Senior Product Designer at Constructor TECH

📍 Job Overview

Job Title: Senior Product Designer

Company: Constructor TECH

Location: Sofia, Bulgaria

Job Type: Full-time

Category: Product Design / UX/UI

Date Posted: September 04, 2026

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

Remote Status: Hybrid (2 days in-office, 3 days remote)

🚀 Role Summary

Drive product innovation and improvement by partnering with business and product teams to identify and solve complex challenges.
Champion a user-centric approach, leveraging deep user research to inform design decisions that resonate with the target audience.
Design, prototype, and validate multiple design solutions, utilizing data to guide iterations and ensure market/business value.
Contribute to and leverage a robust design system, ensuring consistency and scalability through a well-defined component library.
Oversee the end-to-end product design process, from initial concept to pixel-perfect execution, with meticulous attention to detail.
Maintain technological curiosity, exploring emerging tools and technologies to push the boundaries of product design.
Foster strong collaboration with cross-functional teams throughout the product lifecycle to ensure design quality and alignment with company goals.
Continuously refine personal craft and internal design processes by staying abreast of industry trends and innovations.
Effectively communicate design concepts and rationale to stakeholders at all levels, providing constructive feedback to peers.
Investigate and resolve complex product issues by understanding customer-reported problems from the ground up.

📝 Enhancement Note: This role is positioned as a Senior Product Designer, indicating a need for strategic thinking, ownership of significant product areas, and the ability to mentor junior designers. The emphasis on solving "real problems" and "building products to life" suggests a hands-on approach with a focus on tangible business impact. The company's mission in education technology ("EdTech") implies a need for designers who can translate complex educational concepts into intuitive digital experiences.

📈 Primary Responsibilities

Collaborate with Product Managers and Engineering teams to translate business requirements and user needs into intuitive and effective product features and user flows.
Conduct comprehensive user research, including interviews, surveys, and usability testing, to gather insights and validate design hypotheses.
Develop wireframes, user flows, prototypes (low and high fidelity), and detailed mockups to effectively communicate design concepts.
Contribute to the evolution and maintenance of the company's design system, ensuring consistency and scalability across all product touchpoints.
Design and iterate on user interfaces, focusing on usability, accessibility, and aesthetic appeal, ensuring pixel-perfect execution.
Participate in cross-functional team meetings, design reviews, and sprint planning to ensure design alignment and effective communication.
Investigate and analyze customer-reported issues, providing design solutions to complex problems within the existing product framework.
Stay current with industry best practices, emerging design trends, and new technologies to continuously improve design quality and process.
Present design proposals and project outcomes to stakeholders, clearly articulating design rationale and impact.
Actively participate in team knowledge-sharing sessions, mentoring junior designers, and contributing to a culture of continuous improvement.

📝 Enhancement Note: The responsibilities highlight a blend of strategic product thinking and hands-on design execution. The emphasis on "solving real problems," "user-centric approach," and "design and validate" points to a requirement for data-informed design decisions and a strong understanding of the product development lifecycle. The mention of "building with systems in mind" and "advanced Figma skills" underscores the importance of design system proficiency and tool mastery.

🎓 Skills & Qualifications

Education:

Bachelor's or Master's degree in Design, Art, Human-Computer Interaction (HCI), or a related field, OR equivalent practical experience demonstrating a strong foundation in design principles. Experience:
3+ years of dedicated UX/UI or Product Design experience within product-focused companies.
Proven track record of redesigning or significantly improving live product experiences, demonstrating measurable business or market value. Required Skills:
Product Design: Comprehensive understanding of the end-to-end product design process, from research and ideation to prototyping, testing, and implementation.
UX/UI Design: Expertise in creating intuitive, user-friendly, and visually appealing interfaces that align with user needs and business objectives.
Figma Proficiency: Advanced skills in Figma for wireframing, prototyping, high-fidelity design, and collaboration within a design system.
User Research: Ability to conduct and interpret various forms of user research (interviews, surveys, usability testing) to inform design decisions.
Wireframing & Prototyping: Proficiency in creating interactive prototypes at various fidelities to test and communicate design concepts effectively.
Design Systems: Experience contributing to or working with design systems, including component libraries and style guides, to ensure design consistency and scalability.
Cross-functional Collaboration: Demonstrated ability to work effectively with product managers, engineers, and other stakeholders.
Problem-Solving: Strong analytical and problem-solving skills, with the ability to tackle complex product challenges.
English Proficiency: B2 level or higher in written and spoken English, essential for clear communication in a global team.

