Sr. Product Designer

📍 Job Overview

Job Title: Sr. Product Designer

Company: Cosuno

Location: Berlin, Germany (Remote within Germany also an option)

Job Type: Full-Time

Category: Product Design / UX/UI Design

Date Posted: May 13, 2026

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

Remote Status: Remote or Hybrid (Office in Berlin)

🚀 Role Summary

• Spearhead the end-to-end product design lifecycle for complex B2B SaaS applications, from initial ideation through to polished, deployable visual designs.

• Drive the evolution of Cosuno's design language and ensure a consistent, high-quality user experience across all platform interfaces.

• Foster close collaboration with Product and Engineering teams to identify and implement impactful UX enhancements, prioritizing rapid, technically feasible solutions.

• Develop and maintain a scalable design system within Figma, ensuring its consistent application across all design outputs.

• Craft clear and effective UI copy to enhance user guidance and product usability.

📝 Enhancement Note: This role is positioned as a Senior Product Designer, implying a significant level of autonomy and ownership over design initiatives. The emphasis on B2B SaaS and complex desktop-first applications suggests a need for a candidate experienced in enterprise-level design challenges.

📈 Primary Responsibilities

• Lead the complete product design process, from user research and problem framing to wireframing, prototyping, and high-fidelity visual design.

• Partner closely with Product Managers and Engineers to translate user needs and business requirements into intuitive and effective design solutions.

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

• Conduct user testing and gather feedback to iterate on designs and validate solutions.

• Write clear, concise, and user-centric UI copy that supports the overall user experience.

• Collaborate with the existing Product Designer to refine and expand the design language and style guide.

• Identify and advocate for high-impact UX improvements that align with technical feasibility and rapid delivery cycles.

📝 Enhancement Note: The responsibilities highlight a hands-on role with significant strategic input. The mention of "ready-to-ship visual designs" and "delivering solutions that are technically feasible and ship fast" indicates a need for designers who can balance aesthetic quality with practical implementation constraints, a common expectation in high-growth SaaS environments.

🎓 Skills & Qualifications

Education: While no specific degree is mandated, a Bachelor's or Master's degree in Design, HCI, Computer Science, or a related field is often preferred for senior roles, demonstrating a foundational understanding of design principles and user-centered methodologies.

Experience:

• 3–5 years of dedicated experience as a Product Designer.

• Proven track record within well-established B2B SaaS companies or high-growth SaaS startups.

Required Skills:

• Expert-level proficiency in Figma, including advanced features for collaboration, component libraries, and design system management.

• Strong product thinking capabilities, with a knack for identifying pragmatic "80/20" solutions that balance user needs, technical constraints, and business objectives.

• Proven ability to own the end-to-end design process, from ideation and problem framing to interaction design and final handoff.

• Excellent communication and collaboration skills, with the ability to work effectively with cross-functional teams (Product, Engineering).

• Self-driven, outcome-oriented mindset, capable of independent work while clearly articulating trade-offs and project constraints.

Preferred Skills:

• Experience utilizing AI-assisted coding tools (e.g., Claude code, Cursor) for building realistic, functional prototypes.

• Foundational understanding of HTML/CSS, enabling the contribution to smaller product or website improvements independently.

• Experience in UX copywriting, contributing to clear and effective user interface text.

📝 Enhancement Note: The requirement for native German and fluent English is critical for effective communication within the Berlin-based team and with potential German clients. The preference for AI-assisted coding tools and HTML/CSS knowledge indicates a company culture that values efficiency, rapid prototyping, and potentially a "T-shaped" designer profile.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• A robust portfolio showcasing end-to-end design projects for complex B2B SaaS applications, detailing your process from problem definition to final solution.

• Case studies that clearly articulate your product thinking, problem-solving approach, and how you balanced user value, technical constraints, and business goals.

• Examples demonstrating expertise in interaction design, user flows, and high-fidelity visual design.

• Evidence of your contribution to or creation of design systems and component libraries, particularly within Figma.

Process Documentation:

• Detailed explanations of your design process for key projects, highlighting methodologies used for user research, ideation, prototyping, and testing.

• Clear articulation of how you collaborated with product and engineering teams, including your handoff process and approach to iterating based on feedback.

• Examples of how you've maintained or evolved design systems to ensure scalability and consistency.

• Evidence of your ability to identify and articulate the impact of design decisions on user experience and business outcomes.

📝 Enhancement Note: The portfolio is paramount for this role. The emphasis on end-to-end design, B2B SaaS complexity, and design systems suggests that candidates should prepare to present detailed case studies that go beyond aesthetics, focusing on strategic problem-solving and process rigor.

