Marcelo Conceicao DE ARAUJO

Brazilian Aluminium Company (CBA) is one of the largest aluminum companies in Brazil and Latin America. Opened in 1955, it produces high-quality aluminum in an integrated and sustainable way. With an installed capacity to produce 100% of energy from its own hydroelectric plants, CBA mines bauxite, transforms it into primary aluminum (ingots, billets, rebars, and slabs), and transformed products (plates, coils, sheets, and profiles).

• Operate and maintain the plants (powerhouse, dam, substation) safely and maintain maximum generation, using the best available resources
• Perform isolation, grounding, and normalization maneuvers of electrical equipment and circuits.
• Perform electrical maintenance in low, medium, and high voltage installations such as power, command, and protection panels, generators, rectifiers, transformers, circuit breakers, etc.
• Inspect the facilities and equipment, verifying the normal operating conditions.
• Carry out the activities provided for in the Preventive Maintenance Plan of the Equipment that is part of the generation system, according to the defined periodicities, recording, controlling, and correcting the anomalies detected, observing the procedures established by the operation and maintenance area.
• Control the stock level of spare parts, taking care to maintain adequate levels for the operational safety of generation equipment.
• Prepare technical maintenance reports, detailing the failures, causes, and corrective processes recommended or employed to report the events that occurred and the technical solutions employed.

Mills is one of Brazil’s largest specialty engineering services companies and the largest provider of concrete formwork and tubular structures and motorized access equipment for the Brazilian market.

Partner of Sullair which is a major American manufacturer of portable and stationary rotary screw air compressors designed for commercial and industrial use. Founded in 1965 in the town of Michigan City, Indiana U.S.A., Sullair has manufacturing facilities in Michigan City that distribute and service air compressor packages and systems worldwide.

· Maintenance of heavy equipment, Perform corrections in electrical, mechanical, hydraulic, and pneumatic systems and diesel engines in compressors and generators.

· Inspected structures, machinery, and equipment to determine failure and causes for concern.

· Dismantled machinery to access, remove and replace worn components and keep production within optimal tolerances.

· Maintained equipment performance by lubricating and cleaning components.

· Performed preventive maintenance to promote machine reliability and longevity.

· Updated daily production logs and informed management of production incidents or non-conformance issues.

Johnson Controls is an American company based in Milwaukee that offers products and services to optimize energy and operational efficiency for buildings, motor batteries, electronics, and automotive systems.

· Field Services

· Installation and maintenance of network systems, electronic security equipment, CCTV, alarm, and access control for clients such as the US Embassy and Consul, Google, Facebook ...

· Cooperate with the technical team and share information across the organization

· Followed safety procedures to avoid injuries in the field.

· Provided technical support to troubleshoot, repair, and maintain operational efficiencies in hydraulic, mechanical, and electrical systems.

· Reviewed technical documentation to complete equipment maintenance and repair.

Hyundai Rotem is a global heavy industry company that specializes in manufacturing rolling stock, military equipment, and plant engineering. It can produce all types of rolling stock, including electric multiple units (EMUs), high-speed trains, engine locomotives, wireless trams, and magnetic levitation (maglev) trains.

· Corrective and preventive in the undercarriage, replacement of electric motors, reducers, rollers, suspension, bogie, pantographs, repair in embedded electronics (specialty in embedded electronic equipment), in pneumatics, electrical and refrigeration, use of measuring instrument, caliper, micrometer, in addition to retrofit, elaboration of technical reports and work plan

· Expert in ATC communication systems (ANSALDO STS) and its integrated technologies ATP, ATS, and ATO.

· Safely installed new electrical components, fixtures, and motors in addition to testing systems to enhance power flow.

· Tested electrical systems functionality and continuity of circuits using devices such as ohmmeters, voltmeters, and oscilloscopes.

CCR Metrô Bahia is a privately held Brazilian company from Salvador, capital of Bahia. It holds the public concession for the Metroviário System of Salvador and Lauro de Freitas.

• Corrective maintenance on the undercarriage, in addition to maintenance on the installations' equipment, elevators and escalators, hydraulic pumps, underground ventilation system, and use of the SCADA system for monitoring.
• Specialist in the CBTC Siemens railway control and the signaling system, I worked directly with technicians from Germany, making updates to the system, monitoring faults in real-time, and developing suggestions to improve the system.

Construcciones y Auxiliar de Ferrocarriles is a Spanish publicly listed company, which manufactures railway vehicles.

CAF offers comprehensive global rail solutions which, in addition to the supply of trains, includes viability studies, civil work, electrification, signalling, maintenance and system operation in some cases.

• Preventive corrective in rolling stock of CPTM (series 7000,7500, 8000), verifying malfunctions, evaluation and replacement of components, performance tests, detection of defects and repairs in electronic circuits, activities in tires, in inverters VVVF and IGBT power transistors, high-voltage converters, in AC asynchronous motors, adjustment in sensors, in addition to retrofit of equipment, expertise in ATC (Automatic train control)
• My previous experience with electronics has allowed the company to save money by sending equipment to the manufacturer to reapply in other countries, together with a team we have developed an on-board electronics maintenance department
• Manage tooling, tooling maintenance, and the inventory of replacement tools.

Lenoxx Electronics Corporation is an American distributor of electronic equipment. The brand appeared in the late 1980s as a transportable stereo boombox model.

• Perform under supervision, technical maintenance work on electronic equipment, in special printed circuit boards, smd’s and CI’s components, replacing or repairing with the help of diagrams and technical documentation
• Ability to identify defects in Smd components