Laboratory Responsible - Phoenix, AZ

Position Summary: The Laboratory Responsible is accountable for themanagement, operation, and quality oversight of the construction materials laboratorysupporting a heavy civil hydropower project. This role ensures that all testing activities forconcrete, aggregates, soils, and other construction materialsmeet project specifications, international standards, and regulatory requirements. The role is critical to ensuringstructural integrity, durability, and complianceof dam and associated infrastructure works.

Key Responsibilities: 1. Laboratory Management & Operations Establish, manage, and operate theon-site construction materials laboratory .Ensure laboratory compliance withproject specifications, ISO/ASTM/AASHTO standards, and client requirements .Oversee calibration, maintenance, and proper use of laboratory equipment. Develop and implement laboratory procedures, workflows, and quality systems.2. Materials Testing & Quality Control Supervise testing of: Concrete (fresh and hardened) Cement and admixtures Aggregates (gradation, abrasion, etc.)Soils and earthworks (compaction, classification, permeability) Rock materials (for dam foundations and embankments) Ensure accuracy and reliability of test results. Validate mix designs for structural and mass concrete used in dam construction. Monitormass concrete temperature controland cracking risk mitigation.3. Compliance & Reporting Ensure all testing aligns with: Project technical specifications International standards (ASTM, BS, AASHTO, ISO) Client/Engineer requirements Prepare and review: Test reports and certificates Quality control reports Non-conformance reports (NCRs) Maintain detailed laboratory records and traceability of materials.4. Coordination & Communication Coordinate with: Construction teams (site engineers, contractors) Quality Assurance/Quality Control (QA/QC) teams Client representatives and consultants Provide technical advice on materials performance and suitability. Support inspections, audits, and third-party testing.5. Mix Design & Technical Support Develop and optimizeconcrete mix designs, especially for: Mass concrete (dam body) High-strength structural elements Durability in aggressive environments Analyze test data to improve material performance and reduce risks. Support troubleshooting for: Concrete defects Strength issues Material inconsistencies6. Personnel Management Supervise laboratory technicians and staff. Train team on testing standards, safety procedures, and best practices. Ensure adequate staffing and competency levels.7. Health, Safety, and Environmental Compliance Enforce strict adherence toHSE policieswithin the laboratory. Ensure safe handling of chemicals, materials, and testing equipment. Maintain a clean, organized, and hazard-free work environment.

Qualifications & Requirements: Education Bachelor's Degree in: Civil Engineering Materials Engineering Geotechnical Engineeringor related field Experience7-15+ yearsof experience in construction materials testing. Strong experience onlarge-scale infrastructure projects(hydropower, dams, bridges, or heavy civil works).Proven experience withmass concrete and dam constructionpreferred. Technical SkillsDeep knowledge of: Concrete technology (especially mass concrete) Soil mechanics and earthworks Rock testing (preferred) Proficiency in standards: ASTM, AASHTO, BS, EN, or equivalent Familiarity with laboratory quality systems (ISO 17025 is a plus) Soft SkillsStrong leadership and team management ability High attention to detail and analytical thinking Excellent communication and reporting skills Ability to work in remote, project-site environments