A mining engineering and integrated solutions company present in national and international markets, with a trajectory marked by the competence of its human talents and strong investment in cutting-edge technologies, enabling it to be among the pioneers in the development and implementation of intelligent solutions. TSA is a company that generates and shares knowledge, committed to building a more ethical and responsible society. Headquartered in Belo Horizonte/MG, the company has a team of highly qualified professionals to meet market demands. Do you identify with our values? Register now and join our team! **Responsibilities and duties** As an **Administrative Assistant**, your responsibilities will include: In Finance and Accounting: * Perform activities related to assets and insurance, tax guidance, bank registrations, preparation of management reports, and monitoring of accounting and financial results. * Carry out administrative tasks such as document classification, calculations, entry and description of more complex data, and administrative organization of the department. * Process various payments, accounts payable and receivable, and control the company's financial transactions. Monitor managerial cash flow and perform analysis. * Enter invoices, perform accounting reconciliation, accounting classification, tax calculation, and issue certificates. * Support managers regarding measurement issuance, billing, service invoice issuance, collection tracking and follow-up, and time bank control; **Requirements and qualifications** Required education: * High school diploma; * Proficiency in Microsoft Office Suite; Desired knowledge: * Knowledge of ICMS, PIS, COFINS, IPI, and ISS tax legislation; * Knowledge of tax regulations and tax calculations; * Cost control experience; * Basic understanding of financial mathematics; * Basic knowledge of personnel department routines; * Familiarity with Microsiga system modules. **Additional information** Here’s what we offer: * Meal/food allowance; * Co-payment health insurance plan; * Dental insurance plan; * Transportation allowance or company-provided transportation; * Life insurance; * Wellhub (formerly Gympass); * Psychological support provided through partners; * Partnerships with educational institutions offering discounts for employees and dependents; * Discounts at partner stores and services. Operating since 1992, **TSA Engenharia** provides innovative solutions in automation systems, electrical, instrumentation, information technology, process optimization, commissioning, and turn\-key supplies. Active in Brazil and abroad, with a strong presence in Latin America, TSA operates in the steel, metallurgical, mining, oil and gas, cement, power, and fertilizer markets, guided by its Integrated Model for Sustainable and Sustained Growth. Generating and sharing knowledge is our commitment toward building a more ethical and responsible society.