(Senior) UI / UX Designer (m/w/d) - in Vollzeit

📍 Job Overview

Job Title: (Senior) UI / UX Designer (m/w/d) - Full-time

Company: freshcells systems engineering GmbH

Location: Düsseldorf, North Rhine-Westphalia, Germany

Job Type: Full-time

Category: UI/UX Design, Product Development

Date Posted: November 4, 2026

Experience Level: 5-10 Years

Remote Status: On-site

🚀 Role Summary

• Spearhead the UX conception of complex web applications, driving user-centric design for sophisticated digital solutions.

• Execute UI visual design with a focus on creating sustainable, appealing, and brand-aligned interfaces that enhance user engagement.

• Conduct thorough analysis of existing products and processes to identify opportunities for usability and conversion rate optimization.

• Collaborate closely with a multidisciplinary team of web and product development experts to deliver cohesive digital solutions.

• Present design concepts, user flows, and final deliverables to both internal stakeholders and external clients, articulating design decisions and their business value.

📝 Enhancement Note: While the role is titled "UI / UX Designer," the emphasis on "complex web applications," "usability and conversion optimization," and "cross-functional collaboration with web & product development experts" strongly indicates a focus on product-centric design operations. The requirement for presenting results to stakeholders also points to a need for strong communication and strategic alignment, common in operations-oriented design roles within tech companies.

📈 Primary Responsibilities

• Develop comprehensive UX strategies and user flows for intricate web applications, ensuring intuitive navigation and optimal user journeys.

• Design visually compelling and consistent UIs, leveraging established UI patterns and developing/advancing design systems to maintain brand integrity and scalability.

• Conduct user research, usability testing, and A/B testing to gather insights for iterative design improvements and performance enhancements.

• Translate business requirements and user needs into actionable design specifications, prototypes, and high-fidelity mockups using industry-standard tools.

• Analyze product performance metrics and user feedback to drive data-informed design decisions and proactively identify areas for optimization.

• Collaborate with Product Managers, Developers, and other stakeholders to define project scope, prioritize features, and ensure successful implementation of design solutions.

• Present design concepts, prototypes, and research findings to cross-functional teams and leadership, effectively communicating the rationale and anticipated impact.

• Stay abreast of the latest design trends, technologies, and best practices in UI/UX, web technologies, e-commerce, SaaS, and B2B tech to inform design strategies.

📝 Enhancement Note: The responsibilities listed go beyond basic design tasks. They include strategic analysis ("analysis of existing products/processes," "usability- and conversion-optimization"), defining work steps ("selbstständige Definition von notwendigen Arbeitsschritten"), prioritization ("Einschätzung und Priorisierung von Aufgaben mit dem höchsten Mehrwert für Business- & Use-cases"), and stakeholder presentations. These are key elements of operations-focused roles where design directly impacts business outcomes and process efficiency.

🎓 Skills & Qualifications

Education: While a formal degree in a related field (e.g., Human-Computer Interaction, Design, Computer Science) is not strictly required, candidates with a completed university degree, vocational training, or equivalent practical experience are encouraged to apply. The emphasis is on demonstrable experience and skills.

Experience: A minimum of 5 years of relevant professional experience in UI/UX design is mandatory. This experience should cover the full design lifecycle, from conception to implementation and optimization.

Required Skills:

• Minimum 5 years of hands-on experience in UI/UX design for complex web applications.

• Proficiency with design and prototyping tools, with a strong emphasis on Figma.

• Expertise in defining, applying, and evolving UI patterns and design systems for consistency and scalability.

• Solid understanding of web technologies and their implications for design implementation.

• Proven experience in usability testing and conversion rate optimization strategies.

• Demonstrated ability to analyze existing products/processes and recommend data-driven improvements.

• Strong presentation and communication skills, with experience presenting to internal and external stakeholders.

• Excellent command of German and English, both written and spoken. Preferred Skills:

• Experience in the e-commerce, B2B tech (process software), or SaaS sectors.