Preferred Skills:

EdTech/LMS Experience: Familiarity with Learning Management Systems (LMS) or other educational technology products, understanding the unique user needs and design considerations in this space.
Intellectual Curiosity: A genuine interest in the online learning space and a drive to understand its complexities and user behaviors.
Experimental Design Workflows: Experience with "vibe coding" or other experimental design-to-code workflows that bridge design and development.

📝 Enhancement Note: The requirement for "3+ years of UX/UI or Product Design experience in product companies" and a portfolio demonstrating "products you've designed and launched with real market/business value" indicates a need for candidates who have tangible experience and can showcase impact. The B2 English proficiency is a critical requirement for effective communication within the team.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

A comprehensive portfolio showcasing 2-3 significant product design projects, ideally including at least one case study on a product launched with demonstrable market or business value.
Projects should clearly illustrate your role, process, and impact from problem definition through to solution delivery.
Include examples of user research, wireframes, user flows, interactive prototypes, and high-fidelity visual designs.
Demonstrate your ability to work with and contribute to design systems, showcasing component usage and consistency.
Highlight your problem-solving approach and how you navigated challenges to achieve successful outcomes. Process Documentation:
Showcase your understanding of the product development lifecycle and how design integrates at each stage.
Provide examples of how you have used data and user feedback to iterate on designs and improve product performance.
Illustrate your experience with design tools, particularly advanced Figma workflows, including component creation and system management.
Be prepared to discuss your process for collaborating with engineering and product teams to ensure successful implementation of designs.

📝 Enhancement Note: The portfolio requirements are crucial for this role. Candidates must present evidence of successfully launched products and their impact, not just conceptual work. The emphasis on "real market/business value" means portfolio pieces should ideally include metrics or testimonials demonstrating success.

💵 Compensation & Benefits

Salary Range:

Based on industry benchmarks for a Senior Product Designer with 3-5 years of experience in Sofia, Bulgaria, the estimated annual salary range is BGN 75,000 - BGN 110,000. This estimate considers the cost of living in Sofia, the demand for specialized design talent, and the typical compensation structures for tech companies in the region. Benefits:
Choice of work equipment: Provision of necessary tools like laptops and monitors to ensure optimal productivity.
English classes: Monthly allowance of $130 for iTalki or similar platforms to support English language proficiency development.
Flexible schedule: Standard working hours are typically between 09:00/10:00 and 18:00/19:00, with flexibility to accommodate personal needs.
Newborn bonus: A €500 bonus per child to support new parents.
Patent remuneration: Recognition and reward for innovative contributions through patent applications.
Paid leave: Standard paid time off for rest and personal commitments.
Remote work options: Opportunity for fully remote work in locations where Constructor TECH does not have a physical office.
Hybrid work model: For employees in locations with offices, a hybrid arrangement of 2 days in-office and 3 days remote is offered.

Working Hours:

The standard working hours are approximately 40 hours per week, with flexibility expected between 09:00/10:00 and 18:00/19:00 local time, allowing for better work-life integration.

📝 Enhancement Note: The salary range is an estimation based on typical market rates for a Senior Product Designer in Sofia, Bulgaria, considering the specified experience level and the tech industry. The benefits package is comprehensive, with a particular focus on professional development (English classes) and work-life balance (flexible schedule, hybrid/remote options).

🎯 Team & Company Context

🏢 Company Culture

Industry: Technology, specifically Education Technology (EdTech). Constructor TECH leverages machine intelligence and data science to create an all-in-one platform for education and research, aiming to improve access, engagement, and efficiency in digital learning.

Company Size: The company size is not explicitly stated, but the presence of multiple benefits and a structured hybrid/remote work policy suggests a growing organization likely in the startup to scale-up phase, potentially employing between 50-250 individuals.

Founded: The founding date is not provided, but the mission and focus on advanced technologies like machine intelligence indicate a modern, forward-thinking company.

