KOSMA LENAR

Drive Product Success with Senior UX Expertise

Delivering exceptional UX that transforms ideas into user-focused, high-performance products.

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UX & Design Expert

I have been researching and designing products for over 17 years. I have built design teams that have created cutting-edge mar-tech, AI, online and traditional product sales.

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nomma webflow agency tworzenie stron www

I provide a comprehensive range of design services to meet your every need.

I create user-centered experiences that drive engagement, improve usability, and increase conversions.

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Explore

I analyze user behavior to understand their goals and needs. I’ve developed product growth strategies and conducted UX research.

Briefs

Research

Strategy

Persona

User Stories

Design

From prototyping ideas to detailed designs of web, analytical, and mobile applications. I’ve designed for nearly every industry.

Prototyping

User Interface

Mobile Design

User flows

Product Design

UX Design

Build

I know that communication and understanding the app development process are essential. I’ve built Dev+UI teams, enabling me to deliver projects from start to finish.

Design System

Revisions

Storybook

Product Owning

Scrum

Improve

Every product needs to be enhanced and expanded. That’s what the market expects. I’ll help you define strategies, goals, and next steps for growth.

Analyze

Metrics

Improve

Product scores

Mentorship

Fractional Design Leader

Welcome to my space where innovative design meets exceptional user experiences.
With a passion for creating SaaS products that drive growth and deliver value, I'm your go-to expert for transforming ideas into reality.

Head Profile

What is FDL

A fractional design leader is a professional who provides experienced leadership and management for design teams on a part-time or project basis.

Connected No Data

Why Choose Fractional Design Leadership?

Gain access to unparalleled design expertise tailored to your business needs. Achieve significant savings by engaging high-level talent only when you need it.

Learn more
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Selected projects

giq-nomma-webflow

Webflow

Relume

Web Development

GiQ

A custom Webflow website made with Relume, JS and an advanced animation implementation.

Live Website

Product Design

UX Design

Research

Team Leadership

SALESmanago

Leading the Product Design team at Marketing Automation Product

Go to Product
giq-nomma-webflow

Design System

UI Design

Product Ownership

Colloid Design System

The most advanced library of data-driven UI components

Go to Libary
Go to Case Study
giq-nomma-webflow

Web Design

Synerise Changelog & Release notes

A custom Web Design for AI Growth MA Company

Live Website

Product Design

Web Design

UX Design

Beans

Website and Product Design for Coffee Marketplace

Go to Case Study

Product Design

Design System

UX Design

Team Leadership

Synerise

Design Systems Creation and Product Design for AI Growth Marketing tool

Go to Product

Webflow

Branding

ProjectPulse

Branding + dedicated product website integrated with Stripe

Learn more

Figma Showcase

Open our projects in Figma

Open Figma
Tagline

Driving Results
through Design

I’m passionate about transforming complex challenges into clear, data-driven design solutions. Having worked across industries, I bring a wealth of experience and an eye for innovation that helps businesses grow.

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Empowering Growth with UX

7+ Startups Accelerated

Guided early-stage companies in building scalable, user-centered digital products

Certified Webflow Partner and expert in Relume, I ensure every website is custom-crafted to meet modern design and usability standards.

30% Conversion Increase

30%

Achieved significant conversion improvements for clients through optimized UX design.

100% Custom Solutions

100%

Every project is tailored to client needs, with no templates—just personalized design excellence.

50+ Projects Delivered

50+

Successfully completed projects across various industries, consistently meeting client expectations and delivering quality.

The Power of Design Consultancy

I designed for Top Brands from Automotive giants to Tech innovators
SERVICES

My core expertise

From Discovery Phases to Design & Prototyping, we deliver
solutions that boost engagement and business growth.

Design Data

Transform raw data into actionable insights through compelling visualizations.
Done
Expert in crafting data visualizations that uncover hidden patterns and trends.

Analytics Features

Create intuitive dashboards and analytics panels for better decision-making.
Done
Designed analytics features that enhance user engagement and satisfaction for leading marketing automation companies.

Automation Workflows

Create efficient automation workflows tailored to your business needs.
Done
Expertise in designing workflows that increase efficiency and productivity.

AI Integration

Integrate AI with data seamlessly to unlock new potentials.
Done
Proven track record of integrating AI into data-driven designs, resulting in smarter solutions.

UX Metrics

Utilize UX metrics (NPS, CSAT, CES, SUS) to understand and improve user satisfaction.
Done
Proficient in employing UX metrics to measure and boost customer satisfaction.

UI Components

Design user interface components specifically for data and analytics panels.
Done
Specialized in creating UI components that are both functional and aesthetically pleasing.

Personalized Dashboards

Craft personalized dashboards and modules based on provided data.
Done
Successfully developed personalized dashboards that cater to diverse client requirements.

Segmentation Tools

Design segmentation tools with AI predictions and conditional rules.
Done
Expertise in building segmentation tools that drive effective marketing strategies.

Customer Data Platforms

Develop comprehensive customer data platforms with detailed profiles and automation flows.
Done
Created robust data platforms that streamline customer relationship management.

Behavioral Insights

Leverage data analysis to gain profound insights into customer behaviors.
Done
Proficient in analyzing behavioral data to uncover significant customer insights, helping businesses better understand their audience.

