Application Guide

How to Apply for (Senior) Product Designer (m/f/d)

at 1KOMMA5°

🏢 About 1KOMMA5°

1KOMMA5° is a fast-growing climate tech company on a mission to make buildings CO2-neutral by integrating decentralized clean energy, mobility, and heat supply. They offer a unique opportunity to work on a holistic operating system that directly impacts the green energy transition, with a remote-first culture and a passionate team.

About This Role

As a (Senior) Product Designer, you will own the user experience for critical work streams like Field Operations and Warehousing, shaping tools that enable the company to scale its clean energy solutions. You’ll collaborate closely with product managers and engineers to solve complex problems, creating intuitive interfaces that drive operational efficiency and business impact.

💡 A Day in the Life

Your day might start with a stand-up with your product team to discuss progress on a new field operations feature. You’ll spend the morning sketching user flows and wireframes, then move to high-fidelity UI design in Figma. After lunch, you could join a discovery session with stakeholders or a design review with engineers, iterating based on feedback before wrapping up with documentation for handoff.

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Interview Prep

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🎯 Who 1KOMMA5° Is Looking For

  • A designer with 3+ years of experience crafting user-centric digital products for web, Android, and iOS, with a portfolio showcasing complex B2B or operations-focused solutions.
  • Strong visual design skills and a deep understanding of accessibility, able to turn messy operational workflows into clean, elegant interfaces.
  • Comfortable in agile environments, with experience leading discovery phases and iterating based on user feedback and data.
  • Excellent English communication skills (written and spoken), able to articulate design decisions clearly to cross-functional teams.

📝 Tips for Applying to 1KOMMA5°

1

In your portfolio, highlight projects where you designed for operational efficiency or complex workflows—e.g., field service, warehousing, or logistics interfaces.

2

Tailor your resume to emphasize experience with agile methodologies and collaboration with product managers and engineers.

3

Include a short case study showing how you turned a complex problem (e.g., inventory management) into a simple, accessible user flow.

4

Mention any experience with design systems or component libraries, as this suggests scalability for a growing product.

5

Since the role is remote in Germany, clarify your work authorization and time zone alignment in your cover letter.

✉️ What to Emphasize in Your Cover Letter

['Express passion for climate tech and 1KOMMA5°’s mission to decarbonize buildings.', 'Highlight your ability to own product design end-to-end, from discovery to high-fidelity delivery.', 'Show specific examples of how you’ve improved operational efficiency through design (e.g., reducing error rates or task completion time).', 'Emphasize your collaborative skills and experience working in agile, cross-functional teams.']

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🔍 Research Before Applying

To stand out, make sure you've researched:

  • → Explore 1KOMMA5°’s product offerings (e.g., their operating system for clean energy) to understand the user base and workflows.
  • → Read about their recent funding or growth milestones to gauge company stage and culture.
  • → Look into their blog or press releases for insights into their design philosophy or sustainability impact.
  • → Check out their career page and any designer profiles on LinkedIn to understand team dynamics.

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Walk me through a project where you designed for field operations or a similar complex workflow.
2 How do you balance visual appeal with accessibility in your designs?
3 Describe a time you had to iterate on a design based on user feedback—how did you prioritize changes?
4 How would you approach designing a warehouse management interface for non-technical users?
5 What’s your experience with design systems, and how would you contribute to one at 1KOMMA5°?
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⚠️ Common Mistakes to Avoid

  • Submitting a generic portfolio without case studies relevant to operations or B2B workflows.
  • Ignoring the remote-first aspect—failing to demonstrate self-discipline or async communication skills.
  • Overlooking accessibility in your portfolio—ensure your designs show inclusive practices.

📅 Application Timeline

This position is open until filled. However, we recommend applying as soon as possible as roles at mission-driven organizations tend to fill quickly.

Typical hiring timeline:

1

Application Review

1-2 weeks

2

Initial Screening

Phone call or written assessment

3

Interviews

1-2 rounds, usually virtual

✓

Offer

Congratulations!

Ready to Apply?

Good luck with your application to 1KOMMA5°!

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