At Grupo BALLE, we are seeking a methodical, results-oriented individual with high mobility, responsible for generating and integrating estimates (quantities and billing schedules) with field validation to ensure timely and rejection-free invoicing. **Responsibilities** * Conduct on-site measurements (quantities) and document progress using sketches and geotagged photographic evidence. * Integrate estimation generators by item and billing schedules in accordance with the contract, catalog, and Unit Price Analysis (APU). * Validate quantities against drawings, logs, reports, and prior estimates; monitor extraordinary figures. * Upload evidence and ensure traceability in the ERP system; maintain a complete billing file. * Deliver estimates on time; address clarifications and obtain client approval (Vo. Bo.). * Coordinate with Operations, Cost Control, Contracts, Quality, and Finance/Accounts Receivable. **Requirements** * 2+ years of experience generating estimates in construction/services (public or private projects). * Proficiency in quantity take-offs, item catalogs, APU, advance payment amortization, retention amounts, and final settlements. * Intermediate-to-advanced Excel skills (SUMIFS/COUNTIFS, XLOOKUP or INDEX+MATCH, Pivot Tables, data validation). * Ability to read construction drawings; basic AutoCAD/Bluebeam knowledge preferred. * Experience using mobile apps for evidence collection and management (e.g., Calixe/Humand or similar). **We Offer:** Base salary commensurate with experience ($13,000–$15,000 net monthly) Statutory benefits from Day 1. BALLE Culture: High performance, safety first, growth based on merit. **Work Schedule:** Monday to Friday: 9:00 AM to 6:00 PM (Office-based) 60-minute lunch break Position Type: Full-time **Benefits:** Option for an indefinite-term contract **Experience:** **Estimation Generator: 2 years (Mandatory)** Position Type: Full-time Salary: $13,000.00–$15,000.00 per month Experience: * Estimation generation: 2 years (Preferred) Work Location: On-site employment