Application Guide

How to Apply for Principal Engineer

at Omnidian

🏢 About Omnidian

Omnidian is at the forefront of the clean energy transition, providing 24/7 monitoring and diagnostics for solar systems. The company's mission-driven focus on sustainability, combined with its remote-first culture and use of cutting-edge tech (AWS, Kotlin, React), makes it an exciting place for engineers who want to have a tangible impact on the environment while working on complex technical challenges.

About This Role

As Principal Engineer, you'll be the technical backbone guiding Omnidian's platform through hyper-growth. You'll architect scalable solutions, drive technical strategy via RFCs, and mentor teams—all within a modern AWS/Kotlin/React stack. This role is critical for ensuring the platform can support millions of solar systems reliably, directly enabling the company's vision of making solar energy accessible and dependable.

💡 A Day in the Life

You might start by reviewing RFCs from teams, then join a design review for a new monitoring feature. After lunch, you could pair with a team on optimizing an AWS Lambda function for cost, and end the day writing a technical strategy doc for migrating to EKS. Throughout, you'll be mentoring engineers and moderating cross-team discussions on trade-offs.

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Interview Prep

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🎯 Who Omnidian Is Looking For

  • A seasoned technical leader with 10+ years of experience, including at least 3 as a Principal or Lead Engineer driving company-wide initiatives.
  • Deep expertise in Kotlin (JVM), React (TypeScript), AWS, and Kubernetes (EKS), with a track record of designing scalable, resilient platform architectures.
  • A strong communicator who can build consensus through well-crafted RFCs and navigate ambiguous, high-growth environments.
  • Experience integrating AI/LLMs into developer workflows or user-facing products, showing a forward-thinking approach to engineering.

📝 Tips for Applying to Omnidian

1

In your resume, highlight specific examples of architecting systems that scaled (e.g., handling 10x traffic growth) and mention the AWS services you used (e.g., EKS, Lambda, DynamoDB).

2

Tailor your cover letter to Omnidian's mission: explicitly connect your past work to sustainable energy or high-availability monitoring systems.

3

Show evidence of leading through influence: include examples where you drove consensus for a technical decision (e.g., RFC you authored) across multiple teams.

4

If you have AI/LLM experience, detail how you integrated it into developer tooling or user features—this is a key differentiator.

5

Prepare a portfolio of RFCs or design documents you've written; Omnidian likely values written communication and technical clarity.

✉️ What to Emphasize in Your Cover Letter

["Emphasize your experience in platform architecture and scalability, linking it to Omnidian's need to support a growing fleet of solar systems.", 'Show passion for clean energy and how your technical skills can directly contribute to reducing carbon emissions.', 'Highlight your leadership style: influence without authority, consensus-building, and mentoring—key for a Principal role.', "Mention specific AWS/Kotlin/React projects you've led, and if possible, any experience with real-time monitoring or diagnostics."]

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🔍 Research Before Applying

To stand out, make sure you've researched:

  • → Read Omnidian's blog or case studies to understand their current platform challenges and how they talk about their technology.
  • → Research their competitors (e.g., SunPower, Tesla Solar) and how Omnidian differentiates with monitoring and diagnostics.
  • → Check out their engineering team on LinkedIn or GitHub to understand the tech stack and team culture.
  • → Look into their recent funding or growth milestones to gauge the scale and pace of their expansion.

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Design a scalable architecture for a solar monitoring platform that ingests real-time data from millions of devices—consider AWS services, data pipelines, and cost optimization.
2 How would you drive consensus on a controversial architectural decision (e.g., monolith vs. microservices) across engineering teams?
3 Describe a time you improved developer experience (e.g., CI/CD, internal tools) and how you measured success.
4 How would you integrate AI/LLMs into Omnidian's platform to enhance diagnostics or developer workflows?
5 Walk through your experience with Kubernetes (EKS) in production: challenges, scaling, and monitoring.
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⚠️ Common Mistakes to Avoid

  • Don't focus solely on your individual contributions—this role requires leadership and influence; highlight team impact.
  • Avoid generic statements about 'passion for clean energy' without backing them up with specific actions or projects.
  • Don't overlook the AI/LLM requirement; if you lack experience, show eagerness to learn and transferable skills (e.g., ML ops, data pipelines).

📅 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 Omnidian!

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