As of January 01, 2026, the average annual salary for Principal Full Stack Engineer in Illinois is $84,615, equivalent to $41 per hour, $1,627 weekly, or $7,051 monthly. These figures, sourced from Salary.com’s real-time job posting scans, highlight competitive earning potential for Principal Full Stack Engineer in cities like Santa Clara, San Jose, and Fremont.
Annually Salaries for Principal Full Stack Engineer in Illinois vary widely, spanning from $67,728 to $100,596. Most professionals fall between the 25th percentile ($75,776) and 75th percentile ($92,980), while top earners (90th percentile) make $100,596 per year. This $17,204 pay gap underscores opportunities for salary growth through certifications, specialized skills like Analysis or Software Development, or targeting high-paying regions like District of Columbia or California.
Location and experience significantly influence earnings. For example, Illinois Principal Full Stack Engineer often earn 1.9% higher than national averages due to demand from Fortune 84 companies. However, Illinois currently ranks 14 nationwide for Principal Full Stack Engineer job salary. Professionals are advised to focus on high-growth sectors like to offset market challenges.
