Softvery Solutions

We are currently seeking a Product Designer. 
Do you love making quick, data-driven decisions and have no desire to get bogged down in pixel perfection? Do you see AI as a new way of working and are you eager to integrate it fully into the design and development process? Then take on full UX/UI responsibility for our digital product portfolio at Kartenliebe and inspire millions of customers with your ideas!

We are – a growing e-commerce company with around 40 employees, specializing in customizable stationery. As a wholly owned subsidiary of MYPOSTER, we combine emotional design with digital expertise – from AI-powered personalization in the configurator to automated production. We design our processes ourselves, thoughtfully and with meticulous attention to detail. We combine structured quality with the spirit of a start-up: short communication channels, plenty of creative freedom, and a team that works together.

... YOUR TASKS – WHAT YOU'RE PASSIONATE ABOUT

You analyze A/B tests, heatmaps, and funnels, deriving optimizations to skyrocket our conversion rate.

You conduct user tests and customer surveys to validate your designs not only quantitatively but also qualitatively.

You develop AI-powered prototypes for new ideas and strategies, enabling us to quickly validate them hands-on.

You build, maintain, and expand our design system as the foundation for an AI-first product development process.

When AI reaches its limits, you create your own designs in Figma for complex topics.

You evaluate new ideas regarding feasibility and effort from a UX perspective and ensure they deliver real added value to users.

WHAT YOU BRING

You have at least 5 years of experience in UX/UI design – ideally, advanced knowledge as a senior with experience in the B2C e-commerce environment.
You have comprehensive skills in All phases of the design process – from research and design to testing

You have experience in evaluating metrics, usage data, and A/B results, and can derive concrete hypotheses and design decisions from them, as well as measure the impact of your ideas

You are passionate about building variations, testing them quickly, and bringing features live

You can translate complex design requirements into a simple, user-friendly UI, always prioritizing the user perspective

You enjoy trying out new AI tools and finding clever ways to make processes faster and smarter

Your Role, Your Impact

You'll have complete design responsibility for our online shop and determine how millions of customers experience our product.

You'll use insights from tests, analyses, and user feedback to develop targeted features that noticeably boost our conversion rate.

Your prototypes won't get lost in a drawer; they'll be launched and their results measured in short cycles.

What You Can Expect From Us

No ego trips, no downtime: Here, what counts is proactive thinking, hands-on work, and shaping the future.

Development that suits you: Quarterly goals, feedback sessions, and professional development without budget caps—with room for initiative and on-the-job growth.

AI as a tool: You'll work with the latest tools and automate wherever possible.

Family-friendly and self-determined work style: Trust-based working hours and flextime for a work schedule that fits your everyday life.
Staying healthy and mobile: EGYM Wellpass, Jobrad or MINI leasing – the choice is yours!
Team events with character: We celebrate successes and our team spirit at summer parties, pub quizzes, barbecues, and more.

Вимоги
 

• 5 years of experience in UX/UI design
• advanced knowledge as a senior with experience in the B2C e-commerce environment
• experience in evaluating metrics, usage data, and A/B results, and can derive concrete hypotheses and design decisions from them, as well as measure the impact of your idea
• trying out new AI tools and finding clever ways to make processes faster and smarter

Обов'язки
 

• You'll have complete design responsibility for our online shop and determine how millions of customers experience our product.
• You'll use insights from tests, analyses, and user feedback to develop targeted features that noticeably boost our conversion rate.

• Your prototypes won't get lost in a drawer; they'll be launched and their results measured in short cycles.

   

Буде плюсом
 

must have -  B2C e-commerce portfolio 
 

About the Project
We are working with a fast-growing, venture-backed US startup building an AI-powered go-to-market automation platform.
The product helps companies find and enrich potential customers, automate outbound communication through email and LinkedIn, generate sales pipelines, and book meetings using AI agents.
The company is growing quickly and is looking to expand its engineering capacity with a strong, product-minded engineer who can work as an embedded member of a small founding team.

The Role
We are looking for a Senior Full-Stack Software Engineer with a strong backend focus.
Approximately 70% of the work will be backend development with Python, Django, and SQL, while around 30% will involve React and product-facing frontend development.
You will work directly with the founders and other engineers, take ownership of product features, communicate with customers, and contribute to technical and product decisions.
This role is best suited to someone who enjoys working in a small, fast-moving startup environment with significant ownership and limited bureaucracy.

Responsibilities
Own product features across the full development lifecycle.
Design, build, test, deploy, and maintain backend and frontend functionality.
Develop backend services using Python, Django, and SQL.
Build and improve user-facing functionality using React and JavaScript.
Architect scalable and maintainable technical solutions.
Work with AI agents, data enrichment processes, and automation workflows.
Use AI coding assistants and agentic development workflows to accelerate delivery.
Debug production issues and improve system performance and reliability.
Work directly with customers to understand problems and translate feedback into product improvements.
Participate in product roadmap, architecture, and technical strategy discussions.
Collaborate closely with the founders and the rest of the engineering team.
Communicate progress, risks, and technical trade-offs clearly.

Required Experience
5+ years of professional software development experience.
Strong commercial experience with Python.
Strong knowledge of SQL and relational databases.
Experience building and deploying software used by real customers.
Full-stack development experience, with a stronger focus on backend engineering.
Experience designing APIs, backend services, and production systems.
Ability to independently take a feature from an initial idea to production.
Experience working with modern AI coding assistants or agentic coding workflows.
Strong debugging and problem-solving skills.
Product-oriented mindset and ability to make practical engineering decisions.
Strong written and spoken English.
Ability to work effectively in a fast-paced and sometimes ambiguous startup environment.
Availability for regular working-hours overlap with a New York-based team.

Preferred Experience
Commercial experience with Django.
Experience with React and JavaScript.
Experience with Pandas and dataframe-based data processing.
Experience with Node.js.
Knowledge of AWS or another major cloud platform.
Experience working with AI-powered products, LLMs, autonomous agents, or workflow automation.
Previous experience in sales technology, marketing technology, data enrichment, or B2B SaaS.
Experience working directly with customers.
Experience leading engineers or owning technical initiatives.
Previous experience in an early-stage startup.

What We Value
Ownership
You can independently understand a problem, propose a solution, and deliver it without constant supervision.
Speed
You know how to move quickly while maintaining an appropriate level of engineering quality.
Product Thinking
You consider customer value and business impact rather than focusing only on technical implementation.
Communication
You communicate openly, raise risks early, and collaborate productively with both technical and non-technical colleagues.
Adaptability
You can prioritize effectively and adjust your approach as product and business requirements evolve.
Humble Confidence
You are comfortable presenting strong technical opinions while remaining open to better ideas.
Team and Communication
You will join a small, highly involved startup team and work directly with the company’s founders and engineers.
The team communicates through Slack and holds daily stand-ups. Close communication, fast feedback, and active participation in technical and product discussions are important parts of the role.

Stage 1: Screening and Technical Interview
A discussion covering:
Professional background and relevant projects.
Python, Django, SQL, and full-stack experience.
Product ownership and startup experience.
AI-assisted development workflows.
Communication and team fit.

Stage 2: Final Technical Interview
A more detailed session that may include:
System architecture and design discussion.
Practical Python and SQL exercises.
Debugging or extending an existing solution.
Discussion with founders and other team members.