Chemical Engineer / Process Simulation Specialist

Ambitus AI is an applied-AI product and research company focused on automating high ROI tasks for frontier labs and top enterprises. The Chemical Engineer / Process Simulation Specialist will design, execute, and evaluate process simulation workflows to translate chemical engineering reasoning into structured tasks for AI systems.

Responsibilities:

• Execute tasks within DWSIM to validate feasibility and establish ground-truth solutions
• Write detailed task specifications for process simulation workflows, including clear prompts, expected outputs, and grading criteria
• Build process flowsheets covering distillation, reaction, heat exchange, and separation systems with appropriate thermodynamic models and convergence strategies
• Define grading rubrics that assess both technical execution (e.g., correct unit operation setup, converged recycle loops, consistent stream tables) and engineering judgment (e.g., thermodynamic package selection, feed stage placement, reasonable energy duties)
• Provide clear, written documentation of your workflows, reasoning, and quality assessments

Requirements:

• Degree in chemical engineering or a closely related discipline
• Proficiency and fluency with DWSIM, Aspen Plus, Aspen HYSYS, CHEMCAD, UniSim, or similar process simulators
• Experience as process engineers, chemical engineering consultants, or simulation specialists
• Experience at refineries, petrochemical plants, specialty chemical manufacturers, EPC firms, or pharmaceutical/biotech process development
• Independent consultants with a portfolio of separation, reaction, or heat integration design projects
• Hands-on experience with thermodynamic property packages, distillation column design, reactor modeling, recycle convergence, and process optimization