Sondotécnica Engenharia de Solos S.A. is a Brazilian consulting engineering company founded in 1954, initially as a limited liability company, and converted into a publicly traded company in 1980. Over its history, it has built a portfolio of more than 3,500 contracts executed for around 400 clients in different infrastructure and urban development segments. The company’s shares are traded on B3 under the tickers SOND3, SOND5, and SOND6, reflecting its status as a listed company and its presence in the Brazilian capital markets. With revenue of around R$ 211 million in the last reported fiscal year, the company positions itself as an engineering consultancy with diversified operations in sectors such as transportation, sanitation, industry, housing, energy, environment, irrigation, urban development, and oil and gas.

Sondotécnica Engenharia de Solos’ core activity is providing engineering consulting services, encompassing studies and designs, supervision and inspection of works, as well as project management at different stages of the implementation cycle. The company develops preliminary studies, master plans, feasibility studies, basic and detailed designs, and also works in supervision of execution, project and construction management, and in the structuring and execution of privatization and infrastructure concession processes. Its scope also includes preparing and coordinating environmental studies and providing technical support for obtaining the licenses required for implementing and operating projects, including inspection of manufacturing, technical specifications, equipment assembly, pre-operational tests, and commissioning, always with a focus on consulting engineering applied to large public and private projects.

The company’s operating structure is organized by business segments and types of services. In 2024, most of its revenue came from the transportation area, followed by sanitation, housing, urban infrastructure, and other related segments. From a service-type perspective, project and works management and supervision accounted for the majority of revenue compared with design preparation. Sondotécnica Engenharia de Solos has proven technical expertise in project management, planning, and inspection, with a strong track record in transport infrastructure projects for metro and rail systems and related urban mobility works. This specialization positions it to compete in national and international tenders, often in consortia or independently, both against Brazilian companies and larger foreign groups.

The company has a broad geographic presence, with headquarters in the State of Rio de Janeiro and offices in Brazil, in São Paulo and Salvador, as well as bases abroad in Luanda, Angola, and Miami, in the United States. Its international operations have already reached countries in Latin America, the Caribbean, Africa, and the Middle East, including Mexico, Guatemala, El Salvador, Panama, Colombia, Peru, Paraguay, Haiti, the Dominican Republic, Venezuela, Bolivia, Uruguay, Argentina, Senegal, Nigeria, Ghana, Equatorial Guinea, Congo, Angola, and Iraq. Despite this reach, revenue remains concentrated in the Brazilian market, which accounted for 99.7% of net revenue in 2024, while Angola represented 0.3%. The company also structures its overseas operations through its wholly owned subsidiary Sondotecnica International Co., which holds interests in foreign companies, including Sondotecnica USA Corp in Florida, a shareholder of STZ Engineering, LLC, focused on providing engineering services in the North American market.

Sondotécnica Engenharia de Solos’ client base is composed of public agencies at the municipal, state, and federal levels, as well as private companies across various infrastructure sectors. In 2023, the Companhia de Desenvolvimento Habitacional e Urbano do Estado de São Paulo (CDHU) accounted for more than 10% of net revenue through contracts for consulting engineering services related to project preparation, inspection and supervision of third-party project execution, and construction management. The company participates in tenders and requests for proposals in both the public and private sectors, often forming consortia to meet technical and scale requirements in large contracts. There is no dependence on specific suppliers to provide its services, as its main input is the intellectual capital of its technical staff, composed mainly of engineers, architects, geologists, economists, technicians, designers, and CAD operators.

From a regulatory standpoint, Sondotécnica Engenharia de Solos is subject to the legislation applicable to public procurement and the engineering services it performs, particularly Law 14,133/2021, which governs public tenders and administrative contracts in Brazil. In environmental and social matters, its projects and services must comply with licensing rules and requirements established by competent authorities, especially when they involve environmental studies, support for obtaining licenses, and supervision of works in sensitive sectors such as sanitation, transportation, and energy. Abroad, ongoing contracts, such as those in Angola, are subject to local legislation on competition, environmental matters, corporate affairs, and anti-corruption. The company is also registered with the Ministry of Defense, with validity through 2027, as a private entity authorized to perform aerial surveys, category “A,” a credential that expands its ability to carry out specialized field surveys and studies.

In terms of management and quality, Sondotécnica Engenharia de Solos operates with an Integrated Management System certified under ISO 9001:2015 (Quality Management), ISO 14001:2015 (Environmental Management), and ISO 45001:2018 (Occupational Health and Safety Management), with current certificate validity through August 2025. These certifications cover consulting and engineering design services, project management, supervision and inspection of works, including at the international level. The company invests in innovation through TECHLAB, a hub located in São Paulo focused on digital transformation, aimed at developing solutions in Building Information Modeling (BIM) and the use of digital models in infrastructure projects, an area in which it has established itself as one of the pioneers in Brazil. The company is a partner of BIM Forum Brasil, reinforcing integration with the construction value chain that adopts BIM practices as a technological standard.

In the environmental, social, and governance (ESG) field, the company treats these topics as strategic pillars for medium- and long-term value creation. Its ESG management structure includes corporate policies on compliance, anti-corruption, and third-party contracting, as well as a Code of Ethics and Conduct developed in partnership with an external consultancy, which guides relationships with employees and other stakeholders. Since 2022, Sondotécnica Engenharia de Solos has been a signatory of the UN Global Compact Brazil Network, committing to implement the ten principles related to human rights, labor, environment, and anti-corruption, with a focus on Sustainable Development Goals considered material to its business, such as SDG 6 (clean water and sanitation), 8 (decent work and economic growth), 9 (industry, innovation, and infrastructure), and 11 (sustainable cities and communities). In 2023, it joined Instituto Ethos and adhered to the Business Pact for Integrity and Against Corruption, obtaining the Clean Company seal. The company is preparing its first ESG report for the year 2024, which is expected to include a materiality matrix and key performance indicators, although this first cycle will not yet include TCFD recommendations or a greenhouse gas emissions inventory.