Firm Profile > ECIJA Castillo & Fiallos > Managua, Nicaragua

ECIJA Castillo & Fiallos

Nicaragua > Corporate and finance Tier 3

Connected to an extensive global network, the 'highly qualified' corporate and finance department at ECIJA Castillo & Fiallos provides a full service to regional and international corporations and financial institutions, which includes advising on project finance, debt restructuring, due diligence, M&A, corporate governance, commercial contracting and regulatory compliance. The team is led by banking law authority Edmundo Castillo and corporate law and commercial arbitration expert María Antonieta Fiallos, who is also a founding member of Grupo Pro Reformas Electorales, which seeks to strengthen Nicaragua’s electoral system. The group’s client roster contains household names, among them DHL Express and Pfizer, and spans the finance, courier services, banking, nutrition and pharmaceuticals sectors.

Practice head(s):

Edmundo Castillo; María Antonieta Fiallos


‘Highly qualified lawyers with a focus on client service.’

‘We have worked with Edmundo Castillo and María Antonieta Fiallos. They have a lot of knowledge and experience and provide advice that is very precise and backed up by the law.’

‘First, they are attorneys with unquestionable integrity. Second, Edmundo Castillo offers great support to us in terms of knowing the fundamental issues and principles behind specific laws. Third, they have a great commitment to the interests of the country in general, as they have shown in their commitment to working with non-governmental organisations.’

‘The team’s strengths include broad expertise and knowledge of local regulations for the industry in which we operate, and fluid communication and good case management.’

‘They are highly qualified professionals with extensive experience. They stand out for their good communication, availability and efficiency in advising us.’

‘ECIJA’s ability to follow up on cases and act with a sense of urgency, and the quality of its legal work, is impressive and unmatched. So far it has been the best law firm I have worked with, both in terms of legal output and customer service.’

‘The advice is clear and assertive. They meet our deadlines and are transparent in their dealings. In addition, the regional reach of their services is very convenient for multinationals and their scheme of having a single point of contact is a big plus, giving in-house lawyers peace of mind.’

‘María Antonieta Fiallos has provided us with an excellent service over many years. She handles corporate matters very well and always provides us with fast and clear advice. We have a relationship of trust and our communication is very effective.’

Key clients


DHL Express

DHL Global Forwarding

Inter-American Development Bank

Central American Bank of the Economic Integration


Sistemas Aplicativos de Nicaragua (SISAP)




Banco Ficohsa

Banco de Finanzas

Bavaria Delikatessen

Central America > Corporate and finance

Spanish firm ECIJA expanded into several jurisdictions in Central America and the Caribbean in 2018 through a merger with regional firm Expertis Legal - and has since merged with local firms to launch offices in Panama and Guatemala. The firm is particularly strong for corporate work, with experience in the establishment of new companies, M&A and corporate restructurings, acting for a range of regional and international clients. Guillermo E Zúniga is the key name for corporate matters in Costa Rica. In Nicaragua, Edmundo Castillo and María Antonieta Fiallos handle corporate and finance matters, while in El Salvador, Alfredo Navas and Carlos Gil lead the growing banking and finance practice. Rosalinda Cruz Sequeira is the key contact in Honduras, and Armando Cordoba and Daniel Shamah handle corporate matters in Panama.

The firm: ECIJA is a European law firm with headquarters in Spain and offices in Portugal, Chile, Ecuador, Colombia, Brazil, Mexico, Puerto Rico, Panama, Costa Rica, Nicaragua, Honduras, Dominican Republic, Guatemala and El Salvador. ECIJA has a multidisciplinary team of over 800 professionals, with exceptional experience in their areas of specialization, enabled to work in different jurisdictions, with extensive knowledge of the different industries and international markets. ECIJA is a client-focused law firm with the agility and personal service of a high-end boutique firm and the multidisciplinary experience of a large firm. ECIJA is a full-service firm with significant experience and specialized in the practice areas required by international clients to invest and operate globally.

ECIJA international capacity is outstanding, the firm offers an integrated cross-border advice. Since 2019, ECIJA has merged with 16 law firms and has become the largest Spanish law firm in Latin America. Nowadays, ECIJA has 29 offices in 16 countries. Furthermore, in 2019 ECIJA signed the biggest strategic agreement between a Spanish and the 4th largest firm in China (Grandall Law). The agreement brought together 3,500 lawyers and 54 offices in Iberia, Latin America and Asia. “To put that in perspective, that is comparable with CMS and Norton Rose Fulbright, some of the biggest firms in the world by headcount.”

Main areas of practice
Corporate: the firm provides corporate and M&A services for both local and international clients. The practice in M&A is multi-jurisdictional, focused on transactions with a regional component in Latin American markets. The team is trained in legal project management tools in order to control time and cost of any transaction.

Banking and finance: the team includes prestigious attorneys who have assisted important international and local banks with sophisticated transactions. The firm’s services involve many aspects of the complex regulatory financial world, including syndicated credit facilities, project finance and banking products such as leasing, factoring, confirming, mortgages, pledges and credit cards.