Workshops & Interviews

Engage with users to gather valuable insights and feedback for precise design improvements.
Done
Expert in conducting workshops and interviews that reveal user needs and preferences, driving effective design strategies and enhancing user experience.

Complex Design Systems

Design and implement comprehensive systems that integrate advanced analytics and data-driven components.
Done
Specialize in creating intricate design systems that unify various data sources, enhance user interaction, and support scalable growth.

Design Data

Transform raw data into actionable insights through compelling visualizations.
Done
Extensive experience in creating data visualizations that reveal hidden patterns and trends.

Analytics Features

Create intuitive dashboards and analytics panels for better decision-making.
Done
Developed analytics features for top marketing automation companies, enhancing user engagement and satisfaction.

Automation Workflows

Develop efficient automation nodes and workflows customized for your business.

Done
Expertise in designing workflows that increase efficiency and productivity.

AI Integration

Seamlessly connect AI with data to unlock new possibilities.
Done
Proven track record of integrating AI into data-driven designs, resulting in smarter solutions.

UX Metrics

Utilize UX metrics (NPS, CSAT, CES, SUS) to understand and improve user satisfaction.
Done
Proficient in employing UX metrics to measure and boost customer satisfaction.

UI Components

Design user interface components specifically for data and analytics panels.
Done
Specialized in creating UI components that are both functional and aesthetically pleasing.

Personalized Dashboards

Craft personalized dashboards and modules based on provided data.
Done
Successfully developed personalized dashboards that cater to diverse client requirements.

Segmentation Tools

Design segmentation tools with AI predictions and conditional rules.
Done
Expertise in building segmentation tools that drive effective marketing strategies.

Customer Data Platforms

Develop comprehensive customer data platforms with detailed profiles and automation flows.

Done
Created robust data platforms that streamline customer relationship management.

Behavioral Insights

Gain deeper insights into customer behaviors through data analysis.

Done
Extensive experience in analyzing behavioral data to uncover valuable customer insights.

Workshops & Interviews

Conduct workshops and interviews to enhance user satisfaction using behavioral data.
Done
Led numerous workshops and interviews that have driven significant improvements in product design.

Complex Design Systems

Create intricate design systems that incorporate analytics and data-driven components.
Done
Designed comprehensive systems that integrate complex data and analytics modules, ensuring consistency and usability.
Contact

Partners's Feedback

As the Head of Product Design at SALESmanago for the past 1.5 years, Kosma has exemplified exceptional leadership and business acumen. His strategic vision has been pivotal in transforming our product design approach, directly contributing to the growth and success of our SaaS offerings.

Piotr Uryga

CTO, SALESmanago

Kosma is a very experienced designer, proficient in both complex system design and rapid prototyping of solutions in collaboration with developers. Highly recommended!

Wojtek Szkutnik

CEO, getbeans.com

CASE STUDIES

Data-driven Success Stories

Transforming Businesses with Data-Driven Design

Synerise

Synerise is a company from Poland that started in 2013. They have a "Growth as a Service" platform with tools to analyze and improve a business. Their dashboards help with marketing, business insights, and revenue management.

It was an exciting opportunity to apply my expertise in conceptual thinking and user interface design to enhance the user experience. I approached this challenge with meticulous attention to detail, ensuring that every aspect of the new functionalities was thoughtfully designed. From wireframing and prototyping to iterating and refining, I dedicated myself to crafting intuitive and visually appealing solutions.
Design Systems Creation
Led the development of comprehensive and cohesive design systems.
Product Innovation
Designed and implemented innovative product features aligned with market needs.
User-Centered Design
Applied user-centered design principles to ensure product effectiveness.
Cross-Functional Collaboration
Worked closely with various stakeholders to align design strategies with business goals.
Design System
Senior Product Designer
Product Design
Data Design
Product Ownership
Workflows & Automations
CDP
Data Visualization
UX
Segmentation
Go to Design System

SALESmanago

Driving Growth for SALESmanago

At SALESmanago, I led a team of designers and researchers to create user-centric experiences, implementing Scrum-based design processes that boosted team performance by 20%. I defined and managed product personas, user insights, and feedback, delivering high-quality prototypes and conducting extensive usability testing.

Team Performance Improvement

Improved team performance by 20% through the implementation of Scrum-based design processes.

User-Centric Experiences

Designed and prototyped user flows and interfaces that enhanced the overall user experience.

Effective Usability Testing

Conducted extensive usability testing to ensure product effectiveness and user satisfaction.

Targeted Design Solutions

Defined and managed product personas, user insights, and feedback, leading to more targeted design solutions.
Head of Product Design
Design System
Product Design
Data Design
Team Leadership
Workflows & Automations
CDP
Data Visualization
UX
Segmentation
AI Features

Specialization Accross
Data-Driven & Marketing Automation Tools

As a specialist in data-driven design and marketing automation, I have extensive experience with a wide range of industry-leading tools. My expertise ensures that your business can harness the full potential of these platforms to drive growth and enhance performance.

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Get in Touch

Let’s talk about how I can help bring your ideas to life. For inquiries, collaborations, or just to say hello, please reach out through any of the following channels.

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Email

For project inquiries or general questions, reach out to me at:

lenar.kosma@gmail.com

Video Call

Want to discuss your needs directly? Feel free to call:

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LinkedIn

Connect on LinkedIn for networking, professional opportunities, and more.

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