Senior Product Designer

📍 Job Overview

Job Title: Senior Product Designer

Company: Cosuno

Location: Berlin, Germany

Job Type: Full-time

Category: Product Design / UX/UI Design

Date Posted: April 13, 2026

Experience Level: Mid-Senior Level (3-5 years)

Remote Status: Fully Remote (within Germany) or Hybrid (Berlin Office)

🚀 Role Summary

• Spearhead the end-to-end product design process for complex B2B SaaS applications, from conceptualization through to final visual designs.

• Drive the evolution of our design language and ensure a cohesive user experience across our platform by collaborating with the existing Product Designer.

• Partner closely with product and engineering teams to identify and implement high-impact UX improvements, prioritizing technical feasibility and rapid delivery.

• Develop and maintain a scalable design system within Figma, ensuring consistency and efficiency in design workflows.

• Craft clear and engaging UI copy to enhance user navigation and product comprehension.

📝 Enhancement Note: This role is positioned as a Senior Product Designer, implying a need for a candidate who can operate with significant autonomy and strategic input into the product's design direction, particularly within a B2B SaaS startup environment. The emphasis on "end-to-end ownership" and "collaboration with the existing Product Designer" suggests a need for both independent contribution and team synergy.

📈 Primary Responsibilities

• Take full ownership of the product design lifecycle for assigned features and problem spaces, from initial user research and ideation to detailed wireframing, prototyping, and high-fidelity visual design.

• Collaborate extensively with Product Managers to frame problems, define scope, and align on design solutions that meet user needs and business objectives.

• Work in lockstep with Engineers to ensure designs are technically feasible, optimized for performance, and implemented accurately, providing detailed specifications and assets.

• Contribute to and maintain the company's design system in Figma, ensuring its scalability, consistency, and adoption across the product.

• Conduct user testing and gather feedback on prototypes and designs to iterate and validate solutions, ensuring a user-centric approach.

• Develop and refine UI copy to create intuitive and effective user flows, aligning with brand voice and product messaging.

• Participate in design reviews, providing and receiving constructive feedback to elevate the overall quality of design output.

• Stay abreast of design trends, best practices, and emerging technologies to continuously improve design processes and product outcomes.

📝 Enhancement Note: The responsibilities highlight a hands-on design role with significant strategic input. The expectation to "take full ownership" and "work hand-in-hand" with product and engineering indicates a need for strong communication and collaboration skills, alongside deep design expertise. The mention of "scalable design system" and "Figma" points to a mature design process and tooling requirement.

🎓 Skills & Qualifications

Education: While no specific degree is mandated, a Bachelor's degree in Design, Human-Computer Interaction, Computer Science, or a related field is often preferred for product design roles. A strong portfolio demonstrating equivalent practical experience will be highly valued.

Experience: 3–5 years of professional experience as a Product Designer, with a significant focus on B2B SaaS products and high-growth startup environments.

Required Skills:

• Proven track record of designing complex, desktop-first B2B web applications end-to-end, as evidenced by a strong portfolio.

• Exceptional product thinking capabilities, with the ability to identify pragmatic, "80/20" solutions that balance user value, technical constraints, and business goals.

• Expert-level proficiency in Figma, including advanced skills in component libraries, design systems, and collaborative design workflows.

• Demonstrated ability to translate abstract concepts into high-fidelity interactive prototypes and polished visual designs.

• Strong understanding of user-centered design principles, interaction design patterns, and information architecture.

• Excellent communication and interpersonal skills, with the ability to articulate design decisions and trade-offs clearly to cross-functional teams.

• Self-driven, outcome-oriented, and capable of working independently while proactively communicating progress, challenges, and constraints.

Preferred Skills:

• Experience using AI-assisted tools for rapid prototyping or code generation.

• Foundational knowledge of HTML/CSS, enabling the ability to implement minor improvements directly.

• Experience in UX copywriting or content design.

• Familiarity with agile development methodologies.

📝 Enhancement Note: The emphasis on "B2B SaaS company or high-growth SaaS startup" and "complex, desktop-first B2B web applications" in the requirements strongly suggests the need for candidates who understand the nuances of enterprise software design, user workflows, and data-intensive interfaces, rather than consumer-facing applications. The "native German speaker" requirement is critical for effective communication within the local team and with German-speaking users.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• Showcase a minimum of 2-3 detailed case studies of complex B2B SaaS product design projects.

