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Hysys Jobs (NOW HIRING)

Worley

Process Engineer Level II

Monrovia, CA · On-site

$110K - $162K/yr

Advanced knowledge of process simulation packages such as HYSYS and/or PRO/II, iPRSM, PSPPM, Flare Network Analyzer and Computational Fluid Dynamics. * 5+ years of relevant process engineering ...

Eichleay, Inc

Process Engineer

Ferndale, WA · On-site

$75K/yr

Support process simulation efforts using tools such as HYSYS. * Help develop process deliverables including PFDs, P&IDs, line lists, and equipment lists. * Participate in process safety activities ...

Polaris

Senior Process Engineer

Lake Charles, LA

$95K - $123K/yr

Extensive Process Simulation experience (HYSYS, UNISYS preferred) * P. E. license preferred * Available for short-term travel IV. REPORTING REQUIREMENTS: Reports to the Process Department Engineer ...

Triveni IT

LNG Process Engineer

Belle Chasse, LA · On-site

HYSYS, Aspen Plus, etc. * 5+ years' experience working in an engineering capacity in an industrial setting in engineering or operations * Oil and Gas experience is required, with preference in LNG ...

New

System One

Process Design Engineer - Vapor

Tulsa, OK · On-site

Experience with process simulation software such as Aspen HYSYS or Symmetry * Experience in the design and operation of refining/petrochemical processing equipment with field process engineering ...

Polaris Engineering

Senior Process Engineer

Lake Charles, LA · On-site

$95K - $123K/yr

Extensive Process Simulation experience (HYSYS, UNISYS preferred) * P. E. license preferred * Available for short-term travel IV. REPORTING REQUIREMENTS: Reports to the Process Department Engineer ...

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How much do hysys jobs pay per hour?

As of Jul 11, 2026, the average hourly pay for hysys in the United States is $25.47, according to ZipRecruiter salary data. Most workers in this role earn between $17.55 and $29.57 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive in the Hysys position, and why are they important?

To thrive in a HYSYS role, you need a solid background in chemical engineering principles and process modeling, typically supported by a degree in chemical engineering or a related field. Proficiency with Aspen HYSYS process simulation software is essential, and additional certifications in process simulation may be advantageous. Strong analytical thinking, attention to detail, and effective communication skills set top performers apart. These skills and qualifications are crucial for accurately modeling chemical processes, troubleshooting design issues, and collaborating with multidisciplinary teams to ensure optimal plant performance.

What are the typical daily responsibilities for someone working in a HYSYS-focused role?

Professionals in a HYSYS-focused position generally spend their days developing and optimizing process simulations using Aspen HYSYS software, analyzing plant data, and working closely with process engineers to troubleshoot operational challenges. They may also participate in project meetings, prepare technical reports, and present simulation results to both engineering and management teams. Collaboration is frequent, as HYSYS specialists often consult cross-functional groups, including operations, safety, and instrumentation teams, to ensure simulation outputs align with real-world requirements. Continuous learning is important, as new software updates and evolving industry standards require ongoing professional development.

What is a Hysys job?

A Hysys job typically involves using Aspen Hysys, a process simulation software, to model and optimize chemical processes in industries such as oil and gas, refining, and petrochemicals. Professionals in this role analyze process performance, design equipment, and troubleshoot operational issues. They may work as process engineers, simulation specialists, or consultants to improve efficiency and safety in industrial operations. Strong knowledge of thermodynamics, process design, and simulation techniques is essential for success in this field.

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Hysys jobs near you
Infographic showing various Hysys job openings in the United States as of July 2026, with employment types broken down into 95% Full Time, 1% Temporary, and 4% Contract. Highlights an 90% Physical, 4% Hybrid, and 6% Remote job distribution, with an average salary of $52,986 per year, or $25.5 per hour.
Process Engineer Level II

