About us

GCS is a business consulting and auditing firm that has been in the market since 2009.

The company started its activities by managing the implantation of ERP software. As a consequence of that project and the expertise achieved, it expanded its operations to meet the needs of clients that were seeking to improve efficiency and profit, with secure and assertiveness. To offer a high quality service, GCS currently has its own team of expert consultants and partnerships with public and private agencies. 

EXPERIENCED PROFESSIONALS: Operational management, administration, finances, education, IT and statistics.

PARTNERSHIP WITH UNIVERSITIES: Implementation of quality and management techniques.

PARTNERSHIPS WITH COMPANIES: Management systems, IT, accounting, human resources, law, and environmental management.

GCS Team

Luis Sergio Castro e Silva

Production Engineer, Business Administrator and Environmental Management Technologist

Consultant and Business Auditor. 30 years + working experience in a multinational company of projects and manufacturer of electricity, water, and gas meters and systems.


Our Dynamic Team

The GCS team professionals has in the area including: Logistics, Production and Quality, Industrial Engineering. In addition, they also work together with GCS, Innovation and Technology Managers in the Pharmaceutical Industry, Project managers at a high level of quality.

Maria Carolina Hack

Statistician and Postgraduate Certification in Business Administration

Consultant and Auditor in the areas of supply chain and business management. Carolina is the brains behind the qualitative and quantitative data analyses supporting GCS’s projects. Having more than 10+ years of experience in data analyses and market research ensure projects successfully operate.


Increase the efficiency and profits of our clients by identifying improvement opportunities and implementing assertive actions to achieve the best results.


To be a renowned company for the quality of work delivered, which builds solid partnerships, aspiring their consultants team to develop themselves professionally.


Responsibility and Ethics;
Respect, trust, transparency;
Constant improvement;
Work with enthusiasm, willingness, and joy.