Application Guide

How to Apply for (Senior) Software Engineer Flutter (m/f/d)

at 1KOMMA5°

🏢 About 1KOMMA5°

1KOMMA5° is unique for its holistic approach to creating CO2-neutral buildings through decentralized clean energy, mobility, and heat supply solutions. Working here means contributing directly to Germany's energy transition while being part of a remote-first, cross-functional team that values self-organization and innovation in sustainable technology.

About This Role

As a Senior Software Engineer Flutter, you'll be a founding member of the mobile team building the Installation Manager app, which digitizes operations from ground work to rooftop installations. This role is impactful because you'll shape both the technical architecture and team culture while directly supporting Germany's shift to decentralized clean energy systems.

💡 A Day in the Life

A typical day involves collaborating remotely with cross-functional team members on the Installation Manager app, implementing new features using Flutter while ensuring code quality through automated tests, reviewing colleagues' code, and participating in async discussions about improving both the product and team processes. You might also be integrating with backend APIs or optimizing app performance for field technicians using the app during installations.

🚀 Application Tools

Generate Cover Letter

AI-powered, tailored for 1KOMMA5°

Interview Prep

Practice questions for this role

🎯 Who 1KOMMA5° Is Looking For

  • Has shipped multiple Flutter apps to both iOS and Android stores with experience in automated testing, CI/CD pipelines, and maintaining production code
  • Demonstrates experience integrating native platform APIs/UX guidelines and server-side APIs while managing databases in a mobile context
  • Thrives in remote, async-heavy environments and can navigate cross-functional collaboration with frontend/backend engineers, product owners, and UX/UI designers
  • Shows initiative in coaching colleagues on testing, design methods, and coding standards while sharing knowledge across team boundaries

📝 Tips for Applying to 1KOMMA5°

1

Highlight specific Flutter apps you've shipped cross-platform, including metrics like download numbers or user retention if possible

2

Detail your experience with automated testing frameworks for Flutter (like flutter_test) and CI/CD tools relevant to mobile deployment

3

Showcase examples where you've implemented native iOS/Android UX guidelines or integrated complex server-side APIs in previous roles

4

Demonstrate your remote collaboration skills by mentioning tools you've used (Slack, Jira, etc.) and how you've contributed to async workflows

5

Connect your experience to sustainability or energy tech if possible, showing understanding of 1KOMMA5°'s mission

✉️ What to Emphasize in Your Cover Letter

['Your hands-on experience building and maintaining production Flutter apps, especially those involving hardware integration or field operations', 'Examples of coaching colleagues on testing/development practices and contributing to team knowledge sharing', "How you've worked effectively in remote, cross-functional teams with product owners and designers", "Why you're specifically interested in digitizing installation processes for sustainable energy systems"]

Generate Cover Letter →

🔍 Research Before Applying

To stand out, make sure you've researched:

  • → 1KOMMA5°'s specific products and services in decentralized energy, mobility, and heat supply solutions
  • → Germany's energy transition (Energiewende) policies and how they impact the building sector
  • → The challenges of digitizing field operations in construction/installation industries
  • → Recent company news or projects to understand their current technical direction

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Walk through your approach to architecting a Flutter app that needs to work offline during field installations
2 How you've implemented automated testing for a Flutter app and integrated it into CI/CD pipelines
3 Describe a time you had to implement native platform-specific features or adhere to iOS/Android UX guidelines
4 How you've collaborated with backend engineers to design efficient API integrations for mobile apps
5 Your experience working in self-organized teams and contributing to team process improvements
Practice Interview Questions →

⚠️ Common Mistakes to Avoid

  • Only showing simple demo apps without production deployment experience
  • Failing to demonstrate understanding of automated testing or CI/CD for mobile development
  • Not showing examples of cross-functional collaboration or knowledge sharing in previous roles

📅 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°!

← Back to Job Listing Apply Now →