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OneSource Consulting

User Experience Designer

OneSource Consulting
Belgium · Part-time · Mid-Senior

Job Title: UI/UX Designer

Location: Brussels, Belgium,

Work Regime: Part time 50%

Language: Dutch

Duration: 10/02/2026 - 01/03/2027


JOB DESCRIPTION:

  • We wish to strengthen the team with a UX/UI designer who will help his colleague in creating user-friendly, attractive and functional digital experiences. You will work closely with the team's UX/UI designer, as well as with the various technical and functional teams to understand the needs and translate them into intuitive and innovative design solutions. You are an expert in your field and have a positive influence on the design and development process by providing expertise, insight and creative solutions.

We see the following concrete tasks:

* Designing and iterating wireframs, prototypes and visual interfaces that meet the expectations of the users.

* Performing usability testing to gain insights and inform design decisions.

* Collaborate with business and IT to determine the UX/UI of the software.

* Monitoring consistency in design and branding.

* Translating complex problems into simple and elegant solutions that improve the user experience.

* Ensure that user feedback is integrated into all phases of the design and development process.

* Applying modern UX/UI methodologies to make products accessible, inclusive and easy to use.

  • Higher education (Master or Bachelor) with technical/engineering background or equivalent through experience with ICT technology for which expertise is
  • required Demonstrable experience for the technology in question or a similar technology
  • Language requirement: Dutch at European CEFR - level C2

Must‑have

  • Proven experience in creating designs with design tools (Adobe Creative Suite, Sketch, InVision, etc.)
  • Demonstrable knowledge and experience with responsive screen design
  • Applying modern UX/UI methodologies to create software that is accessible, inclusive, and easy to use
  • Proven experience in designing and iterating wireframes, prototypes, and visual interfaces that meet user expectations
  • Demonstrable experience with Figma, InVision, and/or InDesign
  • Demonstrable experience in setting up and maintaining design systems
  • Proven experience with the technology in question or a similar technology – 5 years, Senior
  • Language requirement: Dutch at European CEFR level C2

Should‑have

  • Demonstrable experience in implementing designs in HTML, CSS, and JavaScript
  • Demonstrable experience with content design (design of content‑driven pages)
  • Higher education (Master or Bachelor) with technical/engineering background or equivalent through experience with ICT technology – Yes

Nice‑to‑have

  • Demonstrable experience as a UX designer – 5 years, Senior
  • Demonstrable experience in projects at the Flemish government, preferably ministries and where interaction with agencies and cabinets was necessary – Yes

Key Skills

Ranked by relevance

designer prototypes invision adobe creative suite design systems javascript responsive wireframes sketch figma css ux
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Posted
Feb 06, 2026
Type
Part-time
Level
Mid-Senior
Location
Brussels Region

Industries

Information Technology & Services

Categories

Information Technology

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