💵 Compensation & Benefits

Salary Range: For a Senior Product Designer with 3-5 years of experience in Berlin, Germany, the estimated salary range is between €65,000 and €85,000 annually. This estimate considers the cost of living in Berlin, industry benchmarks for B2B SaaS companies, and the specified experience level.

Benefits:

• Remote Work Options: Flexibility to work fully remote within Germany.

• Modern Office in Berlin: Option to work from a modern office located in Berlin Friedrichshain.

• Company and Team Events: Regular social and professional gatherings (both offline and online).

• Competitive Compensation: A salary package commensurate with experience and market standards.

• Permanent Contract: Secure employment with a long-term perspective.

• Modern Work Equipment: Provision of up-to-date tools and technology for optimal performance.

• Professional Development Support: Regular 1-on-1s and an open feedback culture to foster career growth.

• Open Feedback Culture: Encouragement of open communication and continuous improvement.

Working Hours: The standard working hours are approximately 40 hours per week, with flexibility offered, especially for remote employees, to accommodate effective work-life integration and project delivery.

📝 Enhancement Note: The salary range is an estimation based on regional data for similar roles in Berlin. Actual compensation will depend on the candidate's specific experience, skills, and the company's internal compensation structure. The benefits package emphasizes flexibility and professional growth, aligning with modern tech company offerings.

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology, specifically B2B SaaS for the construction industry, focusing on tenders and procurement processes. Cosuno is leveraging AI to analyze price data and improve bid accuracy and efficiency.

Company Size: The provided data does not specify company size, but the mention of "fast-growing tech startup" and "international team" suggests a dynamic environment that is likely scaling. For a Senior Product Designer role, it's reasonable to assume a team size where collaboration is key but individual impact is also significant.

Founded: Cosuno's founding date is not explicitly stated, but the description as a "fast-growing tech startup" implies a relatively recent establishment, likely within the last 5-10 years, focusing on innovation and market disruption.

Team Structure:

• The design team likely includes at least one other Product Designer, suggesting a collaborative structure where senior members mentor and work alongside peers.

• Close collaboration with Product Managers and Engineers is a core element, indicating a cross-functional team approach to product development.

Methodology:

• Data-Driven Product Development: Cosuno utilizes AI to analyze vast amounts of price data, implying a strong emphasis on data-informed decision-making in product strategy and design.

• Agile/Lean Principles: The emphasis on "delivering solutions that are technically feasible and ship fast" suggests an agile or lean development methodology, where iterative development and rapid deployment are prioritized.

• User-Centric Design: While leveraging technology, the core mission is to solve real-life problems for users in the construction industry, indicating a commitment to user-centered design processes.

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

📝 Enhancement Note: The company's focus on AI and revolutionizing a traditional industry like construction suggests a forward-thinking and innovative culture. The "fast-growing startup" environment implies opportunities for significant impact and potential for rapid career advancement, alongside the inherent challenges of scaling.

📈 Career & Growth Analysis

Operations Career Level: This role is at a Senior Product Designer level. This signifies a designer who is not only proficient in executing design tasks but also capable of strategic thinking, influencing product direction, and mentoring junior team members. They are expected to take significant ownership of complex problem spaces and drive design initiatives from inception to launch with minimal supervision. In a B2B SaaS context, this often means navigating intricate user workflows and enterprise-level requirements.

Reporting Structure: The Senior Product Designer will likely report to a Design Lead, Head of Product, or potentially a CTO in a smaller startup. They will work in close collaboration with Product Managers and Software Engineers, forming a core product team. This structure facilitates direct impact and clear communication channels.

Operations Impact: As a Senior Product Designer, the individual's impact extends beyond aesthetics. They will directly influence the usability, efficiency, and adoption of Cosuno's platform. By improving the user experience of complex procurement and tendering processes, they will contribute significantly to customer satisfaction, operational efficiency for clients, and ultimately, the company's revenue growth and market position. Their work on design systems also ensures long-term scalability and maintainability of the product's user interface.

Growth Opportunities:

• Design Leadership: Potential to grow into a Lead Product Designer or Design Manager role as the company scales, taking on more strategic responsibilities and managing a design team.

• Specialization: Opportunity to deepen expertise in specific areas of B2B SaaS design, AI-driven product features, or complex enterprise UX.

• Cross-Functional Experience: Gaining deeper insights into product strategy, engineering best practices, and business development through close collaboration.

• Mentorship: Developing leadership skills by guiding and mentoring junior designers.

📝 Enhancement Note: The "Sr." title and the focus on end-to-end ownership clearly indicate a role with significant autonomy and potential for growth. The company's fast-growing nature suggests that opportunities for leadership and specialization will likely emerge as the team expands.