• Familiarity with agile development methodologies.

• Understanding of front-end development principles (HTML, CSS, JavaScript) to facilitate collaboration with engineering teams.

• Experience with user research methodologies beyond usability testing.

• Knowledge of accessibility standards (WCAG).

📝 Enhancement Note: The explicit mention of "Einschätzung und Priorisierung von Aufgaben mit dem höchsten Mehrwert für Business- & Use-cases" and "Analyse von bestehenden Produkten/Prozessen sowie deren Usability- und Conversion-Optimierung" suggests that candidates with experience in prioritizing based on business impact and optimizing existing systems for efficiency are highly valued, aligning with operations principles.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Case Studies: Showcase 2-3 detailed case studies demonstrating your end-to-end UI/UX design process for complex web applications. Each case study should highlight a specific problem, your design approach, key decisions, and measurable outcomes.

• Usability & Conversion Optimization: Include examples where you analyzed existing products/processes and implemented design changes that led to measurable improvements in usability and conversion rates. Quantify these improvements whenever possible (e.g., % increase in conversion, % decrease in task completion time).

• Design System Contribution: Showcase your experience with design systems, including examples of how you've applied existing systems or contributed to their development and evolution.

• Prototyping & Interaction Design: Demonstrate your proficiency with Figma or similar tools by including interactive prototypes that illustrate complex user flows and interactions.

• Stakeholder Presentation Examples: Briefly describe a situation where you presented design work to stakeholders, outlining your communication strategy and the outcome.

Process Documentation:

• Workflow Design: Provide examples of how you've defined necessary work steps for developing digital solutions, illustrating your structured approach to project execution.

• Prioritization Frameworks: Explain or demonstrate how you’ve assessed and prioritized tasks based on business value and use-case impact, showcasing your strategic thinking.

• Collaboration & Iteration: Document instances of close collaboration with cross-functional teams (developers, product managers) and how you incorporated feedback into iterative design processes.

📝 Enhancement Note: The emphasis on analyzing existing processes, optimizing for conversion, and prioritizing tasks based on business value strongly implies that a portfolio demonstrating strategic thinking, process improvement, and quantifiable results will be highly regarded. This aligns with the operational aspect of design, where efficiency and impact are paramount.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for a Senior UI/UX Designer with 5-10 years of experience in Düsseldorf, Germany, the estimated annual gross salary range is €60,000 - €85,000. This estimate considers the company's size (60+ employees), industry (software services), and the specific responsibilities outlined.

• Note: This is an estimated range. Actual compensation will be determined by the candidate's specific experience, skills, and performance during the interview process.

Benefits:

• Flexible Working Hours: Accommodates early birds and night owls, promoting work-life balance.

• Dog-Friendly Office: A welcoming environment for employees who wish to bring their canine companions to work.

• Secure & Long-Term Employment: Offering a stable and future-oriented position within a growing company.

• Company Pension Scheme: Employer-subsidized contributions to a retirement savings plan.

• Regular Feedback & Team Meetings: Structured opportunities for communication, including team meetings and retrospectives, fostering transparency and continuous improvement.

• Monthly Company Breakfast: A social gathering to foster team cohesion and informal networking.

• Room for Own Ideas & Personal Development: Encouragement and support for employees to contribute innovative ideas and pursue personal growth.

• Free Access to Digital Learning Courses: Comprehensive resources for continuous skill development and professional advancement.

• Urban Sports Club Subsidy: Financial support for a membership to a wide range of sports and fitness facilities.

• Deutschlandticket Subsidy: Contribution towards a public transportation pass valid across Germany.

• Bicycle Leasing: Opportunity to lease bicycles through the JobRad program, promoting sustainable commuting.

• Relocation Support: Assistance for candidates who need to relocate to Düsseldorf.

• German Language Courses: Free courses provided for individuals who are new to Germany, facilitating integration.