Team Structure:

The Product Design team likely operates within a cross-functional product development structure, working closely with Product Managers, Engineers, and potentially Data Scientists.
Designers are expected to collaborate extensively, with opportunities to present to management and clients, suggesting a degree of autonomy and visibility.
The role involves contributing to and leveraging a design system, indicating that there might be a dedicated design system team or a shared responsibility for its upkeep. Methodology:
Data-Driven Design: The role emphasizes using data to guide design decisions and validate solutions, aligning with a scientific approach to product development.
User-Centricity: A core methodology involves deep dives into user research to understand motivations and behaviors, ensuring solutions meet genuine needs.
Agile/Iterative Development: The mention of "iterate quickly" and "test rigorously" points towards an agile or iterative product development process where design is a continuous part of the cycle.
Systems Thinking: Contributing to and using a design system highlights a focus on scalable, consistent, and maintainable design solutions.

Company Website: https://constructor.tech/

📝 Enhancement Note: Constructor TECH appears to be a mission-driven company focused on leveraging technology to solve critical issues in education. The emphasis on machine intelligence and data science suggests a technically sophisticated environment. The culture likely values innovation, user empathy, and data-informed decision-making.

📈 Career & Growth Analysis

Operations Career Level: This role is classified as a Senior Product Designer. This level implies a strong command of design principles, a proven ability to deliver impactful products, and the capacity to work autonomously on complex projects. Senior designers are expected to contribute to design strategy, mentor junior team members, and influence product direction through their expertise. They often take ownership of significant product areas or features.

Reporting Structure:

While not explicitly stated, a Senior Product Designer typically reports to a Design Lead, Head of Product Design, or potentially a Director of Product/Engineering, depending on the company's organizational structure. They will work closely with Product Managers and Engineering Leads on a day-to-day basis. Operations Impact:
The Senior Product Designer's impact is directly tied to enhancing user experience, driving product adoption, and ultimately contributing to the company's mission of enabling high-quality digital education with greater efficiency. Their work influences user engagement, student success rates, and the overall effectiveness of the educational platform, which in turn drives business growth and market position. Growth Opportunities:
Design Leadership: Potential to grow into a Lead Product Designer or Design Manager role, overseeing a team, setting design strategy, and managing design operations.
Specialization: Opportunity to deepen expertise in specific areas such as UX research, interaction design, design systems, or accessibility within the EdTech domain.
Cross-functional Mobility: With a strong understanding of product strategy and user needs, there could be opportunities to transition into Product Management or related GTM roles, especially within a growing tech company.
Skill Enhancement: Continuous learning through company-provided resources, industry conferences, and challenging project work, focusing on emerging design tools and methodologies.

📝 Enhancement Note: The "Senior" title is key here. It implies the candidate is expected to be a significant contributor, potentially mentoring others, and having a strategic voice in design decisions. The growth opportunities reflect typical career paths for senior designers in tech companies, with options for both individual contribution leadership and people management.

🌐 Work Environment

Office Type: Constructor TECH offers a hybrid work model in locations with offices. This means a blend of in-office collaboration and remote flexibility. The office environment is likely designed to facilitate collaborative work, team meetings, and focused individual tasks.

Office Location(s): The primary listed location is Sofia, Bulgaria. The company may have other offices, as indicated by the "Remote work in locations without our offices" benefit, but Sofia is the specified hub for hybrid work.

Workspace Context:

Collaborative Environment: The hybrid model with 2 days in the office is designed to foster in-person collaboration, team cohesion, and spontaneous idea sharing, crucial for design sprints and problem-solving.
Tools & Technology: Access to modern design tools, particularly Figma, is essential. The company provides choice of work equipment, suggesting a commitment to equipping employees with the necessary technology for high-quality work.
Team Interaction: Opportunities for direct interaction with design peers, product managers, and engineers during office days, promoting alignment and shared understanding. Remote days allow for focused individual work.

Work Schedule:

The work schedule is flexible, generally falling between 09:00/10:00 and 18:00/19:00. This flexibility allows designers to manage their time effectively, balancing focused design work with personal commitments, while still ensuring core overlap for team collaboration.

📝 Enhancement Note: The hybrid model is a significant aspect of the work environment, balancing the benefits of in-person collaboration with the flexibility of remote work. This setup is common in modern tech companies and requires individuals who can self-manage effectively in both settings.

