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Are you looking for your new Product expert?

I'm a strategic and hands-on Product Designer with a background in Graphic Design and Visual Communication and 5+ years of experience across B2B SaaS and e-commerce startups and agencies. My passion is about creating thoughtful, intuitive digital experiences. Most recently, as Lead UX/UI Designer at a B2B e-commerce startup, I built a holistic design system, shaped scalable solutions, and optimized user flows through research and testing. My experience includes brand development, content strategy, and close collaboration with cross-functional teams to align design with business goals. Now seeking a new opportunity, I bring a strong UX/UI foundation, leadership skills, and a deep understanding of user-centered design to complex projects. I'm also expanding my skills in HTML, CSS, and accessibility.

toll-und-toll_logo-wv-2-400x85 1
otovo_logo 1
Ambiletics_Logo_RGB_Black_63fe09ab-d864-454c-aba1-88976fb400ca 1
metabo-logo-wv-2-400x120 1
ogimage_200x200 1
feerronordic-1 1
toll-und-toll_logo-wv-2-400x85 1
otovo_logo 1
Ambiletics_Logo_RGB_Black_63fe09ab-d864-454c-aba1-88976fb400ca 1
metabo-logo-wv-2-400x120 1
ogimage_200x200 1
feerronordic-1 1

Customers I worked with

Case studies

In these case studies, I show how I have strategically solved complex design challenges - from brand relaunch and website redesign for a B2B tech company to UX optimisation of a scalable sidebar navigation in a knowledge management tool.

writeaguide.png

UX/UI

Product

Web

Mobile

writeaguide (B2B SaaS) sidebar navigation feature

For the SaaS tool writeaguide, I conceptualised and designed a sidebar navigation for the first time to enable structured orientation in complex content structures and create the basis for a scalable, intuitive user experience.

isa.png

UX/UI

Product

Branding

Web

Mobile

International Showtimes (B2B SaaS) website relaunch

For International Showtimes, I was responsible for the complete redesign of the website, including a new corporate identity, in order to position the brand more clearly and improve the user experience in the B2B context in the long term.

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 Product expert

I have in-depth knowledge in the use of common software solutions from various areas.

Figma

Clip path group

Adobe CC

ChatGPT

Hotjar

Notion

Miro

Asana

Jira

Get to know me

profilbild.png

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 UX/UI design.

 

During my internship, subsequent working student position, and later permanent role at a B2B SaaS startup, I already took on comprehensive and responsible tasks that extended far beyond classic UX/UI design. I developed early expertise in user-centered product development by leading the conceptualization and implementation of new features, developing the Help Center, and managing the social media strategy, including the creation of organic content. SEO analyses and the optimization of product and website texts were also part of my responsibilities. This early and broad range of tasks enabled my rapid professional growth and the development of a comprehensive understanding of the various dimensions of product development and communication.

Later in my career, I was able to fully utilise and deepen my expertise in product design both in an agency and in management positions. As a Senior UX/UI Designer in a B2B and B2C agency, I was responsible for end-to-end design projects for complex digital products. My focus was on holistic design, from in-depth user research and well thought-out information architecture to sophisticated user testing and interactive prototypes, engaging interaction design and the development of responsive, visual interfaces. Working closely with development teams and stakeholders, I ensured the seamless alignment of business and user goals, implemented CMS customisations and conducted effective UX/UI CRO audits to optimise user experience and conversion rates. Most recently, I worked as Lead UX/UI Designer at a B2B e-commerce company, where I led the visual design team and drove the strategic and operational digital design process with the goal of consistent user-centricity. This included conducting user research and usability tests, developing scalable information architectures and continuously optimising existing platform features. A core aspect of my responsibility was the strategic development of our comprehensive design system in Figma, including the creation of reusable UI components and ensuring technical feasibility and design quality in close collaboration with cross-functional development teams.

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. Now, I am excited to bring my experience into a new and inspiring project and create something great together with a team!

Everything about my expertise

As a Senior Product Designer, I combine user-centred thinking with strategic design to create digital products with real added value. With expertise in UX/UI, branding and leadership,

I design experiences that work, inspire and sustainably strengthen brands.

Product

I develop holistic product solutions with a clear focus on user needs, technological feasibility and business added value. My design process combines research, prototyping and iterative testing to create digital products that are both functional and aesthetically pleasing. I emphasise a deep understanding of business models and seamless collaboration with interdisciplinary teams.

UX/UI

With a user-centred approach, I design intuitive and accessible interfaces that put people at the centre. I combine qualitative and quantitative user research with thoughtful interaction design and visual sensitivity to create outstanding digital experiences. Accessibility, consistency and emotionality are just as relevant to me as usability and performance.

Leadership

As someone with leadership experience, I focus on empowerment, empathy and clear visions. I encourage creative teams, build structures for collaborative work and strategically develop talent. My leadership style is based on trust, open communication and the ability to position design as a business-relevant discipline - always with the aim of promoting innovation and impact.

