Senior Site Reliability Engineer Job at Arcesium (Lisbon)

Senior Site Reliability Engineer

Arcesium

Location:
Portugal , Lisbon

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Not provided

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Job Description:

We are looking for an intelligent, resourceful, and highly skilled Senior Site Reliability Engineer (SRE) to join our Platform Site Reliability Engineering (PSRE) team. This team plays a critical role in ensuring the stability, reliability, and availability of mission-critical production applications on the Arcesium platform. The PSRE team is responsible for: Observability, monitoring, logging, and tracing to proactively detect and prevent issues; Building tools and infrastructure that enhance system stability and resilience; Troubleshooting live production issues with a deep focus on rapid incident resolution; Governing, declaring, managing, and recovering from platform-wide incidents to minimize downtime and business impact. As an SRE in this high-impact team, you will work under tight timelines in a high-pressure environment, where every second counts in resolving critical production incidents. This means you must be quick-thinking, highly analytical, and proactive in preventing and resolving disruptions.

Job Responsibility:

Incident Management: Serve as a primary contact and leader for incidents and critical issues impacting our platform during NY business hours. Take ownership of incidents, drive effective communication, and facilitate swift resolution by collaborating with relevant engineering teams
Proactive Monitoring & Analysis: Continuously monitor the health and performance of our applications and infrastructure. Analyze trends, identify potential risks, and proactively implement measures to prevent incidents and improve overall system reliability
Troubleshooting & Problem Solving: Troubleshoot complex technical issues across various layers of the stack (application, infrastructure, network). Utilize your analytical skills and technical expertise to identify root causes and implement effective solutions
Collaboration & Communication: Work closely with engineering, development, and operations teams to ensure seamless collaboration during incident response and in proactive reliability initiatives. Communicate effectively with stakeholders at all levels, providing clear and concise updates on incidents and system status
Automation & Optimization: Identify opportunities to automate tasks, improve operational efficiency, and enhance the resilience of our systems. Develop tools and scripts as needed to streamline processes and reduce manual intervention
Continuous Improvement: Contribute to the ongoing development and improvement of our SRE practices, tools, and processes. Share your knowledge and expertise with the team to foster a culture of learning and growth

Requirements:

Up to 5 years of experience in a Site Reliability Engineering (SRE), DevOps, or Production Engineering role, with a deep understanding of SRE principles and best practices
Incident management expertise, including triaging, escalation, and resolution of high-severity outages
Proficiency in at least one coding language (Python or Java) for automation and debugging
Hands-on experience in Kubernetes (K8s) for managing and orchestrating containerized applications
Cloud experience (AWS preferred) with exposure to key services like EC2, S3, Lambda, and CloudWatch
Excellent communication skills to articulate technical challenges and solutions effectively
Strong troubleshooting and problem-solving skills, with experience diagnosing complex production issues
Ability to stay calm under pressure, multitask, and prioritize effectively in fast-moving environments
Fluency in English (spoken and written) is required
Must have the legal right to work in the country

Nice to have:

Experience with Terraform or CloudFormation for infrastructure-as-code
Experience with monitoring tools (e.g., Datadog, Prometheus, Grafana)
Familiarity with web application architectures and best practices
Exposure to CI/CD pipelines and DevOps workflows

What we offer:

Flexible work arrangements (hybrid model) and a casual dress code
Opportunity to work on challenging projects in a dynamic, global environment
Continuous learning and development opportunities
Collaborative and innovative work culture
Competitive compensation and benefits package
Modern and comfortable office located at Avenida da Liberdade (Lisbon)

Additional Information:

Job Posted:
January 06, 2026

Work Type:

Hybrid work

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