Apex Systems
Applications Dev & Test - Software Design Engineer 3
Apex Systems, Redmond, Washington, United States, 98052
## Job Description# Applications Dev & Test - Software Design Engineer 3* **Start Date:** 1/20/2026* **End Date:** 6/30/2026* **Duration:** ~5 months* **Chance for Extension:** Yes* **Location:** Onsite - Redmond, WA* **Openings:** 1* **Pay Range:** $54–$59/hr- **Operating Systems & Performance Analysis:** **2+ years** experience.- **Windows OS Development:** **1+ year** hands-on experience.* **Education:** Bachelor’s degree in Computer Science, Computer Engineering, or related field.* **Experience:** **5+ years** in systems software development.* **Core Competencies:**
+ Strong foundation in **data structures, algorithms, and software design**.
+ Large-scale systems software design and troubleshooting.
+ Debugging legacy code using **Windows Debugger**, instrumentation, WPP/ETW trace analysis.
+ Ability to modernize legacy APIs and implement new designs.
+ Sufficient proficiency in reading/writing code.* Deep OS-level engineering experience.* Proven ability to modernize legacy systems and APIs.* Strong debugging and performance analysis skills.*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.* #J-18808-Ljbffr
+ Strong foundation in **data structures, algorithms, and software design**.
+ Large-scale systems software design and troubleshooting.
+ Debugging legacy code using **Windows Debugger**, instrumentation, WPP/ETW trace analysis.
+ Ability to modernize legacy APIs and implement new designs.
+ Sufficient proficiency in reading/writing code.* Deep OS-level engineering experience.* Proven ability to modernize legacy systems and APIs.* Strong debugging and performance analysis skills.*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.* #J-18808-Ljbffr