Lediga jobb Cleura AB i Karlskrona

Ceph is the foundation of our storage services. As Ceph R&D Architect, you’ll design and evolve large-scale distributed storage for OpenStack — balancing performance, durability, and cost efficiency. You’ll own architecture and tuning, guide teams through complex change, and contribute upstream to strengthen the ecosystem. Your work will directly define how data flows, scales, and stays resilient across Cleura’s cloud regions.
Cleura is the European cloud built on open source and data sovereignty.
As part of the Iver Group, Cleura provides secure, compliant, and scalable cloud infrastructure across multiple European regions — fully aligned with GDPR and local data protection frameworks.
We are a Gold Member of the OpenInfra Foundation, actively contributing to OpenStack and related open-source communities.
Our mission is to empower organizations to run critical workloads in an open, transparent, and sovereign cloud.

About the team :
You’ll join Cloud Services R&D, Cleura’s core engineering organization responsible for evolving our OpenStack-based platform and surrounding services.
We work in a Spotify-model setup of autonomous Tribes and Squads, each owning a specific area such as IaaS, PaaS, AI & Data, or Integration.
Our culture is built on servant leadership, self-leadership, and collaboration across distributed teams in Sweden, Poland, and beyond.
Expect an environment that values experimentation, open communication, and continuous learning.

Responsibilities:
Deep-dive into Ceph code and architecture (esp. core storage, RADOS, RGW) to optimise performance and scalability for our production workloads.
Profile, benchmark, and troubleshoot performance issues at scale (tens of PB, thousands of clients), identifying architectural or operational bottlenecks.
Lead internal knowledge development and mentorship for Ceph-related competencies across our IaaS and Operations teams.
Actively contribute upstream to the Ceph project:
Submit patches and fixes
Engage in design discussions and community meetings
Influence roadmap for features critical to cloud provider use-cases (e.g., multi-AZ, RGW performance, tiering)
Develop and maintain internal build pipelines and extensions where necessary, ensuring compliance and maintainability.
Partner with Platform Operations to improve observability, maintain stability, and accelerate incident resolution in production clusters.
Collaborate closely with other squads to ensure Ceph capabilities support upcoming roadmap items such as GPU-aaS, Backup-aaS, Bare-metal-aaS, and DB-aaS.


Requirements( Must have):
Proven track record of operating Ceph at scale(multi-petabyte, high-availability clusters) in production.
Strong expertise in C++ developmentfor system-level software (experience with Ceph core components).
Practical experience in performance tuning(e.g., OSD placement, CRUSH maps, BlueStore tuning, cache tiering, RGW optimizations).
Solid knowledge of Linux systems engineering, networking, and storage IO paths.
Required: Strong experience with Ansible(playbooks, roles, collections) for large-scale ops; Python for custom modules, Ceph tooling, and integration workflows.
Nice to have: Gofor ecosystem tooling and performance-sensitive utilities
Hands-on troubleshooting skills with tools such as perf, flamegraphs, and distributed tracing.


Good to have (Merit skills):
Prior contributions to Ceph or other distributed storage projects (patches, reviews, design docs) is highly valued.


Qualification:
Engineering degree in a related field or equivalent experience and training.
or if any certification is required.


Personal Qualities:
We believe success in this role comes from curiosity, ownership, and teamwork.
You’re someone who:
Thrives in collaborative, cross-functional environments.
Communicates clearly and transparently in English (spoken and written).
Enjoys working in distributed teams and takes responsibility for results.
Balances technical depth with practical problem-solving.
Shares knowledge generously and contributes to a culture of learning and trust.


What we offer:
Cleura has a corporate bargaining agreement (kollektivavtal) with Almega
Full-time position
6 weeks vacation
Yearly wellness allowance of 5000 SEK.
Personal competence development plan.