📄 Application & Portfolio Review Process

Interview Process:

Initial Screening: A review of your resume and portfolio by a recruiter or hiring manager to assess qualifications and alignment with the role.
Portfolio Presentation & Discussion: A dedicated session where you present your portfolio, walking through key projects, your design process, and the impact of your work. This is where you'll demonstrate problem-solving skills and user-centric methodologies.
Technical/Design Challenge: You may be given a small design exercise or a case study to solve, focusing on your ability to apply design thinking to a specific problem relevant to Constructor TECH's domain (EdTech).
Cross-functional Interviews: Meetings with potential team members, including Product Managers and Engineers, to assess collaboration style, communication skills, and cultural fit.
Hiring Manager Interview: A final interview with the hiring manager to discuss your career aspirations, leadership potential, and overall fit within the team and company.

Portfolio Review Tips:

Focus on Impact: Clearly articulate the "why" behind your design decisions and the tangible business or user outcomes achieved. Quantify results with metrics whenever possible (e.g., increased conversion rates, reduced task completion time, improved user satisfaction scores).
Showcase Your Process: Detail your approach to user research, ideation, prototyping, testing, and iteration. Explain how you navigated challenges and made trade-offs.
Highlight Figma Proficiency: Demonstrate advanced Figma skills, including design system usage, component creation, and collaborative workflows.
Tell a Story: Structure your case studies as narratives that guide the reviewer through the problem, your solution, and the results.
Tailor to Constructor TECH: If possible, subtly tailor your presentation to align with Constructor TECH's mission in EdTech and their emphasis on data science and machine intelligence.

Challenge Preparation:

Understand the Problem: Thoroughly analyze any design challenge presented. Ask clarifying questions to ensure you understand the constraints and objectives.
Structure Your Approach: Outline your thought process before diving into solutions. Consider user needs, business goals, and technical feasibility.
Communicate Clearly: Articulate your ideas and rationale concisely. Be prepared to present your solution verbally and/or visually.
Embrace Iteration: Show that you can think critically about your own solutions and are open to feedback and refinement.

📝 Enhancement Note: The interview process will heavily rely on the portfolio. Candidates need to be prepared to deeply discuss their past work, demonstrating not just design skills but also strategic thinking, problem-solving abilities, and a data-informed approach. The EdTech context is important to consider when preparing for challenges.

🛠 Tools & Technology Stack

Primary Tools:

Figma: This is explicitly mentioned as essential and requiring advanced skills. It will be used for wireframing, prototyping, high-fidelity design, and collaboration within the design system.
Prototyping Tools: While Figma offers robust prototyping, the company may also use other specialized tools for specific prototyping needs or user testing.
User Research Platforms: Tools for conducting user interviews, surveys, and usability testing (e.g., UserTesting.com, Maze, SurveyMonkey, Typeform).
Design System Management Tools: While often integrated within Figma, there might be specific platforms or documentation tools used for managing design system components and guidelines.

Analytics & Reporting:

Product Analytics Tools: Experience with tools like Google Analytics, Amplitude, Mixpanel, or similar platforms will be valuable for understanding user behavior and measuring the impact of design changes.
Data Visualization Tools: Familiarity with tools that help visualize data and user insights to support design decisions.

CRM & Automation:

While not directly a designer's tool, understanding how design impacts user journeys within CRM and marketing automation platforms (e.g., Salesforce, HubSpot) can be beneficial for context.

📝 Enhancement Note: Figma is the non-negotiable tool for this role. Proficiency here is paramount. An understanding of how design translates into measurable outcomes via analytics tools is also highly valued in data-driven environments like Constructor TECH.

👥 Team Culture & Values

Operations Values:

User-Centricity: A deep commitment to understanding and serving user needs, ensuring that design solutions are empathetic and effective.
Data-Driven Decision Making: Utilizing data and analytics to inform design choices, validate hypotheses, and measure the impact of design initiatives.
Innovation & Curiosity: Encouraging exploration of new technologies and design approaches to push boundaries and solve complex problems in the EdTech space.
Collaboration & Transparency: Fostering an environment where open communication, feedback, and cross-functional teamwork are encouraged and valued.
Efficiency & Scalability: Designing solutions that are not only effective but also scalable and maintainable, often through the use of design systems.

Collaboration Style:

Cross-functional Integration: Designers are expected to work closely with Product Managers, Engineers, and potentially data scientists, acting as a bridge between user needs and technical implementation.
Feedback Culture: An environment that encourages constructive feedback exchange among design peers and with other teams, promoting continuous improvement.
Knowledge Sharing: Encouraging the sharing of best practices, learnings from user research, and insights from design experiments within the team and across the organization.