• Clearly articulate your role and contributions in each project, focusing on the end-to-end design process from problem framing to final implementation.

• Demonstrate your problem-solving approach, highlighting how you identified user needs and business goals.

• Illustrate your interaction design skills with examples of wireframes, user flows, and interactive prototypes.

• Present high-fidelity visual designs that reflect your aesthetic sensibility and adherence to design principles.

• Provide evidence of collaboration with product managers and engineers, detailing how you navigated technical constraints and feedback loops.

• Include examples of how you utilized or contributed to a design system and component libraries.

Process Documentation:

• Portfolios should implicitly demonstrate an understanding of design process documentation, including user journey mapping, wireframing, prototyping, and usability testing reports.

• Candidates are expected to articulate their design process clearly during interviews, explaining their methodology for tackling design challenges.

📝 Enhancement Note: The portfolio requirements are heavily weighted towards demonstrating a structured, end-to-end design process for complex B2B applications. The emphasis on "pragmatic '80/20' solutions" and "technical feasibility" suggests that candidates should showcase their ability to deliver effective designs within real-world constraints, not just theoretical perfection.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for Senior Product Designers in Berlin, Germany, with 3-5 years of experience in B2B SaaS, a competitive salary range would typically fall between €65,000 and €85,000 annually. This range can vary based on specific skills, portfolio strength, and negotiation.

Benefits:

• Competitive compensation package.

• Permanent employment contract.

• Modern work equipment provided.

• Regular company and team events (both offline and online).

• Access to an open feedback culture with regular 1-on-1s.

• Support for professional development and continuous learning.

• Flexible working arrangements: fully remote within Germany or hybrid from the Berlin office.

Working Hours: Typically 40 hours per week, with flexibility to accommodate remote work and individual productivity needs, aligning with common practices in German tech companies.

📝 Enhancement Note: Salary estimation is based on German market rates for senior-level design roles in tech startups, considering the specified experience level and location. Benefits are directly extracted from the provided text, emphasizing flexibility and professional growth.

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology / Software (specifically B2B SaaS for the construction industry).

Company Size: Cosuno is described as a "fast-growing tech startup," indicating a dynamic and evolving environment, likely within the 50-200 employee range, though this can fluctuate rapidly.

Founded: The founding date is not explicitly stated but is implied to be recent given the "fast-growing startup" description.

Team Structure:

• The Product Design team likely consists of the existing Product Designer and this new Senior Product Designer, potentially leading to a small but impactful design function.

• Close collaboration is expected with dedicated Product Managers and Engineering teams, forming cross-functional squads focused on specific product areas.

Methodology:

• Cosuno utilizes Artificial Intelligence (AI) as a core technology to analyze vast amounts of price data, enabling precise and efficient bidding for construction companies.

• The company embraces innovation and simplicity to solve complex industry challenges.

• An "open feedback culture" suggests a commitment to continuous improvement and transparent communication.

Company Website: https://www.cosuno.com

📝 Enhancement Note: The company culture is portrayed as innovative, collaborative, and focused on leveraging AI to disrupt a traditional industry. The "fast-growing startup" nature means roles can be broad, and individuals are expected to be adaptable and proactive. The construction industry context is unique and implies a need for designers to understand specific user pain points and workflows within that sector.

📈 Career & Growth Analysis

Operations Career Level: This role is a Senior Product Designer, indicating a position of significant responsibility and autonomy. It sits above a standard Product Designer and potentially below a Design Lead or Head of Design. The role requires not just execution but also strategic input into design direction and process improvement.

Reporting Structure: You will likely report to a Head of Product, Design Lead, or potentially a CTO, depending on the current organizational structure of the fast-growing startup. Collaboration will be extensive with Product Managers and Engineering leads.

Operations Impact: As a Senior Product Designer, your work will directly influence the usability, efficiency, and adoption of Cosuno's B2B SaaS platform. This includes impacting how construction companies interact with tenders and procurement processes, leading to potential cost savings and time efficiencies for customers. Your contributions will be critical to the product's market success and competitive edge, driven by user-centric design and AI integration.

Growth Opportunities:

• Specialization: Deepen expertise in B2B SaaS design, AI-driven product features, or specific aspects of the construction tech domain.

• Leadership: Potential to grow into a Design Lead role, mentoring junior designers and shaping the design team's strategy as the company scales.