Who would be my direct manager? Daniel Nolte
I'm interested. What's next?
We review applications on an ongoing basis. Please apply as soon as possible. In order to qualify for this position, you must be able to pass a background check.
At Cleura, we believe that a diverse and inclusive workforce drives innovation and success. We welcome applicants from all backgrounds, and we actively strive for a workplace that reflects a broad range of perspectives, skills, and experiences. We are particularly committed to achieving gender balance and fostering an environment where everyone feels respected and empowered to contribute their best.
We encourage candidates of all genders, ethnicities, abilities, and orientations to apply. Together, we can create a work culture that is not only more representative, but also more dynamic and inclusive.
We conduct background checks in the final stages of the Recruitment process.
Type of Employment : Full time position.
Location: Office Locations (Hybrid) or Fully remote.
Start Date : At your earliest convenience. Visa mindre

Cleura is one of the leading European provider of IT infrastructure services based on Open Source. Our company provides public, compliant, private and hybrid cloud solutions based on OpenStack and have data centers around the world. We are a fast growing company & European leaders in infrastructure as a service. We love having fun and working hard. We live to get that smile on our customers face when we solve a problem or simply provide something better than expected. That’s in fact why we go to work the next day.
Cleura is part of Iver , meaning that we have more than 1200 colleagues to support us in reaching our goals of becoming the primary European IaaS alternative.

About the Role
We are looking for an engineer with experience in networking to join our Network and Infrastructure team at Cleura.
They will bridge a gap between operations and development.
This is a great opportunity to work on bleeding-edge technology for a company striving for personal and team development.

About the team
We love Open source! We primarily use Open-source technologies and enjoy contributing back when we can.
We work in an agile way, when it's relevant.
We are disciplined when it comes to testing changes.
We have fun at work.
We spend time to train new people who join the team and adjust how we work together via retrospectives. 10% of our working hours are dedicated to Education. You get to sit in the school bench or even hold the teacher stick yourself.


Responsibilities
Implement new network fabrics, and extend existing ones.
Troubleshoot our network, both legacy and greenfield deployments.
Contribute to improving our documentation and help train fellow co-workers on best deployment practices.
Develop automation for deploying, scaling and maintaining network devices, primarily using Ansible.
Participate in the network design, and suggest improvements.
Contribute in internal tooling for managing our networks.
Investigate new open source tools and technologies to add new services or help improve our operational excellence.


Requirement/ Must have
You have fluent communication skills in English.
You like Ansible, and understand how it works.
You are familiar with Cisco-like CLI.
You know how LACP, STP, OSPF and MP-BGP work.


Good to have
You have experience with CI/CD frameworks like Zuul or GitLab CI.
You have experience with VXLAN BGP EVPN fabrics.
You have operations/deployment experience on the OpenStack platform.
You are able to contribute to python code or write it from the blank page.
You have knowledge on switching hardware and ASICs.


Personal Qualities
Genuinely interested in new technologies, software or hardware.
Well-organised and structured.
You would rather automate a task than do it manually twice.


What we offer
Full-time position with 6-months probationary period.
Leave Policy : 6 weeks vacation.
Remote work : Work anywhere you want from the EU, and whenever you want, as long as you're working 40 hours a week in 5 working days.


I'm interested. What's next?
We'd like to hear from you! We have a few questions we would like to ask you. You'll be able to apply for this position until 30th June 2024. We will start reviewing and inviting applications right away, so make sure you get yours in early.

Type of Employment
Full time position.
If you live in Sweden or Germany, you would be directly employed by Cleura or our German subsidiary.
If you live in any country other than Sweden or Germany (but within EU), we will enter into a contractor agreement as applicable to the legal situation in your country. If a contractor agreement doesn't suit you, we'll work with our group for possible alternative locations.
Salary and compensation will be negotiated during the interview process.

Location
Remote within EU or you are welcome to work in any of our offices in Sweden.