🌐 Work Environment

Office Type: Cosuno offers a choice between fully remote work within Germany or working from their modern office in Berlin Friedrichshain. This provides flexibility and caters to different working style preferences.

Office Location(s): The physical office is located in Berlin Friedrichshain, a vibrant and accessible district known for its tech scene. This location offers opportunities for in-person collaboration and team building.

Workspace Context:

• Collaborative Environment: Whether remote or in-office, the emphasis is on close collaboration with Product and Engineering teams. This implies open communication channels and a culture that values teamwork.

• Tools & Technology: Access to modern work equipment and a Figma-based design system suggests a well-equipped and efficient design workflow.

• Team Interaction: Regular company and team events, both online and offline, foster a sense of community and provide opportunities for informal interaction and networking among colleagues.

Work Schedule: The standard work week is approximately 40 hours. While a core set of working hours may be expected for team synchronization, the remote option and the startup culture generally imply a degree of flexibility, with a focus on results and project delivery rather than strict time-tracking.

📝 Enhancement Note: The dual option of remote or in-office work in Berlin is a significant perk. For operations professionals, this flexibility is often highly valued, allowing for a better work-life balance while maintaining strong team connections through structured events and communication practices.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A review of your application, resume, and portfolio to assess qualifications and fit.

• Portfolio Presentation & Discussion: A session where you present key projects from your portfolio, discussing your process, decisions, and impact. Expect deep dives into your problem-solving approach for B2B SaaS challenges.

• Skills-Based Interview: Technical questions related to Figma, design systems, interaction design, and potentially UX copywriting or prototyping.

• Cross-Functional Interview: Meeting with Product Managers and Engineers to assess collaboration style, communication, and ability to translate concepts into feasible solutions.

• Cultural Fit Interview: Discussion to gauge alignment with Cosuno's values, work ethic, and team dynamics, particularly regarding self-driven work and communication.

Portfolio Review Tips:

• Curate Selectively: Showcase 2-3 of your strongest B2B SaaS projects that best demonstrate end-to-end ownership, complex problem-solving, and design system expertise.

• Tell a Story: For each project, clearly articulate the problem, your role, the process you followed, the challenges you faced, your design decisions, and the measurable outcomes or impact.

• Highlight Process: Emphasize your product thinking and how you arrived at solutions, not just the final UI. Detail your user research, ideation, prototyping, and testing phases.

• Showcase Figma & Design Systems: Explicitly detail your experience with Figma, design systems, and component libraries. If possible, show examples of how you've contributed to or built them.

• Quantify Impact: Whenever possible, use metrics to demonstrate the success of your designs (e.g., improved conversion rates, reduced task completion time, increased user satisfaction).

• Prepare for UI Copy: Be ready to discuss your approach to UX copywriting and potentially present examples of copy you've written.

Challenge Preparation:

• Design Exercise: You may be given a small design challenge or asked to critique an existing interface, focusing on problem-solving, ideation, and justification of design choices.

• Scenario-Based Questions: Be prepared for questions about how you would handle specific design challenges, collaborate with engineers, or make trade-offs in a fast-paced environment.

• Figma Proficiency: Ensure you are comfortable demonstrating your Figma skills and explaining your workflow.

📝 Enhancement Note: The emphasis on portfolio review and case studies is critical. Candidates should prepare to deeply articulate their design process, strategic thinking, and the tangible impact of their work, especially within the context of complex B2B SaaS products.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: The core tool for UI design, prototyping, and design system management. Expert-level proficiency is required.

• Prototyping Tools: While Figma offers strong prototyping capabilities, familiarity with other tools like InVision, or even AI-assisted tools for functional prototypes, is a plus.

Analytics & Reporting:

CRM & Automation:

• Not directly relevant to the Product Designer role, but understanding how the product integrates with CRM or other business systems can provide valuable context for B2B SaaS design.

📝 Enhancement Note: Figma is the central tool mentioned. Candidates should be prepared to demonstrate advanced Figma skills, including collaborative workflows and design system implementation. The mention of AI-assisted coding tools for prototyping suggests an openness to leveraging cutting-edge technology for efficiency.

👥 Team Culture & Values

Operations Values:

• Innovation & Efficiency: Driven by AI and a focus on revolutionizing the construction industry, Cosuno values innovative solutions and efficient processes. This translates to a desire for designers who can find pragmatic, impactful solutions.

• Collaboration & Openness: The company emphasizes an "open-minded, collaborative, and international team" where ideas are valued. This suggests a culture where teamwork, open communication, and constructive feedback are encouraged.

• User-Centricity: Despite the technological focus, the mission is to solve real-life problems for users, indicating that user needs and experience are central to product development.

• Ownership & Drive: The requirement for a "self-driven, outcome-oriented" individual points to a culture that values initiative, accountability, and a proactive approach to problem-solving.

