UX designer - Senior

Freelancer Opportunity

Job title: Sr. UX Designer

Job location: Brussels, Belgium

Job duration: 2026-10-01 to 2027-03-31

Job weekly hours: 40 hrs./week

Job salary range: 80 to 85 euros an hour

Job description:

DVA Chapter Area

Within DVA Chapter Area, the Enterprise team creates the dialogues of the Proximus Enterprise Digital Assistant (chatbot), improves customer user experience and responds to the digital needs of today's customer.

As UX conversational designer you will be part of a multidisciplinary team responsible for the implementation and delivery of conversational chatbot for enterprises.

You will report to the Chapter Owner responsible for the designers working on tools for our enterprise customers (B2B) where customer journeys are key. Alternately, you will sit with designers from the chapter and with other content designers on Mondays. You will spend the other days of the week with your squad members.

Your key responsibilities:

• Design and optimize conversational flows for chatbots and multimodal interfaces

• Create and maintain conversation design systems and dialogue patterns

• Develop persona frameworks and tone of voice guidelines for AI assistants

• Conduct user research and usability testing for conversational interfaces

• Collaborate with AI/ML teams to enhance natural language understanding

• Design inclusive conversations that work across diverse user groups

• Implement analytics and metrics to measure conversation success

• Design natural, multi-turn conversations across chat and hybrid channels.

• Collaborate with Business and UX Service Designers to embed conversational touchpoints in broader journey systems.

• Prototype and test and optimize conversational experiences to refine clarity, empathy, and efficiency.

Required competences:

• 3+ years of experience in designing conversational interfaces, chatbots, or AI-driven experiences.

• Able to translate technical logic into simple, intuitive experiences.

• Must have previous conversational design and copywriting expertise with a sensitivity to tone and emotional context

• Have basic UX skills and a background in UX, behavioral design, or growth hacking

• Skilled in tools like Voice flow, Bot press, or Dialog flow

• Proficient with digital collaboration tools (Fig Jam, Miro, Mural)

• Skilled in data analysis, KPIs, and feasibility assessment

• Able to engage and motivate cross-functional team members and stakeholders

• Experienced in coaching product/design teams

• Familiar with AI-powered products/assistants

• Experience in working in the enterprise context is a plus!

An ideal candidate.

Passionate about language, technology and AI

Eager to learn and to take initiatives

Realizes how conversational bots should be designed from the point of view of both design and copy

Knows how these conversational bots work and what the possibilities and limitations are

Good communicator, both with management and with colleagues

Team player and can collaborate well with several profiles like NLP Designers, Product Owners, business stakeholders

Creative and an out-of-the-box thinker

Customer-oriented

Good organizer

Knows how to adopt a positive mindset and attitude, even in stressful situations

Open to change related to working in a digital environment.

Apply now and start your journey with Team Possible! We want to get to know you.

After your application, we will verify your profile and get back to you within 3

working days.

If you’re successful, you can expect the following steps:

An initial conversation with our recruiter - Swati Kumari

Interview with the Hiring Manager and the team.

Final decision

About Proximus

We are Team Possible turning tech into opportunities.

We are driven by four core pillars: "I care," "I make a difference," "I radically simplify," and "I embrace the future". This means you'll join a team that genuinely cares for customers and colleagues, is empowered to make a real impact, strives to radically simplify complex challenges, and is always looking ahead to embrace the future of technology. We believe in an inclusive and safe environment where everyone can thrive, offering extensive career development resources, including access to over 5,000 training modules and a minimum of 5 days of training per year, to help you continuously learn, grow, and tackle bold challenges with us.