📝 Enhancement Note: The company's values likely revolve around innovation, user empathy, and a data-driven approach, all crucial for a tech company operating in the EdTech sector. The emphasis on collaboration and transparency is key for effective product development in a hybrid work setting.

⚡ Challenges & Growth Opportunities

Challenges:

Balancing User Needs with Business Objectives: Effectively integrating user needs with the company's mission and business goals to create solutions that are both impactful for users and viable for the business.
Designing for Complex Educational Contexts: Understanding and designing for the diverse needs of students, educators, and institutions within the EdTech landscape, which can involve complex workflows and varying levels of technical proficiency.
Maintaining Design Consistency Across a Growing Platform: Ensuring a cohesive and scalable user experience as the product evolves and new features are introduced, leveraging and contributing to the design system.
Adapting to Emerging Technologies: Staying ahead of the curve with new design tools, methodologies, and technologies, particularly those relevant to AI and data science in education.

Learning & Development Opportunities:

Advanced Design System Training: Opportunities to deepen expertise in building, maintaining, and scaling design systems.
EdTech Industry Insights: Access to resources, conferences, and internal knowledge sharing focused on the evolving EdTech landscape.
Mentorship Programs: Potential to be mentored by senior design leaders or to mentor junior designers, fostering leadership and communication skills.
Experimentation with New Tools: Encouragement to explore and integrate emerging design technologies and workflows, such as AI-assisted design tools or advanced prototyping methods.

📝 Enhancement Note: The primary challenges will revolve around the specific domain of EdTech and the need for a senior-level designer to contribute strategically. The growth opportunities are geared towards enhancing both design craft and leadership potential.

💡 Interview Preparation

Strategy Questions:

"Describe a time you had to balance conflicting user needs with business requirements. How did you approach it, and what was the outcome?" (Focus on your decision-making process, user research, and ability to find compromise.)
"How do you approach user research for a new product feature or a redesign? Can you walk me through a recent example?" (Highlight your methodologies, tools, and how research informed your final design.)
"How do you ensure consistency and scalability in your designs? Discuss your experience with design systems." (Emphasize your understanding of component-based design and contribution to design system evolution.)
"What is your process for validating design solutions before development?" (Detail your testing methods, iteration cycles, and use of data.) Company & Culture Questions:
"What interests you about Constructor TECH's mission in EdTech and our use of machine intelligence?" (Showcase your research into the company and your alignment with their goals.)
"How do you prefer to collaborate with product managers and engineers?" (Discuss your communication style, experience with agile methodologies, and ability to provide clear design specifications.)
"Describe a time you received difficult feedback on your design. How did you handle it?" (Demonstrate your openness to critique and ability to learn from feedback.) Portfolio Presentation Strategy:
Structure is Key: Organize your presentation logically, typically starting with the problem statement, your role, the process undertaken, key design decisions, and the final outcome with measurable results.
Be Concise and Focused: Highlight the most impactful aspects of each project. Avoid getting bogged down in minor details unless specifically asked.
Show, Don't Just Tell: Use visuals (wireframes, prototypes, final UI) effectively to illustrate your points. Walk through interactive prototypes if possible.
Articulate Your "Why": For every decision, explain the rationale behind it, linking it back to user needs, business goals, or data insights.
Prepare for Questions: Anticipate questions about your process, challenges, trade-offs, and the impact of your work.

📝 Enhancement Note: Interview preparation should focus on demonstrating strategic thinking, a user-centered and data-driven approach, and strong collaboration skills, all within the context of Constructor TECH's mission and technology focus.

📌 Application Steps

To apply for this Senior Product Designer position:

Submit your application through the provided link on Greenhouse.
Tailor Your Resume: Highlight your 3+ years of product design experience, specific achievements in launched products, and proficiency in Figma and user research. Quantify your accomplishments with metrics where possible.
Curate Your Portfolio: Select 2-3 of your strongest projects that demonstrate your end-to-end design process, problem-solving skills, and impact on market/business value. Ensure your portfolio clearly showcases your Figma skills and any experience with design systems or EdTech products.
Prepare Your Portfolio Presentation: Practice walking through your selected case studies, focusing on storytelling, articulating your design rationale, and demonstrating measurable outcomes. Be ready to discuss your process in detail.
Research Constructor TECH: Familiarize yourself with their mission, product offerings, and any recent news. Understand their focus on machine intelligence and EdTech to better articulate your interest and how your skills align.

⚠️ 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.

Senior Product Designer