Start Date
Immediate/at your earliest convenience Visa mindre

Cleura is one of the leading European providers of IT infrastructure services based on Open Source. Our company provides public, compliant, private and hybrid cloud solutions based on OpenStack and has data centres around the world. We are a fast-growing company & European leader in infrastructure as a service. We love having fun and working hard. We live to get that smile on our customers' faces when we solve a problem or provide something better than expected. That’s, in fact, why we go to work the next day.
Cleura is part of Iver , meaning that we have more than 1700 colleagues to support us in reaching our goals of becoming the primary European IaaS alternative.
We strive for everyone to be engaged and aligned with our fundamental values - We Care, We Inspire, We Challenge & We Communicate.


About the Role :
We are on an exciting journey providing Enterprises and the public sector with regulatory compliant, cloud-based infrastructure services based on Ceph. We are a fast-growing company! It means a little chaos is a good thing! We are the European leaders in infrastructure as a service using open source software such as OpenStack.
You will join the team of 3-4 engineers maintaining the storage infrastructure for the global cloud services. This role is about running our current clusters and designing new clusters & enable new features to allow our customers to do even more. We are looking out for a colleague who is a real team player to take on tasks and also like to develop his/her skills, test new features and share ideas to bring us all forward and build an even better service for our customers.


About the team:
We love Open source! We primarily use Open-source technologies and enjoy contributing back when we can.
We work in an agile way, when it's relevant.
We are disciplined when it comes to testing changes.
We have fun at work.
We spend time training new people who join the team and adjust how we work together via retrospectives.


Responsibilities:
Design, architect, monitor, manage and optimize our Ceph storage solution, including tuning and optimizing performance.
Collaborate with the Cloud Engineering team to ensure proper integration with our OpenStack environment.
Work with automation tools to efficiently provision and manage our Ceph environment.
Maintain and upgrade existing clusters.


Requirement/ Must have
You should have European citizenship.
You should know Ceph in detail.
Know about HAproxy and RadosGW.
Working experience building and using Ansible collections.
At least four years of experience with similar responsibilities and a proven track record of implementation is a requirement.


Good to have:
Experience with distributed storage solutions for Linux like GlusterFS, lustre, zfs, etc.
Certifications like RHCSA, RHCE, LPI


Qualifications:
Bachelor's degree in the field of information technology or a higher degree.


Personal Qualities:
Genuinely interested in new technologies, software or hardware.
Well-organized and structured.


What we offer:
Full-time position.
Leave Policy: 6 weeks vacation.
Remote work: Yes, if it suits you the best.


I'm interested. What's next?
We'd like to hear from you! We have a few questions we would like to ask you. You'll be able to apply for this position until 15th March. We will start reviewing and inviting applications immediately, so make sure you get yours in early.
Type of Employment: Full-time position.
Salary and compensation will be negotiated during the interview process.
Location: Karlskrona/Stockholm/Remote
Start Date: Immediate/at your earliest convenience Visa mindre

Cleura is one of the leading European provider of IT infrastructure services based on Open Source. Our company provides public, compliant, private and hybrid cloud solutions based on OpenStack and has data centers primarily in Europe. We are a fast-growing company & European leader in infrastructure as a service. We love having fun and working hard. We live to get that smile on our customer's faces when we solve a problem or provide something better than expected. That’s, in fact, why we go to work the next day.
Cleura is part of Iver , meaning that we have more than 1700 colleagues to support us in reaching our goals of becoming the primary European IaaS alternative.

About the Role :
You will be responsible for designing, implementing and managing complex network solutions to meet Cleura's business needs.
This role involves strategic planning, hands-on technical expertise & leadership to ensure the development and maintenance of a robust, scalable network infrastructure that is a critical part of Cleura's cloud services.
As a Sr. Network Architect, the role includes leading and acting as a role model for junior architects and engineers.

