Location: Libertyville, IL Salary: $119,300 – $164,100 per year A global leader in advanced manufacturing is seeking a Principal Process Engineer – Injection Molding to join their high-performing team in Libertyville, IL. This engineer will lead process development, support daily production, and drive improvements across thermoplastic injection molding operations. What You’ll Do: Develop and validate molding processes (IQ, OQ, PQ) for production Troubleshoot production issues and identify root causes Lead continuous improvement initiatives related to cost, quality, and efficiency Define process parameters and implement process controls Oversee the installation and validation of new equipment Train production teams and support technology transfers What We’re Looking For: 10–15 years of experience in injection molding, tooling, and process development Experience with scientific molding (RJG / E-Dart preferred) Familiarity with cleanroom environments (Class 7 or 8) Skilled in data/statistical analysis using Excel, Minitab, or similar tools Degree or equivalent experience in plastics or injection molding engineering What You’ll Receive: Competitive compensation and full benefits Matching 401(k), PTO, and tuition reimbursement Growth-focused, respectful, and inclusive work culture If you're ready to take ownership of impactful projects and elevate your career, apply now.