Elder Santos

São José dos Campos - State of São Paulo, Brazil

Member since March 6, 2013

An accomplished software engineer, Elder specializes in machine learning and data science. He has expertise in the full life cycle of the software design process, including: requirement specifications, prototyping, proof of concept, human-interface design, implementation, testing, and maintenance.

Elder is now available for hire

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Portfolio

LynasLogic
C#, T-SQL, PL-SQL, PostgreSQL, WPF, WCF, JavaScript, AWS, Azure, SIlverlight...
Microsoft Innovation Center
C#, VB.NET, Sharepoint, SQL Server, Oracle, Linux, Java, WF, WPF, WCF...
Onset Technologies
C#, SQL Server, Oracle, My SQL, VB.NET, C++, Sharepoint

Experience

C#, 8 years
Python, 6 years
JavaScript, 6 years
SQL, 6 years
Machine Learning, 5 years
Node.js, 3 years
R, 1 year
Express.js, 1 year

São José dos Campos - State of São Paulo, Brazil

Availability

Part-time

Preferred Environment

Mac, Sublime, GitHub

The most amazing...

...software I've built is an aircraft maintenance program directly connected to the military 1553 bus, which uses shortest path algorithms and a little AI.

Employment

Technical Lead
LynasLogic
2008 - PRESENT
- Supported software engineering team with technical decision-making.
- Worked as Senior Developer in .NET platform.
- Handled development of applications related to financial products.
- Maintained old or out-dated C# projects for customers around the world.
- Updated a legacy application using ASP.NET MVC, C#, JavaScript, MVVM, and Twitter Bootstrap, releasing an entirely new version.
Technologies: C#, T-SQL, PL-SQL, PostgreSQL, WPF, WCF, JavaScript, AWS, Azure, SIlverlight, EntityFramework, NHibernate, Dapper, Oracle
Technical Lead
Microsoft Innovation Center
2007 - 2008
- Handled technical requirements in interop projects.
- Developed cross-platform software for Windows and Linux.
- Worked with the most up-to-date Microsoft technologies including Silverlight, WPF, WCF, and WWF.
- Researched local market and provided training for locals.
- Supported local companies with technologies like: Microsoft Silverlight, WPF, WCF, WWF and SQL Server.
Technologies: C#, VB.NET, Sharepoint, SQL Server, Oracle, Linux, Java, WF, WPF, WCF, Silverlight
Solution Archtect
Onset Technologies
2007 - 2008
- Provided interoperability between .NET and Ruby applications.
- Analyzed software requirements and provided solutions based on the Microsoft platform.
- Solved business problems with solutions architected under the .NET platform and other Microsoft products.
- Held responsibility for internal and external projects as Project Manager using Microsoft Sharepoint technologies.
- Created a global application for Johnson & Johnson to monitor all their other applications (including ERP) around the world.
Technologies: C#, SQL Server, Oracle, My SQL, VB.NET, C++, Sharepoint

Experience

SPL Fiscal (Development)
A web application written in ASP.NET using NHibernate to handle ORM communication with SQL Server and Oracle databases. the app is used to generate digital files dynamically according to user configurations.
Includes a great background execution process to analyze data and yield results in different formats.
Keeptrue Web Site (Development)
http://www.keeptrue.com
A Sharepoint 2010-based web site used to offer audits on Brazilian fiscal files.
Data Mining for Predictive Social Network Analysis (Publication)
https://www.toptal.com/data-science/social-network-data-mining-for-predictive-analysis
Analysts have come to recognize social network data as a virtual treasure trove of information for sensing public opinion trends and groundswells of support. In this article, Toptal Engineer Elder Santos describes the techniques he employed for a proof-of-concept that effectively analyzed Twitter Trend Topics to predict, as a sample test case, regional voting patterns in the 2014 Brazilian presidential election.

Skills

Languages
HTML, Python, HTML5, C/C++, R, C#, CSS, JavaScript, SQL, TypeScript, F#
Frameworks
Flask, .NET, ASP.NET MVC, Bootstrap, NHibernate, Windows Communication Framework (WCF), Entity, AngularJS, ASP.NET Web API, Express.js, Django, Knockout.js, Caliburn
Libraries/APIs
jQuery, jQuery UI, Node.js, LinkedIn API, Backbone.js, Twitter API, Facebook API
Tools
Sublime Text, Micorsoft Visual Studio, GitHub, LINQ to SQL, SVN, TextMate, Mercurial, Talend ETL, Microsoft Team Foundation Server, Emacs, Microsoft Project
Paradigms
Object-oriented Programming (OOP), Design Patterns, Agile Software Development, Functional Programming, Procedural programming, Parallel programming
Storage
Microsoft SQL Server, MongoDB, PostgreSQL, JSON, NoSQL, MySQL, SQLite
Misc
Machine Learning
Platforms
Oracle, Windows, iOS, Azure, Windows 8, Mac OS, Linux

Education

Master degree in Artificial Intelligence
Universidade Federal de São Paulo - Sao Jose dos Campos
2014 - 2016
Bachelor degree in Computer Science
Universidade Federal de Sao Carlos - Sao Carlos, Brazil
2008 - 2012

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