Heygon Araújo

- Business reporting, dashboarding and analysis (e.g. by using SAP Analytics Cloud) - Implement statistics analysis, for instance by using hypothesis testing, for Marketing Campaigns and Order Entries. - Develop routines to improve data reliability, efficiency and quality. - Quality checks in the Data Warehouse and Transactional System.

- Led a team of 25 mechanics dedicated to ensuring the lofty reliability of a fleet with 20k rail wagons. - Wagon’s Reliability rose significantly by 36% (in millions of kilometers between failure) - Reduction of 18.75% in defects caused by rework

- Designed a simulation model by using Arena and Data Analytics to forecast Vale’s Iron Ore Supply Chain Capacity in the Northern Corridor, coming to 99.8% of precision. - Optimized Locomotives Allocation Program of S11D Project by using forecasting models and making trade-off between different suppliers, leading to a saving of at least US$ 37,2 MM. - Simulated "what-if" questions and support making decisions for S11D Scope Review and Optimization reaching more than R$ 1 billion in savings.

- Noticeably increasing of 20.8% in the maintenance team productivity. - Develop Computational Vision, Image Processing algorithms and Machine Learning to detect defects in rail wagons components, reaching 83.04% of accuracy. Link - Using lean thinking and standardized work, consumption of maintenance material declined by 27% in 1 year, leading to R$624k in savings.

- Led strategic analysis regarding fuel freight trains schedule in order to avoid catastrophic failures on railroad operations. This analyses reduced an estimated US$21.7 million dollars of monthly losses from traffic congestion delays; - Successfully completed a project which aimed to attest to a technical Norm (the Union Internationale Des Chemins de Fer. UIC 406) for mixed-traffic railways, which recommend 60% as an operational efficiency factor.

Assist in strategic activities of logistical planning in a long-term horizon of the company, such as computer simulation of railway capacity using the Extend software.