Mix Design Specialist

Martin Marietta • Blaine, MN

8d • Hybrid

About The Position

Martin Marietta is looking for a Mix Design Specialist to join their Quality Control team. The Mix Design Specialist is responsible for developing, testing, and optimizing asphalt mix designs to meet MnDOT specifications and project requirements. This role ensures consistent plant production quality through oversight of materials, processes, and compliance with state and federal standards. The position plays a critical role in ensuring asphalt mixtures meet performance, durability, and safety criteria. This is a union position and membership in the IUOE Local 49 is required.

Requirements

• High School diploma or equivalent.
• Bachelor’s degree in civil engineering, Construction Management, Materials Science, or related field OR equivalent industry experience.
• Minimum of 3–5 years of experience in asphalt mix design, plant operations, or materials testing.
• Valid US drivers license
• Must possess or be able to obtain the following MnDOT certifications: APTC – Aggregate Production Technician Certification, BPTC – Bituminous Plant Technician Certification, BMDC – Bituminous Mix Design Certification, BSIC – Bituminous Street Inspector Certification
• Strong understanding of asphalt materials, aggregate properties, and mix design methodologies (Superpave, Marshall, etc.)
• Knowledge of MnDOT specifications and QA/QC procedures
• Proficiency with laboratory testing equipment and data analysis tools
• Familiarity with plant control systems and production processes

Nice To Haves

• Experience working directly with MnDOT projects or similar DOT agencies
• Background in field inspection or construction quality assurance

Responsibilities

• Develop, evaluate, and maintain asphalt mix designs in accordance with MnDOT specifications.
• Perform laboratory testing including aggregate gradation, asphalt content analysis, volumetric properties, and performance tests.
• Adjust mix designs and plant settings to optimize product quality, cost efficiency, and performance.
• Maintain documentation and records of mix designs, test results, and compliance reports.
• Monitor plant production processes to ensure adherence to approved mix designs.
• Collaborate with plant operators to troubleshoot production issues and ensure consistent product quality.
• Observe stockpile management and ensure materials meet required specifications.
• Ensure all mix designs and production practices comply with MnDOT, ASTM, and AASHTO standards.
• Coordinate with MnDOT representatives and inspectors during plant audits and project approvals.
• Recommend improvements in materials, processes, and testing procedures.
• Stay informed of industry trends, new technologies, and evolving MnDOT requirements.
• Participate in quality improvement initiatives and internal audits.

Benefits

• Conditions and terms of employment and benefits are in accordance with the collective bargaining agreement for the International Union of Operating Engineers (IUOE) Local 49.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level