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  • Mining and Energy

  • Precious Metals

  • Agricultural


Bar Code Sioux Website.PNG


  • Construction Consulting

  • Construction Management Services

  • Construction Materials Procurement


We provide practical advice to help structure your organization, support your business, and safely navigate into the future of the ever-changing global markets.  

Thriving in modern natural resource industries demands deep understanding of the opportunities and issues a business faces. Our professional expertise is the incentive for clients to gain advantage, control risk, and deliver sustainable returns.

Through strategic relationships within the private and public sectors we provide our clients with high-quality information and strong analytical approaches. We bring clarity and understanding to make precise planned decisions.

We create financial solutions adapted to the events of the local and international economy. We offer an integral consultancy in strategic investments, where the markets are constantly analyzed in order to detect new business opportunities.

"Our goal is to be a trusted partner to our investors and associates"
Maria Gabriela Leonelli
President Founder
Sebastian Bruno
Chief Executive Officer


Sioux is a team of professional construction management contractors with experience in project estimations, time and budget management, and seeing a variety of  building projects through to completion.

Our fee for project management is a fixed amount. Beyond the fee, all other expenses are considered “cost of work”. As a result, the owner and our company share a common objective: get the best price, from the right contractor or supplier, for the cost of the work.

In a Construction Management type approach, the owner, architect, and the construction manager work together to ensure the project’s success. It is our duty as your construction management company to protect the owner’s interests throughout the construction process.


You can take advantage of our management services to handle the overall planning, coordination and control of a construction project from the beginning stages of the project until it is completed.

This single point of responsibility helps consolidate all the communication and coordination of the project, and helps avoid some of the engineering/contractor conflicts that sometimes arise in a building project . We can help manage budgeting and scheduling as well as consult on various cost-controlling measure you may be considering. This way, we can learn more about your goals and objectives while creating new and efficient ways to get more out of your labor, materials, and equipment.

We can monitor and document project progress, maintain communications between contractors, subcontractors, and staff, and keep you informed of all developments.


As Construction Consultants our business is only as good as our subcontractors and vendors that become part of our team. We greatly appreciate and value all of our subcontractors and are determined to maintain the highest quality standards for our customers. Due to these high standards we request that all of our subcontractors, vendors and suppliers complete a pre-qualification package that will allow us to determine eligibility to do business with our firm. Email completed Pre-qualification forms and required supplemental information to

Please provide the following supplemental information along with your pre-qualification form:

  • W-9 (Request for Taxpayer Identification Number and Certification)

  • Current General Liability Insurance

  • Current Workers Compensation Insurance

  • O.S.H.A. 300 Logs (For the past 3 years)

  • Current Business Tax Receipt (For your city and Miami Dade County)

  • Current Trade License (Plumbing, Refrigeration, etc.)

  • Surety information

  • 3 supplier references

  • 3 contractor references





We are committed to helping our clients Build Better Construction Companies. Unlike other business consulting firms, we only work with construction companies and contractors. As experienced contractors and business owners, we understand how our clients think and operate, which is why they choose us to help solve their most important challenges.

By utilizing our comprehensive industry knowledge, real-world experience and team of dedicated professionals, we create innovative, customized solutions to help our clients get to the next level of performance and success.


Geopolitical changes, disruptive technologies, and adjusting cost structures around the world are breaking expectations of international commerce. The fast growing and intricate international trade situation certainly present vast dangers. But it is also generating immense opportunities for enterprises that know how to navigate it and are fast and responsive to adapt.


We provide technical advice through our seasoned team of experts. Our independent and objective commercial advice helps to generate value, maximize profits, and adhere to reporting and regulatory guidelines. Our clients are small scale mining companies located mainly in South America, we work directly with financial and government institutions to evaluate  and develop new projects.

Small and Medium scale operations usually have limited funding, and ability to optimize the use of fund is critical in these operations. We have worked with projects across numerous countries and commodities including Precious Metals and Base Metals. Our mining engineering team offers expertise in the following areas:

  • Strategic Development

  • Reserve Estimation

  • Financial and Technical Evaluation

  • Due Diligence and Audits

  • Project Assessment

  • Mine Production, Planning and Scheduling

  • Equipment Selection

  • Operational Optimization

  • Contract Management

Commodity Trading and Risk management
As markets shift from the classic B2B structure to competitive, openly traded commodities, many commodity players experience a significant impact on their businesses. The resulting price transparency and product availability leads to bigger commercial competition in both placing and obtaining goods. Commercial margins come under pressure and erode, and opportunities to arbitrage start to deteriorate but not vanish. Such phenomena can be seen across all commodity markets—energy, oil, coal, metals and mining, and agriculture. By actively targeting and extracting value from prevailing market conditions, it is possible to find commercial success even in mature, commoditized markets. Players need to understand how to leverage their competitive edge, such as by embracing the transition into traded markets, leveraging an asset and logistics portfolio, and adopting new technologies and approaches.
Corporate Responsibility

We understand the role we must play in healthy and functioning capital markets through building trust, transparency, and consistency in business practices. In supporting and advising some of the world’s most important organizations we have an opportunity to provide value that extends far beyond our client base and into the broader marketplace.

A key element of our overall business strategy, corporate responsibility builds on Sioux’s long-standing values and ethical practices. Doing business responsibly while engaging our stakeholders and communities is critical to the sustainability of our business, our people, and our communities.

Corporate Governance Guidelines

With these guidelines, we work to continuously improve our corporate governance process to better serve the interests of our partners, shareholders, customers, and employees. Our corporate governance guidelines outline the structure and policies of our Board of Directors.

AML/KYC Compliance Guidelines

With these guidelines, we work to continue to prevent the process of money laundering and financing of terrorism-related activities. ​ To ensure that all precious metals in the Sioux LLC supply chain are not tainted by conflict or human rights abuses, our Responsible Precious Metals Group Policy, clearly articulates our commitment for an ethical and responsible supply chain. In addition, we collaborate closely with organizations to set the highest codes of conduct for the industry as a whole. Please let us know if you are ever asked by a Sioux representative to do something you consider to be unethical or illegal, or if you observe illegal conduct at our company. You can contact our management via phone or ​email.​

Responsible Sourcing Policy

We are aware of the importance of the relationship with suppliers, that is why all our relationships with suppliers are based on mutual contribution, trust, and respect, the quality of products and services, as well as the integrity of their relationships.

Commercial Building at Night

407 Lincoln Road, Suite 12 I

Miami Beach, Florida U.S.A.

Tel:  305 812 6250


For any general inquiries, please fill in the following contact form:

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