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#HumanizingTechnology
About Seidor
SEIDOR helps organizations transform and stay competitive through technology and innovation, always putting people first. With over 8,000 professionals in 45 countries, we are a diverse and inclusive global team committed to talent, equal opportunities, and sustainable growth.
We deliver high-impact projects across industries, working with leading technology partners such as SAP, Microsoft, Salesforce, IBM, Google, AWS, Cisco, and Adobe. At the same time, we foster an environment where people can grow professionally and personally from day one.
Guided by strong ESG values, SEIDOR is also committed to sustainability and has achieved net-zero status by reducing and offsetting its carbon footprint.
Will you join us in humanizing technology?
We want you to be a part of our team, from Brussels - Nearsite, as an Interface designer.
WHAT WILL YOU DO IN YOUR DAY-TO-DAY?
Requirements
WHAT DO WE EXPECT FROM YOU?
A minimum educational qualification corresponding to a bachelor’s level or 3 years of higher education.
Mandatory Specific Expertise
About Seidor
SEIDOR helps organizations transform and stay competitive through technology and innovation, always putting people first. With over 8,000 professionals in 45 countries, we are a diverse and inclusive global team committed to talent, equal opportunities, and sustainable growth.
We deliver high-impact projects across industries, working with leading technology partners such as SAP, Microsoft, Salesforce, IBM, Google, AWS, Cisco, and Adobe. At the same time, we foster an environment where people can grow professionally and personally from day one.
Guided by strong ESG values, SEIDOR is also committed to sustainability and has achieved net-zero status by reducing and offsetting its carbon footprint.
Will you join us in humanizing technology?
We want you to be a part of our team, from Brussels - Nearsite, as an Interface designer.
WHAT WILL YOU DO IN YOUR DAY-TO-DAY?
- Translation of business requirements into an UI solution.
- User Experience (UX) analysis.
- Consultancy on UI at any step of the design of a digital solution (from brainstorming to research, sketches, prototypes, user tests and final implementation).
- Visual prototyping of UI solutions such as designing (low- and high-fidelity) wireframes, mock-ups and story boards which lead to an intuitive user experience.
- Design and development of UI solutions for different web products and platforms, including showing styling, use of typography, images, text, the definition of Information Architecture, interaction workflows and navigation.
- Creation and maintenance of style guides, brand book and visual component libraries, including sketched concepts and page templates.
- Creation of graphical elements including illustrations, visuals, infographics, data visualisations, etc.
- Definition of user-centred evaluations of UI solutions, identifying key usability problems and providing recommendations on how to solve them (including the participation in usability studies with users).
- Contribution to test scenarios and test result analysis regarding the UI components.
- Front-end development of responsive UI solutions following good coding practices, including creation/correction of CSS and transforming mock-ups into semantic HTML and development of innovative solutions for different platforms as well as integration with DBs or other server-side logic.
- Documentation of code, ensuring easy maintenance & evolution.
- Optimization of application for maximum performance and scalability.
- A diverse team. We respect the differences that make us more human.
- We work as a team and learn from each other.
- Flexibility and work-life balance. Remote working is in our DNA. We promote flexible working hours and offer shorter working day every Friday, as well as in the months of July and August.
- Continuous learning. Language courses, technical training, certifications, and more.
- Personalized career development, allowing you to decide where you want to go.
- Autonomy and the opportunity to suggest and promote new opportunities.
- Flexible compensation program. Childcare vouchers, restaurant benefits, transportation, and health insurance.
- Exclusive discounts and special conditions on technology, leisure, travel, and more.
- You can be part of charitable and environmentally related initiatives.
- If you have international interests, we are present in 45 countries.
Requirements
WHAT DO WE EXPECT FROM YOU?
A minimum educational qualification corresponding to a bachelor’s level or 3 years of higher education.
Mandatory Specific Expertise
- at least 4 years of specific expertise with Angular
- at least 4 years of specific expertise with Javascript/Typescript
- at least 2 years of specific expertise with library components (Angular Material, PrimeNG)
- at least 2 years of specific expertise with Figma/Adobe Experience Design
- at least 1 year of specific expertise with GitLab
- Knowledge of web technologies, frameworks and standards such as HTML, XHTML, CSS and jQuery development, W3C, accessibility, SEO, JavaScript, Angular, React, Vue.
- Knowledge of wireframing and interactive prototyping design tools such as Balsamiq,InVision, UxPin, Framer.js or similar.
- Knowledge of design and graphical tools such as Adobe Photoshop, Illustrator, or similar.
- Knowledge in customisation of collaborative tools such as Atlassian’s Confluence or similar.
- Knowledge of (web/visual) design, graphical and prototyping tools and software.
- Knowledge of UX design best practices, including user interface ergonomics, knowledge of responsive design, data protection and security principles.
- Knowledge of user-centred design principles and methodologies, including development of usability test plans for all stages of a project life-cycle based on defined target audiences,personas and user stories.
- Knowledge of user testing through all stages of a project, including different techniques (e.g.eye tracking, dynamic/static verification) and methods of testing (e.g. remote usability testing, A/B testing, hallway testing, post release testing).
- Knowledge in cross-browser compatibility and testing.
- Knowledge of web ergonomics, usability and accessibility.
- Knowledge of fundamental visual and typographic design disciplines and principles.
- Knowledge of prototyping, wireframing, interaction flows, information architecture and user testing.
- Experience in agile development environments.
- Understanding of security practices and protocols.
- Capability to work in an international/multicultural environment, including participation in multi-lingual meetings.
- Confidence and creativity to go beyond the obvious and to defend design ideas.
- Ability to cope with fast-changing technologies used in visual design.
- Strong communication skills in English and/or French.
Key Skills
Ranked by relevance
ui
prototyping
wireframing
responsive
angular
css
ux
security practices
responsive design
adobe photoshop
illustrator
javascript
typography
wireframes
prototypes
confluence
salesforce
photoshop
jquery
server
react
aws
seo
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- Posted
- Apr 01, 2026
- Type
- Full-time
- Level
- Mid-Senior
- Location
- Brussels
- Company
- SEIDOR
Industries
Technology
Information
Internet
Categories
Information Technology
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3 roles aligned with this opportunity
View Job Details
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Senior Frontend Developer @ Ovos Media GmbH
2026-04-11
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Technology
Information Technology
View Job Details
Related
AI Fullstack Engineer
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Frontend Developer ( (ReactJS or Angular)
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