Senior DevOps Engineer, Observability (Elastic Stack)

Role description and responsibilities This is a Senior Elasticsearch & Observability Engineer role focused on designing, building, maintaining, and extending the Elasticsearch Stack to drive observability practices across complex environments (Mainframe, Open Systems, and Container platforms). Day-to-day work combines technical execution, platform optimization, cross-team collaboration, continuous delivery governance, and coaching to drive observability adoption. What You'll Do Design, build, maintain, support, and extend the Elastic Stack (Beats, Elastic Agents, Logstash, Elasticsearch, Kibana); Drive Observability practices and design solutions for applications hosted on Mainframe, Open Systems, and Container platforms; Ensure platform performance, indexing efficiency, log retention policies, data lifecycle management, and secure access control; Follow vendor updates, new feature releases, and market trends to continuously evolve the observability platform; Work closely with development teams, architects, and operations teams to ensure seamless integration of observability and CI/CD knowledge; Establish best practices and governance for application monitoring and compliance with coding standards/guidelines; Coach and mentor team members, driving the adoption of new observability solutions across the organization; Collaborate with stakeholders to analyze needs, estimate effort for new features, co-create value-driven roadmaps, and report progress to Product Owners/Management; Lead production troubleshooting, root cause analysis (RCA), incident handling (P1/P2), and release execution. Requirements Qualifications University degree in Computer Science, Engineering or comparable technical field; 5-10 years of hands-on experience in IT environments with focus on observability and production support; Proven track record in Agile delivery models and incident/release management; Solid experience in cross-team coordination, stakeholder communication, and effort estimation; OS & Infrastructure knowledge: Linux and Windows fundamentals (processes, file systems, shell, key metrics). Technical Skills Strong hands-on expertise with Elastic platform (Beats, Elastic Agents, Logstash, Elasticsearch, Kibana, OpenTelemetry standards); Observability core concepts: logs, metrics, traces, golden signals, log analysis, dashboard creation, and alerting configuration; Hands-on experience with CI/CD tools (Bitbucket, Git, Jenkins, UCD, Ansible) and automated testing frameworks; Container & Cloud technologies: Docker & Kubernetes; APIs and system integration (REST API fundamentals); Basic understanding of security controls: authentication, RBAC, access management, and audit compliance; Tools: Jira, Confluence, ServiceNow, MS Office. Profile & Other Requirements Professional English C1 (spoken and written) — mandatory; French and/or Dutch is a plus; Strong collaboration & coaching skills — comfortable mentoring peers and interacting with technical and non-technical stakeholders; Proactive mindset with strong ownership, structured problem-solving, and continuous learning attitude; Willingness and availability for on-call support and scheduled overtime activities when required; Lisbon/Portugal-based — hybrid working model (CET alignment required). Must own a valid work permit or EU/Schengen Space nationality to legally work in Portugal. Nice to have Mainframe knowledge is a plus; Elasticsearch certification and Microsoft Azure knowledge are a strong plus; Experience in regulated environments (e.g., Financial Services) is a strong plus; French and/or Dutch is a plus. Perks Health insurance; Life Insurance and Pension Plan Programs; Free medical services at the office (Physician, Nutritionist, Psychologist); Wellness programs; Flexben Program (Support for Education, Kindergarten, Training, Technology, Health); Employee Share Purchase Plan; Personalized training paths and access to Udemy and Pluralsight Platforms; Flex-ability program (financial and flexible support for people with disabilities); Special banking conditions; Hybrid working model.