Guillermo Etse, PhD


Extensive experience in the analysis and design of toll building structures and foundations, and particularly of complex structures for heavy industrial facilities such as process towers of cement plants, silos, mill foundations, and nuclear plant structures. He has extensive experience and deep know-how in linear and non-linear finite element analysis and design of structural and foundation systems subjected to both static and dynamic excitations, particularly seismic, wind and machine excitations. Extensive professional experience in structural designs of reinforced concrete and steel structures in Germany, USA, Spain, and South America, particularly Argentina, Bolivia, Peru, Chile, Brazil and Colombia. Extensive experience in large machine foundation designs attending vibration mitigation, in structural retrofit and structural reliability, in soil-foundation-structure dynamic interaction analysis, and the design of large multicell silos.

His experience covers also the development of accurate constitutive models for concrete, soils, mortars, and other structural materials to be used in non-linear computational analysis of structural behaviour. He published 41 research articles in indexed journals, 12 articles in indexed books, and has over 150 presentations in conferences and congresses, among of them, 18 as a keynote speaker.


David Keough

Non-Executive Director

Mr. Keough is an experienced mining executive with over 35 years of practice in the mining industry including, exploration, engineering, mine operations (Open Pit and Underground), corporate development, contracting, consulting, projects and construction. His extensive geographic and corporate mining experience ranges from: Latin America, North America, Europe, Africa and Asia Pacific. He has direct experience in a number of commodities including precious metals, base metals, mineral sands, and lithium and has held a number of executive director positions with both private and public companies in Australian and Canada, with broad experience serving on Board audit committees, sustainability committees and compensation committees.

During his 35-year career, Mr Keough worked for Placer Dome (Australia), Minera Alumbrera (Argentina), and spent 6 years with Goldcorp Inc in key corporate development, and operational roles in numerous countries before his appointment as Executive Vice President and Chief Operating Officer for Crocodile Gold.  He later served as Executive Director and Chief Operating Officer for Goldrock Inc, which successfully permitted for construction the Lindero gold project (Argentina) which was subsequently acquired by Fortuna Silver Mines Inc.

Mr. Keough holds a bachelor of science and post graduate diploma (Mineral Economics) from James Cook University (Queensland) and is a Fellow of the Australian Institute of mining and metallurgy and is an accredited Chartered Professional (Management). He also holds open-pit mine manager’s certificates of competency (Western Australia).


José Marún

Non-Executive Director

Mr Marún joined the board of SAXUM Engineered Solutions in 2021 as a Non-Executive Director and in relation to the operations of this company worldwide. He is a Mining Engineer, who graduated from the National University of San Juan, Argentina, with over 38 years of experience in copper and gold mining operations. He has completed a specialization in international business at the London Business School Global Business Consortium. He was operations manager of Ernest Henry Mine, in Australia (2001-2004), and Operations Manager of Minera Alumbrera in Argentina (2005-2006). He was General Manager of Xstrata Tintaya and Executive Vice President of South American operations of Xstrata Copper , for Peru, Chile and Argentina. Between 2007 and 2010, he was also a member of Antamina's partner advisory committee. In addition, he was Executive General Manager of Operations for Argentina and Chile at Glencore (2013-2015). From 2015 to June 2018, he was General Manager and Executive President of Komatsu Mitsui Maquinarias del Perú SA. He is currently also a Non-Executive Director of this company, as well as Director of San Ignacio de Morococha SA, of Peru.

RAUL (contador)

Raúl Napadensky

Non-Executive Director

Raul is a professional of great prestige and recognition in business and specializes in solid tax and finances. He is a National Public Accountant graduated from the National University of Tucumán, Argentina, in 1982. He took several postgraduate courses in subjects such as Auditing, Finance, Business Administration, etc.
He began his professional career as an Associate Accountant in an Accounting Firm, and after a few years, founded his own. During his career of more than 40 years as a professional, he worked as an Auditor and Tax-Accounting Advisor in various firms.
He joined SAXUM in 2020 first as Auditor and Tax-Accounting Advisor, and then also became part of the Board of Directors. He is in charge of reviewing and controlling the firm's administrative, accounting, labor and tax procedures. He is the permanent consultant of all the administrative areas of the company.


