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Site Reliability Engineer

Oficina Plaza España
Full-time
Permanent employee

About this role

The challenge
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.
Your mission will cover two complementary areas. First, you will work proactively to prevent incidents by identifying operational risks, anticipating capacity constraints, improving production changes, resolving recurring problems, and driving reliability improvements, migrations, and corrective initiatives. 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.
A key part of the role will be to identify what could affect the platform before it becomes an incident. You will assess risks, make them visible, define mitigation or correction plans, assign ownership, and follow actions through to completion. You will also contribute to capacity planning, production scaling, infrastructure improvements, migrations, observability, automation, and operational readiness.
When incidents happen, you will act as a technical reference and coordination point. 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. Your operational perspective will help ensure that reliability, scalability, recoverability, and operability are considered in platform changes and evolution.
Participation in an on-call rotation and response to critical incidents outside regular working hours are part of the role.

Requirements that are important for us
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.
Relevant experience and expected outcomes
  • Operating critical production infrastructures while ensuring availability, stability, performance, and recoverability.
  • Identifying technical and operational risks and driving mitigation, correction, or contingency plans.
  • Maintaining a prioritized backlog of risks, recurring problems, capacity constraints, and reliability improvements.
  • Leading incident response processes, including impact assessment, technical diagnosis, coordination, communication, and service restoration.
  • Performing root cause analysis and implementing corrective and preventive actions.
  • Managing recurring problems and ensuring they remain visible, owned, prioritized, and followed through to resolution.
  • 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.
  • Defining implementation, validation, rollback, and contingency plans for production changes.
  • Improving observability through metrics, logs, traces, alerts, dashboards, and service-health indicators.
  • Improving runbooks, diagnostic playbooks, recovery procedures, and operational documentation.
  • Identifying repetitive tasks, unnecessary escalations, and manual processes that should be automated or simplified.
  • Working with systems that support web applications, including a solid understanding of HTTP, 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.
Key skills and expected impact
  • Strong troubleshooting capabilities and the ability to analyze metrics, logs, traces, events, and system behaviour.
  • 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.
  • Ability to turn operational concerns into concrete actions, owners, deadlines, and measurable outcomes.
  • Ability to remain calm under pressure while acting decisively and proactively.
  • Strong ownership of platform stability and service recovery.
  • Strong coordination skills during incidents, migrations, changes, and technical escalations.
  • Clear communication with technical teams, stakeholders, and affected parties.
  • Ability to challenge unsafe changes or insufficient operational preparation constructively.
  • Strong documentation habits and commitment to shared operational knowledge.
  • Continuous-improvement mindset focused on reducing incidents, recovery time, operational effort, and manual intervention.
  • Motivation to act as a key technical reference during complex and high-impact scenarios.
Tools
  • Observability tools for metrics, logs, traces, alerting, and dashboards.
  • 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.
  • Incident-management and on-call tools.
  • Operational documentation tools, runbooks, playbooks, and incident procedures.
  • Capacity-planning, performance-analysis, and infrastructure-scaling tools.
  • Automation and scripting tools.

What success looks like
Success in this role means that operational risks are identified early, capacity issues are anticipated, production changes are safer, recurring problems are permanently addressed, and the platform becomes progressively more observable, resilient, scalable, and easier to operate.
When incidents occur, they are controlled quickly, communicated clearly, and resolved with reduced recovery time. The objective is not only to respond better, but to reduce the number, frequency, and impact of incidents over time.

About us

Plenit (formerly Jotelulu) is the Operating Platform for IT Service Providers. We help any type of IT company run, scale, and grow their business on top of our own sovereign infrastructure, with a footprint across Europe and the Americas.

Our ambition is to become the platform where IT companies can run their entire business. From technology and operations to go-to-market, Plenit covers the end-to-end needs of an IT partner across the services they deliver to their customers. Powered by agentic AI, the platform connects, automates, and orchestrates these capabilities in a way that traditional Cloud, Marketplace, or IT management platforms do not.

Five years in, we are across four countries and growing fast. We are building something ambitious, but we want to do it in a simple, pragmatic way, staying close to our partners and obsessed with their success. That is exactly why we are bringing this role on now.


What Plenit offers

At Plenit, we offer a place where you can do great work, keep growing, contribute to something meaningful, and be part of shaping the project. We trust our people, give them the space to take ownership, and believe that working as one team and creating a great working environment make all the difference.


Here’s what you can expect when you join us:


Flexibility that works
We believe people do their best when work can adapt to their lives. That’s why we offer flexible working hours and different ways of working, including remote and hybrid options depending on your role and team.


More moments to enjoy
Some days are simply meant to be enjoyed. In addition to your annual leave, we offer extra company days off throughout the year, giving you more time to rest, recharge, and make the most of those moments.


Your health, covered
Taking care of our people is part of how we do things. That’s why Plenit provides private health insurance, fully paid for by the company.


Keep growing
We want Plenit to be a place where you can keep learning, take on new challenges, and continue growing professionally. You’ll have opportunities to develop within the company and keep building on your skills and experience.

You’ll also receive an annual learning budget that you can use for training, courses, certifications, and other resources that support your professional development.


A great place to connect
Our Madrid office is located in the heart of the city and offers a welcoming, collaborative, and energetic environment where you can work, share, and spend time with the team. You’ll also find great coffee and fresh fruit.


A culture built on trust
We believe in doing things well, taking ownership, supporting one another, and enjoying what we build. We value open and honest communication, different perspectives, and working together to keep moving forward. Our culture isn’t just something we talk about; you’ll experience it every day in how we collaborate, contribute, and make things happen.

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