Working Hours: The role is full-time, with flexible working hours. This means employees can adjust their start and end times within certain parameters, supporting a better work-life integration, crucial for deep work and focused design tasks.

📝 Enhancement Note: The detailed list of benefits, including professional development and flexible hours, is typical for tech companies that prioritize employee well-being and continuous learning, which is critical for design professionals staying current with technology and trends. The salary estimate is based on current market data for similar roles in Germany.

🎯 Team & Company Context

🏢 Company Culture

Industry: Software Services / IT Consulting. freshcells systems engineering GmbH operates within the dynamic and competitive software development sector, specializing in providing expert services to clients. This environment demands innovation, adaptability, and a strong focus on delivering high-quality digital solutions.

Company Size: Over 60 creative experts. This mid-sized structure suggests a balance between the agility and close-knit feel of a smaller team and the resources and stability of a larger organization. For operations professionals, this often means opportunities for broader impact and cross-functional exposure.

Founded: (Not explicitly stated, but implied to be established enough to have over 60 employees and a robust benefits package). The company emphasizes its journey in software development, suggesting a history of growth and evolution.

Team Structure:

• Multidisciplinary Expertise: The team comprises experts from various domains within web and product development, including designers, developers, and likely project managers and QA specialists. This fosters a collaborative environment where diverse perspectives contribute to solution design.

• Cross-Functional Collaboration: The role explicitly requires close collaboration with experts from all areas of web and product development, indicating a highly integrated team structure where designers work hand-in-hand with engineers and product strategists.

• Open Communication & Feedback: The company culture prioritizes "open communication," "regular exchange," "feedback," and "retrospectives." This operational approach ensures continuous improvement, transparency, and a healthy team dynamic.

Methodology:

• Innovation-Driven: The company is "innovationsgetriebenes" (innovation-driven) and invests in "neue Ideen," suggesting a forward-thinking approach to technology and problem-solving.

• Team-Oriented: The belief that "the best results arise in the team" highlights a collaborative and collective approach to achieving goals.

• Learning from Mistakes: The acknowledgment that "we make mistakes, but we learn from them" indicates a culture that embraces experimentation and continuous improvement, a crucial aspect of operational excellence.

• Agile Principles: While not explicitly stated, the mention of retrospectives and flexible working hours hints at agile or agile-adjacent methodologies being employed.

Company Website: https://www.freshcells.de/de/

📝 Enhancement Note: The company culture, with its emphasis on innovation, teamwork, learning from mistakes, and open communication, is highly conducive to operational roles. These elements foster an environment where process improvements, efficiency gains, and strategic design thinking are not only welcomed but actively encouraged.

📈 Career & Growth Analysis

Operations Career Level: This role is positioned as a "(Senior) UI / UX Designer," implying a mid-to-senior level of expertise. A "Senior" designation typically signifies at least 5 years of experience, a deep understanding of design principles and methodologies, and the ability to work independently, mentor junior team members, and influence project direction. In an operations context, this means contributing to strategic design decisions that impact product success and business outcomes.

Reporting Structure: While not explicitly detailed, the role involves "close collaboration with a team of experts from all areas of web & product development" and "presentation of work results to internal and external stakeholders." This suggests reporting to a Design Lead, Product Manager, or Head of Development, with significant interaction across development and potentially client-facing teams.

Operations Impact: The UI/UX Designer's impact is directly tied to the success of digital products. By optimizing usability and conversion rates, the role directly influences key business metrics such as customer acquisition, retention, user satisfaction, and ultimately, revenue. The analysis and improvement of existing processes also contribute to operational efficiency within the product development lifecycle.

Growth Opportunities:

• Leadership in Design: Potential to grow into a Lead UI/UX Designer role, managing a team, setting design strategy, and overseeing major projects.

• Specialization: Opportunity to deepen expertise in specific areas like UX research, interaction design, design systems, or product strategy within the SaaS or B2B tech domains.

• Cross-Functional Expertise: Gaining deeper insights into product management and software development processes through close collaboration, potentially leading to roles with broader product ownership.