Néstor Lares

Chief Operating Officer

Nestor is an Industrial Engineer and Project manager with a strong leadership profile, focused on developing projects and operations within budget and schedule. Experienced working with projects in Argentina, Brazil, Mexico, and Russia. Successful experience managing industrial and engineering projects, in highly demanding environments. Experienced working with multicultural, multidisciplinary and intercompany teams of professionals. Great skills for organization, planning and negotiation. Experienced in the execution of field project, field operations, and engineering projects.

Nestor was the General Project Manager of the Lindero EPCM Project. He was in charge of the following:

  • Coordination of the development of the Detailed Engineering for the construction of the entire project including Civil, Structural, Mechanical, Piping, Electrical and Instrumentation and Architectural for all areas of the plant, excluding the mine and associated roads.
  • Coordination of the Procurement services of the project to develop the specifications, bidding process and the purchase of all equipment and services necessary to complete the construction, start-up and commissioning of the plant.
  • Coordination of the Construction Management services of the entire project at different stages with the objective of ensuring, through close monitoring, the coordination and correct execution plan in accordance with the Master Schedule, CAPEX and updates. Emphasis was placed on following the technical specifications developed throughout the engineering phases with rigorous measurement and quality control systems.

Pablo Dawidowicz

Chief Financial Officer

Pablo is a Certified Public Accountant with a degree obtained at the National University of Tucuman, Argentina, where he also took postgraduate courses in Business Administration. He has extended experience in financial evaluations and project feasibility, particularly regarding companies related to engineering and construction management businesses.

At SAXUM he is also in charge of Project cost control, analysis and follow-up. Pablo has been working at SAXUM for over 12 years. His responsibilities cover multiple activities including the financial and tax control of all SAXUM companies in Argentina, Brazil and the USA, as well as their intercompany balances. For this purpose, he manages the different tax companies of SAXUM in the countries of our subsidiaries. He also follows up the monthly certificates issued by all SAXUM project managers in our different subsidiaries.


Chris Hayman

General Manager North America - USA

Extensive experience and technical knowledge in Steel Plant Studies, Project Management, Start-ups and Commissioning. International assignments in the Iron & Steel and Minerals & Metals industries in North/South America, Australia, the Middle/Far East and Europe have led to extensive experience and technical knowledge in Steel Plant Studies, Project Management, Start-ups and Commissioning, BD, Technical Marketing, Operations, Consultancy, Due Diligence and Technologies Assessments across different industries, cultures, languages and regions.

With over thirty years experience, he has worked for Samsung C&T, WorleyParsons, Rio Tinto, Hatch, Danieli and Acindar in Chile, Brazil, Australia, USA, Italy and Argentina.


Jared Weston

Director of Sales and VP of Strategic Planning - Dallas, USA

Jared has a BS in Industrial and Manufacturing Engineering from Pennsylvania State University focused on Engineering Economics and over 17 years of experience in the cement and mining industries. Jared’s core competencies include developing and selling customized CapEx project solutions, leading interdisciplinary and international teams, and incorporating modern and sustainable technology into existing plants.


Federico Resende

VP Business Development – South America

Expertise in EPCM projects in mining, oíl, gas, and infrastructure. 18 years of experience in different countries, within Argentina, and in Brazil, Chile and Bolivia. Logistics Specialist, and responsible for coordinate Logistics activities onshore, off-shore, foreign trade, customs clearance management. Supply management, purchasing activations, administration of supplies expediting in 9 countries simultaneously, including management of subcontractors or associated services, transport coordination, administration of machinery, equipment, light and heavy fleet; as well as general services, camps and warehouses.


