Publication
Tips to Attract, Manage, and Retain Software Developers
https://www.toptal.com/developers/software/attract-retain-software-developers
Fernando is currently unavailable
Fernando Martinez
Verified Expert in Engineering
Software Developer
Bogotá - Bogota, Colombia
Toptal member since May 25, 2017
Bio
Fernando is a systems and computing engineer who graduated from the University of Los Andes in 1987 and has worked in software development ever since. He started developing in C on UNIX operating system with ORACLE SQL database. Fernando has kept his skills up-to-date and has developed in Java, C#, SQL Server, and more.
Portfolio
Independent Consultant
Delphi, MySQL, SQLite, Microsoft SQL Server, Visual Studio, C#, Eclipse...
Primestone S.A.
ADO.NET, Visio, Reflection, C#, .NET, Oracle, Microsoft SQL Server, Delphi
Independent Consultant
MySQL, PHP, Oracle, Microsoft SQL Server, Delphi
Experience
- SQL - 10 years
- C - 6 years
- Java - 5 years
- Delphi 7 - 4 years
- C# - 3 years
- SQL Server Management Studio (SSMS) - 3 years
- SQLiteManager - 2 years
- .NET - 1 year
Preferred Environment
Microsoft SQL Server
The most amazing...
...language I designed and implemented was for complex data exchange operations.
Work Experience
Systems Engineer
2010 - PRESENT
Independent Consultant
- Developed a programming audit solution using Delphi and Developer Express components to identify SQL sentences in programs and store them in a DB2 database.
- Built an experimental app for Android 2.3 which included geolocation and data graphics, using Eclipse, Java, and SQLite. I uploaded this app in Google Play for testing purposes too.
- Created an operational app on Android 4.2 which included RESTful web services, signature collection and label printing, using Eclipse, Java, and SQLite.
- Supported and enhanced the server component for the previous development, using Visual Studio, WCF, C#, SQL Server, and Integration Services.
- Designed the data model and the software functionality for a logistics application that will be implemented on the web and on Android.
Technologies: Delphi, MySQL, SQLite, Microsoft SQL Server, Visual Studio, C#, Eclipse, Android, Java
Software Development Manager
2008 - 2010
Primestone S.A.
- Led the team of engineers, developers, and tester to improve the software development process in the company, working on Delphi, SQL Server and Oracle.
- Designed the functional architecture of the upcoming .NET version of the company's application using Visio. Defined the object abstraction and database design considerations for massive information storage and performance.
- Designed the data model in Visio for the .NET application which was to be implemented on SQL Server or Oracle.
- Developed, using Visual Studio (C#) and SQL Server, a data access system (ADO and reflection), domain (entities and business logic), and services for the configuration component of the .NET application.
- Developed a visualization tree for energy metering in Delphi.
Technologies: ADO.NET, Visio, Reflection, C#, .NET, Oracle, Microsoft SQL Server, Delphi
Systems Engineer
2006 - 2008
Independent Consultant
- Developed a library of routines to enable data interchange in format EDI867 using Delphi.
- Created a language for data interchange in Delphi on the databases SQL Server and Oracle in order to simplify the development of interfaces to other programs in formats: text, CSV, fixed length fields, delimited, and XML.
- Expanded the EDI867 development to generate analytics by means of a complex SQL sentence that did 12 joins of a table on itself. This sentence, which later on was transformed into a view, worked on SQL Server and Oracle.
- Downloaded, implemented, and upgraded the osCommerce open source B2C solution to PHP5 on MySQL to provide eBusiness services to companies.
- Designed and implemented adaptations to the osCommerce platform to establish an art gallery on the internet; using PHP5 and MySQL.
Technologies: MySQL, PHP, Oracle, Microsoft SQL Server, Delphi
Systems Engineer
2001 - 2006
TIC de Colombia LTDA
- Created a medical diagnostics tracking and reporting application using Delphi.
- Built an application to enable metadata definition and dynamic data entry forms generation to create EDI XML files for companies data interchange (in Delphi).
- Developed a web server in Java (JSP) on an Oracle database and a client API in Delphi to allow software remote-tracing (transmission and storage of internal values for diagnostics and debugging).
- Supported and developed add-ons for a local ERP developed by NCR for a telecommunications company, using C and Oracle SQL*Forms.
- Designed and developed a sales opportunity tracking application using a Progress database and tools.
Technologies: Microsoft SQL Server, Oracle, Java, Delphi
Systems Engineer
1989 - 1997
IBM Colombia
- Taught all the IBM portfolio of AIX (C-Shell, X Windows, TCP/IP, NFS) and TCP/IP (in platforms AS/400 and RISC/6000) courses.
- Developed the transparent printing facility for AIX using C language. I traveled to a residency at the IBM Support Center in Austin (Texas) to document this development in a technical IBM manual.
- Acted as the the technical leader of a joint venture between IBM and the Bogota telephone company (ETB)—designing, developing, and implementing the administration and IVR applications using C, Informix, and DirecTalk/6000.
- Led the implementation of the first IBM Internet service in Colombia, and developed the interface to invoice these services using the C language.
