Senior UI Engineer (C#/JS, Ukraine)

Short Description:

We are looking for a Software developer with experience in both .NET/C# and modern JavaScript/TypeScript development to support industrial HMI and UI application development. The primary responsibility is to port an existing .NET-based HMI UI from one HMI platform to another similar HMI environment running on an x86 Intel-based edge device. The application runs in a Docker container and is exposed through a web server on the HMI. In addition, this role will support rapid UI prototyping for various industrial and edge applications using JavaScript, TypeScript, Node.js, and modern web UI frameworks. 

Roles and Responsibilities:

• Port an existing .NET-based HMI UI application from one HMI platform to another similar HMI environment

• Review existing UI architecture, code structure, dependencies, configuration, and deployment model

• Modify and adapt the existing .NET UI to work properly on the target HMI platform

• Ensure the application runs correctly on x86 Intel-based edge devices

• Support Docker-based deployment and troubleshooting for HMI and edge applications

• Configure and validate the UI application when exposed through the HMI web server

• Troubleshoot UI, runtime, browser, web server, container, networking, and platform compatibility issues

• Build quick prototype UIs for different industrial edge and cloud for internal application use cases

• Develop and maintain web-based UI components using JavaScript, TypeScript, Node.js, and modern frontend frameworks

• Support lightweight backend or service-side logic using Node.js when needed for UI prototypes

• Collaborate with software, automation, backend, product, and hardware teams to support integration and testing

• Maintain and improve existing UI functionality, layout, navigation, usability, and performance

• Support testing with real hardware, HMI devices, and edge environments

• Document technical changes, configuration steps, deployment procedures, and known limitations

• Follow clean version control, code review, testing, and release practices.

Qualifications:

• BS or MS degree in Computer Science, Software Engineering, Electrical Engineering, Computer Engineering, or related field

• Minimum 5 years of relevant software development experience

• Hands-on experience with .NET/C# application development

• Strong experience with JavaScript, TypeScript, and Node.js

• Experience developing, maintaining, or porting UI applications

• Experience with web-based applications running on local devices, embedded systems, industrial PCs, or edge platforms

• Experience with Docker or containerized application deployment

• Familiarity with x86 Intel-based systems, industrial edge devices, or HMI hardware

• Experience troubleshooting software compatibility issues across different runtime environments

• Strong problem-solving, debugging, and communication skills.

Required Competencies:

• Strong .NET/C# development skills

• Strong JavaScript, TypeScript, and Node.js development skills

• Ability to work across both .NET and JavaScript technology stacks

• Good understanding of UI application architecture and web-based UI development

• Ability to read, understand, modify, and port existing codebases

• Experience with HTML, CSS, JavaScript, TypeScript, and modern frontend development practices

• Familiarity with HMI systems, industrial UI applications, or operator interface software

• Experience working with Docker containers, container logs, environment variables, ports, and volumes

• Ability to troubleshoot runtime, deployment, browser, networking, and web server configuration issues

• Understanding of application configuration and deployment on edge devices

• Ability to quickly build functional UI prototypes based on evolving requirements

• Strong debugging, problem-solving, and independent execution skills

• Strong written and verbal communication skills

• Upper-Intermediate English.

What you will love about working here?

• We care about all our employees and want them to feel as comfortable as possible. That's why we offer them health insurance from the first days, regardless of the probationary period.
• The gift from the company - Christmas holidays from 25 December to 31 December.
• Сooperation with Superhumans center and Veteran HUB. Capgemini Engineering has supported the launch of psychological rehabilitation department of Superhumans. Our team also donnated over UAH 500 000 prosthetics for three Ukrainian defenders. Currently, we support psychological counseling provided by the Veteran Hub, and we have implemented a internal policy making the company friendly to military and veterans with the assistance of the Hub.