Senior Product Designer

📍 Job Overview

Job Title: Senior Product Designer

Company: Greencastle Digital

Location: Belgrade, Serbia

Job Type: Full-Time

Category: Product Design / UX/UI Design

Date Posted: March 16, 2026

Experience Level: 5-10 Years

Remote Status: Hybrid

🚀 Role Summary

• Drive the end-to-end design process for digital products, leveraging user research, analytics, and competitor insights to create intuitive and visually appealing user experiences.

• Lead the strategic evolution and implementation of scalable design systems to ensure product consistency, efficiency, and enhanced user journeys.

• Collaborate closely with Product Managers, Engineers, and other stakeholders to translate complex data and insights into actionable design decisions and elegant solutions.

• Champion a data-driven design methodology, ensuring all design choices are evidence-based, measurable, and demonstrably impactful on user engagement and business objectives.

• Present design concepts, research findings, and strategic recommendations to stakeholders and the wider business, fostering alignment and buy-in.

📝 Enhancement Note: While the title is "Senior Product Designer," the responsibilities heavily emphasize a data-driven and research-focused approach, aligning closely with the principles of Revenue Operations and Sales Operations roles that rely on quantitative insights to optimize processes and drive business outcomes. The emphasis on analytics, user research, and measurable impact suggests this role requires a strategic mindset focused on operational efficiency and user adoption, key tenets in the operations domain.

📈 Primary Responsibilities

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

• Execute usability testing sessions to identify design flaws and gather feedback for iterative improvements, ensuring a user-centered design approach.

• Analyze quantitative data from product analytics tools (e.g., user engagement metrics, conversion rates) to inform design hypotheses and validate design solutions.

• Perform thorough competitor analysis to identify market trends, best practices, and opportunities for product differentiation and innovation.

• Develop clear and detailed user flows, wireframes, interaction models, and high-fidelity mockups that effectively communicate design intent and functionality.

• Design accessible, polished, and consistent user interfaces (UI) with meticulous attention to visual hierarchy, typography, spacing, color theory, and accessibility standards (WCAG).

• Build, maintain, and evolve a scalable design system, ensuring consistency in UI components, patterns, and guidelines across all digital products.

• Present design strategies, research findings, and rationale behind design decisions to cross-functional teams, product leadership, and other key stakeholders.

• Foster strong collaborative relationships with Engineering teams to ensure feasibility and seamless implementation of designs, providing clear design specifications and support.

• Continuously iterate on designs based on user feedback, A/B testing results, product analytics, stakeholder input, and evolving market insights to optimize product performance.

📝 Enhancement Note: The responsibilities listed clearly indicate a need for analytical rigor and a systematic approach to design, mirroring the operational focus on process optimization and data-driven decision-making. The emphasis on "evidence-based, measurable and impactful" design choices is a direct parallel to the objectives of operations roles in demonstrating ROI and driving efficiency.

🎓 Skills & Qualifications

Education:

Experience:

• 5-10 years of proven experience in digital product design, with a strong portfolio showcasing end-to-end design processes and successful product launches.

• Demonstrated experience in applying research and data-driven methodologies to inform and validate design decisions.

Required Skills:

• Expert proficiency in user research methodologies (qualitative and quantitative).

• Strong skills in usability testing and analysis of findings.

• Expertise in interaction design principles and creating intuitive user flows.

• Advanced UI design capabilities with a keen eye for detail, aesthetics, and brand consistency.

• Deep understanding of accessibility standards (WCAG) and best practices for inclusive design.

• Experience in building, managing, and evolving design systems for scalability and consistency.

• Proficient in presenting design concepts and research findings to diverse audiences, including executive stakeholders.

• Excellent communication, collaboration, and interpersonal skills.

Preferred Skills:

• Experience with data analysis tools (e.g., Google Analytics, Mixpanel, Amplitude) to derive actionable insights.

• Familiarity with front-end development principles (HTML, CSS, JavaScript) to better collaborate with engineering teams.

