Materials/Civil Engineer

Sileto Technologies Llc•Hialeah, FL

10d•$80,000 - $85,000

About The Position

Sileto Technologies LLC is seeking a hands-on Materials/Civil Engineer to join its R&D team and support the development and testing of polymer concrete and advanced construction materials. The engineer will turn research objectives into well-controlled experiments, deliver reliable test results, and help improve material formulations and processing methods. The role includes preparing and testing specimens, characterizing materials, analyzing results, maintaining laboratory documentation and safe practices, and supporting material screening, scale-up, and product qualification. The engineer will also travel to customer, supplier, partner, and project sites as needed for field evaluations, technical meetings, product trials, and material qualification activities. Occasional overnight business travel may be required. Within the first 90 days, the engineer is expected to prepare consistent, traceable specimens; perform routine tests safely; maintain reliable datasets; and independently summarize experimental results, variability, and next steps.

Requirements

Bachelor’s degree in Civil Engineering, Materials Science/Engineering, Chemical Engineering, Polymer Engineering, or a closely related discipline.
Approximately 1–2 years of relevant hands-on materials testing, laboratory R&D, or product development experience; equivalent experience considered.
Experience preparing specimens, operating testing equipment, and troubleshooting inconsistent experimental results.
Proficiency in Excel, technical documentation, experimental recordkeeping, PowerPoint presentations, and laboratory safety.
Ability and willingness to travel for company business, including occasional overnight trips, as project needs require.
Bilingual proficiency in English and Spanish, with the ability to communicate technical information clearly in both languages, verbally and in writing.
US Citizens or Green Card Holders only.

Nice To Haves

Experience with concrete, polymer concrete, thermoset resins (including UPR), composites, coatings, or adhesives.
Familiarity with ASTM testing, mechanical test frames, and analytical characterization equipment.
Understanding of design of experiments (DOE), replicate testing, and basic statistical analysis.

Responsibilities

Prepare, mix, cast, consolidate, and cure polymer concrete specimens using consistent methods and full batch traceability.
Execute experimental plans and document formulations, raw materials, processing conditions, and test parameters.
Perform or coordinate compression, flexural, bond, granulometry, and other material tests in accordance with applicable ASTM methods.
Characterize materials using techniques such as viscosity, DSC, FTIR, granulometry, and density/packing measurements.
Analyze experimental data, quantify variability, investigate outliers, and summarize findings with practical recommendations.
Develop and maintain SOPs, test records, equipment logs, calibration information, and safe laboratory practices.
Support screening of resins, additives, fillers, and aggregate gradations, as well as scale-up and product qualification.
Travel to customer, supplier, partner, and project sites as needed to support field evaluations, technical meetings, product trials, and material qualification activities.