About OSA
Always acting with Professional Ethics, Rigour, Discipline and Technological Innovation.
Ethics
We conduct our work with integrity, transparency and a strong sense of professional responsibility.
Justice
We defend our clients’ interests with commitment, independence and respect for the principles of the rule of law.
Innovation
We pursue modern and strategic legal solutions, keeping pace with technological developments and the evolving demands of the business environment.
Client Focus, Integrity and Excellence
Who We Are.
Oliveira Sitoe Advogados (OSA) is a law firm founded on 11 December 2025 by its founding partner, Oliveira Sitoe. Its mission is to provide legal services of excellence by combining technical rigour, innovation and a strategic approach to the challenges of the domestic and international markets.
Against a backdrop of accelerating digital transformation, growth in the extractive sector and expansion of Mozambique’s real estate industry, OSA is positioned to address new legal dynamics. We advise domestic and international clients in emerging and highly complex areas, including Energy Law, Foreign Investment, Fintech, Cross-border Transactions, Critical Minerals, Arbitration and Technology.
At the same time, OSA maintains a strong practice in traditional areas of law, including Commercial and Corporate Law, Labour Law, Immigration Law, Public Law, Licensing, Tax Law and Banking Law, offering integrated legal solutions throughout the full business lifecycle of its clients.
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Find quick answers about our services, practice areas and how we work with clients.
OSA Lawyers provides integrated legal advice in Banking, FinTech & Tax Law; Commercial and Labour Arbitration; Technology and Data Protection; Commercial and Corporate Law; Energy and Natural Resources; Immigration and Labour Law; and Real Estate.
You may contact us through the website form, by phone or by email. After a preliminary review of your needs, our team will schedule a meeting and propose the most appropriate legal approach.
Yes. We advise domestic and international clients on investments in Mozambique, cross-border transactions, immigration matters, licensing and regulatory frameworks, combining local knowledge with a global legal perspective.
Yes. We help clients identify and mitigate legal risks, review contracts, strengthen corporate governance, meet regulatory requirements and implement internal procedures suited to their activities.
All matters are handled with rigour, discretion and respect for professional confidentiality. We communicate clearly and regularly, sharing key developments and the next steps in each matter.