Sr Engineer Process
Zachry
Houston, TX · Posted September 6, 2026
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Where Houston, TX placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #1Best cities for manufacturing and industrial jobs887 openings · of 100
- #1Best cities for energy and utilities jobs704 openings · of 27
- #1Cities hosting the most energy & utilities conferences11 conferences · of 15
- #2Cities with the most jobs that do not need a four-year degree in the Southwest481 jobs · of 38
- #2Best cities for software and engineering jobs in the Southwest1,018 openings · of 33
- #2Best all-round cities for mid-career professionals in the Southwest74 / 100 · of 15
Rankings about engineering jobs
- Best cities for software and engineering jobs #1 San Francisco (3,412 openings)
- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
- Most requested AI skills in engineering jobs #1 AI tools in daily work (6.1%)
- AI tools named most often in engineering jobs #1 Claude (1.7%)
- Employers with the most engineering jobs #1 Amazon (2,992 roles)
How AI is used in this kind of work
AI use among industrial engineers is little observed so far. Measured exposure for industrial engineers: 4% (little observed).
Share of this job’s tasks that AI is already used for at work, from real usage. It is not a forecast of job loss, and a low number means no use seen yet. Source: Anthropic Economic Index.
About the job
Zachry Engineering Corp (ZEC) is currently searching for a Senior Process Engineer to support our Houston Westchase Design Center. The Senior Process Engineer will be responsible in the design office for routine engineering and design tasks of the assigned projects based on specific and detailed instructions received from the assigned supervisor as to the required tasks and results expected.
Responsible for developing process flow diagrams (PFD), piping and instrumentation diagrams (P&ID), and Process/Mechanical Equipment Datasheets
Responsible for developing Heat and Mass Balance
Responsible for sizing and rating various equipment like pumps, horizontal and vertical vessels, heat exchangers, and air coolers.
Responsible for performing hydraulic analysis and calculations for piping systems. Experience to include evaluating systems involving single phase, two phase, slurries, water hammer, slug flow, and distribution networks. Tools required should range from spreadsheet through rigorous software evaluations.
Translate project design basis requirements, client specifications, and contract documents into definable process tasks
Support Zachry quality program, ensuring proper quality checks and verifying proper documentation of input data.
Responsible for engineering and design of the Process engineering scope of assigned projects. Independently evaluates, selects, and applies standard engineering techniques, procedures, and criteria.
Support projects as an individual contributor. As needed, supervise, coordinate, and review work of a small team of engineers to accomplish project or department objectives.
Participate in various client Process Hazard Analysis reviews (i.e. risk review, HAZID, HAZOP/LOPA).
Responsible for design of relief system including contingency analysis, relief valve sizing, flare header design, and flare header analysis.
Present technical information to peers and/or clients for review and comment.
Analyze problems and take appropriate action to ensure continuous and reliable operation of equipment and systems.
Evaluate equipment and process to ensure compliance with safety and environmental regulations.
Coordinate with offshore High Value Engineering Center for engineering execution.
Other duties as assigned
Must maintain active status in a drug and/or alcohol testing consortium.
Bachelor’s Degree in Chemical or Mechanical Engineering 15+ years of experience working as a Process / Mechanical Engineer in industries such as Oil Refining, Gas Processing, Power, or Chemical industries; 7+ years working in Power, refining/gas processing, Petrochemical or similar PSM regulated industries; 5+ years working in an Engineering firm as a Process / Mechanical engineer
Comprehensive understanding of processes typically seen in Power / Process plants
Some travel ( P&ID and Equipment Datasheet development
Proficient in H&MB development, equipment and instrumentation process specification and performing hydraulic analysis. Strong background in the development of HMB for Combined Cycle Projects preferred.
Knowledge of Performance Guarantees including emissions compliance
Experience in the specification of fixed and rotating equipment including STG, CTG, and HRSG
Strong knowledge of ASME and API 520/521 with proficiency designing relief devices and associated collection headers
Excellent Communication Skills (Active Listening, Verbal, and Written)
Excellent Attention to Detail – in own work as well as demonstrated in checking work of others
Proven history of meeting schedule commitments and planning resources required
Proficient with Process modeling software (AspenTech suite preferred)
Demonstrated desire to learn new technologies and apply learnings to current projects
Preferred Qualifications
Licensed Professional Engineer
Experience utilizing the Thermoflow suite of Software Tools to develop HMB and TIC estimates
Experience utilizing Aspen Hysys suite of products, AFT, Fathom, Arrow, Impulse, as well as Korf, HTRI, Flarenet, and iPRSM
Knowledge and/or experience in EPC Power business
Experience with designing OSBL/Utility scopes required to support Licensor packages as well as converting PDP
Past exposure to environmental permitting and citing studies
Active member of professional organizations/committees.
ZACHRY GROUP is dedicated to providing a Safe and Drug Free work environment; and is an Equal Opportunity Employer.
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