Are you looking for your new UX/UI expert?
My expertise lies in UX/UI design and strategy. With a background in graphic design and visual communication, combined with over seven years of hands-on experience in startups, agencies, SaaS and B2B e-commerce, I create strong brand identities and diverse design solutions. I work independently, proactively, and in a structured manner while seamlessly integrating into teams. My experience in project management, client presentations, and leadership enables me to drive projects effectively. Always curious and eager to learn, I embrace new challenges with a strategic and user-centered approach.
Then you've come to the right place












Customers I worked with
My Portfolio


What my network says about me
‘The collaboration with Sini was characterised by a clear process and impressive, creative results.’
Enrico Bernardo
Geschäftsführer
‘Working with Sini, I got to know her as a very honest, creative and reliable person. She stands out for her careful way of working and her strong team spirit.’
Alex Kamychanski
Art Director
‘Rarely have I handed over my tasks in the areas of design team management, pattern library management, brand management and UX design with so much trust in one person. Sini is very organised, an absolute team player, conscientious, curious and much more senior than her CV indicates.’
Jan Persiel
Creative Director
‘With her collaborative approach, Sini brings people together to develop strong solutions. She recognises opportunities where others see problems and is always proactive and solution-oriented.’
Sina Kasten
Head of Product
‘Sini quickly became familiar with our domain and gave us great support with the UI concept and user research. I would work with her again at any time!’
Andreas Stephan
Digital Product Manager
Tools I use in my daily life as a UX/UI expert
I have in-depth knowledge in the use of common software solutions from various areas.
Figma

Adobe CC
ChatGPT
Hotjar
Notion
Miro
Asana
Jira
Get to know me

Sini Lenger
Senior Product Designer
27 years old
Born and raised in Berlin
Bachelor of Arts in Graphic Design and Visuall Communication
Bookworm and cat lover
About me
From an early age, I was fascinated by art and design—I spent a lot of time drawing, both traditionally and digitally, and even led my own comic drawing course in school. This passion for creativity continued throughout my education, where I explored different design fields through project work and internships. My second major in high school, Design and Media Technology, gave me my first insights into color theory, typography, and layout, ultimately leading me to pursue a degree in graphic design.
In 2021, I earned my Bachelor's degree in Graphic Design and Visual Communication from HMKW. During my studies, I developed a broad skill set in various design disciplines—from photography and motion design to prepress/press and film and post-production, all the way to interface and interaction design.
My first practical experience came from working at a SaaS startup, where I quickly took on responsibilities. I learned how to handle briefings, present designs, and collaborate with developers—experiences that shaped my structured and hands-on approach to work. After my studies, I stayed on as Head of Communication in the same startup, where I led the design and marketing teams, onboarded new team members and managed projects.
Since then, I have gained extensive experience in UX/UI, branding, and strategic design—both in startups and agencies. I worked as an Art Director in a performance agency, gaining valuable insights into the fast-paced agency environment. Most recently, as a UX/UI Team Lead in a B2B e-commerce company, I optimized processes, helped shape the brand identity, and worked closely with development and marketing. My daily responsibilities included design system management, user testing, feature development, and cross-team communication. Unfortunately, the company was shut down, which is why I am now looking for a new challenge where I can contribute my expertise and continue to grow.
I am independent, organized, proactive, and structured, yet also a true team player. I love taking on new challenges and finding creative solutions. Currently, I am expanding my knowledge in HTML, CSS, and accessibility through self-study to enhance my collaboration with developers, improve user experience, and ensure barrier-free design. Now, I am excited to bring my experience into a new and inspiring project and create something great together with a team!
As a UX/UI expert, my passion lies in UX/UI and strategy, but my studies and years of experience in the creative industry have also equipped me with strong skills in branding and graphic design.
UI & UX Design
I am an expert in the areas of visual design, wireframing, prototyping, responsive and interactive design, user research, user testing, information architecture, the development of design systems and I have a strong understanding of accessibility (a11y) principles.
Strategy & Direction
My approach to work is defined by strong independence and a proactive attitude. I enjoy working in teams, bring extensive experience in project management, and provide constructive feedback. I drive projects forward due to my excellent organizational skills and a passion for optimizing processes.
Branding
The development and understanding of strong brands, their identity, as well as precise messaging and positioning, I have already learned through numerous projects. From design to brand communication and target audience language, I can create a consistent brand experience.
Graphic Design
I am able to create diverse print materials, develop creative graphics for processes, and craft illustrations. Additionally, I design engaging social media ads and organic content, as well as high-quality master presentations that visually impress and effectively convey information.
Everything about my expertise
Interested in a collaboration? I look forward to hearing from you! Whether you have questions about my projects or are considering me for a position - simply use the contact form.
What's next?
Are you looking for your new UX/UI expert?
Then you've come to the right place
My expertise lies in UX/UI design and strategy. With a background in graphic design and visual communication, combined with over seven years of hands-on experience in startups, agencies, SaaS and B2B e-commerce, I create strong brand identities and diverse design solutions. I work independently, proactively, and in a structured manner while seamlessly integrating into teams. My experience in project management, client presentations, and leadership enables me to drive projects effectively. Always curious and eager to learn, I embrace new challenges with a strategic and user-centered approach.
Customers I worked with






