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Petrographer - Materials Engineer/Scientist

Location
King of Prussia, PA, United States

Posted on
Feb 18, 2026

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Job Information
Pennoni Associates Inc
Petrographer - Materials Engineer/Scientist
in
King of Prussia
Pennsylvania
Founded more than 50 years ago, Pennoni is a multidisciplinary
consulting engineering firm that specializes in Quality Assurance
Fabrication Inspection. Our Construction Materials Engineering and
Testing group, together with the other disciplines, form a team of
experts who provide inspection, materials consulting, and testing
services for buildings, bridges, highways, and other infrastructure
facilities. Our Nationally recognized Structural Materials Inspection
team includes renowned experts in welding and fabrication who provide
quality assurance inspection services around the globe.



Pennoni is an ENR Top 500 consulting engineering firm. As a 100%
employee-owned firm, we continually strive to build a great workplace
where our employees trust the people they work for, enjoy the people
they work with, and take pride in what they do. Come join the minds that
propel Pennoni!


Job
Responsibilities:


Pennoni Associates is current seeking a Petrographer -- Materials
Engineer/Scientist
with experience consistent with, but not limited
to:

Prepare concrete samples for microscopic analysis using thin
sections.

Assemble, calibrate and maintain various types of equipment and
instruments used to perform laboratory examinations on aggregate and
concrete materials through petrographic examination.

Maintain organized records of data and tests performed, including
general observations and/or unusual conditions encountered.

Write comprehensive reports conveying the results of the testing and
significance of the findings.

Collaborate with in-house engineering to develop repair/remediation
procedures based on analysis of samples and findings.

Consult with clients.

Conduct materials investigations and forensic analysis.

Required Attributes:
College level courses in Petrography, Mineralogy, and Optical
Mineralogy or 5 years of documented equivalent experience
Experience in the application to evaluations of concrete-making
materials and concrete products in which they are used in
cementitious-based materials.
Proficient in written and verbal English communication.
Ability to work within tight timeframes and meet strict deadlines.
Knowledge of petrographic / mineralogy laboratory testing procedures
and guidelines, including well defined analytical approaches and
methods, as well as the interpretation of results.
Ability to read and follow testing procedures described in various
agency documents (i.e. ASTM, AASHTO, ACI, and state DOT
specifications).
Able to work well independently and as part of a team.
Preferred Attributes:
Able to operate necessary equipment to prepare test samples. Ability
to present data, analysis and results.
Ability to present data, analysis and results.
Why Work With Us?
At our core, we recognize that the unique qualities of our Pennoni
individuals are essential for innovation and growth as a whole. Pennoni,
an ENR Top 500 consulting engineering firm, offers many opportunities
to help you build your career
. We continually strive to build a great
workplace where our employees trust the people they work for, enjoy the
people they work with, and take pride in what they do.


Equal Opportunity Employer/Veterans/Disabled

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