Senior Product Designer

📍 Job Overview

Job Title: Senior Product Designer

Company: Greencastle Digital

Location: Belgrade, Serbia (Hybrid)

Job Type: Full-Time

Category: Product Design / UX/UI Design

Date Posted: 2026-09-18

Experience Level: Senior (5-10 years)

Remote Status: Hybrid

🚀 Role Summary

• Drive the end-to-end design process for digital products, integrating user research, analytics, and competitor insights to inform intuitive and visually polished user experiences.

• Champion evidence-based design methodologies, ensuring every design decision is measurable, impactful, and aligned with business objectives.

• Contribute significantly to the evolution and maintenance of a scalable design system, enhancing consistency, efficiency, and user experience across the product suite.

• Collaborate closely with Product Management, Engineering, and other Design teams to translate complex requirements into elegant, user-centered solutions.

• Present design concepts and research findings effectively to stakeholders, fostering alignment and driving informed decision-making.

📝 Enhancement Note: This role is positioned as a Senior Product Designer, indicating a need for significant autonomy, strategic input, and the ability to mentor junior designers. The emphasis on "research and data-driven approach," "evidence-based decision-making," and "insight-driven design systems" suggests a company culture that values analytical rigor and measurable outcomes in its design process.

📈 Primary Responsibilities

• Conduct comprehensive user research, including interviews, surveys, and contextual inquiries, to uncover user needs, pain points, and behaviors.

• Execute usability testing sessions to validate design hypotheses, identify areas for improvement, and gather actionable feedback.

• Perform in-depth data analysis of user interactions and product performance metrics to derive insights that guide design iterations and strategic product decisions.

• Analyze competitor products and emerging market trends to identify opportunities for differentiation and innovation in UX strategy.

• Translate qualitative and quantitative insights into clear, logical user flows, interaction models, and high-fidelity user interface (UI) designs.

• Develop accessible, visually appealing interfaces with meticulous attention to visual hierarchy, typography, spacing, color theory, and overall aesthetic appeal.

• Actively build, maintain, and evolve a scalable design system, ensuring its adoption and contribution to design consistency and development efficiency.

• Regularly prepare and deliver compelling presentations of design concepts, research findings, and progress updates to stakeholders, product teams, and executive leadership.

• Foster strong collaborative relationships with cross-functional teams, including Product Managers, Engineers, and Marketing, to ensure designs are technically feasible, strategically aligned, and practically implemented.

• Continuously iterate and refine product designs based on a feedback loop that includes user feedback, user testing results, product analytics, stakeholder input, and evolving market insights.

📝 Enhancement Note: The responsibility to "Build and evolve scalable, insight-driven design systems" implies a need for a Senior Designer who can not only use existing design systems but also contribute to their strategic development and governance, ensuring they support product scalability and team efficiency.

🎓 Skills & Qualifications

Education: A Bachelor's degree in Design, Human-Computer Interaction, Psychology, Computer Science, or a related field is often preferred, though equivalent practical experience will be strongly considered.

Experience: A minimum of 5-10 years of proven experience designing digital products end-to-end, with a demonstrable track record of applying research and data-driven methodologies.

Required Skills:

• Proven experience in end-to-end digital product design, from ideation through to launch and iteration, with a strong emphasis on research and data-driven approaches.

• Proficient in conducting user research methodologies (e.g., interviews, surveys, contextual inquiry) and usability testing.

• Strong analytical skills for interpreting quantitative data (e.g., analytics, A/B test results) and qualitative feedback to inform design decisions.

• Expertise in interaction design principles, user-centered design (UCD), and evidence-based decision-making to create intuitive user experiences.

• Experience working effectively within agile development environments and cross-functional product teams.

• Exceptional UI design skills, including a deep understanding of typography, layout, visual hierarchy, color theory, and accessibility standards (e.g., WCAG).

• Experience building, contributing to, or scaling design systems to ensure consistency and efficiency across multiple products.

• Expert proficiency in Figma for wireframing, prototyping, and high-fidelity UI design.

