Cross-Functional Coordination: Collaborate with hardware/software/test engineers and naval stakeholders to align MBSE models with integration requirements, ensure onboard compatibility, and…
Added 1 min ago
Software Developer – Entry Level (Top Secret Clearance Required)
CGI Technologies and Solutions, Inc.
Fairfax, VA
As an Entry Level Software Developer, you’ll work with cross functional teams to design, build, test, and enhance technology solutions that address client needs. You’ll gain hands‑on…
Added 2 mins ago
Staff Principal Systems Engineer 5
Northrop Grumman
Charlottesville, VA
Northrop Grumman is seeking a Staff Principal Systems Engineer Level 5 to join our team of qualified, diverse individuals. The Marine Systems organization, part of Northrop Grumman Mission…
Added 2 mins ago
Senior Specialist, Technical Trainer/ Mission Operations Trainer
L3Harris
Chantilly, VA
Job Title: Senior Specialist, Integration & Test Engineer
Added 2 mins ago
Mission Operations Engineer (Entry-Level) - Millennium Space Systems
The Boeing Company
Chantilly, VA
As a Mission Operations Engineer, you will be the lead technical authority for Millennium’s on-orbit spacecraft. Your work will encompass the entire spacecraft mission life cycle, from the…
Added 2 mins ago
Senior Electrical Engineer, Data Center Engineering - Electrical Products and Services (DCE-EPS)
Amazon
Herndon, VA
You'll join a diverse team of software, hardware, and network engineers, supply chain specialists, security experts, operations managers, and other vital roles. You'll collaborate with…
Added 2 mins ago
Engineer IV
General Atomics
Herndon, VA
…avionics hardware development and implementation, and system integration, test, and verification for spacecraft and associated flight-payload and ground…
Added 2 mins ago
Jr. Software Test & Evaluation Engineer (Cleared) - 30980
Huntington Ingalls Industries
Virginia Beach, VA
HII’s System Integration group is seeking a Software Test Engineer to join our Integrated Training Systems Software Development team. This full-time, on-site position is located in Virginia…
Added 2 mins ago
Senior Human Factors Engineer (HFE)
The MITRE Corporation
McLean, VA
MITRE’s Human-Systems Integration (HSI) and User Experience (UX) department is seeking a Senior Human Factors Engineer (HFE) who is passionate about designing and developing user-centered…
Added 2 mins ago
Human Factors Engineer (HFE) Lead
The MITRE Corporation
McLean, VA
MITRE’s Human-Systems Integration (HSI) and User Experience (UX) department is seeking a Lead Human Factors Engineer (HFE) who is passionate about designing and developing user-centered…
Added 2 mins ago
Integration Engineer 4 (MAC)
Capital One
McLean, VA · Richmond, VA
Capital One is looking for a Lead Integration Engineer to join our growing Mac Engineering team. The platform has grown to support over 40,000 endpoints in recent years, as one of the…
Added 2 mins ago
Director, Full Stack Engineer
Capital One
McLean, VA · Richmond, VA
As a Director, Full-stack Engineer at Capital One, you will lead high-performing engineering teams working to define the future of banking in the cloud. You will partner closely with…
Added 2 mins ago
Lead Engineer
PwC
Richmond, VA
As a Lead Engineer you will guide the design, build, testing, and modernization of custom applications across cloud-native and on-premise environments, using modern engineering approaches,…
Added 2 mins ago
Java Full Stack Engineer with Spring boot/AWS Experience
Cognizant
Richmond, VA
As a Java Full Stack Engineer with Spring boot/AWS exp, you will make an impact by designing and delivering scalable, cloud-native healthcare payer applications that improve payment…
Added 2 mins ago
Senior Engineer
PwC
Richmond, VA
As a Senior Engineer you will help design, build, and test custom applications within our Advisory practice, bringing together software engineering, cloud-based solution delivery, and…
Added 2 mins ago
Senior Lead Engineer
PwC
Richmond, VA
As a Senior Lead Engineer you will lead custom application development and testing efforts that help clients turn business needs into scalable software solutions across cloud-native and…
Added 2 mins ago
Network Operations Engineer
Meta
Richmond, VA
Meta is seeking a Network Operations Engineer to join our Edge and Network Services (ENS) Foundation NetOps team. In this role, you will utilize your knowledge in hyperscale data center…
Added 4 mins ago
Senior Closures Systems Sealing Engineer
Ford Global
Long Beach, CA
The Senior Closures Systems Sealing Engineer will be a key member responsible for the design, development, and integration of closure mechanisms and primarily sealing for Advanced EV…
Added 6 mins ago
Senior DevOps Engineer
PathAI
Boston, MA
…backlog and OKRs, set technical direction for how we build, test, and release software, and partner closely with our product and integration engineering teams, embedding with them when a…
Added 7 mins ago
RH
Software Engineer
Robert Half
Memphis, TN
- $70 to $85 USD / hour
Software Engineer - .NET Developer Job Summary We are seeking a highly skilled Software Engineer (.NET Developer) to design, develop, test, and maintain scalable enterprise applications…
Added 7 mins ago
HB
Front End Software Engineer
HIGH BRIDGE CONSULTING LLC
Vienna, VA
- $100,000 to $140,000 USD / year
They are now looking to add to their team and are looking to hire a "Software Engineer / Technical Delivery Lead”. This role will be based out of Tysons, VA, and is Hybrid

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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