Tchaka Spierings Email & Phone Number

'S-Hertogenbosch, North Brabant, Netherlands

At DevCo I work as a Senior Consultant, doing Full Stack Development. I mainly use React and Kotlin in my projects.

Rotterdam, South Holland, Netherlands

The Shell Agile Hub was created to develop new in-house products to enhance the Shell businessprocesses. I was part of small team creating a deal-capturing system, laying the foundation for a largersuite of data-driven web apps with the goal of modernising and improving efficiency in the business.Reliability is key in this field, and we spent a lot of time to make sure our software worked as expected.Using various testing methods with emphasis on automated user testing using Playwright and githubactions, which I introduced and developed. Most of the stack was built on React, extensive GraphQLapi's and GRPC, with python and Postgres in the backend. Later on the product transitioned from theexperimental phase to official integration in the Trade & Supply business unit, where our focus shiftedto adopting support for more countries and regions in the product.

Eindhoven, North Brabant, Netherlands

The Software Concepts team is a rapid-prototyping team within Philips Research. The team picks upprojects from other groups within philips that don't have the expertise or capacity to create a prototypethemselves. Within this team I've developed several React applications, dashboards, charts, data entryforms, etc. The technologies we used were mainly React, PostgreSQL, GraphQL, and Node in thebackend. I've also developed an Android app using Kotlin/Jetpack/Compose. The projects were mainlyworked on in pairs, and we'd be working on multiple projects at the same time. We had a very solidprocess to keep everything in line, using project generation, CI/CD and lots of re-use.

Eindhoven, North Brabant, Netherlands

Inbetween Cardiology and Software Concepts I developed a Triage Kiosk for Philips. This device wouldstand in a hospital and automatically measure a person's temperature, breath rate and heart rate todetermine if the visitor was allowed in or should see a nurse, triaging for COVID symptoms. The projectwas built using a React frontend communicating with a C# application running on local hardware. Theapplication interfaced with several sensors and camera's and provides data using a standard RESTinterface.

Eindhoven, North Brabant, Netherlands

At Philips research I developed a 'mission briefing' dashboard prototype for the cardiology department.In hospitals there is a lot of unstructured data, mostly paper documents. This data is hard to use, so itshould be digitized. This is done using a NLP algorithm, and the results of that are visualized using thementioned dashboard. In the dashboard, a doctor/assistant can validate and confirm this data, whichthen can be used in an insightful mission briefing dashboard to assist doctors in doing their job, insteadof wasting time with paperwork. This project was done using React, .NET (C#) and a FHIR databaseimplementation

Utrecht, Netherlands

Bottomline is a big player in the european oil & gas transport business. In 2017 they decided todevelop a new application to improve their planning using more automation and real time data. I wasresponsible for developing the UI of this application, for which we used the Angular framework. Theapplication consisted of 3 parts, the frontend running in a web browser, a backend made using Kotlinand Spring running in the (Google) cloud, and a compute engine running a linear solver to come upwith fully automated plans. The frontend uses a lot of complex interactions, among which mapcomponents (Google/OSM), multiple interactive gantt charts, drag&drop, streaming notifications andmore. Most of these were implemented custom to fit the specific use cases and style. The frontend wasextensively tested and automatically deployed using CI/CD tools.

Veldhoven, North Brabant, Netherlands

The YieldStar project is a massive project with many teams adding to the (Monolith) application. Allthese parts either generate or consume data, and it was the responsibility of the factoryautomation/integration team to control this flow. We worked in C# like the rest of the project, but werealso in control of devops, the desktops built into the YieldStar machine, and making the YieldStarsoftware communicate with other machines on the factory floor. Additionally I was part of the upgradeteam, where we introduced new versions of libraries (.NET) and tooling.

Veldhoven, North Brabant, Netherlands

At ASML I worked on the YieldStar project. This machine verifies the result of the lithography machines,to make sure they work correctly. It's a massive project with 500+ employees working on onemonolithic application. I worked in the UI team, where we implemented designs into a C# applicationusing .NET WPF. I was here only for a short time to fill in until they found employees for their backoffice in Russia, where the rest of the UI team was located