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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Cybersecurity Engineer - **Company:** Fluence Energy - **Location:** Erlangen, Germany - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Software System Penetration Testing, Automation of Tests, Bash Shell, Ubuntu (Operating System), Cloud Computing, Communications Protocols, CompTIA Security+, Cyber Security, Computer Engineering, Linux, Domain Name System (DNS), Identity and Access Management, Networking Hardware, Virtual Private Networks (VPN), Python (Programming Language), Network Security, Linux System Administration, Modbus, Message Queuing Telemetry Transport (MQTT), Routing, Network Segmentation, Network Time Protocols, Nmap, Red Hat Enterprise Linux, Remote Access Technology, Ansible, Zero Trust Network Access, OPC Unified Architecture, Security Software, Security Information and Event Management, Software Engineering, TCP/IP, Transmission Control Protocol (TCP), Virtual Local Area Networks, Virtualization Technology, Software Vulnerability Management, Data Logging, Scripting, Firewalls (Computer Science), Infrastructure Automation Frameworks, Information Technology, Deployment Automation, Process Control Systems, Patch Management, Nessus, Operational Systems, CIS Benchmarks, Splunk, Qualys, Docker, Vulnerability Analysis, Vmware - **Published:** August 22, 2026 - **Apply:** https://www.adzuna.de/details/5849689246 ## About the Role * Bachelor's or Master's degree in Cybersecurity, Computer Science, Computer Engineering, Electrical Engineering, or a related technical discipline, or equivalent professional experience. * 5+ years of cybersecurity experience, preferably including Industrial Control Systems (ICS), Operational Technology (OT), energy, utilities, or other critical infrastructure environments. * Strong understanding of IEC 62443, particularly IEC 62443-2-1, 3-2, 3-3, and 4-2. * Familiarity with European cybersecurity requirements such as NIS2 and the EU Cyber Resilience Act (CRA). * Hands-on experience with vulnerability management, patch management, system hardening, risk assessments, threat modeling, and security monitoring. * Strong Linux administration and security knowledge, preferably Ubuntu or similar enterprise Linux environments. * Strong networking fundamentals, including TCP/IP, routing, switching, VLANs, firewalls, VPNs, DNS, NTP, network segmentation, and secure remote access. * Understanding of OT/ICS architectures and industrial communication protocols such as Modbus TCP, DNP3, IEC 61850, MQTT, and OPC UA. * Experience with cybersecurity tools such as SIEM, vulnerability scanners, endpoint security/EDR, network security monitoring, and penetration-testing tools. * Experience with scripting or automation using technologies such as Python, Bash, Ansible, or similar tools. * Ability to troubleshoot complex cybersecurity, Linux, and network-related issues in production and customer environments. * Strong written and verbal communication skills with the ability to work directly with engineering teams and customers. * Ability to work effectively across international and cross-functional engineering teams., * Experience within Battery Energy Storage Systems (BESS), renewable energy, utilities, power generation, or other critical infrastructure. * Experience implementing or assessing systems against IEC 62443 Security Levels and Zones & Conduits architectures. * Experience with SIEM/OT monitoring platforms such as Wazuh, Dragos, Splunk, or equivalent technologies. * Experience with penetration testing and vulnerability assessment tools such as Nessus, Qualys, OpenVAS, Nmap, or similar technologies. * Experience with Docker, VMware/virtualization, AWS/cloud infrastructure, and infrastructure automation. * Familiarity with SBOM, vulnerability disclosure, CVE management, secure software development, and product security lifecycle practices. * Cybersecurity certifications such as CISSP, GICSP, GIAC, CISM, IEC 62443/ISA Cybersecurity Certificates, Security+, or equivalent. * Networking certifications such as CCNA or CCNP. ## Description The Cyber Security Engineer is responsible for protecting utility-scale Battery Energy Storage Systems (BESS) and operational technology (OT) environments by ensuring compliance with cybersecurity regulations, industry standards, and customer requirements. This role supports cybersecurity activities throughout the project lifecycle, including system design, deployment, operation, and maintenance, with a focus on risk management, vulnerability remediation, security monitoring, and secure network architecture. The engineer works closely with customers, suppliers, and cross-functional engineering teams to implement and maintain robust cybersecurity controls, support regulatory compliance (including IEC 62443, NIS2, CRA, and ISO 27001), and strengthen the overall security posture of Fluence's energy storage solutions., * Perform cybersecurity assessments against applicable regulations, customer requirements, and industry standards, including IEC 62443, NIS2, EU Cyber Resilience Act (CRA), and ISO 27001. * Support cybersecurity requirements throughout the project lifecycle, including system design, deployment, commissioning, operation, and maintenance of utility-scale energy storage systems. * Review customer cybersecurity requirements during project contracting and support responses to RFIs, RFQs, security questionnaires, and technical cybersecurity discussions. * Perform and coordinate vulnerability assessments, vulnerability remediation, patch management, system hardening, and security baseline validation for OT and Linux-based systems. * Support development and implementation of cybersecurity monitoring capabilities, including SIEM, endpoint monitoring, vulnerability scanning, logging, alerting, and security dashboards. * Conduct and support threat modeling, cybersecurity risk assessments, penetration testing activities, and security architecture reviews. * Support cybersecurity incident response activities, tabletop exercises, root-cause analysis, and development of remediation plans. * Review and improve OT network security architecture, including network segmentation, firewalls, VPNs, secure remote access, identity and access management, and Zero Trust principles. * Work with engineering teams to integrate cybersecurity controls into products, infrastructure, deployment automation, and operational processes. * Support secure configuration and hardening of Linux-based systems, network devices, virtualization platforms, and industrial control systems. * Coordinate cybersecurity activities with customers, suppliers, certification laboratories, and internal engineering teams across Europe. * Develop technical documentation, cybersecurity procedures, implementation guidelines, security baselines, and customer-facing cybersecurity documentation. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) ## Related Articles - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Best Coding Boot Camps in Germany](https://www.wearedevelopers.com/magazine/237-best-coding-boot-camps-in-germany) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [IT Salaries in Germany](https://www.wearedevelopers.com/magazine/287-it-salaries-in-germany)