Application Guide

How to Apply for Senior Platform Backend Engineer - Battery Storage

at Plus Power

🏢 About Plus Power

Plus Power is an energy storage market leader with a 10+ GW portfolio across 25+ states, transforming North American electric grids into cleaner, more versatile infrastructure. The company's focus on standalone energy storage—cheaper and faster to build than fossil alternatives—combined with a data-driven, intentional approach to development and operations makes it a unique player in solving climate challenges profitably.

About This Role

As a Senior Platform Backend Engineer, you will design and build scalable backend systems that power Plus Power's energy storage platform, enabling real-time monitoring, control, and optimization of battery assets. Your work directly supports the company's mission to accelerate grid decarbonization by ensuring reliable, high-performance infrastructure for managing a growing portfolio of energy storage projects.

💡 A Day in the Life

A typical day might start with a standup to discuss progress on building a new API for asset monitoring, then dive into coding a microservice for data ingestion. Afternoon could involve pairing with a data engineer to optimize pipeline performance, followed by reviewing a design doc for a fault-tolerant architecture. You'll also collaborate with operations to troubleshoot a production issue, ensuring minimal downtime for live battery systems.

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Interview Prep

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🎯 Who Plus Power Is Looking For

  • Experienced in building distributed systems with languages like Go, Python, or Java, and familiarity with cloud-native architectures (AWS, GCP, or Azure).
  • Strong understanding of energy storage systems, grid operations, or renewable energy markets, with ability to translate domain knowledge into technical requirements.
  • Proven track record of designing and maintaining high-availability APIs, data pipelines, and microservices in a production environment.
  • Collaborative mindset with experience working cross-functionally with product, operations, and data science teams to deliver impactful solutions.

📝 Tips for Applying to Plus Power

1

Highlight any experience with energy storage, battery management systems, or real-time control systems in your resume and cover letter.

2

Showcase projects where you built scalable backend services for IoT or distributed energy resources, emphasizing performance and reliability.

3

Demonstrate familiarity with Plus Power's technology stack (mention specific languages or cloud services you've used) and how you've applied them in similar contexts.

4

Tailor your application to emphasize your ability to work in a fast-paced, mission-driven environment—mention experience with agile development and rapid iteration.

5

Include links to GitHub or portfolio examples of backend systems you've designed, especially if related to energy or industrial IoT.

✉️ What to Emphasize in Your Cover Letter

['Express passion for combating climate change through grid-scale energy storage and how your backend engineering skills can directly contribute.', 'Emphasize experience with building reliable, scalable backend infrastructure for real-time applications (e.g., monitoring, control systems).', "Mention familiarity with Plus Power's data-driven approach and how you've used data to optimize system performance in past roles.", 'Highlight your ability to collaborate across teams (e.g., with hardware engineers, data scientists) to deliver end-to-end solutions.']

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🔍 Research Before Applying

To stand out, make sure you've researched:

  • → Read Plus Power's case studies or press releases about their energy storage projects to understand the scale and impact of their work.
  • → Research the company's data-driven development approach and how they use analytics to optimize battery operations.
  • → Look into the regulatory landscape for standalone energy storage in North America to understand market drivers.
  • → Explore the technical challenges of integrating battery storage with grid operators (e.g., ISO/RTO markets) to show domain awareness.

💬 Prepare for These Interview Topics

Based on this role, you may be asked about:

1 How would you design a backend system to handle real-time data ingestion from thousands of battery storage units?
2 Describe your experience with microservices architecture and how you ensure fault tolerance and scalability in production.
3 How do you approach data modeling for time-series data from energy storage assets?
4 Explain a time you had to balance technical debt with new feature development in a fast-moving startup environment.
5 What is your experience with cloud services (AWS/GCP/Azure) and containerization (Docker/Kubernetes) for deploying backend services?
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⚠️ Common Mistakes to Avoid

  • Submitting a generic application without referencing Plus Power's specific mission or technology stack.
  • Overlooking the importance of domain knowledge—failing to connect your backend experience to energy storage use cases.
  • Not demonstrating an understanding of real-time system requirements (e.g., latency, reliability) critical for grid applications.

📅 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 Plus Power!

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