{"id":4073666,"url":"https://alion.io/job/raubex-laboratory-supervisor","title":"Laboratory Supervisor","company":{"id":4495585,"name":"Raubex","domain":"raubex.com","url":"https://alion.io/company/raubex","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Simplify","truth_index":null},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"middle","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Pretoria, South Africa"],"countries":["ZA"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":3,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-11-11T14:34:11Z","employer_posted_date":"2026-11-11","last_verified_at":"2026-11-11T14:34:11Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"National Asphalt is seeking suitably qualified and experienced candidates for Laboratory Supervisor positions at various sites across the country. Successful candidates will perform advanced and routine laboratory testing, support junior staff, and ensure the technical quality and reliability of laboratory results.Although successful candidates will be based at specific sites, the role may require work at other sites within the region. Applicants must therefore be willing and able to travel as required.\nKEY RESPONSIBILITIES:\nLaboratory Testing and Equipment\nPerform all laboratory technician duties, including advanced and routine testing.\nCalibrate the plant and ensure that the product complies with the mix design.\nVisually monitor incoming aggregate, binder and asphalt.\nEnsure that all laboratory equipment is calibrated and in good working order.\nQuality Assurance and SafetyCapture, review and verify test results before release.\nEnsure compliance with approved test methods and quality procedures.\nAssist with troubleshooting and technical investigations.\nParticipate in internal audits and corrective actions.\nPlan and participate in internal and external correlations.\nEnsure compliance with company safety procedures.\nTeam Supervision and DevelopmentSupervise and mentor laboratory technicians and testers.\nProvide training on test methods and laboratory equipment.\nManage overtime and staff work schedules.\nKeep laboratory staff informed of all relevant work matters.\nSupplier and Client LiaisonCommunicate with suppliers on relevant laboratory matters.\nLiaise with clients to follow up on approved test results.\nQUALIFYING CRITERIA:\nGrade 12 and a relevant Degree or National Diploma in Civil Engineering, Chemistry, or a related field.\n3-6 years of proven asphalt laboratory experience.\nComputer literacy.\nReport-writing skills.\nAnalytical skills.\nGood communication skills.\nInterpersonal skills.\nA commitment to teamwork and a willingness to go the extra mile to achieve team objectives.","description_format":"text","description_chars":2008,"description_truncated":false,"requirements":{"experience_years_min":3,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Transport 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