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Elder Santos, Machine Learning Developer in São José dos Campos - State of São Paulo, Brazil
Elder Santos

Machine Learning Developer in 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.
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Portfolio

  • Joinesty, Inc.
    C#, SQL Server, .NET Core, Python, TypeScript, Node.js, AWS, Angular/React
  • 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...

Experience

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

Location

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

  • Lead Software Engineer

    2016 - PRESENT
    Joinesty, Inc.
    • Created the whole infrastructure back- and front-end to support thousands of clients.
    • Managed the development team.
    • Designed and built a solution to store sensitive data from customers.
    Technologies: C#, SQL Server, .NET Core, Python, TypeScript, Node.js, AWS, Angular/React

  • Technical Lead

    2008 - 2016
    LynasLogic
    • Supported software engineering team with technical decision-making.
    • Worked as a senior developer in the .NET platform.
    • Handled the development of applications related to financial products.
    • Maintained old or outdated C# projects for customers around the world.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, Entity Framework, NHibernate, Dapper, Oracle

  • Technical Lead

    2007 - 2008
    Microsoft Innovation Center
    • 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 the 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

    2007 - 2008
    Onset Technologies
    • 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.
    • Managed internal and external projects 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.

  • 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

    Python, C#, HTML, R, C++, HTML5, SQL, JavaScript, CSS, C, TypeScript, F#

  • Frameworks

    Flask, .NET, ASP.NET MVC, AngularJS, Django, Express.js, Entity, Windows Communication Framework (WCF), Bootstrap, NHibernate, ASP.NET Web API, Knockout.js, Caliburn

  • Libraries/APIs

    jQuery, Node.js, jQuery UI, Facebook API, LinkedIn API, Twitter API, Backbone.js

  • Tools

    GitHub, Sublime Text, Microsoft Visual Studio, Mercurial, TextMate, LINQ to SQL, Subversion (SVN), Microsoft Project, Emacs, Microsoft Team Foundation Server, Talend ETL

  • Paradigms

    Object-oriented Programming (OOP), Agile Software Development, Functional Programming, Procedural Programming, Design Patterns, Parallel & Distributed Computing

  • Storage

    MongoDB, Microsoft SQL Server, JSON, NoSQL, PostgreSQL, MySQL, SQLite

  • Other

    Machine Learning, Windows Presentation Foundation (WPF), WPF

  • Platforms

    Oracle, Windows, iOS, Linux, MacOS, Azure

Education

  • Master degree in Artificial Intelligence
    2014 - 2016
    Universidade Federal de São Paulo - Sao Jose dos Campos
  • Bachelor degree in Computer Science
    2008 - 2012
    Universidade Federal de Sao Carlos - Sao Carlos, Brazil
Certifications
  • Microsoft® Certified Technology Specialist
    DECEMBER 2008 - PRESENT
    Microsoft
  • Microsoft Certified Dynamics Specialist
    AUGUST 2008 - PRESENT
    Microsoft
  • Microsoft Certified Application Developer
    AUGUST 2008 - PRESENT
    Microsoft
  • Microsoft Certified Systems Administrator:
    SEPTEMBER 2004 - PRESENT
    Microsoft
  • Microsoft Certified Database Administrator
    JUNE 2003 - PRESENT
    Microsoft
  • Microsoft Certified Solution Developer
    JANUARY 2002 - PRESENT
    Microsoft

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