• Product Strategy: Influence product roadmap and strategy through design-led innovation and user insights.

• Skill Development: Opportunities to learn and apply AI-assisted prototyping tools, and potentially gain foundational HTML/CSS skills for direct implementation.

• Industry Expertise: Become a subject matter expert in the digitalization of the construction industry.

📝 Enhancement Note: The "Senior" title and the startup environment suggest ample opportunities for growth beyond individual contribution, including leadership and strategic influence. The emphasis on AI and a specific industry provides a unique path for specialization.

🌐 Work Environment

Office Type: Cosuno offers a hybrid work model. Employees can choose to work fully remotely within Germany or from their modern office located in Berlin Friedrichshain.

Office Location(s): Berlin, Germany (specifically Friedrichshain).

Workspace Context:

• Collaborative Environment: The company culture fosters open-mindedness and collaboration, encouraging interaction across teams, whether in person or remotely.

• Tools & Technology: Access to modern work equipment is provided, supporting both remote and office-based work. This includes the primary design tool, Figma.

• Team Interaction: Regular company and team events are organized to foster connection and camaraderie, bridging the gap between remote and office-based employees.

Work Schedule: While a standard 40-hour work week is typical, the remote and hybrid options suggest a degree of flexibility to manage personal schedules and optimize productivity, common in tech startups.

📝 Enhancement Note: The emphasis on flexibility (fully remote within Germany or hybrid) is a key aspect of the work environment, catering to modern work preferences. The Berlin office location provides a hub for those who prefer in-person collaboration.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your resume and portfolio to assess alignment with the role's requirements and experience level.

• Portfolio Presentation: A dedicated session where you will present 1-2 of your most relevant case studies, detailing your process, challenges, solutions, and impact. Be prepared to discuss your role and decision-making.

• Design Challenge (potential): You might be asked to complete a small design exercise or a take-home challenge focused on a specific problem relevant to Cosuno's platform.

• Team Interviews: Discussions with Product Managers, Engineers, and potentially the existing Product Designer to assess collaboration skills, product thinking, and cultural fit.

• Final Interview: Likely with a founder or senior leadership to discuss strategic alignment and overall fit.

Portfolio Review Tips:

• Focus on B2B SaaS: Prioritize case studies that showcase experience with complex user flows, enterprise features, and data-heavy interfaces.

• Quantify Impact: Wherever possible, use metrics to demonstrate the success of your designs (e.g., improved conversion rates, increased user efficiency, reduced support tickets).

• Showcase Process: Clearly articulate your design thinking, research methods, iteration cycles, and how you collaborated with stakeholders.

• Figma Proficiency: Be ready to discuss your approach to design systems, component libraries, and collaborative workflows within Figma.

• Problem Framing: Clearly state the problem you were solving and the constraints you were working within.

• Conciseness: While detail is important, ensure your presentation is focused and respects the interviewer's time.

Challenge Preparation:

• Understand the Domain: Research the construction industry, tender processes, and procurement challenges to better understand Cosuno's user base.

• Product Thinking: Prepare to articulate your thought process on how to approach a design problem for a B2B SaaS product, considering user needs, technical feasibility, and business goals.

• Figma Skills: Refresh your knowledge of Figma's advanced features, especially concerning design systems and collaborative workflows.

📝 Enhancement Note: The interview process emphasizes practical application and collaborative problem-solving, with a strong focus on the candidate's ability to articulate their design process and impact, particularly within a B2B SaaS context.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: This is explicitly mentioned as the primary design tool. Proficiency in advanced features like component libraries, variants, auto layout, and collaborative features is essential.

• Prototyping Tools: While Figma has robust prototyping capabilities, familiarity with other tools like InVision, Principle, or Axure might be beneficial, especially if AI-assisted prototyping is involved.

Analytics & Reporting:

• While not explicitly stated, experience with analytics platforms (e.g., Google Analytics, Mixpanel, Amplitude) to understand user behavior and measure design impact would be advantageous.

CRM & Automation:

• Not directly relevant to the Product Designer role, but an understanding of how CRM systems and automation workflows impact the user experience of B2B SaaS products is a plus.

📝 Enhancement Note: Figma is the cornerstone of the tool stack for this role. The mention of "AI-assisted coding tools" for prototypes suggests an openness to cutting-edge technology and potentially a need for designers to explore rapid functional prototyping.