• Demonstrated ability to confidently present research-backed design decisions and rationale to diverse stakeholder groups. Preferred Skills:

• Experience with advanced prototyping tools beyond Figma for complex interactions or animations.

• Familiarity with front-end development principles (HTML, CSS, JavaScript) to better understand technical constraints and opportunities.

• Experience in information architecture and user journey mapping.

• A strong understanding of user psychology and behavioral economics.

• Familiarity with A/B testing frameworks and conversion rate optimization (CRO) principles.

• Experience mentoring junior designers or leading design initiatives.

📝 Enhancement Note: The explicit mention of "Expert in Figma" and "confident presenting research-backed design decisions" highlights the critical importance of these two skills. Candidates should be prepared to showcase their Figma proficiency and articulate the strategic rationale behind their design choices, backed by data.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• End-to-End Product Design Case Studies: Showcase 2-3 comprehensive case studies detailing your involvement in the entire product design lifecycle. Each case study should clearly articulate the problem, your research process, design solutions, iterations, and the final outcome or impact.

• Research & Insight Integration: Demonstrate how you leveraged user research, data analysis, and competitor insights to inform your design decisions within your case studies. Highlight specific findings and how they directly influenced your design direction.

• High-Quality UI Design: Include examples of polished, well-crafted UI designs that exhibit strong visual design principles, attention to detail, and adherence to accessibility standards.

• Design System Contributions: Provide examples of your work on design systems, whether it's creating new components, documenting guidelines, or contributing to the overall structure and scalability of a system. This could include style guides, component libraries, or pattern inventories.

• Collaboration & Influence: Illustrate instances where you effectively collaborated with product managers, engineers, and other stakeholders, demonstrating your ability to influence product direction through design and research.

Process Documentation:

• Workflow Design & Optimization: Candidates are expected to detail their process for mapping out user journeys, defining interaction models, and optimizing workflows to enhance user efficiency and satisfaction.

• System Implementation & Governance: Showcase how you've contributed to or managed the implementation and governance of design systems, ensuring consistency, scalability, and adherence to established standards.

• Measurement & Performance Analysis: Explain your methods for measuring the success of design implementations, using metrics derived from user feedback, analytics, and business KPIs.

📝 Enhancement Note: The portfolio requirements are heavily focused on demonstrating a data-driven and research-informed design process. Candidates should prioritize case studies that clearly articulate the "why" behind their design decisions, supported by evidence, and showcase their ability to contribute to scalable design systems.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for Senior Product Designers with 5-10 years of experience in hybrid roles in Belgrade, Serbia, the estimated annual salary range is €35,000 - €55,000 (gross). This estimate considers the cost of living in Belgrade and the typical compensation for specialized tech roles in the region.

Benefits:

• Hybrid Work Model: Enjoy a balanced work environment with the flexibility of working from home and in the office.

• Professional Development: Access to training, workshops, conferences, and opportunities for continuous learning in design and technology.

• Health & Wellness: Comprehensive health insurance coverage and potentially wellness programs.

• Generous Paid Time Off: Ample vacation days, public holidays, and sick leave.

• Modern Office Environment: A well-equipped and collaborative workspace in Belgrade.

• Team Events & Socials: Opportunities to connect with colleagues and build team camaraderie.

• Potential for Stock Options/Bonuses: Depending on company performance and individual contribution.

Working Hours: The standard working hours are approximately 40 hours per week, with flexibility often afforded to accommodate personal needs and project deadlines, consistent with hybrid work arrangements.

📝 Enhancement Note: Salary ranges are estimates for the Belgrade, Serbia region for a Senior Product Designer role with 5-10 years of experience. Actual compensation will depend on the candidate's specific qualifications, experience, and the company's compensation strategy. Research for this estimate involved reviewing regional tech salary data and cost of living indices.

🎯 Team & Company Context

🏢 Company Culture

Industry: Greencastle Digital operates within the Digital Technology and Software Development sector, likely focusing on creating innovative digital products and solutions for clients or their own portfolio. Their emphasis on data-driven design suggests a sophisticated, forward-thinking approach to product development.

