Software Test Development Engineer

Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world.

A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Software Test Development Engineer located in Austin, TX.

Reporting to the Test Engineering Manager, the Software Test Development Engineer will serve as a key technical lead and individual contributor for a new liquid-cooled server rack product line. You will drive launch and ongoing support of high-power AI/ML, GPU, and hardware accelerator-based server, storage, and networking platforms featuring advanced liquid cooling. This role owns test process development for full rack (L6,10/L11) assembly and integration—ensuring quality, performance, and safety—across NPI and sustaining production. You’ll design procedures, automate test execution, analyze data for continuous improvement, and leverage liquid cooling expertise to deliver robust end-customer solutions.

What a typical day looks like:

• The Software Test Development Engineer plays a vital role in ensuring the quality and reliability of hardware products, contributing to the overall success of the manufacturing process and customer satisfaction
• Responsible for contributing to the end-to-end architecture, definition, development and production deployment of production software applications and infrastructure spanning multiple customers.
• Test System Development: Design and develop test systems and procedures for manufacturing processes. This includes creating test plans, test cases, and test scripts to assess the functionality and performance of hardware components or devices such as motherboard, memory, CPU, storage (SSD, HDD, NVMe) and PCIE devices (NIC, GPU)
• Test Software Development: Create, validate, release, and maintain test software and scripts that automate the testing process. This software may include code for controlling test equipment, collecting and analyzing data, and generating test reports
• Test Sustaining: Support and maintenance for the manufacturing server (L10) and rack (L11) level test software and infrastructure deployed at our production facilities
• Collaboration: Work closely with cross-functional teams, including hardware engineers, manufacturing engineers, and quality assurance personnel, to ensure alignment on testing requirements and quality standards

Essential Duties & Responsibilities

• Test Development & Execution
• Liquid Cooling
• Failure Analysis & Debugging
• Automation & Data Analysis
• Continuous Improvement
• Technical Leadership & Training
• Cross-Functional Collaboration
• Reporting & Communication
• Safety & Compliance

The experience we’re looking to add to our team:

• Bachelor’s degree in CS, CE, EE/Electronics, or related field (MSEE or advanced degree preferred).
• 8-10 years’ experience in software manufacturing test development/sustaining with enterprise servers, storage or networking products is required
• Proficiency in scripting languages (Python, Bash), advanced Linux command-line operations, and hardware/network troubleshooting including the ability to train others on Linux fundamentals.
• Linux development expertise with a solid understanding of its fundamentals: Eg Ubuntu
• Expertise with hardware and API solutions for controlling, managing and stressing L10 devices (servers, network and storage SSDs, NVMe)
• Strong knowledge of professional software engineering practices for the complete software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations
• Ability to travel up to 10% globally as required
• Expertise in computer and server hardware/software integration, diagnostics, and repair -particularly within a manufacturing or high-level assembly environment

BO18

What you'll receive for the great work you provide:

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Application Deadline:

Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume.

Job Posting Start Date 09-01-2026 Job Posting End Date 10-26-2026 Job CategoryProduction Engineering

Is Sponsorship Available?

No

Flex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).