System Test Engineer

Connectivity System Test Engineer (Embedded Linux)
📍 Location: Brea, CA (Onsite)
💼 Employment Type: Full-time / Contract (select as applicable)
About the Role
We are seeking a Connectivity System Test Engineer with strong hands-on experience in embedded systems running on Linux platforms. The role focuses on system-level connectivity testing, including wireless and PED device connectivity, Linux-based operations, and structured manual/system testing. This position is ideal for someone who enjoys working close to hardware and software, executing tests from requirements, and ensuring high-quality system validation.
Key Responsibilities
Perform system testing on embedded Linux platforms for connectivity features
Work hands-on with Linux command-line operations for system navigation and validation
Manage Linux file systems, directories, binaries, libraries, and capture logs for analysis
SSH into multiple systems and execute shell commands effectively
Use Linux command-line utilities such as text processing tools, system monitoring tools, and curl
Apply understanding of Linux networking concepts and operations
Work with hardware discretes, understanding their usage, meaning, and notification triggers for functionality
Understand and validate wireless connectivity terminology and PED device connectivity
Support testing with basic hardware wiring knowledge, such as Ethernet connections
Install and manage software and Linux packages from the command line
Write test procedures from requirements, execute test cases, and document results clearly
Use ALM / test management tools for test execution and reporting
Perform manual and UI testing as part of system validation activities
Required Skills & Qualifications
Hands-on experience with Embedded Systems on Linux platforms
Strong proficiency with Linux command line and shell operations
Experience navigating and managing Linux filesystem structures
Ability to work across multiple systems using SSH
Understanding of Linux networking basics and connectivity concepts
Experience with system testing, including test procedure writing, execution, and documentation
Familiarity with ALM tools and structured test management processes
Experience with manual testing / UI testing
Nice to Have
Basic understanding of ARINC 429 labels and protocol terminology


Pay and Benefits
Pay Range Minimum: $ 70000 per year
Pay Range Maximum: $ 107000 per year

HCLTech is an equal opportunity employer, committed to providing equal employment opportunities to all applicants and employees regardless of race, religion, sex, color, age, national origin, pregnancy, sexual orientation, physical disability or genetic information, military or veteran status, or any other protected classification, in accordance with federal, state, and/or local law. Should any applicant have concerns about discrimination in the hiring process, they should provide a detailed report of those concerns to secure@hcltech.com for investigation.
A candidate’s pay within the range will depend on their skills, experience, education, and other factors permitted by law. This role may also be eligible for performance-based bonuses subject to company policies. In addition, this role is eligible for the following benefits subject to company policies: medical, dental, vision, pharmacy, life, accidental death & dismemberment, and disability insurance; employee assistance program; 401(k) retirement plan; 10 days of paid time off per year (some positions are eligible for need-based leave with no designated number of leave days per year); and 10 paid holidays per year
How You’ll Grow

At HCLTech, we offer continuous opportunities for you to find your spark and grow with us. We want you to be happy and satisfied with your role and to really learn what type of work sparks your brilliance the best. Throughout your time with us, we offer transparent communication with senior-level employees, learning and career development programs at every level, and opportunities to experiment in different roles or even pivot industries. We believe that you should be in control of your career with unlimited opportunities to find the role that fits you best.
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