Chemical Engineer Jobs in Illinois

Thornton Tomasetti applies engineering and scientific principles to solve the world’s challenges. An independent organization of creative thinkers and innovative doers collaborating from offices worldwide, our mission is to bring our clients' ideas to life and, in the process, lay the groundwork for a better, more resilient future. We provide support and opportunities to our employees to achieve their full potential and cultivate a rewarding career.

Our Forensic practice investigates problems in the built environment and provides evidence-based solutions founded on rigorous science and physics. We assist attorneys, property managers, building owners, contractors, manufacturers, and design professionals with a wide range of engineering and architectural issues.

Your Role
As a Chemical Project Engineer in our Forensics Practice, you’ll take on a key technical and coordination role, owning complex design challenges, guiding junior engineers, and shaping the delivery of innovative forensic solutions. You’ll work across disciplines, contribute to project management, and begin stepping into more client-facing opportunities. If you’re ready to elevate your impact and grow into future project leadership, this is the place to do it.

What You’ll Do

• Lead and refine evaluations of chemical engineering systems, solving project challenges with strong engineering judgment.
• Drive the quality of deliverables by organizing information clearly and reviewing junior staff’s work.
• Coordinate with architects, engineers, legal teams, insurance professionals, contractors, and other stakeholders while taking on increased responsibility for technical decisions.
• Support junior team members through effective delegation and feedback.
• Grow your project leadership skills by assisting with project management activities and engaging in client-facing opportunities.

What You’ll Bring

• Bachelor’s degree in Chemical Engineering; Master’s or PhD preferred.
• Professional Engineer (PE) licensure preferred.
• 4+ years of chemical engineering experience with proficiency in analysis and documentation tools.
• Solve complex problems with confidence, balancing priorities, and adapting designs effectively.
• Lead coordination across disciplines, communicate clearly, and mentor junior staff while growing your professional presence

Compensation

The rate for this position generally is $103,000 - $134,000 annually. This range is a good faith estimate provided pursuant to the Illinois State Pay Transparency Law. It is based on what a successful Illinois State applicant might be paid and assumes that the successful candidate will be in Illinois State or perform the position from Illinois State. Similar positions located outside of Illinois State will not necessarily receive the same compensation. Actual pay rates may vary from the range, as permitted by Illinois Equal Pay Transparency Law. Compensation offers will be based on various factors, including operational needs, individual education, qualifications and experience, work location and comparison to employee already in the role, as well as other considerations permitted by law. A potential new employee’s pay history will not be used in compensation decisions.

Benefits

Depending on your employment status, benefits may include:

• Medical, Dental, Vision, Life, AD&D, Disability and other voluntary benefits

• Flexible Spending Accounts for Medical and Childcare

• Paid Time Off, Family Leave for New Parents, Volunteer Time

• Tuition Reimbursement

• Commuter Transit (where available)

• 401k retirement savings with Company matching on employee contributions and/or qualified student loan repayments

• Fitness Reimbursement

• And other various wellness, diversity/inclusion and employee resource programs and initiatives

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Thornton Tomasetti is proud to be an equal employment workplace. Individuals seeking employment at Thornton Tomasetti are considered without regards to age, ancestry, color, gender (including pregnancy, childbirth, or related medical conditions), gender identity or expression, genetic information, marital status, medical condition, mental or physical disability, national origin, protected family care or medical leave status, race, religion (including beliefs and practices or the absence thereof), sexual orientation, military or veteran status, or any other characteristic protected by federal, state, or local laws.

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