CLYSO GmbH

Role Description As part of our Operations team, you will serve as the backbone for data-intensive applications. We operate a hybrid infrastructure: high-availability enterprise storage meets modern software-defined storage solutions. You will ensure stability, scale our customers’ environments, and drive automation—all within an environment where data confidentiality is paramount. - Administration and troubleshooting of our storage infrastructure (NetApp MetroCluster and Ceph / Rook). - Provisioning storage services for Kubernetes and OpenStack (Manila & Swift). - Continuous optimization of operational processes using Ansible (Infrastructure as Code). - Participating in a rotating on-call schedule (up to one week per month) to ensure the high availability of our systems. - Analyzing and resolving issues in 2nd and 3rd level support while adhering to strict VS-NfD guidelines. Qualifications - At least 2 years of solid experience in administering either NetApp MetroCluster or Ceph. - Willingness to familiarize yourself with the other technology (NetApp or Ceph) as well as with Kubernetes and OpenStack. - Willingness to undergo a security clearance (SÜ2). Handling confidential information (VS-NfD) responsibly is second nature to you. - Taking on on-call duties (approx. one week per month) is compatible with your personal life. - Practical experience working with Ansible is a plus. Benefits - 100% Remote Work: True flexibility with no requirement to be physically present in the office. - Secure Job: A permanent, full-time position in an environment that places the highest priority on data confidentiality. - SÜ2 Support: Active support throughout the security clearance process. - Technological bridge: Work on a stack that combines the best of classic high availability (MetroCluster) and modern cloud innovation (Ceph/K8s). - Paid on-call duty: Additional compensation for your on-call hours outside of core working hours. - Owner-managed company: Short decision paths and high adaptability. - Opportunity to grow in a dynamic, international technology environment. - Modern office in the beautiful Schwabing district of Munich. - Attractive benefits, including: Deutschlandticket (Job Ticket) subsidy, Company health insurance scheme (bKV), Wellpass, additional social benefits and team events.

Role Description For our team in India, we are looking for a Ceph Storage Engineer. - Cluster Maintenance: Perform major/minor version upgrades and manage cluster scaling and capacity expansion. - Deep-Dive Debugging: Use Ceph logs and diagnostic tools to identify and resolve issues in production environments. - Linux & Hardware Tuning: Optimize the Linux OS (kernel, networking, and I/O) and server hardware (BIOS/firmware) for peak Ceph performance. - Operational Automation: Create scripts and automation to handle routine maintenance and CRUSH map cleanups. - Lifecycle Management: Execute major and minor Ceph version upgrades to ensure cluster stability and security. - Performance Engineering: Conduct deep-dive performance investigations and tuning if required. - Automation: Develop and maintain automation for operational tasks, including capacity expansion, CRUSH map optimizations, and routine maintenance. - Cluster Architecture: Build and configure new Ceph clusters from the ground up to support our rapidly scaling infrastructure. - Incident Response: Participate in a 24x7 on-call rotation, monitoring cluster health and resolving complex issues efficiently. - Upstream Contribution: Participate in the Ceph community through bug fixes, feature enhancements, and code reviews if required. Qualifications - Storage Expertise: Proven experience managing and tuning production-grade Ceph clusters. - Deep understanding of server hardware profiles, disk controllers, and low-level system troubleshooting. - Experience using tools like Ansible, Python, or Go to automate repetitive infrastructure tasks. - A desire to contribute to the upstream Ceph ecosystem (or a history of doing so). - An appetite for public speaking and presenting at industry conferences would be a bonus. - Ability to thrive in a fast-paced environment and handle high-pressure troubleshooting scenarios. - Exceptional problem-solving skills with meticulous attention to detail. Benefits - You won't just be "keeping the lights on." You will be part of a collaborative team that treats storage as a product. - We value engineering over manual intervention and encourage our team to spend time on upstream contributions that benefit the wider community.

Your mission - Develop, maintain, and optimize Ceph and RadosGW open source code. - Provide deep technical insights and expert-level support for our operations and support teams. - Troubleshoot and fix complex issues. Your profile - 3 years of professional experience in C++ development. - Nice-to-have knowledge or interest in Ceph, RadosGW or storage solutions in general.. - Excellent analytical and problem-solving skills. - Solid understanding of Linux environments and networking principles. - Solid knowledge of git and open source communities. - Personal responsibility and self-organization - Analytical and solution-oriented thinking - Strong communication skills and ability to work in a team - Flexibility and adaptability to new technologies - Passion for software development and cloud technologies Why us? - Owner-managed company: short decision paths and high adaptability - Opportunity to grow in a dynamic, international technology environment - Flexible working hours with home office options - Collaborative environment with close interaction across teams - Modern office in the beautiful Schwabing district of Munich - Attractive benefits, including: Deutschlandticket (Job Ticket) subsidy, Company health insurance scheme (bKV), Wellpass, Additional social benefits and team events. Kontaktinformationen

Your mission About the Role: We are seeking a highly curious and tenacious Investigator to join our team. While we have "builders" focused on creating tests, we lack a dedicated individual to examine failures, verify test validity, and deeply understand why they fail. This role is crucial for establishing amazing feedback loops that bridge development and support, ultimately enabling us to ship without fear. If you thrive on digging through data, embrace complex debugging, and enjoy finding the critical clue in 20,000 lines of logs, this is the role for you. While we do hope for a candidate who possesses all the relevant skills for this position, we are also pragmatic: demonstrating a growth mindset and a willingness to learn and ramp-up knowledge is ultimately more valuable. Your profile The Mindset We Value: - Investigator: Driven by intense curiosity ("Why did it fail?"). - Empirical: Don't guess – find a way to get the data. - Observability Minded: Committed to using data and metrics to understand the system's behavior. - Patience: The fortitude required to tackle complex, deep-seated issues. - Pragmatic: Delivers results that move the needle. Required Skills & Experience: - Coding & Scripting: Strong proficiency in Python, bash, and potentially Go, for automation (including experience with tools like teuthology). - Debugging & Tracing: Expertise with system internals (strace, lsof, /proc), tracing technologies (eBPF), and general debugging (gdb). - System & Resource Analysis: Ability to analyze system resources, including load, iowait, and zombie processes. - Storage & Networking: Deep understanding and debugging experience with storage concepts (S3, HTTP errors, POSIX, ACLs, flock, etc.) and networking (tcpdump, wireshark). - Domain Expertise: Familiarity with tools for breaking storage (fio, fsx, elbencho, xfs test suite) and understanding of distributed systems principles (experience with tools like Jepsen or Antithesis is a plus). - Code Reading: Reading ability in C/C++ Why us? What We Provide You: - Autonomy and Ownership: We encourage you to work independently and take ownership of your tasks, while providing a supportive team environment for collaboration and guidance. - Mentorship and Growth: We recognize that mastering complex topics requires time, focused effort, and expert guidance. Your colleagues will actively support you to ensure your success and continuous development. - Owner-managed company: short decision paths and high adaptability - Opportunity to grow in a dynamic, international technology environment - Flexible working hours - Collaborative environment with close interaction across teams Kontaktinformationen