Job Summary: We are seeking a Technical Office Manager to ensure the proper technical, contractual, and economic management of infrastructure projects and to support the Site Management Team. Key Highlights: 1. Good working atmosphere and team-oriented culture 2. Continuous training and learning 3. Real opportunities for professional development and growth DESCRIPTION COMSA Corporación is an international group with over 130 years of experience and a team of more than 5,000 professionals operating across Europe and Latin America. We are a leader in the infrastructure and engineering sector, firmly committed to integrating sustainability into our organizational strategy. We are currently seeking a TECHNICAL OFFICE MANAGER for Cantabria. MAIN RESPONSIBILITIES: Ensure proper technical, contractual, and economic project management through thorough documentation review, measurement and cost control, and technical support to the Site Management Team. Guarantee that execution complies with contractual terms, proposing optimization solutions and strategies to improve efficiency, productivity, and profitability of the works. * Comprehensive project review to identify contractual issues, technical inconsistencies, and potential risks affecting project progress. * Measurement and cost control, including preparation of cost projections and final cost estimates (EAC). * Monthly measurements for production calculation, certification, and economic monitoring. * Preparation and updating of budgets, breakdowns, and comparative tables using specialized software (Presto, Menfis). * Document management and technical control of drawings, specifications, change orders, and modifications. * Proposal and valuation of improvement strategies to address contractual or technical issues. * Coordination with the Site Management Team, production teams, and subcontractors to ensure correct interpretation of documentation and measurement criteria. * Preparation of periodic technical and economic reports for project management. * Advanced use of CAD tools (AutoCAD) for drawing review and updates. * Intensive use of Office 365 for reporting, data analysis, and document coordination. WHAT WE OFFER? * Good working atmosphere and team-oriented culture surrounded by experienced professionals who will accompany you throughout your journey with the company. * Continuous training and learning. * Real opportunities for professional development and growth. - Flexible compensation plan (subscription to services — health insurance, childcare, transportation, meals, and life insurance — enabling tax savings). * Competitive salary. * Flexible start and end times. * Intensive workday on Fridays. * One remote working day per week. * Intensive workdays during July and August. At COMSA Corporación, we care for people as much as we do for our projects, promoting the removal of barriers to ensure equality and advocating for diverse and inclusive workplaces, valuing talent and capabilities regardless of age, gender, origin, sexual orientation, religion, disability, or any other personal condition. REQUIREMENTS MINIMUM REQUIREMENTS: * Degree in Civil Engineering (Civil Engineering, Water Resources and Ports) or Industrial Engineering (officially recognized in Spain, mandatory). * Minimum of **5 years’ experience in a Construction Technical Office**, preferably in construction or civil engineering projects. * Experience in **project review, measurements, certifications, and technical-economic control of construction works**. * Knowledge of **cost tracking, variance analysis, and final cost estimation (EAC)**. * Experience in **preparing and reviewing measurements, budgets, and production control**. * Ability to **interpret drawings, construction projects, and technical specifications**, as well as manage contractual modifications. * Proficiency in **Presto / Menfis**, **AutoCAD**, and **Microsoft Office 365** (especially Excel). * Prior experience in **infrastructure, urban development, hydraulic, or industrial projects**, as well as coordination with Site Management Teams, clients, and subcontractors is desirable. You are the ideal candidate if... * you are passionate about your profession and eager to learn and develop your career; * you consistently go the extra mile and strive for excellence in everything you do; * you want to make a difference and share your vision and expertise to contribute to project development.