Freelance Geotechnical Field Technician

Sibelco Group; Op de Bos; On-site; EUR 65,000 - 101,000; Full time

Job summary

Sibelco Group in Maastricht Op de Bos is seeking a Freelancer/External Consultant for Geotechnical & Hydrological Monitoring, Laboratory Operations, and Surveying & Site Measurement across mining and quarry sites. You will perform field monitoring, install equipment, collect samples, and ensure data quality.

Role requires Dutch MBO Level 3/4, experience with surveying and lab equipment, and a valid driver’s license. English and French are essential; Dutch/German knowledge is a plus.

Qualifications

• Dutch MBO Level 3/4 or equivalent in a technical discipline.
• Experience in surveying, laboratory testing, field monitoring, mining or construction preferred.
• Experience operating surveying, monitoring or laboratory equipment is an advantage.
• Valid driver's license required.
• Specialized geotechnical monitoring and laboratory training will be provided by Sibelco.

Responsibilities

• Conduct field monitoring activities at mines and quarries, including geotechnical, hydrological and environmental measurements.
• Install, maintain and inspect monitoring equipment such as inclinometers, piezometers and other monitoring devices.
• Collect, prepare and transport field samples according to established procedures.
• Ensure monitoring data is accurately recorded and reported.
• Perform soil, rock and water testing in accordance with laboratory standards and procedures.
• Prepare samples and maintain laboratory equipment.
• Support quality assurance and quality control activities within the laboratory.
• Maintain accurate testing records and documentation.
• Perform basic surveying activities using drone systems, GPS equipment, Total stations, levelling instruments and inclinometer devices.
• Process and organize survey data for engineering review.
• Support geotechnical investigations and site assessments across Sibelco operations.
• Assist geotechnical engineers and mining engineers in field projects.
• Participate in site inspections and monitoring campaigns.
• Support deployment of new monitoring technologies and equipment.
• Comply with all safety requirements and field procedures.
• Ensure work is conducted safely in mines, quarries and field environments.
• Report hazards, incidents and unsafe conditions promptly.
• Maintain compliance with laboratory and field quality standards.
• Maintain field and laboratory equipment in good working condition.
• Coordinate calibration, maintenance and repairs of instruments.
• Manage inventory of sampling and monitoring equipment.

Skills

Geotechnical monitoring

Laboratory testing

Surveying

Data management

Instruments handling

MS Office

Education

Dutch MBO Level 3/4 or equivalent vocational qualification

Tools

Drone systems

GPS equipment

Total stations (tachymeter)

Levelling instruments

Inclinometers

Laboratory equipment

Job description

Sibelco Group in Maastricht Op de Bos is seeking a Freelancer/External Consultant for Geotechnical & Hydrological Monitoring, Laboratory Operations, and Surveying & Site Measurement across mining and quarry sites. You will perform field monitoring, install equipment, collect samples, and ensure data quality.

Role requires Dutch MBO Level 3/4, experience with surveying and lab equipment, and a valid driver’s license. English and French are essential; Dutch/German knowledge is a plus.