Job Description

Role Overview

We are looking for a highly detail-oriented and organized Concrete Laboratory Technician to support our work in architectural UHPC (Ultra-High Performance Concrete) and GFRC (Glass Fiber Reinforced Concrete). This role is critical to ensuring material performance, consistency, and quality for cutting-edge façade and cladding applications. The ideal candidate is meticulous, process-driven, and thrives in a lab environment where accuracy and repeatability are essential.

Key Responsibilities

• Prepare, mix, cast, cure, and test UHPC and GFRC samples in accordance with ASTM, PCI, and internal testing protocols.
• Conduct physical and mechanical testing including compressive strength, flexural strength (MOR/LOP), tensile testing, fiber dispersion, and dimensional stability.
• Support mix design development, including batching precision, raw material evaluations, pigment/color applications, and rheology testing.
• Assist in developing and maintaining a quality database for mix performance, batch records, and testing results.
• Operate, calibrate, and maintain laboratory equipment such as mixers, scales, curing chambers, compression/flexural test machines, and others.
• Maintain rigorous documentation of all testing activities to ensure traceability and reproducibility.
• Work closely with engineers and production teams to translate lab findings into scalable manufacturing processes.
• Support raw material supplier evaluations, sample sourcing, and material characterization.
• Ensure compliance with lab safety protocols, quality standards, and certification requirements.

Qualifications

• High school diploma or associate degree in materials science, civil engineering, or a related technical field (bachelor’s degree preferred but not required).
• Hands-on experience in a cementitious materials laboratory (UHPC, GFRC, precast, or concrete preferred).
• ACI Laboratory Technician certification (Level 1 or higher) is a strong plus.
• Proven ability to follow testing standards (ASTM, PCI, ACI) with high precision.
• Strong organizational skills and ability to manage multiple samples and tests simultaneously.
• Excellent attention to detail with a disciplined approach to data recording and reporting.
• Ability to work independently and collaboratively in a fast-paced R&D and production support environment.
• Commitment to safety and quality in all lab practices.

Physical Requirements

• Ability to lift up to 50 lbs. and handle heavy molds, raw materials, and samples.
• Comfortable working around industrial mixers, curing equipment, and testing machinery.
• Ability to stand for extended periods and work in varying temperature and humidity conditions.

Note to Recruitment Agencies: We love your enthusiasm, but we prefer to connect with our candidates directly. Building Blocks is not partnering with external agencies for this search, so please save the outreach, we’ve got this one covered. Any resumes submitted without a signed agreement in place will become the property of Building Blocks and no fees will be paid.

Building Blocks is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law.

Accommodations: If you require reasonable accommodation in completing this application, interviewing, or otherwise participating in the employee selection process, please direct your inquiries to People Strategy Department - 321-338-7299.

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