Daniel Dewald

Engineering Manager

Daniel is an Electromechanical Engineer graduated from the University of Buenos Aires. He has outstanding professionalism in the development and management of industrial projects. His excellent preparation in handling different languages allows him effective communication to work anywhere in the world.
Daniel is currently the Engineering Manager of SAXUM, supported by his extensive technical knowledge and soft skills, he is in charge of the team and the coordination and interaction between the different disciplines of Civil, Mechanical and Electrical Engineering.
He participates in numerous projects in Argentina, the United States, and Brazil, playing an essential role during his stay in Australia in the execution of these projects to ensure their quality and optimal development.

Perseverance, motivation and commitment are strategic for him, when it comes to sustaining the philosophy of continuous improvement in the company's processes.

coni - copia

Constanza Unzaga

Commercial Manager - PMP

Constanza is an Industrial Engineer from the National University of Tucuman, Argentina, she also has an M.Eng. Project Management degree obtained in Hochschule Biberach in Germany.

At SAXUM she is in charge of the Commercial & Business Development department. She is responsible for coordinating all the commercial actions carried out at SAXUM, including each SAXUM company in Argentina, Brazil and the USA. Also, she has extended experience working with multicultural, multidisciplinary and intercompany teams of professionals for engineering and construction management projects. Constanza has excellent communication skills and a strong leadership and team working profile.


Melanie Etse

Business Development – Australia

Melanie's background is focused on marketing, communication and business development. She is a Graphic Designer graduated from the University of Santo Tomas de Aquino, and has a Master's degree in Marketing and Communication from the University of Palermo, Buenos Aires.

At SAXUM, she is part of our Australian team, based in Perth and in charge of Business Development in this country. She is responsible for the build-up of Market Research and the growth of business in the Mining, Minerals Processing, and Cement and lime industries in the APAC region.


Rubén Tomassini

Senior Engineering & Project Manager

Extended experience and proven expertise in Managing, Planning, Programming and Controlling of Engineering designs for industrial facilities in all different phases, including feasibility, conceptual, basic, detailed engineering and request for information attendance during construction/erection phases. Deep knowledge of the complexities involved in the coordination of multidisciplinary teams for the development of engineering designs of industrial facilities. Expertise in implementing and following up quality control procedures for engineering designs. Strong orientation to procedures, codes, specifications, and design criteria, as well as cost-effective and value engineering solutions. Strong focus to contractual terms follow-up regarding engineering scopes, design criteria, specifications, schedule and quality.  Proven capabilities to develop and deliver Trade-Offs Analyses, Scoping studies, Pre-Feasibility and Feasibility Studies in Mining and Infrastructure Projects.


Francisco Martinuzzi

Project Manager & Senior Civil Engineer

Project Management Professional (PMP®) with a Master's degree in Geotechnics and Soil Mechanics. He has experience in Integration, Scope, Time, Cost and Quality management for a wide range of Engineering and Construction projects. Francisco has participated in national, regional and International Conferences, Workshops and Seminars as an attendant and author of different publications.
He has been involved in Mining, Manufacturing, Infrastructure and Energy projects as a manager, consultant and lead engineer for On shore and Off shore projects also acting as accountable for the Owner´s engineering, constructability assessment; Trade-Off studies and QA/QC roles.
Moreover, he acted in engineering planning for instrumentation and monitoring of
geotechnical structures developing value engineering and risk management.


Daniel Quiroga

Senior Mechanical Engineer

Daniel is a Mechanical Engineer graduated from the National Technological University of Buenos Aires. He has more than 25 years of experience in mining projects. He stands out for his extensive expertise in the engineering and construction of mineral processing plants in Argentina and the world.

At SAXUM he is part of the mechanical engineering team, assuming different roles such as Project Engineer, Senior Mechanical Engineer, Engineering Manager, and Construction & Commissioning Manager, praised for his impeccable professional career and great ability to adapt to new situations.


