As a Site Reliability Engineer , you will play a critical role in ensuring the stability, availability, resilience, and performance of our cloud platform in production.
Second, when incidents occur, you will help restore service quickly by coordinating technical diagnosis, controlling the situation, communicating impact, and leading recovery efforts.
This is a senior, hands-on role for someone with a strong operational mindset who is comfortable working in complex production environments, investigating technical issues, making decisions under pressure, and taking ownership of platform reliability.
You will be part of the Site Reliability Engineering team, working in a practical environment focused on keeping the platform stable while continuously reducing operational risk and manual effort.
You will also contribute to capacity planning, production scaling, infrastructure improvements, migrations, observability, automation, and operational readiness.
You will help establish control, assess impact, accelerate diagnosis, involve the right teams, communicate clearly, and restore service as quickly and safely as possible.
You will work closely with engineering, systems, networking, storage, database, security, and product teams. We are looking for a senior Site Reliability Engineer with strong experience operating critical production environments and a proven ability to identify risks, troubleshoot complex issues, and drive long-term reliability improvements.
Operating critical production infrastructures while ensuring availability, stability, performance,



and recoverability.
Performing root cause analysis and implementing corrective and preventive actions.
Monitoring demand, system limits, growth trends, bottlenecks, and saturation points.
Contributing to capacity planning and executing infrastructure scaling in production environments.
Reviewing infrastructure changes, deployments, maintenance activities, and migrations from a reliability perspective.
Working with systems that support web applications, including a solid understanding of DNS, TCP/IP, and load balancing.
Administering technologies such as NGINX, Apache, load balancers, databases, and related web infrastructure.
Strong experience with Linux systems and working knowledge of Windows environments.
Good understanding of networking, virtualization, storage, databases, and infrastructure dependencies.
Familiarity with Kubernetes and containerized platforms is highly valuable.
Experience with cloud infrastructure is highly valuable.
Broad technical knowledge across infrastructure, applications, networks, storage, and databases.
Strong risk-based thinking, with the ability to distinguish urgent work from important preventive work.




Infrastructure and system-administration tools across Linux and Windows environments.
Networking, virtualization, storage, and database technologies.
Web infrastructure tools such as load balancers, NGINX, Apache, and proxies.
Cloud infrastructure and configuration-management platforms.
Kubernetes and container orchestration technologies.
Capacity-planning, performance-analysis, and infrastructure-scaling tools.
When incidents occur, they are controlled quickly, communicated clearly, and resolved with reduced recovery time. Plenit (formerly Jotelulu) is the Operating Platform for IT Service Providers. We are a European cloud platform with a clear conviction: digital sovereignty matters, and the IT channel deserves a partner that speaks their language, builds for their reality, and stays close to the ground. We’re passionate about technology, but we’re also a bit geeky—we love Star Wars, video games, 90s movies, and pop culture. That’s why we’ve designed a benefits package that reflects who we are, how we work, and what we value as a company.
We support your professional growth through internal training, learning resources, and development plans tailored to your career path.

Private Health Insurance
You’ll have access to private health coverage, giving you peace of mind and support in your day-to-day life.

Informal Events
We regularly organize informal events and activities to enjoy time together and reinforce our team spirit.

📌 Senior Build Engineer (Madrid)
🏢 Plenit
📍 Madrid