Application Guide

How to Apply for Software Engineer II (API Platform)

at Kaluza

🏢 About Kaluza

Kaluza is uniquely positioned at the intersection of energy and technology, using intelligent software to help energy suppliers drive decarbonisation. Their Energy Intelligence Platform combines data, AI, and real-time decision-making to turn energy complexity into growth opportunities for partners like OVO, AGL, ENGIE, Volvo, and Volkswagen. Working here means contributing to a clean, electrified future while being part of a global team with operations across Europe, North America, Asia, and Australia.

About This Role

As a Software Engineer II on the API Platform team, you'll take ownership of delivering discovery work and technical improvements that enhance Kaluza's API capabilities. This role is impactful because you'll be building the foundational platform that enables energy companies to leverage data and AI for decarbonisation efforts, directly supporting Kaluza's mission to make clean energy dependable and affordable through seamless coordination.

💡 A Day in the Life

A typical day might involve collaborating with your API Platform team to design new API capabilities that enable real-time energy data integration, then implementing technical improvements to existing API services based on performance metrics. You'll likely participate in cross-team discussions about how different parts of Kaluza's platform can leverage your API work to support energy suppliers' decarbonisation efforts.

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🎯 Who Kaluza Is Looking For

  • Has 2-4 years of professional experience building and maintaining API platforms or similar distributed systems
  • Demonstrates ownership mentality with experience delivering both discovery work (exploring new solutions) and technical improvements (optimizing existing systems)
  • Possesses strong collaboration skills to work effectively within the API Platform team and across engineering teams at Kaluza
  • Shows genuine interest in Kaluza's mission of energy decarbonisation and understands how API platforms enable intelligent energy solutions

📝 Tips for Applying to Kaluza

1

Explicitly mention your experience with API platform development in your resume - don't make them guess

2

Research Kaluza's specific energy partners (OVO, AGL, ENGIE) and mention how API platforms could serve their needs

3

Address the hybrid work requirement by showing you can collaborate effectively in both remote and in-person settings (London/Bristol/Edinburgh)

4

Since they don't offer visa sponsorship for this role, clearly state your right to work in the UK upfront

5

Connect your technical experience to energy or sustainability contexts, even if indirectly - show you understand the domain

✉️ What to Emphasize in Your Cover Letter

["Explain why you're specifically interested in API platform work within the energy sector, not just any software engineering role", 'Describe a specific example where you took ownership of both discovery work AND technical improvements in a previous role', "Demonstrate your understanding of how API platforms enable real-time decision-making and data integration (key to Kaluza's value proposition)", "Express genuine enthusiasm for Kaluza's mission of driving decarbonisation through intelligent software"]

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🔍 Research Before Applying

To stand out, make sure you've researched:

  • → Study Kaluza's specific energy partners (OVO, AGL, ENGIE, Volvo, Volkswagen) and understand their energy challenges
  • → Research Kaluza's joint venture with Mitsubishi Corporation in Japan to understand their global strategy
  • → Look into the UK's energy decarbonisation initiatives and how technology platforms support them
  • → Review any available information about Kaluza's technical stack or engineering blog posts to understand their technology choices

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 Walk me through your experience designing and maintaining API platforms - what challenges did you face and how did you solve them?
2 How would you approach balancing discovery work (exploring new solutions) with technical improvements (optimizing existing systems)?
3 What do you understand about Kaluza's Energy Intelligence Platform and how API platforms contribute to it?
4 Describe a time you collaborated across teams to deliver an API-related project - what was your role and what did you learn?
5 How do you stay current with API technologies and patterns, and which do you think are most relevant for energy sector applications?
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⚠️ Common Mistakes to Avoid

  • Applying without addressing the hybrid work requirement (London/Bristol/Edinburgh locations) or needing visa sponsorship
  • Presenting generic API experience without connecting it to platform development or distributed systems
  • Focusing only on technical skills without showing understanding of or interest in the energy/decarbonisation domain

📅 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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