Facundo Zavaleta

Commercial Coordinator

Facundo is an industrial engineer, graduated from the National University of Tucumán, with an excellent command of the English language. Throughout his professional career, he developed his negotiation and adaptation skills to achieve great commercial achievements.

At SAXUM, Facundo is the manager of the commercial area, praised for his great capacity for analysis and strategic vision of the business.
His charisma and technical knowledge catapulted him to develop his potential to the maximum, providing quality and prestige in each objective proposed by SAXUM.


David Magee

Project Engineer - Australia

David has a Chemical Engineering background, graduating from Curtin University in Western Australia with over 10 years of experience in the mineral processing industry, in both design and operations across numerous different commodities. He is part of the business development team in Australia, based in Perth. He brings additional commercial expertise to his role and is focused on the development and execution of SAXUM projects in Australia.


Esteban Lescano

Senior Mechanical Engineer

Esteban is a prominent SR Mechanical Engineer. with more than 20 years of professional experience. He began his experience in one of the main industries in our region and continued for more than 15 years, working for mining and cement industries in different countries around the world.

At SAXUM he established himself as a leading project engineer with solid knowledge of Piping, responsible for the integral mechanical engineering of the company's most outstanding projects.
His charisma, loyalty and solid knowledge confirmed him as the leader of the mechanical area.


Ariel Irazusta

Senior Civil/Structural Engineer

He is a certified Civil Engineer with a degree from the National University of Tucumán, Argentina. He has extensive experience in the design and calculation of buildings and industrial structures, both concrete and steel.

At SAXUM he is part of the outstanding team of civil engineers, with more than 10 years of experience in the area. His responsibilities cover different tasks such as guiding and coordinating resources for the effective development of projects. His great ability to analyze proposals, prepare material estimates (BoQ), estimate required deliverables and his strategic vision to quickly resolve the challenges presented to him stand out.


Gustavo Zurita

BIM Manager

Bim Manager professional training. Solid experience in BIM Regulations. More than 5 years of experience in cement and mining projects. Extensive experience in the development, management and coordination of TEKLA, Revit, Cad and Civil 3D models and drawings in collaborative environments. Calculation of amounts of steel and reinforcement. Design of roads and soil movement.


Andres Eyerarbide

Senior Process/Mechanical Engineer

Andres graduated from the University of Buenos Aires as a Mechanical Engineer. He has more than 12 years of work experience in technologies for the cement industry. His time in Germany consolidated him as a Sr. Consultant in main projects in Argentina and the world.
Andres at SAXUM proved to be a Detail Engineering Specialist for an alternative pump for concrete, a study of the performance of a hydrogenerator and a frac sand management system to work with wet material.
His great leadership capacity allowed him to stand out in the different projects that he developed from the conceptual stage to completion, including cost and time calculations, basic and detailed engineering, and procurement. He is tenacious and persevering in his daily actions.


Marcelo Sosa

Contract Manager

Marcelo graduated as a Metallurgical Engineer from the Catholic University of Cordoba. He completed a Master's in Business Administration at the International Business School of Latin America.
He is a professional specialized in the Administration and Management of Contracts, Subcontracts, Claims and Work Certification. He stands out for his experience in the participation of very important Oil & Gas, Mining, Power Plant projects, integrating work teams in International companies of Construction in Senior positions.

Marcelo at SAXUM works as a Contract Manager on-site, effectively and efficiently developing his tasks. He seeks to satisfy the needs of our clients with his communication skills and his great negotiation skills.


Leonardo Costilla

Senior Civil/Structural Technical & Site Supervisor

More than 15 years of experience in cement and mining projects. Extensive experience in the development of TEKLA models & drawings, CAD drawings, quantities calculation of steel and reinforcement, pre-design and design of steel and concrete structures.


Mauricio Pintos

Project Manager - Dallas, USA

Mauricio is a Civil/Structural Engineer graduated from the University of Chicago. He is a Master's degree certified by the University of Arkansas. He has over 25 years of construction, engineering, project management and commissioning experience with EPCI in the US. He is noted for leading projects that include engineering design, engineering investigations, forensic engineering, construction, operations, and maintenance.