Company Size: Greencastle Digital is likely a medium-sized to growing company, indicated by the need for a Senior Product Designer and the mention of a design system's evolution. This size often offers a good balance between established processes and opportunities for individual impact.

Founded: [Company Founded Date - Placeholder as not provided] The founding date, if available, would provide context on the company's maturity and established culture.

Team Structure:

• Design Team: The role implies the existence of a design team, likely comprising other designers (potentially junior and/or specialized roles), with this Senior Designer taking a lead or significant individual contributor role.

• Cross-functional Collaboration: Close collaboration is expected with Product Management and Engineering teams, suggesting a matrixed or agile team structure where designers are embedded within product squads.

• Reporting: The Senior Product Designer likely reports into a Head of Design, Design Lead, or a senior Product Management role, depending on the organizational structure.

Methodology:

• Data-Informed Design: A core methodology is the systematic use of user research, analytics, and A/B testing to validate design decisions and measure impact.

• Agile Development: Design processes are integrated within agile sprints, emphasizing iterative development, continuous feedback, and rapid adaptation.

• Design System Governance: A structured approach to developing and maintaining a design system to ensure scalability, consistency, and efficiency across product development.

Company Website: https://greencastledigital.teamtailor.com

📝 Enhancement Note: The "Hybrid - Belgrade" location suggests a physical presence in Belgrade, with employees expected to come into the office for a portion of the week. This allows for in-person collaboration while retaining remote flexibility.

📈 Career & Growth Analysis

Operations Career Level: This is a Senior-level individual contributor role. It signifies a high degree of autonomy, expected leadership in design thinking, and the capability to influence product strategy. Senior designers are typically expected to mentor junior team members and drive best practices.

Reporting Structure: The Senior Product Designer will likely report to a Design Manager, Head of Design, or a Director of Product. They will work closely with Product Managers and Engineering Leads within specific product teams.

Operations Impact: The role directly impacts product success by ensuring user-centricity, usability, and aesthetic appeal, which in turn drives user adoption, engagement, retention, and ultimately, business revenue. The emphasis on measurable outcomes means the design's impact will be quantifiable.

Growth Opportunities:

• Leadership Development: Potential to grow into a Design Lead or Managerial role, overseeing a team of designers and setting design strategy for product areas.

• Specialization: Opportunity to deepen expertise in specific areas such as user research, interaction design, design systems, or accessibility.

• Strategic Influence: Increased involvement in product strategy, roadmap planning, and business decision-making as design's impact becomes more recognized and quantified.

• Mentorship: Formal or informal opportunities to mentor junior designers, sharing expertise and guiding their career development.

📝 Enhancement Note: The "Senior" title suggests that candidates should be prepared to discuss not only their individual contributions but also their experience in guiding others and influencing team processes. Growth is likely to come from increased strategic responsibility and leadership.

🌐 Work Environment

Office Type: Hybrid - This indicates a mix of remote work and in-office presence. The office in Belgrade will serve as a central hub for collaboration, team meetings, and focused work.

Office Location(s): Bulevar Milutina Milankovića 1, Belgrade, Serbia. This location is likely in a business district, offering accessibility via public transport and proximity to amenities.

Workspace Context:

• Collaborative Spaces: The office is expected to feature collaborative areas designed to facilitate brainstorming, team discussions, and cross-functional meetings.

• Tools & Technology: Access to modern design software (Figma), hardware, and reliable internet connectivity will be standard. The company likely provides necessary equipment.

• Team Interaction: Regular opportunities for face-to-face interaction with design, product, and engineering colleagues, fostering a strong sense of team cohesion and shared purpose.

Work Schedule: The standard work schedule is approximately 40 hours per week. The hybrid model allows for flexibility in structuring the work week, balancing remote days with in-office collaboration days.

📝 Enhancement Note: The hybrid nature implies a need for strong self-management and communication skills, both for remote work and for effective collaboration when in the office.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A brief call with HR or a recruiter to assess basic qualifications, cultural fit, and salary expectations.