• Experience in mentoring junior designers and fostering a collaborative design culture.

• Knowledge of UX strategy frameworks and product roadmapping.

📝 Enhancement Note: The required skills, particularly "Data Analysis," "Competitor Analysis," "UX Strategy," and "Design Systems," are highly relevant to operations professionals who often leverage similar analytical and strategic frameworks to optimize business processes and systems. The emphasis on "evidence-based, measurable and impactful" design mirrors the core objectives of operations roles in driving efficiency and demonstrating ROI.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• End-to-End Case Studies: Present at least 2-3 comprehensive case studies demonstrating your full product design process from problem definition to final solution, highlighting your role and impact.

• Research & Data Integration: Showcase specific examples where user research, analytics, and competitor insights directly influenced your design decisions and led to measurable improvements.

• UI Design Excellence: Include high-fidelity mockups and prototypes that exemplify your strong UI design skills, attention to detail, and understanding of visual hierarchy, typography, and accessibility.

• Design System Contribution: Provide examples of your involvement in creating, evolving, or maintaining a design system, demonstrating your ability to drive consistency and scalability.

• Collaboration & Influence: Illustrate instances where you successfully collaborated with product and engineering teams, influencing outcomes and ensuring effective implementation of designs.

Process Documentation:

• Clearly articulate the design process followed within each case study, detailing research methodologies, ideation techniques, iteration cycles, and validation methods.

• Document the rationale behind key design decisions, linking them to specific user insights, data points, or strategic objectives.

• Showcase your approach to creating and maintaining design documentation, including style guides, component libraries, and interaction specifications.

📝 Enhancement Note: The portfolio requirements are highly specific to showcasing a structured, data-informed, and iterative design process, directly aligning with the expectations for operations professionals to demonstrate their ability to analyze, optimize, and implement processes with measurable results. The focus on "research-driven UX," "data-informed UI," and "scalable UI work" mirrors the operational need for efficiency and robust system design.

💵 Compensation & Benefits

Salary Range:

Benefits:

• Health Insurance: Comprehensive medical, dental, and vision insurance plans.

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

• Professional Development: Budget for conferences, workshops, online courses, and certifications to support continuous learning in design and related fields.

• Flexible Work Arrangement: Hybrid work model allowing for a balance between in-office collaboration and remote flexibility.

• Team Events & Socials: Regular team-building activities and social gatherings to foster a strong company culture.

• Modern Workspace: Access to a well-equipped, collaborative office space in Belgrade.

Working Hours:

• Standard full-time working hours are approximately 40 hours per week. The hybrid arrangement offers flexibility in scheduling, with core collaboration hours expected for team meetings and cross-functional work.

📝 Enhancement Note: The salary range is estimated based on general market data for Senior Product Designer roles in Eastern Europe, specifically Belgrade, Serbia, and adjusted for the specified experience level. This is a professional estimate and actual compensation may vary. The benefits are typical for tech companies in the region and aim to attract and retain talent.

🎯 Team & Company Context

🏢 Company Culture

Industry: Digital Product Development & Design Services

Company Size: Greencastle Digital is a growing company, likely between 50-200 employees, suggesting a dynamic environment where individual contributions are highly visible and impactful. This size often allows for a balance between established processes and agile adaptability.

Founded: While the founding date is not provided, the company's presence on a modern recruitment platform like Teamtailor suggests it is likely a contemporary organization, possibly founded within the last 5-15 years, focused on leveraging current technologies and methodologies.

Team Structure:

• The design team likely consists of Product Designers, UX Researchers, and UI Designers, potentially led by a Design Lead or Head of Design.

• This Senior Product Designer will be a key player within a cross-functional pod or squad, working directly with Product Managers, Software Engineers, and potentially QA testers.

Methodology:

• The company emphasizes a research- and data-driven approach to design, suggesting a strong reliance on analytics, user feedback, and iterative testing.

• Agile methodologies are likely employed, promoting flexibility, rapid prototyping, and continuous delivery.