He is a certified PMP and fully versed in the set of knowledge areas of project management (Initiation, Planning, Execution, Monitoring and Control, Closing).

At SAXUM, he is part of the select PM team characterized by his strategic vision and teamwork, focusing from the general to the particular aspects of daily work and the organization of each project, its start-up and programming.


Erica Gisler

Electromechanical Engineer

Erica is an Electromechanical Engineer graduated from the National University of the Center of the Province of Buenos Aires (UNICEN). She has a solid domain in the use of software for the development of detailed engineering, covering the creation of single-line, functional, topographical plans, and electrical calculations. In addition, she has experience in managing quality certifications in accordance with ISO Standards (TRINORMS).

At SAXUM, Erica stands out for her wealth of experience in designing and manufacturing cabinets for a variety of types of low-voltage electrical panelboards, as well as medium-voltage power distribution panelboards. Her tremendous ability to adapt to new situations and her communication skills strengthen her integral profile as a professional and teammate.


Francisco Cerviño

Civil/Structural Engineer

Francisco is a civil engineer graduated from the National University of Tucumán. Certified as Project Manager by the National University of Buenos Aires, he completed a Master's Degree in Structural Engineering at his first house of higher studies in Tucumán, the National University.He highlights his expertise in the development of engineering for cement plants and in calculations of concrete and steel structures.

At SAXUM, he works as a Site Supervisor, gaining great experience in his time in other countries such as the US and Australia, assisting the technical offices in different cement plants around the world. His empathy, cordiality and his knowledge enhance him as a person and professional.


Eugenia Espeche

Civil/Structural Engineer

Eugenia graduated as a civil engineer with an outstanding average at the National University of Tucumán. She has experience in the design and calculation of structures that are part of mining and cement projects. She has an excellent command of numerical methods and tools.

She stands out for her knowledge of the evaluation of the stability and stress state of structures, design and sizing of structural elements applying national and international regulatory guidelines. At SAXUM, Eugenia shines through her talent in her unique approach to design and engineering.


Andrés Danert

Civil Engineer

Andrés is a Civil Engineer graduated from the National Technological University Regional Faculty of Tucumán Argentina. Throughout his career he acquired extensive experience in cement and mining projects, review of national and international standards in preliminary plans and construction plans.

At SAXUM he is part of the outstanding team of civil engineers, developing technical assistance in civil and mechanical works and on-site assistance in building projects. Due to his great expertise, responsibility and commitment, he worked with multidisciplinary professional teams and led cement and mining plant projects for prominent clients around the world.


Leandro Montagna

Civil/Structural Engineer

Leandro is a civil engineer graduated from the Argentine National Technological University. He completed a Master's degree in Structural Engineering at the University of Texas in the USA.
He developed basic and detailed engineering of metal structures in the industrial sector, mainly in cement and mining.
He excels when it comes to quality, overseeing the development of plans and project documents. Continuous monitoring of progress in BIM modelling. He likes to do research to collaborate in the development of design tools.

At SAXUM Leandro is part of the team of civil engineers, he works collaboratively as a team, meeting the proposed objectives and goals.
His empathy and communication skills allow him to easily interact with clients and peers to provide quick and effective advice to our clients.


Barbara Schilman

Civil Engineer

Barbara is a civil engineer certified by the National University of Tucumán. Her concern for the planning, organization and monitoring of her projects led her to specialize as a Project Manager in Mallorca, Spain.

At SAXUM, she works as a Project Control Analyst, analyzing their monitoring, budget and feasibility. She stands out for her pressure and punctuality when it comes to determining schedules, procedures and specified standards for each project, managing real variables to effectively and efficiently satisfy our clients.


