We are seeking a surveillance technician for supervision of railway construction projects in the province of Navarra. STATIONS: CAPARROSO, CARRASCAL AND UHARTE–ARAKIL. Candidates should have the ability to carry out surveillance tasks during construction execution, with prior experience in technical assistance roles on land transport infrastructure projects (railways). A valid driving license B1 is essential. Night work required. ARDANUY INGENIERIA S.A. is an engineering consultancy firm with over 25 years of experience in the railway sector. The company has a workforce of 400 employees and achieved sales of 30 million Euros in 2024. The company's main offices in Spain are located in Barcelona, Madrid, Valencia, Seville, and Tenerife. It has subsidiary companies in Lithuania, India, Algeria, Peru, and Colombia. The company specializes in design and construction management of railway infrastructure and systems (signaling, overhead catenary, substations, telecommunications, etc.) and is accredited to perform Independent Safety Assessments (ISA). Job type: Full-time, Permanent contract Salary: 18,000.00€-21,000.00€ per year Benefits: * Flexible working hours * Reduced working hours on Fridays Application questions: * What are your salary expectations? Experience: * Railway construction site supervision: 4 years (Required) Job location: On-site