Branding & Graphic Design

I create strong brand identities through the strategic combination of design, identity and storytelling. From conception to implementation, I develop visual systems that create recognisability and emotional connection. My skills in graphic design range from typography, layout and colour psychology to illustration and motion design - always with the aim of presenting brands in a visually precise and effective way.

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 Product expert?

I'm a strategic and hands-on Product Designer with a background in Graphic Design and Visual Communication and 5+ years of experience across B2B SaaS and e-commerce startups and agencies. My passion is about creating thoughtful, intuitive digital experiences. Most recently, as Lead UX/UI Designer at a B2B e-commerce startup, I built a holistic design system, shaped scalable solutions, and optimized user flows through research and testing. My experience includes brand development, content strategy, and close collaboration with cross-functional teams to align design with business goals. Now seeking a new opportunity, I bring a strong UX/UI foundation, leadership skills, and a deep understanding of user-centered design to complex projects. I'm also expanding my skills in HTML, CSS, and accessibility.

Customers I worked with

otovo_logo 1
toll-und-toll_logo-wv-2-400x85 1
Ambiletics_Logo_RGB_Black_63fe09ab-d864-454c-aba1-88976fb400ca 1
metabo-logo-wv-2-400x120 1
ogimage_200x200 1
feerronordic-1 1

Case Studies

isa.png

UX/UI

Branding

Product

Mobile

Web

International Showtimes (B2B SaaS) website relaunch

For International Showtimes, I was responsible for the complete redesign of the website, including a new corporate identity, in order to position the brand more clearly and improve the user experience in the B2B context in the long term.

writeaguide.png

writeaguide (B2B SaaS) sidebar navigation feature

UX/UI

Product

Mobile

Web

For the SaaS tool writeaguide, I conceptualised and designed a sidebar navigation for the first time to enable structured orientation in complex content structures and create the basis for a scalable, intuitive user experience.

In these case studies, I show how I have strategically solved complex design challenges - from brand relaunch and website redesign for a B2B tech company to UX optimisation of a scalable sidebar navigation in a knowledge management tool.

Everything about my expertise

As a Senior Product Designer, I combine user-centred thinking with strategic design to create digital products with real added value. With expertise in UX/UI, branding and leadership, I design experiences that work, inspire and sustainably strengthen brands.

Product

I develop holistic product solutions with a clear focus on user needs, technological feasibility and business added value. My design process combines research, prototyping and iterative testing to create digital products that are both functional and aesthetically pleasing. I emphasise a deep understanding of business models and seamless collaboration with interdisciplinary teams.

UX/UI

With a user-centred approach, I design intuitive and accessible interfaces that put people at the centre. I combine qualitative and quantitative user research with thoughtful interaction design and visual sensitivity to create outstanding digital experiences. Accessibility, consistency and emotionality are just as relevant to me as usability and performance.

Leadership

As someone with leadership experience, I focus on empowerment, empathy and clear visions. I encourage creative teams, build structures for collaborative work and strategically develop talent. My leadership style is based on trust, open communication and the ability to position design as a business-relevant discipline - always with the aim of promoting innovation and impact.

Branding & Graphic Design

I create strong brand identities through the strategic combination of design, identity and storytelling. From conception to implementation, I develop visual systems that create recognisability and emotional connection. My skills in graphic design range from typography, layout and colour psychology to illustration and motion design - always with the aim of presenting brands in a visually precise and effective way.

Tools I use in my daily life as a Product expert

I have in-depth knowledge in the use of common software solutions from various areas.

Figma

Clip path group

Adobe CC

ChatGPT

Hotjar

Notion

Miro

Asana

Jira

Get to know me

profilbild.png

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 UX/UI design.

 

During my internship, subsequent working student position, and later permanent role at a B2B SaaS startup, I already took on comprehensive and responsible tasks that extended far beyond classic UX/UI design. I developed early expertise in user-centered product development by leading the conceptualization and implementation of new features, developing the Help Center, and managing the social media strategy, including the creation of organic content. SEO analyses and the optimization of product and website texts were also part of my responsibilities. This early and broad range of tasks enabled my rapid professional growth and the development of a comprehensive understanding of the various dimensions of product development and communication.

Later in my career, I was able to fully utilise and deepen my expertise in product design both in an agency and in management positions. As a Senior UX/UI Designer in a B2B and B2C agency, I was responsible for end-to-end design projects for complex digital products. My focus was on holistic design, from in-depth user research and well thought-out information architecture to sophisticated user testing and interactive prototypes, engaging interaction design and the development of responsive, visual interfaces. Working closely with development teams and stakeholders, I ensured the seamless alignment of business and user goals, implemented CMS customisations and conducted effective UX/UI CRO audits to optimise user experience and conversion rates. Most recently, I worked as Lead UX/UI Designer at a B2B e-commerce company, where I led the visual design team and drove the strategic and operational digital design process with the goal of consistent user-centricity. This included conducting user research and usability tests, developing scalable information architectures and continuously optimising existing platform features. A core aspect of my responsibility was the strategic development of our comprehensive design system in Figma, including the creation of reusable UI components and ensuring technical feasibility and design quality in close collaboration with cross-functional development teams.
 

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. 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

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