Hi,
my name is Reinier and this is my CV.

About Me

I discovered programming when I was 13 years old and since then it's my hobby, I started programming with pencil and paper because I didn't have a PC. According to my experience, you cannot be a fan of any technology. The technology is used to solve problems, when there is a problem, it is analyzed and it is determined which tool and language are better for solving it. I completed a licentiate in Computer Science to obtain a university degree, but my main characteristic is to be self-taught. I have taken courses of Mysql, PostgreSQL, PHP, Java, C#, Linq, Delphi, ect...

I know, apart from other languages ​​of little diffusion outside academic environments: C, C++, C#, Java, Go and Object Pascal. I also know scripting languages: VBS, JavaScript, PHP and Python among others. I know XML/DTD/XLST and its management through DOM and SAX, and technologies based on HTTP: REST APIs, XML, JSON, SOAP, WSDL, Ajax, GraphQL etc.

I have made the migration of libraries between different operating systems and languages. I have developed C libraries for PHP, Python and Java languages.

I love the creation of Parsers, DSLs, Code Editors and other tools that improve productivity. All the tasks that can be automated, I automate them. I am an enthusiast of Software engineering, UML, Design patterns, Designs principles, Software Architectures and techniques that facilitate the rapid development of applications in a software factory.

As for DBMS, apart from the BDE(DBASE, Paradox) and other non-relational databases. I know database theory, the SQL standards and I am familiar with dialects (PL/SQL, Mysql, Sqlite, Derby, H2), MS-SQL Server (Transact SQL) and some of Interbase (ISQL). As access methods I know the BDE, ODBC, ADO/OLEDB, DBExpress, JBDC, Hibernate, JPA, Doctrine, ADO.NET, Entity Framework and native access to client interfaces, and their different combinations, in one or more layers(via TCP/IP, COM/DCOM, SOAP etc.). And the already famous NoSql like MongoDb and Redis.

I have used several UNIX systems(Mac OS, FreeBsd, OpenBSD, NetBsd, Minix). I know Linux and Windows more deeply , whose APIs(general, Sockets, ISAPI, GDI, WININET, including COM and ActiveX technology, etc.) I know quite well.

As DevOps I have worked on the design, implementation and maintenance of highly scalable and available IT infrastructures. In the automation of development, testing and deployment processes, as well as in the management and monitoring of systems in high availability environments. I have worked with tools like Git, Gitlab, Jenkins, SonarQube, Nexus ,Vagrant, Ansible, Kubernetes and Puppet. I have experience in the administration and maintenance of Linux and Windows servers. And programming languages like Bash to automate processes.

One of the branches in which I have specialized is network administration, I know most of the Internet technologies: UDP, TCP/IP, HTTP with extensions in both server(CGI, ISAPI, Apache modules, ASP, PHP, WSGI) as in the client, and of course the rest of Internet protocols: DNS, DHCP, SMTP, POP3, SSH, LDAP, Kerberos among others. As well as the assembly and configuration of network services, Firewalls, Clusters and the Virtualization of servers and services with OpenVZ, LXC, KVM and Docker. With all services integrated and communication channels encrypted, using strong authentication mechanisms and implementing SSO(Single Sign On). Having an important impact on increasing productivity, the time and frustrations of the user, associated with access to different applications with different users and passwords are eliminated.

I have worked with tools that allow an integral evaluation of the weaknesses of the computer systems. Allowing demonstrate the functional risks of the detected vulnerabilities, prevent them and minimize damage. As well hacking and reverse engineering techniques for disassembly, analysis and protection of applications.

With regard to the rise of AI, Machine learning and Deep learning. At the moment I am a user of the main libraries that exist. But it is an exciting field in which I want to continue to deepen. I love learn new technologies and programing languages.

Professional experience

• 2005

  IPI Mayor Gral. Calixto García Iñiguez

  Position:Computer lab technician.

  • Install and give technical support to the equipment of the computer laboratories.
  • Professor assistant
  • Student mentor

   
• 2006

  IPI Mayor Gral. Calixto García Iñiguez

  Position: Administrator of computer networks.

  Network administrators maintain the network hardware and software. This includes the deployment, maintenance and monitoring of network: switches, routers, firewalls, etc. The administration activities of a network generally include address assignment, routing protocol assignment and configuration of routing tables as well as authentication configuration, authorization of services and the development of tools that facilitate the easy administration of servers.

• 2007

  ISP Jose de la Luz y Caballero.

  Position: Administrator of computer networks.

• 2009

  UCI Holguín Software Development Center.

  Position: Senior Software Developer, Network Administrator, SRE/Devops

  • Design and Develop Software Architectures.
  • Deploy applications.
  • Research and apply new technologies.

   
• 2012

  Desoft

  Position: Senior Software Developer, Network Administrator, SRE/Devops

  • Design and Development applications applying Software Architectures, Principles and Design patterns.
  • Deploy applications.
  • Research and apply new technologies.

   
• 2015

  JJMM Business Group (Managua, Nicaragua)

  Position: Senior Software Developer, Network Administrator, SRE/Devops

  • Design and Development applications applying Software Architectures, Principles and Design patterns.
  • Deploy applications.
  • Research and apply new technologies.

   
• 2016

  Freelance

  Position: Senior Software Developer, Network Administrator, SRE/Devops

  • Install and configure network servers
  • Maintain legacy systems and add new features.
  • Design and Development applications applying Software Architectures, Principles and Design patterns.
  • Deploy applications.
  • Research and apply new technologies.

   

ACADEMIC TRAINING

TECHNICAL SKILLS

PROGRAMMING LANGUAGES

Operating Systems

LANGUAGES

Hobbies

Frameworks, Libraries and components