Daan Terra, Developer in Amsterdam, Netherlands
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Daan Terra

Verified Expert  in Engineering

Scrum Master Developer

Location
Amsterdam, Netherlands
Toptal Member Since
September 10, 2015

Daan is enthusiastic and helpful. He uses software design with object-oriented thinking and system engineering principles in technical domains. He's experienced in developing large and complex products, using requirement engineering for the regulated medical field. He's comfortable with C#.NET, Java, Python, and Android. Daan worked in interdisciplinary teams as team lead, scrum master, and product owner. International projects resulted in the successful and timely delivery of entire products.

C#Microsoft Visual Studio.NETWindowsC#.NETAgile Software DevelopmentJavaScrumUnit TestingXMLSubversion (SVN)MercurialAndroid APILINQAzure DevOps

Portfolio

Edwards Lifesciences
Jira, Jenkins, Subversion (SVN), Windows Presentation Foundation (WPF), C#...
Royal Dutch Airlines (KLM)
REST, Windows Presentation Foundation (WPF), C#, Visual Studio...
ByTerra
Material Design, LibGDX, OpenGL, Android, Windows, In-app Purchases

Experience

C# - 15 yearsAgile Software Development - 14 yearsObject-oriented Design (OOD) - 13 yearsJava - 12 yearsScrum Master - 7 yearsRequirements & Specifications - 6 yearsWindows Presentation Foundation (WPF) - 6 yearsScrum Product Owner - 4 years

Availability

Part-time

Preferred Environment

Android Studio, Visual Studio, IntelliJ, Requirements, Regulatory Compliance

The most amazing...

...demo I've developed lets people drive through a real-world city and reproduces an accurate 3D traffic simulation immediately afterward from laser-scanned data.

Work Experience

Software Engineer & System Engineer

2017 - PRESENT
Edwards Lifesciences
  • Developed new features to perform medical procedures in C# using WPF.
  • Helped improve the development environment with automatic build and test processes.
  • Extended cross-device functionality where a C# GUI communicates with an embedded C++ app.
  • Facilitated the implementation of the Agile methodology and ensured it was running smoothly.
Technologies: Jira, Jenkins, Subversion (SVN), Windows Presentation Foundation (WPF), C#, Software Requirements Specifications (SRS), Requirements & Specifications, Design Verification Testing, Azure DevOps, Project Management, Visual Studio, Microsoft Visual Studio, Windows, Agile Software Development, .NET, XML, Scrum, LINQ, UML, Test-driven Development (TDD), Python, SQLite, SWIG, C#.NET, Scrum Product Owner, Scrum Master, Git, Azure DevOps Services, Regulatory Compliance

Freelance Software Engineer

2017 - PRESENT
Royal Dutch Airlines (KLM)
  • Developed a desktop widget for internal use.
  • Handled requirements analysis with non-tech departments.
Technologies: REST, Windows Presentation Foundation (WPF), C#, Visual Studio, Microsoft Visual Studio, Windows, .NET, C#.NET

Owner

2015 - PRESENT
ByTerra
  • Developed a user-configurable animated wallpaper for Android devices using OpenGL.
  • Developed a brainy puzzle game for Android devices.
Technologies: Material Design, LibGDX, OpenGL, Android, Windows, In-app Purchases

Freelance Project Developer

2016 - 2017
GriDD Consultancy
  • Analyzed project requirements.
  • Developed a tool to visualize partners and sales data geographically.
Technologies: AmMap, AmCharts, JavaScript, Windows, WebStorm

Freelance Software Engineer

2016 - 2017
Cireca Theranostics
  • Designed the UX for a tool for the exploration of microscope images and metadata.
  • Developed a prototype of the exploration tool.
Technologies: MATLAB, MySQL, Spring, JavaFX, Java, Windows

Freelance Android Developer

2016 - 2016
Pixelindustries
  • Helped develop an app for viewing premium video content.
  • Helped develop an app for recording personal video messages.
  • Helped develop a product store.
  • Added analytics functionality to an existing app.
  • Helped improve the quality of an existing codebase.
Technologies: Google Analytics, Facebook API, JSON, Android, Windows

Software Engineer

2010 - 2015
TASS International
  • Added a new configurable road segment with partial Euler spiral shape to a traffic scenario editor in C#.
  • Added a new sensor for the detection of lane markers to a traffic scenario simulator using OpenSceneGraph in C++, Python, and C#.
  • Developed a plugin to import road user data measured by laser scanners on a vehicle into a traffic scenario editor in C#.
  • Developed a plugin to import real-world traffic accident data into a traffic scenario editor in C#.
  • Developed a generation of 3D guardrail models using C# calling C++ through SWIG.
  • Added configuration and generation of lane marker patterns using C#.
  • Improved performance and usability of a traffic scenario editor in C#.NET.
  • Added 3D visualization of sensor beams to a traffic scenario simulation visualization. This is done with OpenSceneGraph in C++ with control from Java and Python.
  • Debugged a wide variety of issues through C#, Java, Python, C++, Matlab, and Simulink.
  • Managed work and communication as a Scrum Master of a team with interdisciplinary members.
  • Sought, assessed, interviewed, and trained new software development employees.
Technologies: Simulink, MATLAB, C++, Python, Java, C#, Project Management, Visual Studio, Microsoft Visual Studio, Windows, Agile Software Development, .NET, XML, Scrum, LINQ, Jira, UML, Test-driven Development (TDD), Qt, SWIG, C#.NET, Scrum Master, Windows Forms (WinForms)