Collaboration Style:

• Cross-functional Integration: Designers work "hand-in-hand" with product and engineering, indicating a tightly integrated team structure where collaboration is constant and essential for success.

• Feedback Exchange: An "open feedback culture with regular 1-on-1s" suggests a commitment to continuous improvement and professional development through open dialogue.

• Knowledge Sharing: In a growing startup, there's likely an implicit value placed on sharing knowledge and best practices to help the team and company scale effectively.

📝 Enhancement Note: The culture appears to balance innovation and efficiency with strong collaboration and user focus. Candidates should be prepared to demonstrate how they embody these values in their work and team interactions.

⚡ Challenges & Growth Opportunities

Challenges:

• Designing for Complexity: B2B SaaS applications, especially in industries like construction, often involve complex workflows, numerous user roles, and intricate data management. Designing intuitive solutions for these can be a significant challenge.

• Balancing Speed and Quality: In a fast-growing startup, there's constant pressure to ship features quickly. The challenge lies in maintaining high design quality and user experience standards while adhering to rapid development cycles.

• Evolving Design System: As the product grows and new features are added, maintaining and scaling a design system effectively requires ongoing effort and strategic thinking.

• Integrating AI Features: Designing user experiences for AI-powered features requires a nuanced understanding of how users interact with and trust AI outputs.

Learning & Development Opportunities:

• Advanced B2B SaaS Design: Deepen expertise in designing for enterprise users, complex workflows, and data-intensive applications.

• Design System Mastery: Become a go-to expert in building, maintaining, and scaling design systems for a growing product.

• AI Product Design: Gain hands-on experience designing user interfaces for AI-driven features and understanding user adoption of AI technologies.

• Mentorship & Leadership: Opportunities to mentor junior designers and potentially take on leadership roles as the team expands.

• Industry Exposure: Understanding the nuances of the construction industry and how technology can solve its unique challenges.

📝 Enhancement Note: The challenges presented are typical for senior roles in scaling SaaS companies. The growth opportunities are directly tied to the company's growth trajectory and its innovative approach to the construction industry.

💡 Interview Preparation

Strategy Questions:

• "Describe your process for taking a complex B2B feature from initial concept to a production-ready design. What are the key decision points and stakeholders involved?" (Focus on your end-to-end ownership and collaboration).

• "How do you balance user needs, technical constraints, and business goals when designing a new feature? Can you provide an example where you had to make difficult trade-offs?" (Highlight your "80/20" product thinking).

• "Walk us through your experience with Figma and design systems. How do you ensure consistency and scalability in your designs?" (Be ready to showcase your Figma skills and design system philosophy).

Company & Culture Questions:

• "Why are you interested in Cosuno and the construction tech industry?" (Research Cosuno's mission, AI focus, and market position).

• "How do you approach working in a fast-paced, collaborative startup environment?" (Emphasize your self-driven nature and teamwork).

Portfolio Presentation Strategy:

• Structure Your Narrative: For each case study, follow a clear story arc: Problem -> Your Role -> Process -> Solution -> Impact/Results.

• Focus on "Why": Explain the reasoning behind your design decisions, not just what you designed.

• Showcase Figma Expertise: Be prepared to share your Figma file or screen share to demonstrate your workflow, component usage, and design system approach.

• Quantify Outcomes: Use data and metrics whenever possible to demonstrate the value and impact of your design work.

• Be Ready for Questions: Anticipate questions about your design choices, alternative solutions you considered, and how you collaborated with engineers and product managers.

📝 Enhancement Note: The interview process will likely be rigorous, focusing on both technical design skills and strategic product thinking. Candidates should prepare to articulate their process, rationale, and impact with specific examples.

📌 Application Steps

To apply for this Sr. Product Designer position:

• Submit your application through the provided link on Ashby.

• Portfolio Customization: Ensure your portfolio prominently features 2-3 strong B2B SaaS case studies that highlight your end-to-end design process, complex problem-solving, and Figma/design system expertise. Tailor your case study descriptions to address Cosuno's focus on efficiency and innovation in construction.

• Resume Optimization: Craft a resume that clearly articulates your 3-5 years of experience in B2B SaaS, emphasizing achievements related to product thinking, collaboration, and the delivery of impactful UX solutions. Use keywords from the job description.

• Interview Preparation: Practice presenting your portfolio case studies, focusing on explaining your "why" and quantifying impact. Prepare answers for behavioral and situational questions related to collaboration, problem-solving, and working in a startup environment.

• Company Research: Thoroughly research Cosuno's platform, mission, and its use of AI in the construction industry. Understand their target audience and the problems they aim to solve. This will help you tailor your responses and demonstrate genuine interest.

⚠️ 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.