Mix Design Specialist

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. This is a union position and membership in the IUOE Local 49 is required.

Key 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.

Regulatory Compliance

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.

Required Qualifications

High School diploma or equivalent.

Bachelor’s degree in civil engineering, Construction Management, Materials Science, or related field OR equivalent industry experience.

Minimum 3–5 years of experience in asphalt mix design, plant operations, or materials testing.

Valid U.S. driver’s license.

Certifications (MnDOT Required)

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

Technical Skills

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.

Preferred Qualifications

Experience working directly with MnDOT projects or similar DOT agencies.

Background in field inspection or construction quality assurance.

Analytical thinking and attention to detail.

Problem‑solving and root cause analysis.

Strong communication and collaboration skills.

Ability to manage multiple projects and deadlines.

Commitment to safety and compliance.

Working Conditions

Combination of laboratory, office, and outdoor plant environment.

Exposure to high temperatures, dust, and heavy equipment.

Occasional travel to production and project sites as needed.

Physical Demands
While performing the duties of this job, the employee is occasionally required to stand, walk, sit, use hands to handle or feel objects, tools, or controls, reach with hands and arms, climb stairs, balance, stoop, kneel, crouch or crawl, and talk or hear. The employee must occasionally lift or move up to 50 pounds. Specific vision abilities required by the job include close vision, distance vision, peripheral vision, depth perception, and the ability to adjust focus.

Benefits

Medical

Prescription Drug

Vision

Dependent Care Reimbursement Account

Wellness ProgramsEmployee Assistance Plan

Paid Holidays and Vacation

401(k) with Company matching

Pension

Salary Continuation – Short-Term Disability

Long-Term Disability Options

Employee Life Insurance

Business Travel Accident Insurance

Direct Deposit Payroll

Educational/Tuition Assistance Plan

Matching Gift Program

New Auto Purchase Discount Plans

Salary
Base salary rate for this position is $47.66 per hour, in accordance with the collective bargaining agreement for the International Union of Operating Engineers (IUOE) Local 49.

Equal Employment Opportunity
At Martin Marietta, we are proud to be an Equal Opportunity Employer. We are committed to providing an environment of mutual respect where equal employment opportunities are available to all qualified applicants and teammates. We celebrate diversity and commit that qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

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