Senior System Administrator / SRE

Permanent employee, Full-time · Oficina Plaza España

About this role

The challenge

We’re at a pivotal stage in the evolution of our cloud platform. To continue scaling efficiently and strengthening reliability, we are expanding our Operations & SRE capabilities. Our infrastructure supports mission-critical services for our customers, and ensuring performance, stability, and continuous improvement is at the core of our vision.

As a Site Reliability Engineer / Systems Administrator, your mission will be to monitor and optimize our cloud systems, automate processes, ensure effective incident management, and help us maintain a robust, scalable and secure infrastructure. You will play a key role in minimizing downtime, improving operational efficiency, and supporting sustainable growth.

You’ll be part of a highly collaborative engineering environment, working closely with DevOps, Product and Development teams to build reliable services from the ground up, enforce good operational practices and contribute to ongoing enhancements that impact thousands of users.

Collaboration will be essential. You will support critical infrastructure decisions, lead incident response, proactively detect risks and ensure that both technology and teams can continue to scale confidently.

Requirements that are important for us

Experience in administration of large-scale cloud or MSP infrastructures.
Expert in Linux systems (a must).
Design and maintenance of resilient backup and disaster recovery strategies.
Close collaboration with Dev and Ops teams to ensure reliability from design to production.
Experience working with critical environments requiring fast and effective incident resolution.
Infrastructure as Code (Terraform, Ansible) to improve automation and repeatability
Solid networking expertise: TCP/IP, DNS, load balancing, firewalling, BGP, network virtualization.
Experience with network storage solutions (Ceph, NFS or similar).
Familiarity with DevOps technologies, CI/CD and agile methodologies.
Knowledge of IaaS orchestration such as CloudStack or OpenStack.
Database skills: MySQL, MariaDB or PostgreSQL.
Experience with monitoring and tuning tools (Zabbix, Nagios, Prometheus, Grafana, Datadog…).
Understanding of ITIL processes for managing incidents, problems, and changes.

Key skills and expected impact

Strong documentation practices and contribution to operational knowledge.Monitoring and optimization of performance, identifying bottlenecks and preventing service interruptions.
Ability to lead root cause analysis and prevent recurring incidents.
Implementation of centralized log management and analysis.
Excellent communication in Spanish and intermediate English.

Nice to have

Hands-on experience with CI/CD pipelines.
Container orchestration (Docker, Kubernetes…).
Performance optimization in distributed applications.
Experience with web servers and virtualized platforms.
Advanced security knowledge and system hardening.
Analytical mindset focused on operational excellence.
Experience with ticketing systems (workflow creation, prioritization, follow-up).

Tools

Automation & IaC: Terraform, Ansible
Monitoring & performance: Prometheus, Grafana, Nagios, Zabbix, Datadog
Logging: Sistemas de gestión centralizada de logs
Databases: MySQL, MariaDB, PostgreSQL
Orchestration: CloudStack, OpenStack, containers
Collaboration & knowledge base: Jira, Confluence, Microsoft 365, Slack
Ticketing & ITSM: Herramientas basadas en ITIL

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About us

Ready to shake up the tech world? At Jotelulu, we’re on a mission to empower Technology Service Providers with our secure, all-in-one cloud platform. We unite automation, AI, and growth tools, giving our partners the freedom to scale fast, launch big ideas, and build their brand with confidence.
This is the perfect time to join us: the company is growing rapidly, the challenges are exciting, and each person has a real impact.

If you are passionate, ambitious and ready to help shape the future of cloud technology, we want to meet you. You will join a fun, fast-paced, collaborative, and agile team, helping us scale our platform to millions of users while building out Jotelulu’s own infrastructure and data centers with the latest technologies.

Life a Jotelulu

We’re passionate about technology, but we’re also a bit geeky—we love Star Wars, video games, 90s movies, and pop culture.
We work hard and with passion, but we also have a great time together. At Jotelulu, you’ll find a balance between work and fun, where teammates often become friends, and boredom is rare—there’s always something new, unexpected, and memorable happening.

Videos behind the scenes

Meet our team!

This is how we roll at events!

Our own event, the SUMMIT

What we offer?
At Jotelulu, we’re building something big, and we want you to be part of it.
We don’t do red tape or endless layers of approval. Here, ideas move fast, and your opinion actually counts.

We believe in flexibility and balance, because work is part of life, not the other way around. Whether you’re at home, in the office, or anywhere in between, what matters most is the impact you make.

You’ll join a team that’s growing and learning together, where challenges are real, but so are the opportunities to stretch your skills and shape your career path. We’ll give you the tools, the trust, and the feedback to help you keep moving forward.

Our culture is inclusive, friendly, and refreshingly down-to-earth. No suits, no egos, just a bunch of people who enjoy what they do and respect each other’s individuality.

We also take care of the essentials: access to quality healthcare, a transparent feedback culture (including regular 1:1s and performance reviews), and open communication through company-wide updates.

We also take care of your well-being:
- Private health insurance with access to a top-tier medical network.
- A friendly, inclusive culture where everyone can be themselves.
- Casual dress code (yes, t-shirts and sneakers are perfectly fine).
- Team gatherings and informal events to celebrate milestones and recharge together.
- We would love to hear from you and have the opportunity to work together.

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We’re excited to discover what you’ll bring to the team.

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