Mariusz Ciesla
Principal Product Designer
About
Product designer and curious generalist with over a decade of experience. I specialize in design systems, user experience research, and collaborative design processes. I've worked with product teams, agencies, and consulted for large corporates, always focusing on continuous improvement and purpose-driven design.
Experience
Principal Product Designer
LILT
Focused on exploring AI tooling capabilities and building user-centered design solutions that bridge human creativity with AI efficiency. Leading strategic design initiatives to enhance product experiences through innovative AI-powered workflows.
- AI Tooling Innovation: Exploring and implementing cutting-edge AI tools to enhance design workflows and product development velocity
- User-Centered Solutions: Building intuitive design solutions that prioritize user needs while leveraging AI capabilities for enhanced experiences
- Efficient Design Systems: Creating scalable design systems and processes that maximize impact while minimizing complexity
- Strategic Design Leadership: Leading product design strategy with focus on AI integration and human-centered innovation
- Cross-functional Collaboration: Working closely with engineering and product teams to deliver cohesive AI-enhanced user experiences
Senior Manager, Product & Design
LILT
Led cross-functional Product & Design teams to accelerate delivery, adoption, and customer impact for the AI-powered translation platform.
- Team Leadership: Led cross-functional Product & Design teams to accelerate delivery, adoption, and customer impact
- Brand & Design System Ownership: Owned brand, visual identity, and Design System, ensuring global consistency and market differentiation
- Process Optimization: Streamlined internal & partner collaboration, cutting project turnaround times while elevating quality
- Strategic Prototyping: Designed and shipped high-impact prototypes enabling rapid iteration and early market validation
- Research Leadership: Directed user research to inform strategic product decisions and boost retention
- AI Innovation: Pioneered AI-driven design workflows (Cursor, Figma MCP), increasing design velocity and reducing engineering bottlenecks
Senior Product Designer
LILT
Led design initiatives across multiple product areas for the AI-powered translation platform.
- Design System Leadership: Built cross-functional design system (Figma + Storybook + docs) that aligned teams and reduced UI-related issues to near-zero
- Workflow Design: Designed complex workflows that simplified project lifecycles without sacrificing power for expert users
- AI Agent UX: Led design for AI-powered translation agent, focusing on trust, transparency, and collaborative human-AI workflows
- Product Strategy: Collaborated on product roadmap and user research initiatives across multiple product areas
Product Designer & Consultant
Freelance & Agencies
Worked with various product teams, agencies, and consulted for large corporates across different industries.
- Cross-industry Experience: Delivered design solutions for fintech, e-commerce, media, and enterprise software
- Agency Collaboration: Partnered with design agencies on large-scale digital transformation projects
- Corporate Consulting: Provided UX strategy and design system guidance for enterprise clients
- Team Integration: Embedded with product teams to improve design processes and collaboration
Head of Design
anynines
Created and maintained coherent style guides and design systems across different teams, while collaborating with Marketing on growth initiatives and experimentation frameworks.
- Design System Leadership: Created and maintained coherent style guides and design systems across multiple product teams
- Cross-team Collaboration: Ensured design consistency and standards across different departments and initiatives
- Growth Marketing: Worked closely with Marketing team on new growth initiatives and strategic experiments
- Experimentation Framework: Developed and implemented systematic approaches to testing and iterating on growth strategies
Co-founder & Product Designer
Lifetramp
Co-founded and led product design for a mentorship marketplace that let people "test-drive" careers for a day.
- End-to-end Product Leadership: From hypothesis to launch, scaling to 10K+ users, and eventual wind-down
- Strategic Experiments: Designed and ran concierge MVP, monetization models, and internationalization efforts
- Brand & Product Design: Created complete brand identity, user experience, and front-end development
- Media Partnership: Collaborated on 2-season TV documentary series with Planete+ showcasing user journeys
- Global Impact: Achieved global press coverage (Forbes, Fast Company) and expansion to multiple countries
Visiting Lecturer
AGH University of Science and Technology
Delivered lectures and workshops on visual design, sharing practical experience with the next generation of designers.
- Curriculum Development: Developed and delivered courses on visual design and digital product development
- Practical Learning: Integrated real-world case studies and hands-on projects into academic curriculum
- Industry Bridge: Connected academic learning with current industry practices and trends
- Student Mentoring: Guided students through design projects and career development
Contract Designer
LILT
Built the original design system for LILT and collaborated with engineering and stakeholders on new initiatives for translators.
- Design System Foundation: Created the original design system that laid the groundwork for future product evolution
- Translator-Focused Design: Designed interfaces specifically for translators, who were the primary users at the time
- Cross-functional Collaboration: Worked closely with engineering and stakeholders to deliver new product initiatives
- Early-Stage Product: Helped shape the product direction during critical early growth phase
Lead Designer & Front-end Developer
Kanbanery
Designed and developed the interface for an online kanban board platform, working directly with users and internal stakeholders.
- Full-Stack Design: Owned both interface design and front-end code implementation
- User Collaboration: Worked directly with users to understand their workflow needs and pain points
- Product Leadership: Led design decisions and interface development for the entire platform
- Stakeholder Management: Collaborated with internal stakeholders to align product vision with user needs
Front-end Developer & Designer
Lunar Logic
Designed and developed user interfaces for web applications using Ruby on Rails, HTML, CSS, Sass and JavaScript.
- Full-Stack Development: Designed and implemented user interfaces from concept to production
- Ruby on Rails: Worked extensively with Ruby on Rails applications and MVC architecture
- Modern CSS: Utilized Sass and modern CSS techniques for maintainable stylesheets
- Client Collaboration: Worked directly with clients to translate requirements into functional interfaces
Front-end Developer
Making Waves (now NoA Ignite)
Worked with enterprise and government customers in Norway on custom application development using .NET framework and web technologies.
- Enterprise Applications: Developed custom applications for large enterprise and government clients
- .NET Framework: Worked with Microsoft .NET framework for web application development
- Client-Side Technologies: Implemented user interfaces using HTML, CSS and JavaScript
- International Experience: Gained valuable experience working in the Norwegian market
Core Skills
Design & Strategy
Collaboration
Technical
Design Philosophy
Kaizen
Continuous improvement through small, incremental changes. Getting 1% better every day creates lasting transformation.
Purpose-Driven Design
Understanding the 'why' behind every decision. Great design solves real problems and creates meaningful experiences.
Collaborative Growth
The best learning happens together. I value feedback, diverse perspectives, and collective wisdom.
Innovative Solutions
Seeing beyond conventional solutions. Innovation comes from questioning assumptions and exploring new possibilities.
Languages
English
Fluent
Polish
Native
German
Conversational