About the team:
As a member of the NetInfra team, you will maintain the network infrastructure for our public, compliant and private cloud services. This role is about running our current network infrastructure through it's lifecycle, as well as designing new solutions & enabling new features to help our customers do even more.
We work in an agile way, when it's relevant.
We are disciplined when it comes to testing changes.
We have fun at work. Work hard, play hard….
We spend time training new people who join the team and adjust how we work together via retrospectives.


Responsibilities:
Develop and maintain the overall network architecture, ensuring alignment with business goals and scalability.
Design and implement network solutions, considering factors such as performance, security and reliability.
Ensure up to date design documentation
Evaluate emerging technologies and recommend enhancements or updates to the network architecture for Cleura's range of service.
Oversee Cleura's network documentation such as solution design document, record of change and network diagrams
Provide technical training and support for appropriate teams.
Lead complex projects to ensure coordination and communication are clear & concise.
Collaborate with cross-functional teams to ensure alignment with overall IT and business objectives.
Provide expert-level support for complex network issues, collaborating with support teams as needed
Provide incident and request support for customers.
Being PoC from network perspective for Cleura's security audits.


Requirement/ Must have
Plans and designs Layer 2 and Layer3 large-scale IPv4 and IPv6 networks, including BGP Routing and Multiprotocol Label Switching (MPLS)
Software Defined Networking (SDN) to automate network provisioning, enterprise network functions such as DNS, DHCP, NTP and PTP


Experience with VXLAN BGP EVPN fabrics
Familiarity with how LACP, STP, OSPF and MP-BGP work
Familiarity with Ansible or similar configuration framework
Profound knowledge in writing and maintaining technical installation, configuration and update procedures of services and tools.


Good to have:
May have specialist external certification such as CCNP, CCDP or equivalent
Ability to act as an informal resource for colleagues with less experience.
Strong coaching ability
Familiarity with Jira or other issue tracking systems


Qualifications:
You should have European citizenship
Degree in engineering, business or related field
Minimum of 3 years' experience in the area of the role


Personal Qualities:
Genuinely interested in new technologies, software or hardware.
Excellent communication and collaboration skills
Ability to keep up with the latest technologies
Drive to automate your repetitive work
Basic understanding of ITIL framework
Ability to work under pressure
Well-organized and structured


What we offer:
Full-time position with a 6-month probationary period.
Leave Policy: 6 weeks vacation.
Remote work: Yes, if it suits you the best.


I'm interested. What's next?
We'd like to hear from you! We have a few questions we would like to ask you. We will start reviewing and inviting applications immediately, so make sure you get yours in early.

Type of Employment :
Full-time position.
Salary and compensation will be negotiated during the interview process.

Location :Karlskrona/Stockholm/Remote

Start Date :Immediate/at your earliest convenience Visa mindre

Cleura is one of the leading European provider of IT infrastructure services based on Open Source. Our company provides public, compliant, private and hybrid cloud solutions based on OpenStack and has data centres around the world. We are a fast-growing company & European leader in infrastructure as a service. We love having fun and working hard. We live to get that smile on our customers' faces when we solve a problem or provide something better than expected. That’s, in fact, why we go to work the next day.
Cleura is part of Iver , meaning that we have more than 1700 colleagues to support us in reaching our goals of becoming the primary European IaaS alternative.
We strive for everyone to be engaged and aligned with our fundamental values - We Care, We Inspire, We Challenge & We Communicate.
About the Role :
We are on an exciting journey providing Enterprises and the public sector with regulatory compliant, cloud-based infrastructure services based on Opensource. We are a fast growing company! It means a little chaos is a good thing! We are the European leaders in infrastructure as a service using open source software such as OpenStack.
You will join the team of 3-4 engineers maintaining the storage infrastructure for the global cloud services. This role is about running our current clusters and designing new clusters & enable new features to allow our customers to do even more. We are looking out for a colleague who is a real team player to take on tasks & also like to develop his/her skills, test new features and share ideas to bring us all forward and build an even better service for our customers.
About the team:
We love Open source! We primarily use Open-source technologies and enjoy contributing back when we can.
We work in an agile way, when it's relevant.
We are disciplined when it comes to testing changes.
We have fun at work. Work hard, play hard.
We spend time training new people who join the team and adjust how we work together via retrospectives.

