Application Guide

How to Apply for Senior Engineer I

at Kaluza

🏢 About Kaluza

Kaluza stands out as a technology company specifically focused on enabling energy suppliers to accelerate decarbonization through intelligent software. Unlike generic tech firms, their mission directly tackles climate change by modernizing the energy grid. Working here means contributing to a tangible environmental impact while solving complex technical challenges at scale.

About This Role

As a Senior Engineer I at Kaluza, you'll design and build scalable backend services using TypeScript/Node.js to power real-time features for energy suppliers. This role is impactful because you'll own services end-to-end—from architecture to production monitoring—that directly help utilities manage renewable energy integration and grid reliability. You'll be leading by example in a collaborative environment focused on customer-focused decarbonization solutions.

💡 A Day in the Life

A typical day might start with a stand-up discussing progress on building a new event-driven feature for energy data processing, followed by hands-on coding in TypeScript to implement a scalable service using AWS Lambda and SQS. You'd collaborate with product managers on requirements, review teammates' code with a focus on quality, and spend time monitoring production services to ensure reliability for energy suppliers.

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Interview Prep

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🎯 Who Kaluza Is Looking For

  • Has 4+ years building backend applications with TypeScript/Node.js and is passionate about event-driven systems using message queues
  • Demonstrates hands-on experience with AWS serverless architectures (Lambda, SQS, DynamoDB) and can optimize both SQL and NoSQL databases
  • Shows leadership through code quality, mentoring, and fostering best practices—not just technical skills but team contribution
  • Is genuinely motivated by Kaluza's decarbonization mission and understands how reliable software enables energy transition

📝 Tips for Applying to Kaluza

1

Highlight specific examples of event-driven systems you've built—mention the message queue technology (e.g., SQS, Kafka) and how they ensured reliability

2

Quantify your AWS serverless experience: mention specific services you've used (Lambda, API Gateway, DynamoDB) and scalability metrics

3

Tailor your resume to show ownership of services from architecture to production monitoring—include tools like CloudWatch or Datadog

4

Demonstrate knowledge of energy/decarbonization challenges in your cover letter or interview—show you understand the industry context

5

Include a link to GitHub/GitLab showcasing TypeScript/Node.js code with clean architecture, testing, and documentation relevant to backend services

✉️ What to Emphasize in Your Cover Letter

["Explain why Kaluza's mission to decarbonize energy resonates with you personally or professionally", 'Provide a concrete example of an event-driven backend service you built or optimized, emphasizing scalability and reliability', "Describe how you've mentored other engineers or contributed to engineering culture in past roles", 'Connect your AWS/serverless experience to how it could help Kaluza build reliable solutions for energy suppliers']

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🔍 Research Before Applying

To stand out, make sure you've researched:

  • → Kaluza's parent company OVO Energy and their 'Plan Zero' commitment—understand the broader decarbonization strategy
  • → The specific challenges energy suppliers face in integrating renewables (e.g., grid balancing, smart meter data)
  • → Kaluza's tech blog or GitHub for insights into their stack and engineering culture
  • → Recent news about Kaluza's partnerships with energy companies to see what problems they're solving

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Designing a scalable event-driven system for real-time energy data processing using AWS serverless services
2 How you would optimize database performance for a high-write workload (e.g., smart meter data ingestion)
3 Discussing a time you led by example—improving code quality, mentoring, or implementing best practices on a team
4 Troubleshooting a production issue in a distributed system with message queues—what tools and processes you'd use
5 How you balance technical decisions with product and customer needs in a collaborative environment
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⚠️ Common Mistakes to Avoid

  • Submitting a generic resume without tailoring it to backend TypeScript/Node.js, event-driven systems, and AWS serverless
  • Failing to demonstrate ownership—focusing only on coding tasks without mentioning architecture, monitoring, or end-to-end responsibility
  • Showing no interest in or knowledge of the energy/decarbonization industry that Kaluza operates in

📅 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 Kaluza!

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