• Portfolio Review & Design Challenge: A session where candidates present their portfolio, discussing key case studies and answering questions about their design process, research methodologies, and problem-solving approaches. A practical design challenge may be given, either take-home or live, to assess specific skills.

• Team/Hiring Manager Interviews: In-depth discussions with the hiring manager and potential design/product colleagues to evaluate technical skills, strategic thinking, collaboration style, and cultural alignment.

• Final Interview: Potentially with a senior leader (e.g., Head of Product, CTO) to confirm overall fit and discuss long-term vision.

Portfolio Review Tips:

• Curate for Impact: Select 2-3 of your strongest, most relevant case studies that clearly demonstrate your end-to-end design process, research integration, and impact.

• Tell a Story: Structure each case study as a narrative, clearly outlining the problem, your process, the solutions you devised, the rationale behind them (supported by data/research), and the measurable outcomes.

• Highlight Data & Research: Explicitly call out how user research and data analysis informed your decisions. Use visuals to support your points, such as user journey maps, personas, research findings summaries, and analytics dashboards.

• Showcase Figma Proficiency: Be prepared to walk through your Figma files, demonstrating your understanding of components, variants, prototyping, and design system integration.

• Emphasize Collaboration: Discuss how you worked with engineers and product managers, addressing challenges and finding solutions together.

Challenge Preparation:

• Understand the Brief: Carefully read and understand any design challenge prompt. Ask clarifying questions if needed.

• Prioritize: Focus on demonstrating your core skills (research, problem-solving, UI, interaction design) within the given constraints and time limit.

• Communicate Your Process: Even if you don't complete everything, clearly articulate your thought process, assumptions, and next steps.

• Focus on Rationale: Be ready to explain why you made specific design choices, referencing user needs, data, or design principles.

📝 Enhancement Note: The emphasis on "research-backed design decisions" and "data analysis" in the responsibilities and portfolio expectations means candidates must be prepared to deeply articulate the "why" behind their design choices, backed by evidence.

🛠 Tools & Technology Stack

Primary Tools:

• Figma: This is explicitly stated as a required expertise. Candidates should be proficient in all aspects of Figma, including advanced prototyping, component creation, collaboration features, and potentially auto-layout for responsive design.

• Prototyping Tools: While Figma is primary, familiarity with other prototyping tools (e.g., Adobe XD, Sketch, InVision) might be beneficial.

• User Research Platforms: Experience with tools for conducting surveys (e.g., SurveyMonkey, Typeform), interviews, and usability testing (e.g., UserTesting.com, Lookback).

Analytics & Reporting:

• Product Analytics: Familiarity with tools like Google Analytics, Mixpanel, Amplitude, or similar platforms to track user behavior and product performance.

• Data Visualization: Ability to interpret data presented in dashboards or reports, and potentially create simple visualizations to support design rationale.

CRM & Automation:

• While not directly mentioned, a basic understanding of CRM systems (e.g., Salesforce, HubSpot) and marketing automation tools can be helpful for understanding the broader customer journey and business context.

📝 Enhancement Note: Proficiency in Figma is non-negotiable. Candidates should be ready to demonstrate their mastery of the tool and how it facilitates their design process, including design system integration and collaboration.

👥 Team Culture & Values

Operations Values:

• Data-Driven Decision Making: A strong emphasis on using research, analytics, and user feedback to guide all design choices, ensuring that designs are not just aesthetically pleasing but also effective and measurable.

• User-Centricity: A deep commitment to understanding and advocating for the user, ensuring that their needs and experiences are at the forefront of product development.

• Collaboration & Transparency: Fostering an environment where cross-functional teams work together openly, sharing insights, feedback, and progress to achieve common goals.

• Continuous Improvement: A mindset of ongoing learning, iteration, and refinement, both in product design and in personal professional development.

• Excellence & Craftsmanship: A dedication to producing high-quality, polished, and accessible designs that meet rigorous standards.

