We are a group of entrepreneurs focused on innovation and disruptive ideas. Therefore, we created a startups laboratory, Siriguela Ventures, to develop solutions that change the way people deal with countless everyday situations.

We validate ideas and test the market through the methodologies acquired in studies in the Executive Education programs of GSB Stanford and Babson College. It is not by chance that we operate in several segments, such as Fintech, Lawtech, Health Tech and SaaS.

Still, we are not limited to them. We are always open to innovative ideas that make a difference in the market.


Andre Cavalanti - CEO

Andre Cavalanti - CEO


Bachelor in Business Administration by Universidade Mackenzie – Sao Paulo, SP – Brazil. Managed and Directed for 6 years the operation of one of the biggest trading companies in Brazil.

Self-made entrepreneur with experience in growing new businesses from idea, prototyping, validation, following Stanford Embark Frameworks throughout the entire venture journey from startup to a real and fully operating enterprise.

With Siriguela, his role is to manage and lead the team on creation, planning, implementation and integration of each venture strategy.

Elaine Crisvalle - Head de Recursos Humanos

Elaine Crisvalle - Head de Human Resources


Psychologist, coach, specialist in People Management and MBA in Strategic and Economic Business Management by FGV-SP. Expertise in strategic management of processes linked to the Human Resources area, consolidated organizational structures and restructuring for M&A.

She worked as an executive in human resources in national and multinational companies, managing projects of transformative relevance for the business, in addition to implementing projects of corporate governance management, coaching, cultural transformation with practices of Lean Service and Customer Centricy and Change Management in digital transformation.

João Pedro Oliveira - Coordenador de Marketing

João Pedro Oliveira - Marketing Coordinator


João Pedro has been working with Communication and Marketing for over 5 years. Graduated in Public Relations and post-graduated in People Management and Market Intelligence, he has worked in large companies leading projects in Digital Marketing, Data Analysis, Institutional Communication and Branding. The 5 years of experience in the area acting in several segments directed him to work in the field of consultancies and lectures, where he has been sailing for 3 years.

In addition, he has certifications in Google Adwords and Analytics, mastered techniques such as SEO, SEM, A/B Tests, Metrics, KPIs and Inbound.

With Siriguela, his mission is to lead the area’s strategy and ensure that companies’ marketing communications promote the right message and achieve the goal of strategic planning.

Rafaella Ramenzoni - PO Health Protection

Rafaella Ramenzoni - Health Protection PO


Nutritionist graduated from Universidade Presbiteriana Mackenzie (SP) 2019, Specialization as Health Coach from the Institute of Integrative Nutrition (NY) 2018, Specialization in Eating Disorders from AMBULIM (Institute of Psychiatry of Hospital das Clínicas – FMUSP).

Experience in Clinical Nutrition in hospitals and clinics, Public Health by the Brazilian Institute of Nutritional Education. Today she continues her career as a consultant specialized in nutraceuticals and supplements. Role at HP today is to manage the technical content and operation of the project.

Yanca Palumo - Analista de Marketing

Yanca Palumo - Marketing Analyst


Graduated in Journalism and post-graduated in Communication, Culture and Media studies at USP, she has experience in several areas of Marketing such as Customer Success, Project Management, Interface with agencies, SEO, SEM, Content Production and Copywriting.

At Siriguela, its mission is to adapt communication to its most diverse audiences, through the production of content, ensuring compliance with the strategic planning of Communication and Marketing.

Caroline Fonseca - PO ProcesseAqui

Caroline Fonseca - ProcesseAqui PO


Bachelor of Laws from Universidade São Judas Tadeu, has experience in the area of Civil and Tax Litigation, having participated in the development of networks aimed at the formation of new jurisprudential understandings in civil law. It has already represented companies in bankruptcy and judicial reorganization processes, as well as in consultation operations and general opinions. During his visit to the Official Press of the State of São Paulo, he had contact with negotiation of terms of commitment and conduct adjustment (TACs), as well as transactions with the State Audit Court.

Jonatas William - Desenvolvedor

Jonatas William - Developer


Technologist in IT and Automation, Jonatas William has more than 5 years of experience in web development acting as Fullstack. With background in Automation, game development and a hint of 3d animation, he manages to generate creative solutions in the projects in which he operates.

Board Members

Marcello Rachlyn - Fundador e Mentor

Marcello Rachlyn - Mentor / Founder


Marcello S Rachlyn – Bachelor of Electronic Engineering by PUC/RJ, specialist in high-growth businesses by Babson College – Boston, USA. Stanford GSB Executive Education Ignite, Business Strategy and AIP alumni.

Natural-born entrepreneur, founded his first company in 1996. Currently holds the position of CEO for his most successful entrepreneurship, a forensic laboratory with an innovative approach for drug tests that has become the largest one in Brazil.

With Siriguela, his mission is to assist our ventures to overcome barriers, set goals, develop contacts, raise resources and build their strategies.

Rubens Proença - Advogado

Rubens Proença - Lawyer


Graduated in 2005 in Law from Faculdade de Direito da Universidade de São Paulo (USP), Master in Law (LLM) by Universidade Catolica Portuguesa and International Tax by Leiden University, Holland. Expert in Practical Aspects of International Tax Planning acknowledged by the International Bureau of Fiscal Documentation (IBFD). Professionally was partner at Motta Fernandes Rocha Advogados and is currently partner at Cantidiano Advogados.

At Siriguela, acts primarily with corporate law, M&A, contracts, foreign investments and tax law.

Sérgio Póvoa - Mentor de Recursos Humanos

Sérgio Póvoa - Human Resources Mentor


Graduated in Business Administration from UGF, Master in Business Administration by FGV and Executive Education degree by Fundação Dom Cabral.

With over 25 years of experience in HR, he is a specialist in Talent Acquisition, Talent Management, Culture and Employee Engagement Strategies for startups. Has developed projects in big companies such as Unilever, General Electric, Johnson Wax and Souza Cruz. He is current position is CRHO at OLX.

With Siriguela, his mission is to develop the best practices to Talent Acquisition and operations, workforce planning and optimization.