Dennis Heldens Email & Phone Number

Kampen, Nl

Joure, Friesland, Netherlands

Leusden, Utrecht, Netherlands

Genemuiden, Overijssel, Nederland

As an Architect at VConsyst, I am responsible for the architecture, infrastructure, and security of the solutions created. Additionally, I am operational and occasionally involved in development, making my responsibilities diverse across various areas.The major project involves migrating on-prem servers (both in-house and at an external data center) to the Azure Cloud seamlessly, without any downtime. Given the communication of numerous IoT devices, extensive processing, and the activation of many communication lines, this presented an exciting challenge.One of my goals is to gradually enhance security, and I have already made significant strides in this area. This includes the implementation of services, policies, a zero-trust policy, password policies, and more. To support this, I have authored an information security guide that serves as a guideline.I have also set up a substantial infrastructure in Azure DevOps, introducing Infrastructure as Code (currently using Terraform, previously worked with ARM/Biceps, and az cli PowerShell scripting). This facilitated the establishment of the entire cloud infrastructure.Another project involved researching, developing, and implementing a more modern communication method, specifically using the MQTT protocol to connect to an Azure IoT hub.Additionally, there are occasional smaller projects, such as configuring an Azure VPN gateway and coordinating with mobile providers to establish IPsec tunnels to our Azure Cloud environment. Also, various data communication projects with external sources/destinations using Azure Service Bus and Azure Functions.

Emmeloord, Flevoland, Nederland

Developed custom software for diverse clients, including websites, data processing applications, and integrations between software packages and systems. Primarily based on Microsoft Azure (cloud) products/services. Some exceptions included on-premise Windows services, ASP.NET websites on on-premise IIS servers, or WPF Windows applications.Projects included creating connections between systems/applications like Exact (globe/online), CMS, PerfectView, Elfsquad, Okta, etc. These connections took the form of console applications in a Docker container or a VM, or Azure Functions that could communicate via ServiceBus messages. Developed user application websites with authorization servers, PDF report generation, integration with other sites/systems, using Angular for the frontend and ASP.NET Core for the backend. Responsible for data retrieval and merging from various sources (APIs/databases) for reporting in BI, using tools like Azure Data Factory.Responsibilities encompassed pre-sales discussions with clients/business consultants, designing/solving solutions, developing solutions, mentoring juniors, conducting code reviews, setting up DevOps build & release pipelines (CI/CD), and supporting DevOps/service desk with deployment/support.

'T Harde

Ifective Software Engineering was a software development company, specialized in custom software on a project basis for various clients. Worked on a wide range of projects using Microsoft Gold Application partner and extensively leveraging Microsoft's cloud services. The acquisition of Ifective by Avit Integration (Avit Group) occurred in September 2020.

Utrecht, Nederland

GLS is an international logistics company transporting packages and freight, mainly for business clients. Developed various backend and frontend applications, including processes for customer and carrier billing, GLS Netherlands code library, Scanstation for barcode scanning, and Pakketshop Android app for shopkeepers. Lead developer of a development team, responsible for guiding internal and external developers, integration testing, releases, communication with other departments, and installations in test and production environments. Introduced Scrum to the project team, leading to its adoption by the entire Development department.Utilized tools and technologies: Visual Studio 2017, .NET Framework 4.6, C# 6.0, WinForms, TFS 2017, Scrum, TFS build definitions, MSBuild, Continuous Integration, NuGet packaging/deploying, Dependency Injection, Unity, Quartz, Topshelf, command pattern, unit testing, LINQ, Lambda expressions, MS Reporting, (S)FTP, SQL, AS/400 DB2, ODBC, Windows Server, Mono, Linux (SLES), Windows Server, TCP/IP sockets, Bluetooth, serial connections, thermal printer control, Java, Android Studio, Eclipse, JSON, WCF, Windows service.

Utrecht, Nederland

Ijsselstein, Utrecht, Nederland

Centric (formerly QMagic) is an ICT staffing agency. Detached to GLS Netherlands by Centric, later joined in a permanent capacity. Worked on early versions of the Scanstation software and track & trace website.Used tools and technologies: Visual Basic 6, VB.NET, MS SourceSafe, ASP, VBScript, JavaScript, CSS, DHTML, SQL, AS/400 DB2, ODBC.

Almere, Flevoland, Nederland

Primarily developed VB.NET applications with MSSQL database, created websites in PHP and ASP.NET, and provided hardware and software service within the company. Sintec calibrated and repaired measurement equipment for clients such as occupational health services, hospitals, and defense. Involved in the main project of creating a comprehensive software application to manage all company processes. Additionally, implemented a new system with barcode stickers.Used tools and technologies: VB.NET, MSSQL, MS Visual SourceSafe, XML, ASP.NET, PHP, CSS, JavaScript, Flash, DHTML, Windows Server, Mono, Linux (SLES), TCP/IP sockets, Bluetooth, serial connections, thermal printer control, Java, Android Studio, Eclipse, JSON, WCF, Windows service.

Almere, Flevoland, Nederland

Software development for education and occupational health services. Projects included creating software to track sick leave, developing a program for primary education to test student safety due to new laws, and a data conversion program to transfer data from an Oracle database to a Microsoft SQL database.Used tools and technologies: Borland Delphi, MSSQL server, Oracle.

Dronten, Flevoland, Nederland

Designed and built a website for a metalware company with features like a route planner and an interactive tour of the factory floor.Used tools and technologies: HTML, JavaScript, Flash, Photoshop.