Collaboration Style:

• Cross-functional Integration: Designers are expected to be active participants within product teams, working hand-in-hand with Product Managers and Engineers throughout the development lifecycle.

• Open Feedback Culture: A willingness to give and receive constructive feedback on designs and processes to drive collective improvement.

• Knowledge Sharing: Encouraging the sharing of insights, best practices, and learnings across the design team and with other departments.

📝 Enhancement Note: The values suggest a company that is professional, analytical, and collaborative, with a strong focus on delivering high-quality, user-centered products through efficient processes.

⚡ Challenges & Growth Opportunities

Challenges:

• Balancing User Needs with Business Goals: Effectively mediating between user desires, technical feasibility, and business objectives to create solutions that satisfy all stakeholders.

• Evolving Design Systems: Keeping pace with the demands of a growing product suite and ensuring the design system remains scalable, maintainable, and adopted by development teams.

• Data Interpretation: Translating complex or ambiguous data into clear, actionable design insights.

• Stakeholder Management: Navigating differing opinions and priorities among stakeholders to gain alignment on design direction.

Learning & Development Opportunities:

• Advanced Design Techniques: Opportunities to explore and implement cutting-edge design methodologies, interaction patterns, and visual design trends.

• Design Leadership: Potential to take on more strategic responsibilities, mentor junior designers, and influence the overall design direction of the company.

• Cross-functional Acumen: Deepening understanding of product management, engineering processes, and business strategy through close collaboration.

• Industry Exposure: Attending design conferences, workshops, and online courses to stay current with industry best practices and emerging technologies.

📝 Enhancement Note: This role presents a significant opportunity for a designer looking to deepen their impact within a growing tech company, with clear paths for both technical and leadership growth.

💡 Interview Preparation

Strategy Questions:

• "Describe a time you used user research or data analysis to significantly change the direction of a product design. What was the insight, and what was the outcome?"

• "How do you approach balancing the needs of different user segments or stakeholder priorities when they conflict?"

• "Walk me through your process for designing a new feature from concept to implementation. How do you ensure it's evidence-based?"

• "How do you contribute to or manage a design system? What are the key principles for making a design system scalable and effective?" Company & Culture Questions:

• "What interests you about Greencastle Digital and this specific role?"

• "How do you ensure your design decisions align with business objectives?"

• "Describe your ideal collaboration dynamic with Product Managers and Engineers."

• "How do you handle constructive criticism or feedback on your designs?" Portfolio Presentation Strategy:

• Start with the Problem: Clearly articulate the business or user problem you were trying to solve.

• Showcase Your Process: Detail your research methods, ideation, wireframing, prototyping, and iteration stages. Use visuals to illustrate each step.

• Justify Decisions with Data/Research: For key design choices, explain the rationale, referencing specific user insights, data points, or usability findings.

• Highlight Impact: Quantify the results of your design work whenever possible (e.g., increased conversion rates, improved task completion times, higher user satisfaction scores).

• Demonstrate Figma Skills: Be ready to navigate your Figma files to show your interaction design, component usage, and system integration.

📝 Enhancement Note: Be prepared to discuss not just what you designed, but why you designed it that way, with a strong emphasis on data, research, and measurable outcomes.

📌 Application Steps

To apply for this Senior Product Designer position:

• Submit your application through the provided link on the Greencastle Digital Teamtailor portal.

• Tailor your Resume: Highlight your experience with user research, data analysis, end-to-end product design, Figma proficiency, and design system contributions. Use keywords from the job description.

• Curate your Portfolio: Select your strongest case studies that demonstrate your research-driven approach, UI design skills, and collaboration experience. Ensure it's easily navigable and clearly showcases your process and impact.

• Prepare your Presentation: Practice walking through your portfolio, focusing on articulating the problem, your process, data-informed decisions, and measurable outcomes. Be ready to discuss your Figma workflow.

• Research Greencastle Digital: Understand their business, products, and any publicly available information about their design philosophy or culture to demonstrate genuine interest and alignment.

⚠️ 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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