Security Engineer

Fuse Energy is a forward-thinking renewable energy startup on a mission to deliver a terawatt of renewable energy - fast. We’re combining first-principles thinking with cutting-edge technology to build a radically better energy system. We raised $170M from top-tier investors including Multicoin, Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, Box Group and strategic angels like Nico Rosberg, the Co-Founder of Solana and GPs behind Meta, Revolut, Spotify, Uber and more.

We’re creating a fully integrated energy company: from developing solar, wind and hydrogen projects to real-time power trading and distributed energy installations. By selling directly to consumers, we cut out the middleman, lower costs and pass on savings to customers.

But we’re not stopping there. We’re also building the Energy Network: a decentralised platform of smart devices that rewards users in Energy Dollars for electrifying their homes, shifting usage to off-peak hours, and helping balance the grid. This network strengthens grid stability - a critical foundation for scaling AI data centers and other energy-intensive industries.

We are looking for a motivated and detail-oriented Security Engineer to support and strengthen our security posture as we scale. In this role, you will work closely with senior security and engineering team members to help secure our infrastructure, applications, and data. This is an excellent opportunity to grow your security expertise in a fast-paced, product-focused environment while contributing to real-world systems with meaningful impact.

Responsibilities

Security Engineering & Implementation

• Assist in implementing and maintaining security controls across cloud infrastructure, web applications, and internal systems.
• Support secure configuration of services, including access controls, secrets management, and API security.
• Help review and improve the security of components related to identity, authentication, and transaction workflows. Threat Modelling & Risk Awareness

• Participate in threat modelling exercises and security reviews for new features and system changes.
• Help identify common security risks and misconfigurations, and work with engineers to remediate them.
• Stay informed about common attack vectors and vulnerabilities relevant to modern cloud and web environments. Security Operations & Incident Support

• Assist with monitoring, detection, and investigation of security alerts and events.
• Support incident response activities, including analysis, documentation, and follow-up remediation tasks.
• Help maintain and improve runbooks, alerts, and basic detection mechanisms. Secure Development & Best Practices

• Contribute to secure development practices, including code reviews with a security lens.
• Help document and promote security guidelines for engineers, such as secure coding and secrets handling.
• Support ongoing efforts related to compliance readiness (e.g., evidence gathering, control checks). Collaboration & Learning

• Work closely with engineering and product teams to integrate security into day-to-day development.
• Learn from senior security engineers and actively develop your skills in cloud security, application security, and infrastructure security.Requirements

• Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related field, or equivalent practical experience.
• 2–3 years of experience in a Security Engineer, Software Engineer, Infrastructure Engineer, or similar role with security exposure.
• Foundational understanding of security concepts such as authentication, authorisation, encryption, and secure communication.
• Familiarity with common web and cloud security risks (e.g., OWASP Top 10, IAM misconfigurations).
• Basic experience with AWS and an interest in cloud security best practices.
• Working knowledge of operating systems, networking fundamentals, and software development workflows.
• Strong problem-solving skills and a willingness to learn and grow in a fast-moving environment. Benefits

• Competitive salary and an equity sign-on bonus
• Biannual bonus scheme
• Fully expensed tech to match your needs
• Paid annual leave
• Breakfast and dinner allowance for office based employees