Dispute resolution: ECIJA has a strong practice for dispute resolution both in local courts and arbitration. The disputes include commercial, civil, investment and government. Regarding arbitration, the firm has a regional practice of several partners with strong experience and skills in international arbitration using the ICC, AAA and UNCITRAL rules, and also with local rules in each country.

Technology and data privacy: ECIJA in one of the leading firms in the LatAm for technology and data privacy practices. The team focuses on technology industry for complex transactions, M&A and software developments.

Employment and human rights: the firm has a strong practice in employment matters from the employer perspective. The services include litigation, technology issues relating to the employment, company’s restructuring, immigration and compliance. ECIJA’s practice in human rights is focused on compliance with international standards in five areas: gender, age, functional diversity, social origin, and diversity of sexual orientation and gender identity.

Administrative and infrastructure: the services provided by ECIJA range from managing regulatory aspects of the relationship from the regulatory point of view between the client and the government throughout the execution of agreements with public entities.

Energy: ECIJA is one of the most recognized and acknowledged law firms in the structuring and development of energy projects in the Central American region because of its vast experience in the field. The services include regulatory aspects relating to obtaining licenses and authorizations, as well as the contractual aspects of negotiating agreements for electricity purchase with distribution companies. The relevant experience and knowledge of energy project developments also covers construction and financing agreements.

Trusts: the firm has advised regional and foreign clients in connection with the incorporation of trust companies, the opening of internal trust departments and the design of business transactions which employ trust structures, including philanthropic, administration, guaranty, and real estate development trusts. Likewise, ECIJA has advised local banks in connection with the implementation of trust operations that include financing structures.

Competition/merger control: ECIJA advises large US, European and Latin American corporations in antitrust and merger control investigations at national and cross-border level. Clients come from a several sectors, having strong expertise in regulated industries such as telecoms and ICTs.

Foreign investment: ECIJA has a regional legal team that is prepared to advise foreign investors on how to structure their investment in any country of the region, including aspects such as obtaining the benefits of various tax incentive regimes and dealing with customs issues that come up when importing or exporting goods and services.

Real estate: ECIJA is a well-known player in the real estate market in Latin America.  The team has developed special capacities in the development of multi-purpose projects, including housing, commercial, offices and leisure spaces.  ECIJA provides its services to developers of projects up to individual investors willing to have a second home or retirement place.  ECIJA advises the developers from the acquisition of the land through the permit process until a final product is delivered to the customers, acting as a business partner of its clients with the tools of legal project management.  The practice is fulfilled with the experience of the partners in the construction industry.

Tax: ECIJA is a team of strongly committed professionals reputed to thoroughly address their clients’ needs involving taxation.  ECIJA provides insightful advice on local and international tax issues pertaining to business endeavors and personal concerns.  In addition, they are effective litigators and have obtained significant awards on tax claims and suits, on behalf of their clients.

ECIJA’s tax law practice focuses in two main areas: legal advice and litigation, for both national and municipal taxes.  ECIJA’s legal advice area ​provide specialized advisory services, tax contingencies analysis and tax planning.  The litigation area ​handles tax claims in the administrative venue and judiciary processes.  International taxation queries ​are also prevalent.  The current international investment surge has triggered an array of tax advisory services in connection with international tax issues.

Energy/oil and gas: ECIJA is one of the most recognized and acknowledged law firms in the structuring and development of energy and oil and gas projects in the Central American, Caribbean and in Ecuador. ECIJA has participated in the development and execution of the main projects in the energy and oil and gas sector in the region: Coca Codo Sinclair 1500 MW of electricity generation with the company Sinohydro. The services include regulatory aspects related to obtaining licenses and authorisations, as well as the contractual aspects of negotiating agreements for electricity purchase with distribution companies.

International transportation and logistics: In Central America and the Caribbean, ECIJA advises main providers of international courier, parcel delivery and express mail, as well as logistics and international transport services, being their strategic allies in their day-to-day legal matters.

Pharmaceutical: The ECIJA team has extensive experience in the pharmaceutical legal framework. We assist world-renowned pharmaceutical companies in Latin America and Europe. With our specialized knowledge regarding the legal frameworks that regulate the pharmaceutical business in our countries, we are contributing to the adequate and correct manufacture, export, import and distribution of pharmaceutical products that are so essential in these times of pandemic.

Department Name Email Telephone
Managing Partner | Banking, Corporate/M&A, Dispute Resolution, IP, Notarial Law Edmundo Castillo T. +505 2265 0293
Partner | Banking, Tax, Corporate/M&A, Real Estate, Dispute Resolution and Notarial Law María Antonieta Fiallos T. +505 2265 0293
Photo Name Position Profile
 Edmundo Castillo photo Edmundo Castillo Managing Partner ECIJA Nicaragua
 María Antonieta Fiallos  photo María Antonieta Fiallos Partner Banking, Tax, Corporate/M&A, Real Estate, Dispute Resolution and Notarial Law at ECIJA…