Process Engineer Level II

Worley

Monrovia, CA • On-site

$110K - $162K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 22 days ago

Worley rating

8.1

Company rating: 8.1 out of 10

Based on 29 frontline employees who took The Breakroom Quiz

126th of 367 rated engineering

Job description

About us
Worley is a global company of energy, chemicals and resources experts headquartered in Australia. We partner with our customers to deliver projects and create value across the life of their assets. We specialize in consulting, engineering, procurement and construction across the project lifecycle, with services extending through to operations and decommissioning. Leveraging extensive experience and AI-enabled delivery, we support customers in navigating complexity as they meet today's needs and transition to more sustainable solutions.
Purpose:
You will provide process engineering services and leadership projects to Worley' and its customers, including technical support and supervision within the process engineering team.
Responsibilities:
  • Executes defined scope independently with limited supervision.
  • Demonstrates solid capability in relief and process safety fundamentals.
  • Perform overpressure protection evaluations across process units, including identification of credible scenarios and relief loads.
  • Execute PSV sizing, relief hydraulics, and flare/vent system analysis using approved methodologies and tools.
  • Support flare network and backpressure assessments, including blowdown and relief header evaluations.
  • Develop relief mitigation strategies to address system deficiencies and improve operability and safety.
  • Produces high-quality, auditable engineering deliverables.
  • Effectively collaborates across disciplines and supports client interactions.
  • Keep up to date with the latest developments and technical innovations in process engineering.
  • If required, assist, and support junior personnel within the process engineering team.
  • Communicate effectively with the process engineering team and project stakeholders, including the Customer.
  • Identify issues and problems, develop appropriate solutions, and ask for assistance when required.

What you will bring
Technical/Industry Experience and Qualifications Requirements:
  • Expertise in Relief & Flare System Design, Overpressure Risk Analysis & Mitigation, and Process Hazard Analysis.
  • Highly effective technical and practical engineering skills and ability to consistently deliver quality, accurate and timely work to Worley and its customers.
  • Excellent knowledge of the fundamental requirements of the process engineering, and the basic requirements of other engineering fields.
  • Excellent knowledge of applicable local and international standards and statutory and regulatory requirements.
  • Competent use of process engineering specific software.
  • Competent use of relevant software such as MS Office Suite.
  • Substantial technical land practical experience in process engineering in the same or similar industry including experience in working in multi-disciplinary projects and teams.
  • Strong and positive people leadership.
  • Advanced knowledge of process simulation packages such as HYSYS and/or PRO/II, iPRSM, PSPPM, Flare Network Analyzer and Computational Fluid Dynamics.
  • 5+ years of relevant process engineering experience, with demonstrated exposure to pressure relief and process safety systems.
  • Working knowledge of relief system design standards and codes (e.g., API 520/521/2000, ASME).
  • Experience performing PSV sizing, relief load calculations, and basic flare system evaluations.
  • Familiarity with process simulation and relief analysis tools (e.g., HYSYS, PRO/II, Aspen Plus, or equivalent; relief tools such as IPRSM, Aspen PIMS/PSPPM/Flare or similar).
  • Experience supporting HAZOPs, risk assessments, or process safety reviews.
  • Ability to develop and review core process deliverables (PFDs, P&IDs, line lists, calculations, datasheets).
  • Strong understanding of process fundamentals (thermodynamics, hydraulics, heat transfer) applied to safe plant design.
  • Effective communication skills with the ability to coordinate across disciplines and interface with clients.

Additional Information:
  • This position is in California.
  • Salary Range $110,507-$162,510.
  • Benefits: eligible for PTO, 401k, medical, vision, dental, etc.

Los Angeles
We will consider for employment all qualified Applicants, including those with Criminal Histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance."
Education - Qualifications, Accreditation, Training:
Required:
  • Bachelor's degree or master's degree (preferred) in chemical engineer or related field and or equivalent degree.

Preferred:
  • Experience in refining, petrochemical, or upstream facilities with complex relief systems.
  • Exposure to flare network modeling and backpressure analysis.
  • Familiarity with corporate or operator PRD programs and compliance frameworks.
  • EIT certification or progress toward Professional Engineer (PE) license.
  • Experience with brownfield modifications, MOC processes, or debottlenecking studies.

Opportunities to all qualified applicants and employees without regard to age, race, creed, color, religion, sex, national origin, ancestry, disability status, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status or any other basis as protected by federal, state, or local law.
Our policy is to conduct background checks for all candidates who accept an offer of employment with us.
Moving forward together
We want our people to be energized and empowered to drive sustainable impact. So, our focus is on a values-inspired culture that unlocks brilliance through belonging, connection and innovation. We're building a diverse, inclusive and respectful workplace. Creating a space where everyone feels they belong, can be themselves, and are heard.
And we're not just talking about it; we're doing it. We're reskilling our people, leveraging transferable skills, and supporting the transition of our workforce to become experts in today's low carbon energy infrastructure and technology. Whatever your ambition, there's a path for you here.
And there's no barrier to your potential career success. Join us to broaden your horizons, explore diverse opportunities, and be part of delivering sustainable change.

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