• Mentorship: As a senior member, opportunities to mentor junior designers, developing leadership and coaching skills.

• Continuous Learning: Access to free digital learning courses and support for personal development actively encourages skill enhancement aligned with industry advancements.

📝 Enhancement Note: The "(Senior)" title and the emphasis on influencing business value and optimizing processes highlight this role's operational significance. Growth opportunities extend beyond pure design to leadership and strategic product input, common pathways for senior operations-focused designers.

🌐 Work Environment

Office Type: The company offers an on-site work environment at its Düsseldorf location. The description mentions a "dog-friendly working environment," suggesting a more relaxed and employee-centric office atmosphere.

Office Location(s): The primary office is located in Düsseldorf, Germany, at Burghofstr. 40, 40223. This location is within a major German city, offering good accessibility and amenities.

Workspace Context:

• Collaborative Space: The emphasis on "teamwork," "close collaboration," and "regular exchange" implies an office designed to facilitate interaction, brainstorming, and shared work.

• Modern Tools & Technology: The role requires "creative handling of state-of-the-art web technology & design tools," indicating that the workspace is equipped with the necessary technology and software to support advanced design work.

• Team Interaction: The presence of a dynamic team of over 60 experts provides ample opportunities for informal learning, knowledge sharing, and building professional relationships.

• Inclusive Atmosphere: The explicit statement "All people are welcome here..." underscores a commitment to diversity and inclusion, creating a supportive and respectful workplace.

Work Schedule: The company offers "flexible working hours," allowing employees to adapt their schedules to personal needs and peak productivity times. This flexibility is crucial for deep work required in design, enabling focused sessions without strict adherence to a traditional 9-to-5 schedule.

📝 Enhancement Note: The combination of an on-site, collaborative environment with flexible hours and a focus on employee well-being (dog-friendly, inclusive culture) creates a productive workspace conducive to the detailed and iterative work required in operations-focused design roles.

📄 Application & Portfolio Review Process

Interview Process:

1. Application Submission: Submit your CV, cover letter (optional but recommended), and a link to your portfolio.

2. Initial Screening: HR or a hiring manager will review applications to assess qualifications against the role requirements.

3. Portfolio Review & Initial Call: Candidates with strong portfolios will be invited for an initial discussion, which may include a review of their portfolio and an exploration of their experience and approach to UI/UX design, usability, and conversion optimization.

4. Technical Interview / Design Challenge: A more in-depth interview, potentially including a take-home design challenge or an in-person/remote workshop. This will assess your problem-solving skills, design process, and ability to apply your expertise to real-world scenarios relevant to B2B tech or SaaS.

5. Stakeholder Interview: Meet with key stakeholders (e.g., Product Manager, Development Lead) to discuss collaboration style, project alignment, and strategic thinking. This stage will also assess your presentation skills and ability to articulate design decisions.

6. Final Interview & Offer: A final discussion to address any remaining questions and potentially extend a job offer.

Portfolio Review Tips:

• Showcase Process, Not Just Polish: For each project, clearly articulate the problem statement, your role, the design process (research, ideation, iteration, testing), key decisions made, and the final outcome. Quantify results whenever possible.

• Highlight Optimization & Business Value: Emphasize projects where you analyzed existing products/processes and implemented design changes that led to significant improvements in usability, conversion rates, or other key business metrics.

• Demonstrate Figma & Prototyping Skills: Include interactive prototypes that clearly show user flows and interactions. Ensure your Figma files are well-organized if requested.

• Tailor to the Role: Highlight experience relevant to complex web applications, B2B tech, SaaS, or e-commerce, if applicable.

• Prepare to Discuss Prioritization: Be ready to explain how you prioritize tasks based on business value and use-case impact.

Challenge Preparation:

• Understand the Context: If given a design challenge, ensure you fully understand the brief, the target audience, and the business objectives.