My Portfolio


Everything about my expertise
As a UX/UI expert, my passion lies in UX/UI and strategy, but my studies and years of experience in the creative industry have also equipped me with strong skills in branding and graphic design.
UI & UX Design
I am an expert in the areas of visual design, wireframing, prototyping, responsive and interactive design, user research, user testing, information architecture, the development of design systems and I have a strong understanding of accessibility (a11y) principles.
Strategy & Direction
My approach to work is defined by strong independence and a proactive attitude. I enjoy working in teams, bring extensive experience in project management, and provide constructive feedback. I drive projects forward due to my excellent organizational skills and a passion for optimizing processes.
Branding
The development and understanding of strong brands, their identity, as well as precise messaging and positioning, I have already learned through numerous projects. From design to brand communication and target audience language, I can create a consistent brand experience.
Graphic Design
I am able to create diverse print materials, develop creative graphics for processes, and craft illustrations. Additionally, I design engaging social media ads and organic content, as well as high-quality master presentations that visually impress and effectively convey information.
Tools I use in my daily life as a UX/UI expert
I have in-depth knowledge in the use of common software solutions from various areas.
Figma

Adobe CC
ChatGPT
Hotjar
Notion
Miro
Asana
Jira
Get to know me

From an early age, I was fascinated by art and design—I spent a lot of time drawing, both traditionally and digitally, and even led my own comic drawing course in school. This passion for creativity continued throughout my education, where I explored different design fields through project work and internships. My second major in high school, Design and Media Technology, gave me my first insights into color theory, typography, and layout, ultimately leading me to pursue a degree in graphic design.
In 2021, I earned my Bachelor's degree in Graphic Design and Visual Communication from HMKW. During my studies, I developed a broad skill set in various design disciplines—from photography and motion design to prepress/press and film and post-production, all the way to interface and interaction design.
My first practical experience came from working at a SaaS startup, where I quickly took on responsibilities. I learned how to handle briefings, present designs, and collaborate with developers—experiences that shaped my structured and hands-on approach to work. After my studies, I stayed on as Head of Communication in the same startup, where I led the design and marketing teams, onboarded new team members and managed projects.
Since then, I have gained extensive experience in UX/UI, branding, and strategic design—both in startups and agencies. I worked as an Art Director in a performance agency, gaining valuable insights into the fast-paced agency environment. Most recently, as a UX/UI Team Lead in a B2B e-commerce company, I optimized processes, helped shape the brand identity, and worked closely with development and marketing. My daily responsibilities included design system management, user testing, feature development, and cross-team communication. Unfortunately, the company was shut down, which is why I am now looking for a new challenge where I can contribute my expertise and continue to grow.
I am independent, organized, proactive, and structured, yet also a true team player. I love taking on new challenges and finding creative solutions. Currently, I am expanding my knowledge in HTML, CSS, and accessibility through self-study to enhance my collaboration with developers, improve user experience, and ensure barrier-free design. Now, I am excited to bring my experience into a new and inspiring project and create something great together with a team!
Sini Lenger
Senior Product Designer
27 years old
Born and raised in Berlin
Bachelor of Arts in Graphic Design and Visuall Communication
Bookworm and cat lover
What my network says
about me
‘The collaboration with Sini was characterised by a clear process and impressive, creative results.’
Enrico Bernardo
Geschäftsführer
‘Working with Sini, I got to know her as a very honest, creative and reliable person. She stands out for her careful way of working and her strong team spirit.’
Alex Kamychanski
Art Director
‘Rarely have I handed over my tasks in the areas of design team management, pattern library management, brand management and UX design with so much trust in one person. Sini is very organised, an absolute team player, conscientious, curious and much more senior than her CV indicates.’
Jan Persiel
Creative Director
‘With her collaborative approach, Sini brings people together to develop strong solutions. She recognises opportunities where others see problems and is always proactive and solution-oriented.’
Sina Kasten
Head of Product
‘Sini quickly became familiar with our domain and gave us great support with the UI concept and user research. I would work with her again at any time!’
Andreas Stephan
Digital Product Manager
What's next?
Interested in a collaboration? I look forward to hearing from you! Whether you have questions about my projects or are considering me for a position - simply use the contact form.
Get in touch
Sini Lenger