1

Unisim Jobs (NOW HIRING)

... UniSim, or ProMax · Size and specify process equipment such as separators, compressors, pumps, exchangers, columns, treatment packages, etc. · Perform hydraulic calculations and system analysis ...

... UniSim, or ProMax · Size and specify process equipment such as separators, compressors, pumps, exchangers, columns, treatment packages, etc. · Perform hydraulic calculations and system analysis ...

Senior Process Engineer

Denver, CO · On-site

$107K - $138.40K/yr

Process models in Aspen HYSYS, Unisim Design, or other simulation software. * Line sizing, velocity and pressure drop calculations. * Equipment sizing calculations and specifications for bulk ...

... UniSim, or ProMax • Size and specify process equipment such as separators, compressors, pumps, exchangers, columns, treatment packages, etc. • Perform hydraulic calculations and system analysis ...

Process Simulation Modeling Experience with UniSim, Aspen, or Hysis About Linde: Linde is a leading global industrial gases and engineering company with 2025 sales of $34 billion. We live our mission ...

Experience working with Generative World Models (Cosmos, UniSim, sora-style architectures) * Experience with robotics simulation products (IssacSim, MuJoCo, Omniverse, USD) * Experience with applying ...

Senior Engineer, Production

Arlington, VA · Hybrid

$120.20K - $165.10K/yr

Familiarity with Microsoft Office 365 Application Suite, process modeling tools such as Unisim/Aspen HYSYS, AI models (e.g. neural networks) * Some basic programming skills is a plus (C++, Python etc.

Senior Engineer, Production

Arlington, VA · On-site

$120.20K - $165.10K/yr

Familiarity with Microsoft Office 365 Application Suite, process modeling tools such as Unisim/Aspen HYSYS, AI models (e.g. neural networks) * Some basic programming skills is a plus (C++, Python etc.

Senior Process Engineer

Geismar, LA · On-site

$110.60K - $143.10K/yr

Strong proficiency with Aspen HYSYS/Unisim, exchanger design software (EDR/HTR), and hydraulic modeling tools. * Working knowledge of industry standards and codes (RAGAGEP) and process equipment ...

next page

Showing results 1-20

Unisim information

See salary details

$10

$13

$17

How much do unisim jobs pay per hour?

As of May 29, 2026, the average hourly pay for unisim in the United States is $13.97, according to ZipRecruiter salary data. Most workers in this role earn between $12.50 and $15.38 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Unisim Engineer, and why are they important?

To thrive as a Unisim Engineer, you need a solid background in chemical or process engineering, strong analytical skills, and typically a relevant engineering degree. Proficiency in AspenTech's UniSim process simulation software and familiarity with related industry tools are essential. Attention to detail, problem-solving ability, and effective communication are key soft skills for collaborating with multidisciplinary teams and optimizing process designs. These skills ensure accurate simulations, efficient plant operations, and successful project outcomes in process industries.

What are some common challenges faced by professionals working with Unisim simulation software, and how can they be addressed?

Professionals using Unisim often encounter challenges related to modeling complex processes accurately and integrating simulation results into real-world operations. Navigating the software's advanced features can require a solid understanding of both process engineering and the tool itself, which may necessitate ongoing training. Collaboration with process engineers, IT teams, and operations staff is crucial to ensure simulations reflect actual plant conditions and to validate results. Regularly updating models and maintaining clear documentation can help address these challenges and improve overall project outcomes.

What are Unisim jobs?

Unisim jobs typically refer to positions that involve working with UniSim, a process simulation software used primarily in the chemical, oil & gas, and process industries. Professionals in these roles use UniSim to model, simulate, and optimize process operations, helping organizations improve efficiency, safety, and profitability. Common UniSim job titles include process engineer, simulation specialist, and process modeling engineer. These jobs require a solid background in chemical engineering, process optimization, and familiarity with simulation tools like UniSim. Employers value candidates with strong analytical skills, attention to detail, and experience in industrial process environments.

What is the difference between Unisim vs Process Engineer?

AspectUnisimProcess Engineer
CredentialsTypically requires chemical engineering background, certifications in simulation softwareRequires chemical engineering degree, professional engineering license often preferred
Work EnvironmentPrimarily software-based, working in offices or remoteIndustrial plants, refineries, or manufacturing facilities
Industry UsageUsed for process simulation, design, and optimizationDesign, develop, and optimize industrial processes

Unisim is a simulation software used by engineers to model and optimize chemical processes, while a Process Engineer applies engineering principles to develop and improve industrial processes. Both roles often require chemical engineering credentials, but Unisim focuses on software expertise, whereas Process Engineers work directly in industrial settings.