• Focus on Process: Demonstrate a clear, logical design process. Document your assumptions, research methods, ideation techniques, and decision-making rationale.

• Quantify Impact: Think about how you would measure the success of your proposed solution and be prepared to discuss relevant metrics.

• Presentation Skills: Practice articulating your thought process and solution concisely and persuasively. Be ready to answer questions about trade-offs and alternative approaches.

📝 Enhancement Note: The emphasis on analyzing existing products, optimizing for conversion, prioritizing based on business value, and presenting to stakeholders suggests that the interview process will heavily scrutinize the candidate's operational thinking and ability to drive tangible business results through design. A portfolio that clearly demonstrates these capabilities will be crucial.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: Explicitly mentioned as a required design tool. Expect proficiency in creating wireframes, high-fidelity mockups, interactive prototypes, and potentially design system components within Figma.

• Prototyping Tools: Experience with Figma's prototyping features or other dedicated tools (e.g., InVision, Adobe XD) is expected for demonstrating user flows and interactions.

• Design Systems: Proficiency in working with and contributing to design systems is a key requirement. This involves understanding component libraries, style guides, and maintaining design consistency.

Analytics & Reporting:

• Usability Testing Tools: Experience with platforms for conducting remote or in-person usability tests (e.g., UserTesting.com, Maze, Lookback) would be beneficial for analyzing user behavior.

• Web Analytics Tools: Familiarity with tools like Google Analytics or similar platforms to understand user behavior, track conversion funnels, and identify areas for optimization.

• A/B Testing Platforms: Experience with tools used for A/B testing design variations to measure performance impacts.

CRM & Automation:

• While not directly mentioned for the designer role, an understanding of how UI/UX design impacts user journeys within CRM systems or SaaS platforms used by clients (e.g., Salesforce, HubSpot for B2B) could be advantageous.

• Familiarity with project management and collaboration tools like Jira, Confluence, Asana, or Trello is highly probable given the collaborative nature of the work.

📝 Enhancement Note: The focus on Figma and design systems, combined with the need for usability and conversion optimization, indicates a tech stack geared towards efficient, scalable design production. Understanding how design integrates with analytics and potentially CRM/SaaS platforms highlights the operational connectivity of the role.

👥 Team Culture & Values

Operations Values:

• Authenticity: Genuine and transparent interactions and work approach.

• Individual Talent Development: Commitment to nurturing and growing each employee's unique skills and potential.

• Open Communication: Encouraging free-flowing dialogue, feedback, and transparency across all levels.

• Respect, Trust, and Responsibility: Foundational values for building strong relationships and fostering a accountable work environment.

• Innovation: A drive to explore new ideas, technologies, and solutions.

• Teamwork: Belief that collective effort yields the best results.

• Learning from Mistakes: A growth mindset that views errors as opportunities for improvement.

• Openness and Courage: Willingness to embrace new approaches and take calculated risks.

Collaboration Style:

• Cross-Functional Integration: Designers work closely with experts from all areas of web and product development, fostering a highly integrated and collaborative workflow.

• Feedback-Driven Iteration: Regular exchange, feedback sessions, and retrospectives are integral to the design and development process, ensuring continuous improvement and alignment.

• Knowledge Sharing: The dynamic team environment and emphasis on learning likely promote informal knowledge sharing and collaborative problem-solving.

📝 Enhancement Note: The company's core values – authenticity, individual development, open communication, respect, trust, responsibility, innovation, teamwork, and learning from mistakes – create a fertile ground for operations professionals. These values support a culture where process improvements, efficiency, and data-driven decision-making are naturally integrated into daily work.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing User Needs with Business Goals: Effectively translating complex business requirements and use cases into user-friendly designs that also drive key performance indicators (KPIs) like conversion rates.

• Managing Stakeholder Expectations: Presenting design decisions and navigating feedback from diverse internal and external stakeholders with varying priorities and perspectives.

• Keeping Pace with Technology: Continuously learning and adapting to new web technologies, design tools, and user behavior trends in the fast-evolving SaaS and B2B tech landscape.

