Principal Security Engineer

Number of employees


Paris, FR, France

Posted on: 2023-11-17

Category: energy

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Employment type:

Full time

Experience required:



Salary not provided

About the company:

We're on a mission to make a big green dent in the universe by building a truly sustainable energy system globally.

That means making power greener, smarter, and more affordable for everyone.

We put customers at the heart of everything we do: with always-fair prices, transparency and outrageous customer service.

We drive system change: with transformative tech to make renewable energy the norm and end global reliance on fossil fuels.

Octopus Energy Group is made up of 10 businesses spanning 6 countries across 3 continents, including: Octopus Energy Retail, Kraken Technologies, Octopus Energy Generation, Kraken Flex, Octopus Electric Vehicles, and the Octopus Centre for Net Zero. More on OEG @

The energy industry is undergoing the largest transformation since industrialisation at an unprecedented rate of change and we are positioning ourselves to be at the heart of that change. 

Our aim is to be the leading global provider of solutions that enable customers to release £30bn of value per annum from distributed energy resources (DERs). We are building a Software as a Service (SaaS) subscription business with a global addressable market of £2.4 billion per annum, by digitally connecting hundreds of thousands of DERs with energy markets.

We have already attained a market leading position and KrakenFlex is a recognised thought leader and innovator in the industry. Our efforts have not gone unnoticed and we are pleased to announce that we now have the full support and backing of Octopus Energy, an award-winning UK energy supplier who share our passion and values.

We are seeking a Principal Security Engineer who is skilled in security architecture, deployment, and management. This role will help develop and lead the technical security strategy and its implementation, and will be highly autonomous. The position will work closely with our delivery and integrations teams to improve the overall security, quality and scalability of our product build, deployment and monitoring. 

If this sounds like you then we'd love to hear from you.

Studies have shown that some groups of people, like women, are less likely to apply to a role unless they meet 100% of the job requirements. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. Across Octopus, we're looking for genuinely decent people who are honest and empathetic. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.

What you'll do

  • Drive technical decisions to develop platform and security engineering roadmap
  • Help develop and implement the technical security strategy for the organisation
  • Act as a technical security expert within the business, providing advice and guidance to other team members and the wider business
  • Lead the development of robust and secure CI/CD pipelines
  • Lead the development of security tooling
  • Plan and implement solutions for backup and recovery, high availability, key management, and other strategic initiatives
  • Setup and maintain monitoring, metrics & reporting systems for fine-grained security observability and actionable alerting
  • Collaborate with external pen-testing company to evaluate the security for all aspects of our AWS implementation and external resources @Ben Freke to add more
  • Work with our delivery teams to ensure our services adhere to the AWS Well-Architected Framework (Operational Excellence, Security, Reliability, Performance Efficiency, Cost Optimisation and Sustainability)

  • What you'll need

  • A strong technical security background
  • Demonstrated experience in communicating and influencing key stakeholders including business leaders, engineers and customers
  • Multiple years of experience working with cloud technologies, preferably with a security focus. We work with AWS, but we understand the skills are transferable
  • Strong experience in implementing and automating security best-practices
  • Proficient with DevOps methodologies such as CI/CD, version control (we use GitHub) and full-stack repeatability
  • Knowledge of incident response planning, security event management, tooling and detection
  • Ability to prioritise tasks and work independently
  • Experience working with infrastructure as code tools such as CloudFormation, Terraform and CDK.

  • It would be great if you had

  • Foundational networking knowledge, such as switching, firewalls, routing and DNS
  • AWS networking knowledge, such as VPCs, Transit Gateways and how this works in a multi-region environment
  • Experience with AWS SecurityHub, GuardDuty, Config, Inspector, CloudTrail and other AWS Security services
  • Software development experience in either Typescript or Python
  • Experience applying security risk assessment methodologies

  • Why else you'll love it here

  • Wondering what the salary for this role is? Just ask us! On a call with one of our recruiters it's something we always cover as we genuinely want to match your experience with the correct salary. The reason why we don't advertise is because we honestly have a degree of flexibility and would never want salary to be a reason why someone doesn't apply to Octopus - what's more important to us is finding the right octofit!
  • Octopus Energy is a unique culture. An organisation where people learn, decide, and build quicker. Where people work with autonomy, alongside a wide range of amazing co-owners, on projects that break new ground. We want your hard work to be rewarded with perks you actually care about! We won best company to work for in 2022, on Glassdoor we were voted 50 best places to work in 2022 and our Group CEO, Greg has recorded a podcast about our culture and how we empower our people 
  • Visit our perks hub - Octopus Employee Benefits
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