Lead Software Engineer
2016 - PRESENTJoinesty, 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: Amazon Web Services (AWS), Angular, React, AWS, Node.js, TypeScript, Python, .NET Core, Microsoft SQL Server, C#Software Developer
2020 - 2020Toptal Clients- Designed and developed a web proxy filter in GoLang. The product was composed of a web proxy plus a web administration tool. Both components were written in Go.
- Developed following the required RFCs and implementing the best security practices.
- Contributed to gathering interest from big players in the data loss prevention industry.
Technologies: Go, React, Node.js, TypeScript, AWS, Elasticsearch, Docker, Bootstrap, jQueryTechnical Lead
2008 - 2016LynasLogic- 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- Maintained old or outdated C# projects for customers around the world.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: Amazon Web Services (AWS), Oracle, Dapper, NHibernate, Entity Framework, Silverlight, Azure, AWS, JavaScript, Windows Communication Framework (WCF), Windows Presentation Foundation (WPF), PostgreSQL, PL/SQL, T-SQL, C#Technical Lead
2007 - 2008Microsoft 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: Silverlight, Windows Communication Framework (WCF), Windows Presentation Foundation (WPF), WWF, Java, Linux, Oracle, Microsoft SQL Server, SharePoint, VB.NET, C#Solution Archtect
2007 - 2008Onset 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: SharePoint, C++, VB.NET, MySQL, Oracle, Microsoft SQL Server, C#
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.
Elder is now available for hire
Portfolio
- Joinesty, Inc.Amazon Web Services (AWS), Angular, React, AWS, Node.js, TypeScript, Python...
- Toptal ClientsGo, React, Node.js, TypeScript, AWS, Elasticsearch, Docker, Bootstrap, jQuery
- LynasLogicAmazon Web Services (AWS), Oracle, Dapper, NHibernate, Entity Framework...
Experience
- C# 8 years
- SQL 6 years
- Python 6 years
- JavaScript 6 years
- Machine Learning 5 years
- Node.js 5 years
- Go 2 years
- Express.js 2 years
Availability
Part-time
Preferred Environment
GitHub, Sublime Text, MacOS, Ubuntu, Windows, Visual Studio Code
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
Experience
- SPL Fiscal (Development)https://www.avalara.com/br/en/solucoes/solucao-de-emissao-de-documentos-fiscais.html
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.
It includes a great background execution process to analyze data and yield results in different formats. - Sony Ci (Development)https://www.sonymcs.com/
Sony's Ci Media Cloud expands into cloud-native asset management. With the addition of a catalog, Ci provides content owners, studios, production companies, broadcasters, sports leagues, music labels, and large corporations with a comprehensive system that supports content management.
- Joinesty Password Manager (Development)https://app.joinesty.com
A web-based and browser extension application to manage passwords and secret notes over different devices and share them with team workers. It is hosted on AWS and uses several services from that. The core back end is in Go and the front end is TypeScript with React.
- Data Mining for Predictive Social Network Analysis (Publication)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, SQL, JavaScript, C#, HTML, Go, R, C++, HTML5, TypeScript, CSS, Visual Basic 6 (VB6), Less, T-SQL, VB.NET, Java, C, F#, SnowflakeFrameworks
Flask, .NET, ASP.NET MVC, Windows Presentation Foundation (WPF), AngularJS, Django, Express.js, Entity, Windows Communication Framework (WCF), Bootstrap, NHibernate, ASP.NET Web API, ADO.NET, Silverlight, WWF, .NET Core, Angular, ASP.NET, Knockout.js, Caliburn, Hadoop, Spark, AWS HALibraries/APIs
Node.js, jQuery, jQuery UI, Entity Framework, Vue.js, REST APIs, Facebook API, LinkedIn API, Twitter API, Backbone.js, React, Instagram APITools
GitHub, Sublime Text, Microsoft Visual Studio, AWS ECS, Mercurial, TextMate, LINQ to SQL, Subversion (SVN), Dapper, Azure Kubernetes Service (AKS), Visual Studio, AWS Key Management Service (KMS), Webpack, Amazon SQS, AWS Push Notification Service (AWS SNS), Microsoft Project, Emacs, Microsoft Team Foundation Server, Talend ETL, AWS Athena, Amazon Athena, Jira, AWS CodeBuild, AWS Glue, DataVizParadigms
Object-oriented Programming (OOP), Microservices, Agile Software Development, Functional Programming, Procedural Programming, Design Patterns, COM+, Distributed Computing, Parallel Computing, Microservices Architecture, Database Design, Web Architecture, API Architecture, REST, REST API Architecture, ETL, Requirements AnalysisPlatforms
Amazon Web Services (AWS), Windows, AWS Lambda, Oracle, SharePoint, Azure Functions, Azure IaaS, Docker, AWS EC2, AWS Kinesis, Ubuntu, Visual Studio Code, iOS, Linux, MacOS, AzureStorage
MongoDB, Microsoft SQL Server, JSON, NoSQL, PostgreSQL, AWS S3, PL/SQL, Redis, Elasticsearch, SQL Server 2012, SQL Azure, MySQL, SQLite, Redshift, Apache Hive, Data Lakes, AWS Data Pipeline Service, DatabasesOther
Machine Learning, AWS, CTO, Technical Leadership, WPF, Data Engineering, COM, Crypto, Elastic Load Balancers, Leadership, ETL Tools, Full-stack, Cloud Microservices, Integration, Fivetran, Data Analytics, Data Analysis, Data Warehousing, Big Data, Big Data Architecture, AWS API Gateway, Data Reporting, Data, Data Warehouse Design, Code Architecture, Data Architecture, System Architecture, Requirements & Specifications, User Requirements, Architecture
Education
- Master degree in Artificial Intelligence2014 - 2016Universidade Federal de São Paulo - Sao Jose dos Campos
- Bachelor degree in Computer Science2008 - 2012Universidade Federal de Sao Carlos - Sao Carlos, Brazil
Certifications
- Microsoft® Certified Technology SpecialistDECEMBER 2008 - PRESENTMicrosoft
- Microsoft Certified Dynamics SpecialistAUGUST 2008 - PRESENTMicrosoft
- Microsoft Certified Application DeveloperAUGUST 2008 - PRESENTMicrosoft
- Microsoft Certified Systems Administrator:SEPTEMBER 2004 - PRESENTMicrosoft
- Microsoft Certified Database AdministratorJUNE 2003 - PRESENTMicrosoft
- Microsoft Certified Solution DeveloperJANUARY 2002 - PRESENTMicrosoft
