Who We Are
Vision
Assis e Siqueira is a law firm specializing in Public Law, providing legal services through attorneys with significant technical expertise and solid training in Bidding, Procurement, and Public Contracts, Public Servants' Careers, and Public Accounting.
Law must be objective and understandable, and Bidding Consultancy should meet the clients needs.
We are a digital law firm that, with flexibility and fluidity, moves to the client, reducing costs and focusing on what truly matters: positive outcomes and skilled attorneys in bidding processes!
Our team is based in Porto Alegre (RS), São Paulo (SP), Rio de Janeiro (RJ), Natal (RN), and Fortaleza (CE), so we operate throughout Brazil through partners, remaining close to clients daily.

Mission
To transform our relationship with public law, in bidding and contracts, with our wisdom and integrity, creating something close and innovative for companies, with the necessary security and ethics in such a challenging market.
Values
Our practice is guided by a deep commitment to integrity, excellence, responsibility, and empathy. We cultivate an environment where honesty, transparency, and fairness are fundamental, ensuring that every action reflects our unwavering ethical commitments.
Purpose
We believe that success lies in our ability to go beyond, exceed expectations, and deliver tangible results for our clients. We are committed to defending their interests with integrity, diligence, and passion, ensuring a clear path toward legal success and positive outcomes.
Founding Partners

Graduated in Law from UniRitter, specializing in Public Law, with a postgraduate degree in State Law, currently studying Public Management and pursuing a Master's in Human Rights.
She is a professor in the Law Course at nima Education Group. With experience in Public Administration, she worked in the Legal Advisory Department of the RS Health Department and was the Head of the Legal Department of the RS Tourism Department. Throughout her career, she has provided consultancy to over 400 Brazilian municipalities and teaches training courses for public servants on Public Law topics.
She has extensive experience in Administrative Law in the areas of Bidding, Contracts, and public assets, as well as public servant careers; and works in Criminal Law cases related to these matters.

Graduated from PUCRS - Pontifical Catholic University of Rio Grande do Sul, specializing in Labor Law and Labor Procedural Law. She holds a postgraduate degree in State Law from UFRGS and is currently pursuing a postgraduate degree in Administrative Law and Public Management from FMP.
She is a Compliance Officer specializing in Labor Law, trained by the Foundation School of Magistrates of the State of Rio Grande do Sul (FEMARGS/RS), with experience in both internal and external regulation.
Among her professional experiences, she has worked in Public Law in the areas of Contracts and Public Collections, as well as a Bidding Analyst, providing legal support to companies and law firms. Her training was conducted by Vianna Consultores.
Clients
Get to know some of our clients who rely on our strategic advisory and consultancy services to handle public procurement, public contracts, and public defaults issues.
Contact Us

Mariana Glória de Assis
Lawyer - OAB/RS nº 79.079
Phone Number 51 99982.2817
Email: mariana@assisesiqueira.adv.br
Monique Siqueira da Silva
Lawyer - OAB/RS 119.441
Phone Number 51 99899.8289
Email: monique@assisesiqueira.adv.br


