More about Unisim jobs
Infographic showing various Unisim job openings in the United States as of May 2026, with employment types broken down into 71% Full Time, 24% Part Time, and 5% Contract. Highlights an 96% Physical, 2% Hybrid, and 2% Remote job distribution, with an average salary of $29,053 per year, or $14 per hour.

$62.50 - $91.91/hr

Full-time

Medical, Dental, Retirement

Posted 7 days ago


Job description

<span style="font-size: 16.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;"><strong>Senior Process Engineer</strong></span></span><br><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Denver, CO (On-site)<br><br>Benefits: Standard Medical, Dental, 401(k)<br>Pay Range: $62.50 - $91.91 <br><br><br>Summary: As a Senior Process Engineer, you will provide process engineering services to Client and its customers, perform process engineering tasks with oversight from a Lead Process Engineer, and provide mentorship to others within the process engineering team. You will bring oil refining, pipeline, and gas processing, and/or chemical industry experience to specifically support Client’s client local to Denver, CO. <br><br><strong>Responsibilities:</strong></span></span><ul><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Deliver process engineering services that meet Client', its customers' and applicable statutory and regulatory specifications, on time and within budget.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Initiate, manage and if required supervise process engineering project requirements.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Perform process engineering services such as:</span></span><ul><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">participate in relevant meetings, prepare progress reports, and follow required checking procedures.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">ensure the project scope is clear and that changes comply with project change management processes.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">provide assistance and advice during procurement, construction, and commissioning activities.

</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">outline project requirements including actively promoting workshare, where appropriate, assign tasks and supervise progress; and</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">proactively resolve any discrepancies between Client and its Customer's requirements.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">communicate resource plan and needs for assigned projects to the Process Engineering Manager and seek resources with the assistance of the manager.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">communicate effectively with the process engineering team and project stakeholders, including the Customer.</span></span></ul><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Identify issues and problems, develop appropriate solutions, and ask for assistance when required.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Provide technical oversight, assign tasks to junior or mid-level engineers, and monitor progress for projects as needed.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Develop, check and be the technical owner and approver of process engineering deliverables including, but not limited to, the following:</span></span><ul><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Process Flow Diagrams (PFDs)</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Heat and Material Balances (HMBs)</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Piping & Instrumentation Diagrams (P&IDs)</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Process models in Aspen HYSYS, Unisim Design, or other simulation software.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Line sizing, velocity and pressure drop calculations.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Equipment sizing calculations and specifications for bulk separation vessels, heat exchangers, pumps, compressors, control valves and PSV’s.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Pressure Safety Valve (PSV) overpressure analysis and sizing, familiar with Iprism.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Relief system (flare) evaluation and analysis</span></span></ul></ul><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;"><strong> Qualifications:</strong></span></span><ul><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Bachelor’s or master’s degree from an ABET accredited university or college in Chemical Engineering or related field.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">10+ years of process engineering experience executing projects in the oil, natural gas, and/or chemical industries.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Demonstrated capability as a process engineering lead.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Substantial experience of working in multi-disciplinary projects and teams.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Highly effective technical and practical engineering skills and ability to consistently deliver quality, accurate, and timely work to Client and its customers.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Knowledge of the fundamental requirements of the process engineering, and the basic requirements of other engineering fields.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Knowledge of applicable local and international standards, statutory and regulatory requirements.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Competent use of process engineering specific software.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">AspenTech products (HYSYS, Flare System Analyzer, etc.)</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Honeywell Unisim products.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">BRE ProMax.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Hydraulic modeling software.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Other internal and external calculation tools and software.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Competent use of relevant software such as MS Office Suite.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">OGLA experience preferred.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Pipeline Hydraulic Analysis preferred.</span></span><li><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;">Flow Assurance experience is a plus.</span></span></ul><br><span style="font-size: 14.0px;"><span style="font-family: Calibri , Verdana , Geneva , sans-serif;"><em>We are an Equal Opportunity Employer and do not discriminate on the basis of race, color, religion, sex, national origin, age, disability, veteran status, genetic information, sexual orientation, gender identity, or any other legally protected status. All qualified applicants will receive consideration for employment without regard to any of these characteristics.</em></span></span><br><br><br>PandoLogic. Category:Manufacturing, Keywords:Process Engineer, Location:Denver, CO-80218


About STSI

Sourced by ZipRecruiter

Industry

Recruiting and staffing services

Company size

1,001 - 5,000 Employees

Headquarters location

Wheaton, IL, US

Year founded

1998