Juan Minich

Civil/Structural Engineer

Juan graduated in Civil Engineering from the Technological University of Bahía Blanca. He is certified as a Project Manager at the University of Buenos Aires. He has more than 25 years of project engineering experience. Works Management.
He stands out for his expertise in structural calculation for large industries such as mining and cement, calculation memory, and the use of national and international standards for engineering development anywhere in the world.

At SAXUM, he is part of the team of outstanding civil engineers, his excellent communication skills and his outstanding quality of teamwork favour interdisciplinary exchange with the Mechanical Engineering and Electrical Engineering departments.


Florencia Garcia Perez

Industrial Engineer

Florencia is an Industrial Engineer graduated from the National University of Tucumán. She specialized in the area of coordination and planning of engineering projects. She developed knowledge in work certification, ICAPS analysis, and application of PMI methodology. Calculation of costs using the procedure of the SAP manual.

At SAXUM, she works as a Project Control Analyst, she stands out for her great ability to monitor and control the engineering, purchasing management and production areas. Her analytical skills, attention to detail, and sense of urgency reveal her effectiveness and talent when it comes to solving our clients' needs.


André Vieira

Civil Engineer - Brazil

He graduated as a Civil Engineer from the Federal University of Minas Gerais UFMG in Brazil, specialized through a postgraduate degree in Construction Management from Columbia University, and has extensive experience in implementation, geometric and earthworks infrastructure projects.

At SAXUM André is part of the civil engineering team, in the Brazil office. He stands out for his knowledge in BIM project development, project management, team management, budgeting and physical-financial planning of works, field supervision and soil testing. His ability to relate, organize and coordinate effectively allows him optimal teamwork.


Carolina Ramallo

Contracts Manager

Carolina is a corporate lawyer, graduated from the National University of Tucumán -Argentina and completed various postgraduate studies such as a Postgraduate in CyCN Update, a Postgraduate in Insurance and a Postgraduate in Engineering and Construction Contract Administration, where she obtained first place award for his performance and a position as an academic assistant. She has 15 years of experience as an in-house attorney. She has participated in industrial, real estate and mining plant projects, especially in the negotiation and drafting of construction and engineering contracts.

At SAXUM Carolina participates in bidding processes and carries out legal monitoring of all projects in execution until their completion.
In particular, Carolina assists projects in everything related to the contractual management of services related to different projects, Advice on negotiations and procedures on all aspects related to contractual management that are required, Assistance in contracting procedures, Preparation of service updates and progress reports, Contractual risk audit, Control and monitoring of contractual requirements, Document management of contracting, Monitoring and contracting.


Marcos Salvatierra

IT Manager

Information System Engineer with more than 30 years of experience in the IT sector. Focused on opensource technologies, telecommunications, operating systems, infrastructure services, data centres, networks, systems auditing, information security and distance education solutions. Focused on providing services committed to defending the interests of the client, leading teams of high technical value and professional ethics. Specialized in the development of technological projects for demanding clients, from design to implementation, with extensive professional experience leading teams and projects.

Silvia Romero

HR Coordinator

Maria Silvia is a psychologist from the National University of Tucumán. She specialized in labor and organizational psychology. She has more than 15 years of experience in HR soft management. Development of personnel search and selection processes. Extensive knowledge in diagnosis and organizational well-being.

At SAXUM, she is responsible for managing the HR policies and procedures aimed at supporting the organization to maintain a healthy and productive employment relationship. She highlights her effective communication, her empathy and cordiality to maintain permanent contact with collaborators.


Isabel Antón

Executive Assistant

Isabel is in charge of the Assistance to the CEO and general support to Administrative and HR areas in the company. She has over 30 years’ experience in translation in different areas. Developed skills. Proactive and challenge-driven. Outstanding problem-solving capacity.

Rocio Lobo

IT Assistant

System Analyst. Certified in routing networks and commuting CISCO CCNA 1, 2, 3 and 4. Specialist in IT networks LAN and WAN. Great expertise in technology and information systems. Communication skills to provide immediate assistance to users keeping high standard level of service.