Outsourced Software Engineer

2013 - 2013
SEARCH S.C. - Safety Engineering Research
  • Performed skill assessments, interviews, coaching, and project management to set up a new software development team.
  • Developed highly configurable road marking patterns for a traffic scenario editor for the automotive safety market.
  • Developed a plugin framework for a traffic scenario editor for the automotive safety market.
Technologies: C#, Microsoft Visual Studio, Windows, .NET, C#.NET

Computer Science Student

2005 - 2010
Delft University of Technology
  • Assisted the training of students in object-oriented software development principles.
  • Developed a Reversi/Othello artificial intelligence.
  • Developed a hand gesture recognition library for the control of a media player.
Technologies: C++, MATLAB, Java, C#, Visual Studio, Microsoft Visual Studio, Windows, .NET, SQLite, C#.NET

Scientific Research Intern

2009 - 2009
Associação Brasileira de Informática (ABINFO)
  • Developed a user experience research tool in Java to investigate the impact of input device on primary school children of multiple cultures.
Technologies: Java, Visual Studio, Microsoft Visual Studio, Windows, .NET, C#, C#.NET

Independent Software Developer

2007 - 2007
Dutch Heart Foundation
  • Developed a networked real-world running game for children in C#.
Technologies: C#, Visual Studio, Microsoft Visual Studio, Windows, .NET, C#.NET

Advanced Hemodynamic Monitoring Platforms

https://www.edwards.com/gb/devices/hemodynamic-monitoring
Contributed to the development of a medical device designed for continuous monitoring of the patient's hemodynamics during surgery in the operating room. As a software and system engineer, my primary focus was on enhancing usability and ensuring product quality. Throughout the project, I played a pivotal role in the team, performing different Scrum roles and actively participating in diverse team configurations.

Waving Wallpapers - Android App

Waving Wallpapers is an Android app that turns the home screen's background and lock screen into a live animated wallpaper of wavy patterns. Users can highly customize the wallpaper to personalize their mobile devices.

Highlight - Android Game

Highlight is a brainy puzzle game that runs on Android. Players place and rotate hexagonal tiles that contain wires across the tile. The wires form a path that challenges players to highlight the target by connecting the dots.
Image of Virtual Reality in the Automotive Industry publication
Publication

Virtual Reality in the Automotive Industry

https://www.toptal.com/virtual-reality/virtual-reality-in-the-automotive-industry

Languages

C#, XML, Java, C#.NET, Python, Simulink, UML, Haskell, JavaScript, HTML, GLSL, C, C++

Frameworks

Windows Presentation Foundation (WPF), .NET, NUnit, Android SDK, LibGDX, Spring, Qt, Google Protocol Buffer, JUnit, Boost, Knockout (Knockout.js)

Libraries/APIs

Android API, LINQ, Log4Net, jQuery, Windows Forms (WinForms), OpenGL, Facebook API

Tools

Mercurial, Microsoft Visual Studio, Subversion (SVN), Git, Android Studio, SWIG, Help+Manual, Mantis, MATLAB, Jira, Eclipse IDE, Visual Studio, WebStorm, Google Analytics, Jenkins, OpenSceneGraph, CMake, Azure DevOps Services

Paradigms

Agile Software Development, Object-oriented Design (OOD), Scrum, Object-oriented Programming (OOP), Unit Testing, Design Verification Testing, Azure DevOps, Test-driven Development (TDD), Reflective Programming, Design Patterns, REST, Functional Programming

Platforms

JavaFX, Windows, Android, Firebase, Linux

Other

Requirements, Technical Requirements, Architecture, QA Testing, Software Requirements Specifications (SRS), Requirements & Specifications, Scrum Product Owner, Scrum Master, Regulatory Compliance, Apps, AmCharts, AmMap, Material Design, In-app Purchases, log4j, Google Material Design, Doxygen, Google Play Store

Storage

JSON, MySQL, SQLite

Industry Expertise

Project Management

2007 - 2010

Master's Degree in Computer Science: Media and Knowledge Engineering

Delft University of Technology - Delft, The Netherlands

2004 - 2007

Bachelor's Degree in Computer Science

Delft University of Technology - Delft, The Netherlands