👥 Team Culture & Values

Operations Values:

• User-Centricity: A commitment to understanding and solving real-life problems for users in the construction industry.

• Innovation & Simplicity: Driving efficiency and transparency through technology, particularly AI, while keeping solutions intuitive.

• Collaboration: Working in an open-minded, international team where ideas are valued and shared.

• Data-Driven Decisions: Leveraging AI and data analysis to inform product development and business strategies.

• Efficiency & Pragmatism: Delivering effective "80/20" solutions that balance user value, technical constraints, and business goals.

Collaboration Style:

• Cross-Functional Integration: Close partnership with Product Managers and Engineers is fundamental to the design process.

• Open Feedback: A culture that encourages regular feedback and open communication to support professional development and product improvement.

• Shared Ownership: Team members are encouraged to take ownership of problems and solutions, fostering a sense of collective responsibility.

📝 Enhancement Note: The company values align with typical high-growth tech startups, emphasizing innovation, user focus, and collaboration. The unique aspect is the application of these values within the construction industry context, using AI as a key enabler.

⚡ Challenges & Growth Opportunities

Challenges:

• Industry Nuances: Understanding the specific workflows, pain points, and terminologies of the construction industry to design effective solutions.

• Balancing Innovation with Pragmatism: Delivering cutting-edge features (like AI integration) while ensuring they are user-friendly, technically feasible, and deliver immediate value.

• Scaling a Design System: Evolving and maintaining a design system that supports a rapidly growing product and team.

• Remote/Hybrid Collaboration: Ensuring effective communication and collaboration across a distributed team.

Learning & Development Opportunities:

• AI in Design: Exploring and implementing AI tools for prototyping and design exploration.

• Industry Expertise: Gaining deep knowledge of the construction tech landscape.

• Design Leadership: Developing skills in mentoring, strategic design planning, and team building.

• Technical Skills: Potentially acquiring foundational HTML/CSS knowledge for direct implementation.

📝 Enhancement Note: The challenges are tied to the specific industry, the startup growth phase, and the adoption of new technologies like AI, offering significant learning opportunities.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you had to balance user needs, technical constraints, and business goals for a B2B SaaS product. How did you arrive at your solution?" (Focus on product thinking and pragmatic solutions).

• "Walk us through your process for designing a complex feature from scratch. What research methods did you use? How did you involve engineers and product managers?" (Focus on end-to-end process and collaboration).

Company & Culture Questions:

• "What interests you about Cosuno and our mission to revolutionize the construction industry with technology?" (Show genuine interest and research).

• "How do you contribute to a collaborative and open feedback culture, especially in a remote or hybrid setting?" (Highlight teamwork and communication skills).

Portfolio Presentation Strategy:

• Structure Your Case Studies: Use a clear narrative: Problem -> Your Role -> Process -> Solution -> Impact -> Learnings.

• Highlight B2B SaaS Specifics: Emphasize complexity, user workflows, and enterprise-level considerations.

• Show, Don't Just Tell: Use visuals (screenshots, prototypes, user flows) to illustrate your points effectively.

• Be Ready for Deep Dives: Prepare to answer detailed questions about your design decisions, trade-offs, and the rationale behind them.

• Connect to Cosuno: If possible, draw parallels between your experience and Cosuno's product and mission.

📝 Enhancement Note: Interview preparation should focus on demonstrating a strong understanding of B2B SaaS design principles, a structured and collaborative design process, and the ability to articulate impact and rationale clearly, especially concerning Figma and design systems.

📌 Application Steps

To apply for this Senior Product Designer position:

• Submit your application through the provided link on Ashby.

• Tailor your Resume: Highlight your experience with B2B SaaS products, end-to-end design processes, Figma proficiency, and any experience with AI or complex web applications. Use keywords from the job description.

• Curate Your Portfolio: Select 2-3 compelling case studies that best showcase your ability to design complex B2B SaaS applications, demonstrating your problem-solving skills, process, and impact. Ensure your contributions are clearly defined.

• Prepare Your Presentation: Practice presenting your chosen case studies, focusing on clarity, conciseness, and articulating your design rationale and impact. Be ready to discuss your experience with design systems and Figma.

• Research Cosuno: Familiarize yourself with Cosuno's product, mission, and target industry. Understand their use of AI and their market position.

⚠️ 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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