Requirement/ Must have
You should have European citizenship.
You should know Ceph in detail.
Know about Haproxy and Radosgw to offer s3 and Swift to the public.
Maintain and upgrade existing clusters.
Patient and know how to deal with customer data.
Automate your repetitive work.
At least four years of experience with similar responsibilities and a track record of implementation is a requirement.

Good to have:
Experience with distributed storage solutions for Linux like GlusterFS, lustre, zfs, etc.
Certifications like RHCSA, RHCE, LPI


Qualifications:
Bachelor's degree in the field of information technology or a higher degree.

Personal Qualities:
Genuinely interested in new technologies, software or hardware.
Well-organized and structured.

What we offer:
Full-time position with a 6-month probationary period.
Leave Policy: 6 weeks vacation.
Remote work: Yes, if it suits you the best.

I'm interested. What's next?
We'd like to hear from you! We have a few questions we would like to ask you. We will start reviewing and inviting applications immediately, so make sure you get yours in early.
Type of Employment: Full-time position.
Salary and compensation will be negotiated during the interview process.
Location: Karlskrona/Stockholm/Remote
Start Date: Immediate/at your earliest convenience. Visa mindre

Cleura is one of the leading European providers of IT infrastructure services based on Open Source. Our company provides public, compliant, private, and hybrid cloud solutions based on OpenStack and has data centers worldwide. We are a fast-growing company & European leader in infrastructure as a service. We love having fun and working hard. We live to get that smile on our customer's faces when we solve a problem or simply provide something better than expected. That's why we go to work the next day.
Cleura is part of Iver, meaning that we have more than 1200 colleagues to support us in reaching our goals of becoming the primary European IaaS alternative.
About the team:
At Cleura - WE CARE,WE COMMUNICATE, WE CHALLENGE, WE INSPIRE.
Our cloud operations engineers bring software-engineering skills and rigour to the operations domain. Our domain perform system automation tasks, system planning, customer support, system monitoring, platform monitoring, diagnostics and troubleshooting. We believe in automation as a pure software engineering problem, not a hack-it-till-it-works-for-me problem. We are interested in the scientific approach to operations at scale, driven by metrics and code.
Role:
You will perform infrastructure operational activities which include upgrades, image patching, monitoring, configuration and troubleshooting.
You will contribute to the design and implementation of operational procedures and policies.
You will recognise common problems and try to prevent them and identify opportunities for service improvement and automation.
Proactively monitor the environment by being part of 24x7 rotation schedules.
Learn from continuous improvement and share the knowledge within the team as well as support in maintaining internal documentation.
Will and ability to drive change and innovation.
You are encouraged to actively work and be part of open source community.


Requirements:
Scripting experience with common languages such as Bash or Python.
Good to have certifications like RHCSA, RHCE, LPI
Experience with OpenStack, Ceph and infrastructure operations
Experience with Configuration Management (Ansible, Puppet)
Experience with Container management (Docker, Kubernetes, LXC)
Knowledge on working with ITIL Processes and Agile methodologies.


What we offer:
Full-time position with 6-months probationary period.
Leave Policy: 6 weeks vacation.
Remote work: We are flexible in regard to your work place & allow you to choose for yourself. You can select remote work if you are located within the EU or join one of our offices in Karlskrona / Stockholm.


I'm interested. What's next?
We'd like to hear from you! We have a few questions we would like to ask you. We will start reviewing and inviting applications right away, so make sure you get yours in early.
Type of Employment: Full-time position.
Location: Remote within EU or you are welcome to work in any of our offices in Sweden.
Start Date: Immediate / at your earliest convenience Visa mindre