As of April 01, 2026, the average annual salary for Software Development Engineer Test (SDET) in Illinois is $50,603, equivalent to $24 per hour, $973 weekly, or $4,217 monthly. These figures, sourced from Salary.com’s real-time job posting scans, highlight competitive earning potential for Software Development Engineer Test (SDET) in cities like Santa Clara, San Jose, and Fremont.
Annually Salaries for Software Development Engineer Test (SDET) in Illinois vary widely, spanning from $38,733 to $64,877. Most professionals fall between the 25th percentile ($44,390) and 75th percentile ($58,075), while top earners (90th percentile) make $64,877 per year. This $13,685 pay gap underscores opportunities for salary growth through certifications, specialized skills like Analysis or Software Testing, or targeting high-paying regions like District of Columbia or California.
Location and experience significantly influence earnings. For example, Illinois Software Development Engineer Test (SDET) often earn 1.9% higher than national averages due to demand from Fortune 83 companies. However, Illinois currently ranks 14 nationwide for Software Development Engineer Test (SDET) job salary. Professionals are advised to focus on high-growth sectors like to offset market challenges.