• Design thinking principles are probably integrated into the workflow, focusing on empathy, ideation, prototyping, and testing.

Company Website: https://greencastledigital.com

📝 Enhancement Note: The company's focus on digital product development and its likely modern operational structure suggest an environment that values efficiency, data-informed strategies, and continuous improvement—principles central to revenue and sales operations.

📈 Career & Growth Analysis

Operations Career Level: This role represents a senior individual contributor position within the design function. It requires not only strong execution skills but also strategic thinking, leadership in design system evolution, and the ability to influence cross-functional teams. This level is crucial for driving operational excellence within the product development lifecycle.

Reporting Structure: The Senior Product Designer will likely report to a Design Lead, Head of Design, or potentially a Director of Product, depending on the company’s organizational structure. They will work closely with Product Managers and Engineering Leads within their assigned product teams.

Operations Impact: The impact of this role is significant, directly influencing product usability, user adoption, customer satisfaction, and ultimately, business metrics like conversion rates, retention, and revenue. By ensuring designs are data-informed and scalable, this role contributes to operational efficiency and long-term product success.

Growth Opportunities:

• Design Leadership: Potential to grow into a Design Lead or Manager role, overseeing a team of designers and shaping design strategy.

• Specialization: Opportunity to deepen expertise in specific areas such as UX Research, Design Systems, or Accessibility.

• Product Strategy: Transition into a Product Owner or Product Strategist role, leveraging design expertise to drive product vision and roadmap.

• Cross-functional Advancement: Develop strong business acumen and potentially move into broader product management or operations roles within the company.

📝 Enhancement Note: The growth trajectory for this role emphasizes strategic influence and cross-functional impact, mirroring the career progression paths for successful operations professionals who move from execution to strategic leadership.

🌐 Work Environment

Office Type: The company offers a hybrid work model, indicating a blend of remote work flexibility and in-office collaboration. The office environment is likely designed to be modern, collaborative, and conducive to focused work and team interaction.

Office Location(s): The primary office is located at Bulevar Milutina Milankovića 1, Belgrade, Serbia. This location is likely in a business district, offering accessibility and proximity to other amenities.

Workspace Context:

• Collaborative Spaces: The office will feature meeting rooms, breakout areas, and open-plan zones designed to encourage teamwork, brainstorming, and cross-functional communication.

• Tools & Technology: Employees will have access to modern design software, high-performance workstations, and reliable internet connectivity to support their work.

• Team Interaction: Regular opportunities for informal and formal interaction with design peers, product managers, engineers, and other colleagues, fostering a sense of community and shared purpose.

Work Schedule: A standard 40-hour work week is expected, with flexibility in daily start and end times. Core hours will be established to ensure team alignment and facilitate collaborative sessions, particularly for hybrid arrangements.

📝 Enhancement Note: The hybrid model and emphasis on collaborative spaces are increasingly common in tech organizations, reflecting a focus on both individual productivity and team synergy, which is crucial for efficient operations.

📄 Application & Portfolio Review Process

Interview Process:

• Initial Screening: A brief call with an HR representative or recruiter to assess basic qualifications, cultural fit, and interest in the role.

• Portfolio Review & Technical Interview: A deep dive into your portfolio with the hiring manager or senior design team members. Expect to walk through 1-2 key projects, discussing your process, rationale, and impact. This stage will assess your design skills, research methodology, and ability to articulate complex design decisions.

• Cross-functional Interview: An interview with Product Management and Engineering representatives to evaluate your collaboration skills, understanding of product development lifecycles, and ability to work effectively in a cross-functional team.

• Take-Home Assignment or Design Challenge: You may be given a design challenge to solve within a specified timeframe, simulating a real-world problem. This assesses your problem-solving approach, design thinking, and execution under pressure.

• Final Interview: Possibly with a senior leader (e.g., Head of Product, CTO) to discuss overall strategic alignment, leadership potential, and final fit.

Portfolio Review Tips:

• Curate Strategically: Select 3-4 of your strongest projects that best