- Designed and developed the sales opportunity tracking application for the channels area using the Lotus Approach.
Technologies: IBM Lotus Approach, IBM Informix, AIX, C, TCP/IP
Systems Engineer
1987 - 1988
Bank Superintendency
- Developed the Customs General Storage Warehouses application in C and Oracle Pro*C.
- Participated in the design and development of the bank surveillance application using C and Oracle Pro*C.
- Developed the first communications application between the Superintendency and the banks.
- Developed the first WYSIWYG bank accounting reports application using C and Oracle Pro*C.
- Participated in the Colombian IT Award Competition in 1988 for my development to enable communication with the banks.
Technologies: C, Oracle, Unix
Experience
Project Línea 5 (IBM and ETB Joint Venture)
Took part in the contract negotiation and led the implementation of the voice mailbox service as well as the development of the necessary software for the administration and operation of the service. At the end, ETB gave the project an 87% of satisfaction which made me win the 1994 IBM Marketing Excellence Award that entitled me to assist to the 1995 Latin American Convention in San Francisco.
IBM RISC/6000 Product Specialist
Gave presales support to the first IBM open systems platform, RISC System/6000, with many success cases that entitled me to participate in technical residencies in Austin, Mexico, Toronto, and Gaithersburg.
In 1991, I wrote the transparent printing module in AIX. In 1990, the success in many RISC/6000 cases was recognized with the 1990 IBM Marketing Excellence Award that entitled me to assist to the 1991 Latin American Convention in New Orleans.
In 1991, I wrote the transparent printing module in AIX. In 1990, the success in many RISC/6000 cases was recognized with the 1990 IBM Marketing Excellence Award that entitled me to assist to the 1991 Latin American Convention in New Orleans.
IBM Global Network Product Manager
Led the launch of the IBM Internet Connection Service in Colombia. Developed the internet service invoicing application.
Part-Time Professor of Operating Systems
Between 1994 and 1996, I worked as a part-time professor at the Colombian School of Engineering teaching a class called Operating Systems 1.
NCR | Sintel ERP
I managed the execution of a support and software development contract with NCR Colombia for their software SINTEL—an ERP specialized in the telecommunications industry which was installed in their customer Empresa Regional de Telecomunicaciones del Valle del Cauca (ERT). As a result of these services, NCR could successfully close the ERT project, after many years of execution.
Brainbench Certifications
Between 2006 and 2008, I achieved Brainbench (http://www.brainbench.com) certifications of Project Manager, Systems Architect, IT Manager, Product Manager, Manager/Coordinator, and Sales Specialist.
Data Model for PrimeRead.NET
I designed the data model for the new .NET version of the PrimeRead application, originally developed in Delphi. It was a very complex, functionally rich model with high requirements for database performance.
Android 2.3 Golf App
I wrote this test application to familiarize myself with the Android environment and application lifecycle. Although it is not 100% complete, it shows how to take advantage of this environment. The sample code I've submitted is the data level of this app.
Deliveries and Returns Android App
This app is used in a construction equipment rental company to handle the deliveries and returns in a controlled manner. It is used by warehouse coordinators and by transporters to report the loading, transportation, and delivery of the equipment to the customer construction site, and to, when the rental expires, to register the pickup, transportation, and restocking of the returned equipment.
It uses advanced features like location reporting, ticket printing, signature gathering, photography of items, and web services to get master data and report activities to the main business application of the company.
It uses advanced features like location reporting, ticket printing, signature gathering, photography of items, and web services to get master data and report activities to the main business application of the company.
Education
2017 - 2017
Specialization in Big Data
University of California, San Diego | Coursera - Online
2015 - 2016
Certificate in Social Sector Leadership
University of California, Berkeley | Philanthropy University - Online
1997 - 1997
Diploma with Distinction in Business Administration
University of California, Berkeley - Berkeley, CA, USA
1981 - 1986
Bachelor's Degree in Systems and Computing Engineering
University of Los Andes - Bogota, Colombia
Skills
Libraries/APIs
Spark ML, Google Maps SDK
Tools
Microsoft Visual Studio, SQLiteManager, Visual Studio, Visio, Android Studio, Eclipse IDE, Spark SQL
Languages
C#, C, SQL, Java, Delphi 7, Delphi, PHP, PHP 5
Storage
SQL Server Management Studio (SSMS), SQL Server Integration Services (SSIS), SQL Server 2008, SQLite, Microsoft SQL Server, IBM Informix, MySQL
Frameworks
.NET, ADO.NET, Apache Spark, Hadoop
Platforms
Unix, Windows, Android, Oracle, Eclipse, NetBeans, AIX, Linux
Paradigms
REST
Other
Software, French-English Translation, English-Spanish Translation, Spanish-English Translation, Objects, Web Services, Reflection, TCP/IP, IBM Lotus Approach, Unix Shell Scripting
Collaboration That Works
How to Work with Toptal
Toptal matches you directly with global industry experts from our network in hours—not weeks or months.
1
Share your needs
Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2
Choose your talent
Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3
Start your risk-free talent trial
Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.
Top talent is in high demand.
Start hiring