Job Title: Simulation Associate
Location: St. Louis, MO; Remote
Company: Onyx 360
Job Type: Internship or Co-op
Travel: Minimal
About the Role
At Onyx 360, we are reimagining how industry designs, tests, and runs the systems that power the world — through simulation that connects imagination with reality. Our work bridges the digital and physical, turning engineering theory into real-world performance and solving critical challenges within the process industries.
We’re seeking a motivated intern interested in learning dynamic simulation, industrial processes, and automation from experienced mentors. In this role, you’ll support the development of simulation models, assist with controls integration, contribute to testing activities, and grow into a key contributor on multi‑disciplinary engineering projects.
You’ll gain hands‑on experience with industrial systems, tools, and workflows and build a solid foundation for a career in process simulation, controls, or digital‑twin technologies.
Key Responsibilities
- Assist in building and testing dynamic process simulations under guidance from senior engineers.
- Review project inputs such as PFDs, P&IDs, HMBs, and equipment data sheets.
- Support integration of simulation software with control systems.
- Help prepare materials for customer demos, acceptance tests, and internal reviews.
- Participate in team discussions, design reviews, and troubleshooting sessions.
- Contribute to improving tools, workflows, and documentation as you learn.
- Explore new technologies, simulation techniques, and automation methods.
Who You Are
- You’re curious, eager to learn, and excited to work across disciplines.
- You are motivated by impact: designing solutions that make operations safer, smarter, and more connected.
- You balance precision and creativity — diving deep into the details while staying curious about the bigger picture.
- You make learning a priority – you aren’t afraid to ask questions, make and learn from mistakes, and grow quickly from hands‑on experience.
- You thrive in a fast-paced, collaborative environment where ideas form quickly from concept to reality.
Requirements
- Working toward or completed a bachelor’s degree in Chemical Engineering (or similar).
- Coursework or interest in process modeling, controls, or industrial systems.
- Strong analytical and problem solving skills.
- Clear communication and willingness to collaborate in a team environment.
Preferred Skills
- Exposure to dynamic process simulation software.
- Familiarity with industrial processes typically found in Oil & Gas, Refining, Petrochemical, Life Sciences, Mining, etc.
- Interest in control systems(Emerson, Rockwell, Honeywell, etc.).
- Experience with project‑based engineering, labs, or internships.
- Basic understanding of virtualization, networking, or industrial automation.
- Eagerness to learn new tools, methods, and technologies.
Why Onyx 360?
Onyx 360 is a Connected Performance company focused on helping every part of the industrial enterprise work together. We take a flexible, vendor-agnostic approach—mixing solid engineering fundamentals, hands-on experience, advanced analytics, and automation—to give teams a clear, 360° view of what’s happening, from the plant floor all the way up to the front office.
If you’re passionate about solving real-world problems with innovative, scalable solutions, you’ll thrive here.
Why Engineers Choose Onyx 360:
- Technically Challenging Work – Tackle complex systems with cutting-edge tools and methodologies.
- Competitive Compensation & Benefits – Your expertise is valued – and rewarded.
- Startup Agility, Industrial Impact – Move fast, iterate often, and see your ideas shape real-world operations.
- Performance-Based Awards – Earn results-driven incentives tied to your measurable impact.
- Empowered People, Balanced Lives – We build an environment of trust, flexibility, and support – so you can do your best work and still live your best life.
Our Culture
- Fearless Innovation –We experiment boldly, challenge assumptions, and learn fast. Curiosity and technical rigor drive our edge.
- Ownership & Accountability – Engineers own their code, their models, and their outcomes. We step up, speak out early, and take pride in delivering real impact.
- Radical Transparency & Respect –We share data, decisions, and feedback openly. Every voice matters, and every idea is heard.
- Strength in Support –Collaboration is our superpower. We build each other up, troubleshoot together, and celebrate wins as a team.
Additional Information
Applicants will be required to pass a background check and drug screen.
Work Authorization
Onyx 360 will only employ those who are legally authorized to work in the United States. This is not a position for which sponsorship will be provided. Individuals with temporary visas such as E, F-1, H-1, H-2, L, B, J, or TN or who need sponsorship for work authorization now or in the future, are not eligible for hire.
Equal Opportunity Employer
Onyx 360 is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to sex, race, color, religion, national origin, age, marital status, political affiliation, sexual orientation, gender identity, genetic information, disability or protected veteran status. We are committed to providing a workplace free of any discrimination or harassment.
Ready to shape the future of simulation engineering? Apply today!