• Optimizing Complex Systems: Analyzing and improving the usability and efficiency of intricate web applications, which often involves dealing with legacy systems or challenging user flows.

Learning & Development Opportunities:

• Skill Advancement: Dedicated support for personal development and free access to digital learning courses provide ample opportunities to enhance UI/UX skills, explore new design methodologies, or deepen knowledge in specific sectors like SaaS or e-commerce.

• Industry Exposure: Working on diverse projects for clients in B2B Tech and SaaS offers exposure to various business challenges and industry best practices.

• Mentorship & Leadership: Senior role provides opportunities to mentor junior designers and potentially grow into leadership positions within the design team.

• Cross-Disciplinary Growth: Close collaboration with developers and product managers allows for learning about the broader product development lifecycle and strategic decision-making.

📝 Enhancement Note: The challenges presented are common in operations-focused design roles, requiring strategic thinking, stakeholder management, and continuous learning. The growth opportunities are well-aligned with career progression in operations, emphasizing leadership, specialization, and cross-functional expertise.

💡 Interview Preparation

Strategy Questions:

• "Describe a complex web application you've designed. What were the key UX challenges, and how did you approach solving them?" (Focus on process, user-centricity, and business impact.)

• "Walk us through a project where you significantly improved usability or conversion rates. What data did you use, what changes did you implement, and what were the results?" (Highlight analytical skills, optimization strategies, and quantifiable outcomes.)

• "How do you prioritize design tasks when faced with competing business and user needs? Can you provide an example?" (Demonstrate understanding of business value assessment and strategic prioritization.)

• "How do you approach building or evolving a design system? What are the key considerations for ensuring its consistency and adoption?" (Showcase knowledge of scalable design practices.) Company & Culture Questions:

• "Based on our website and the job description, what do you see as the biggest opportunities for UI/UX design at freshcells?" (Show research and strategic thinking.)

• "How do you handle constructive criticism or differing opinions from stakeholders or team members regarding your designs?" (Assess collaboration and communication skills.)

• "Describe a time you learned from a mistake in a project. What was the situation, and what did you do differently afterward?" (Evaluate growth mindset and learning agility.) Portfolio Presentation Strategy:

• Storytelling: Frame each case study as a narrative: the problem, your approach, the solution, and the impact.

• Quantify Results: Use data and metrics whenever possible to demonstrate the effectiveness of your designs (e.g., "increased conversion by X%", "reduced task completion time by Y%").

• Highlight Process: Clearly explain your thought process, design decisions, and the rationale behind them. Show wireframes, user flows, and iterations.

• Focus on Optimization: Emphasize projects where you analyzed existing systems and implemented improvements.

• Conciseness: Be prepared to present your key projects within a given timeframe, focusing on the most relevant aspects for this role.

📝 Enhancement Note: The interview preparation advice focuses on demonstrating strategic thinking, data-driven decision-making, and the ability to articulate business value – all hallmarks of operations-oriented roles. A strong portfolio that showcases these aspects will be critical for success.

📌 Application Steps

To apply for this (Senior) UI / UX Designer position:

• Submit Your Application: Utilize the provided application link to submit your CV and a link to your online portfolio.

• Curate Your Portfolio: Ensure your portfolio prominently features 2-3 detailed case studies showcasing your experience with complex web applications, usability/conversion optimization, and design systems. Quantify results and highlight your process.

• Tailor Your Resume: Update your resume to emphasize your 5+ years of relevant UI/UX experience, proficiency with Figma, experience in analysis and optimization, and stakeholder management skills. Use keywords from the job description.

• Prepare for Case Studies/Challenges: Anticipate potential design challenges or scenario-based questions. Practice articulating your design process, decision-making, and the business impact of your solutions.

• Research the Company: Familiarize yourself with freshcells systems engineering GmbH, their services, and their company culture. Understand their focus on B2B Tech and SaaS.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.

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