Dear all, currently we are searching for a freelance Ceph developer (m/w/d). Ceph Developer (m/w/d) C++ / Python Start: asap Utilization: 100% (40 hours per week desired, minimum is 30 hours per week) Duration: 6 months+ Location: 100% Remote - CET Timezone Language: English Contract type: Freelance / B2B contract As a Ceph Developer, you will work on the core components of the Ceph storage platform, with a focus on performance optimization, feature development, and long-term maintainability. You will contribute to both upstream Ceph and internal forks, designing and implementing enhancements across modules like RGW, RADOS, RBD, and CephFS. This role combines deep system-level development with the operational realities of running Ceph in large-scale, Kubernetes-driven cloud-native environments. Team Activities 1. Design and implement new features in Ceph (RGW, RADOS, RBD, CephFS) 2. Optimize storage system performance, scalability, and reliability 3. Troubleshoot distributed storage issues and debug low-level system behavior 4. Participate in upstream Ceph development and community discussions 5. Integrate Ceph with Kubernetes via Rook and CSI drivers 6. Monitor and improve system observability using telemetry and metrics 7. Plan and execute development tasks using Agile methodologies 8. Contribute to technical documentation, design reviews, and internal knowledge sharing Required Skills 1. Strong proficiency in C++ and Python (5+ years) 2. Hands-on experience with Ceph (any of RGW, RADOS, RBD, CephFS) 3. Solid understanding of Linux internals (I/O, memory management, threading) 4. Familiarity with Kubernetes, Rook, and Ceph CSI drivers 5. Experience with Git, GitHub, and CI/CD pipelines 6. Exposure to large-scale infrastructure or cloud-native environments 7. Proficiency with observability tools (Prometheus, Grafana, etc.) Optional Skills 1. Contributions to open-source projects (especially Ceph) 2. Experience with cloud platforms: AWS, Azure, or OpenStack 3. Familiarity with performance profiling tools and storage benchmarks 4. Knowledge of S3 and Swift protocols and object storage semantics Please contact me for applications or questions at jonathan.warnecke@nemensis.de Alternative you can text me on LinkedIn: https://www.linkedin.com/in/jonathan-warnecke-5187baba/ Kind regards Jonathan Freundliche Grüsse / Best Regards Jonathan Warnecke Account Director & Nearshore Delivery Lead Nemensis AG | | HamburgEin Unternehmen der Firmengruppe I. K. Hofmann GmbH Überseeallee 1020457 Hamburg Direct: +49 40 3609394-43 | Mobile: +4915119501580 mail: Jonathan.Warnecke@nemensis.de web: www.nemensis.de projekte: jobs.nemensis.de Folge uns auf: nemensis AG Firmensitz: Überseeallee 10 | 20457 Hamburg HRB. NR.: 181535 Hamburg | UST.-IDNR.: DE310161615 Aufsichtsratsvorsitzende: Frau Ingrid Hofmann Vorstand: Heinz Ostermann | Benjamin Walker A member of I. K. Hofmann Dies ist eine vertrauliche Nachricht und nur für den Adressaten bestimmt. Sind Sie nicht namentlich als Empfänger/in erwähnt, werden Sie gebeten, den Absender zu kontaktieren und das E-Mail umgehend von ihrem Computer zu löschen. Zurückhalten, Verbreitung, Versenden, Drucken oder Kopieren dieser Nachricht ist strikt verboten. This message and any files are solely for the use of the person or entity to whom this e-mail is addressed. If you are not named recipient(s) please contact the sender and delete this message from your system. Retention, dissemination, forwarding, printing, or copying of this e-mail is strictly prohibited. Bitte denken Sie an den Umweltschutz, bevor Sie diese E-Mail ausdrucken!
