How to apply for DevOps / Cloud Infrastructure Engineer (m/w/d)

About Tesvolt

Tesvolt Energy builds virtual power plants that let small and medium battery storage operators trade on the energy exchange. The company aggregates these smaller storage capacities and connects them to the grid through top traders. This is a chance to work on data-heavy, technically demanding infrastructure that directly supports the energy transition.

About the role

You will own the cloud infrastructure from architecture to service selection, building modular and reusable infrastructure as code. You will design CI/CD pipelines for fast and secure deployments, and embed cybersecurity across the full stack. The role is remote and full-time, focused on making developer teams effective while keeping systems stable, secure, and scalable.

A typical day

A typical day might involve writing or reviewing Terraform modules, adjusting CI/CD pipelines, and checking security configurations such as IAM roles or network rules. You would also talk with developers and analysts about infrastructure needs for the virtual power plant and energy trading systems. The job description does not specify daily routines, so ask about team ceremonies and on-call expectations in the interview.

Who Tesvolt is looking for

• Has hands-on experience designing and operating cloud infrastructure, including evaluating services and choosing the right solution per use case.
• Builds and maintains infrastructure as code, ideally with Terraform, in a modular and reusable way.
• Designs and optimizes CI/CD pipelines for reliable and secure deployments.
• Applies security across the stack: least-privilege IAM, secrets management, network segmentation, vulnerability scanning, and compliance.

Tips for this application

• In your CV or cover letter, name the cloud providers and IaC tools you have used. The job description mentions Terraform by example, so call out Terraform or comparable tools explicitly.
• Describe one or two CI/CD pipelines you built or improved, including what made them faster or more secure.
• List concrete security practices you implemented, such as least-privilege IAM policies, secrets management, network segmentation, or vulnerability scanning.
• Connect your work to the company's domain: mention virtual power plants, battery storage, or energy trading if you have relevant experience or explain why the domain interests you.
• Since the role is remote, state your time zone and how you handle asynchronous collaboration with developers and analysts.

What to cover in your cover letter

['Your experience with infrastructure as code, specifically modular and reusable Terraform or equivalent.', 'A concrete example of a CI/CD pipeline you designed or optimized for speed, reliability, and security.', 'How you embed cybersecurity across the stack, from IAM to network segmentation to vulnerability scanning.', 'Why you want to apply infrastructure skills to renewable energy storage and virtual power plant operations.']

Research before applying

• Read how Tesvolt Energy aggregates battery storage into virtual power plants and trades on the energy exchange.
• Look up the parent company Tesvolt and its commercial battery solutions to understand the hardware side of the business.
• Check which cloud providers and IaC tools Tesvolt Energy currently uses, or be ready to ask in the interview.
• Understand the basics of flexibility trading and why smaller storage operators previously could not access it.

Likely interview topics

Based on the job description, expect questions about:

• How you decide which cloud services to use for a given workload, including trade-offs between cost, performance, and security.
• A walkthrough of a Terraform module you wrote: how you structured it, made it reusable, and managed state.
• How you design a CI/CD pipeline that is both fast and secure, including secret handling and deployment gates.
• How you implement least-privilege IAM and network segmentation in a cloud environment.
• How you would support developers and analysts who need reliable infrastructure for data-heavy energy trading applications.

Common mistakes to avoid

• Sending a generic DevOps cover letter that does not mention energy storage, virtual power plants, or the trading context.
• Claiming security experience without naming specific practices like IAM policies, secrets management, or vulnerability scanning.
• Listing tools without showing how you used them to build modular, reusable infrastructure or secure pipelines.