Applications Dev & Test - Software Design Engineer in Test 3

  • Redmond, WA
  • Posted 1 day ago | Updated 4 hours ago

Overview

On Site
Full Time

Skills

Software Design
Automated Testing
Microsoft Windows
Storage
Test Suites
Migration
Test Execution
Operating Systems
Problem Solving
Conflict Resolution
Testing
Usability
Bug Tracking
Database
Project Scoping
Computer Science
Computer Engineering
Software Testing
C#
Windows PowerShell
Scripting
Debugging
C
C++
Writing
Documentation
Test Plans
Test Cases
Data Storage
File Systems
WTT
Dashboard
SAP BASIS
Law
IT Service Management
Innovation
Collaboration
Recruiting
Insurance
Finance
Professional Development
Training
Leadership
CompTIA
Customer Service
Career Counseling
Apex
Oracle Application Express

Job Details

Job#: 3016482

Job Description:

Software Design Engineer in Test 3 (SDET III) - Windows Storage & File Systems
Overview

The Windows Storage & File Systems team is seeking a highly skilled Software Design Engineer in Test 3 to help advance the quality, reliability, and performance of core Windows storage components. This team builds and maintains the testing infrastructure that ensures billions of Windows devices can store, access, and protect data seamlessly. If you're passionate about low-level systems, love debugging complex issues, and want to influence foundational OS technologies, this role offers a rare opportunity to make an outsized impact.
Typical Day in the Role

A typical day involves deep technical engagement with Windows storage test systems and product code. You will:
  • Review automated test runs and triage failures.
  • Distinguish between product bugs and test bugs, opening incidents for both.
  • Debug and fix legacy tests to reduce noise and improve signal quality.
  • Collaborate closely with developers on high-impact product issues.
  • Modernize older test suites (e.g., WTT) and migrate them into current test platforms.
  • Address low-hanging bugs to improve overall product quality and test reliability.

Your work directly influences the accuracy of our quality dashboards and the stability of Windows storage features used worldwide.
Team Purpose

This team is responsible for ensuring the robustness of Windows Storage and File Systems. You will help maintain and evolve the testing infrastructure that validates storage components across the OS, ensuring they meet the highest standards of reliability and performance.
Key Projects
  • Debugging and repairing legacy test suites.
  • Reducing test noise to improve product quality signals.
  • Identifying and isolating product vs. test defects.
  • Migrating older test frameworks into modern, scalable platforms.
  • Enhancing automation and scripting to streamline test execution.
Why This Role Is Unique
  • Work on core operating system features that power billions of devices.
  • Build deep expertise in storage systems, file systems, and OS internals.
  • Influence high-impact components with global reach.
  • Join a team where technical depth, curiosity, and problem-solving are celebrated.
Responsibilities
  • Execute test plans, scenarios, scripts, and procedures.
  • Validate system modifications and prepare them for implementation.
  • Develop testing programs addressing areas such as database impacts, software scenarios, and usability.
  • Document defects using internal bug tracking systems and partner with developers to resolve them.
  • Analyze and document issues related to program behavior, output, or content.
  • Monitor bug resolution progress and track success metrics.
  • Maintain databases of known test defects.
  • Plan test schedules and strategies aligned with project scope and delivery timelines.
Required Qualifications
  • Associate's degree in Computer Science, Computer Engineering, or related technical field.
  • 5-6 years of professional experience in software testing or development.
  • Minimum 3 years of hands-on experience with C and C++ (disqualifier if missing).
  • Proficiency in C#, PowerShell, and scripting languages.
  • Strong debugging skills, especially in C/C++.
  • Experience writing test documentation (test plans, test cases, results reports).
  • Ability to analyze and interpret test results and recommend improvements.
Preferred Qualifications
  • Experience with storage systems, file systems, or OS internals.
  • Familiarity with legacy test frameworks (e.g., WTT) and modern test platforms.
  • Strong understanding of automation and test infrastructure.
Performance Measurement

Success in this role will be evaluated based on:
  • Improvements in product quality metrics.
  • Reduction of test noise in quality dashboards.
  • Effectiveness in identifying and resolving test and product bugs.
  • Contributions to modernizing and stabilizing test infrastructure.
Work Location
  • Hybrid Work Arrangement (HWA) Redmond, WA


EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.
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