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"A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away."

— Antoine de Saint-ExupĂ©ry

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Senior UI/UX Designer (all genders)

Quantum Stack Jobs đŸ‡©đŸ‡Ș Berlin, Germany

Hybrid Full-time Senior

Responsible for the end-to-end design process of complex professional applications, from strategic vision and design language to final UI. This includes managing design systems, advising clients on digital product development, and leading small UX/UI teams.

Responsibilities

  • Own the full design process for client projects, from vision and design language definition to final UI delivery
  • Create high‑quality user flows and interfaces for complex applications, ensuring consistency and accessibility
  • Strategically advise clients and project teams on digital product evolution, merging user insights with market trends
  • Develop, maintain, and champion design systems across products, including documentation, contribution rules, reviews, and training
  • Facilitate workshops, present design decisions to non‑design stakeholders, and lead pitches for proposals
  • Leverage AI tools to accelerate variant generation, research, analysis, and quality assurance
  • Provide technical leadership for small UX/UI teams, conducting design reviews, quality checks, and mentoring junior designers

Requirements

  • Minimum 5 years experience in UX and UI design for digital products
  • Degree in Communication Design, Interaction Design, Media Informatics, HCI or related field
  • Extensive experience with design systems creation and maintenance
  • Strong knowledge of accessibility standards and UX methods
  • Proven ability to work with development teams in agile environments
  • Excellent German and English written and spoken communication
  • Portfolio demonstrating end‑to‑end design process and system work

Benefits

  • 30 vacation days plus workation opportunities within the EU
  • Flexible working hours, remote work options, and part‑time models
  • Access to init Academy, trainings, certifications, and cross‑functional knowledge sharing
  • JobRad, public transport subsidy, and additional mobility benefits
  • Structured onboarding, welcome week, and mentorship program

Key Skills

UI/UX design Design systems User research Usability testing Accessibility (WCAG) Wireframing High‑fidelity prototyping Interaction design Information architecture Agile methodology Cross‑functional collaboration Workshop facilitation Presentation skills Mentoring AI‑assisted design tools Figma Sketch Adobe XD InVision HTML/CSS basics German language proficiency English language proficiency Strategic thinking Problem solving

About Quantum Stack Jobs

Zentric Analytics is a Montreal-based technology consultancy specializing in cloud infrastructure, event-driven systems, and data-intensive applications. We build scalable backend platforms and analytics pipelines for organizations across Canada and the Caribbean. Our flagship product, Quantum Stack Jobs, is a bilingual (English/French) tech job aggregator that uses LLM-powered extraction and automated translation to surface curated software engineering opportunities across Quebec and remote markets. We also operate CocoToursJM, a Jamaica tourism platform, and CariStocks, a Caribbean market data service. Our engineering stack spans AWS (Lambda, API Gateway, DynamoDB, Glue, Redshift), Laravel, Python, and Terraform-managed infrastructure. Whether you need a resilient REST API, a real-time data pipeline, or a full cloud migration, we deliver production-grade systems built for scale.

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