Senior Application and Operation Support

About the role

Join an IT operations team as a Senior Application and Operation Support Engineer. You will safeguard production environments by ensuring stability, performance, and continuous improvement.

Rate: Up to 105 PLN/hour (B2B)

Your day-to-day focus

• Incident & Problem Management: Own the Root Cause Analysis (RCA) process for production incidents—diagnose, resolve, and introduce preventive measures so issues do not recur.
• Production Monitoring & Support: Continuously monitor service health, detect anomalies early, and act before they become full incidents.
• Deployment Execution: Trigger and oversee release deployments through existing CI/CD pipelines; troubleshoot failed deployments and coordinate rollbacks when needed.
• Environment Oversight: Keep Pre-Production and Production environments stable and aligned, ensuring they behave as expected day to day.
• Operational Improvement: Identify recurring pain points and propose automation or tooling to reduce toil. Improve observability coverage through dashboards, alerts, and log queries, and contribute to disaster recovery drills.
• Knowledge Management: Document operational procedures, known issues, and resolution steps to build a reliable knowledge base.
• Cross-team Collaboration: Work closely with development and platform teams to triage issues, clarify operational requirements, and close the feedback loop between production and development.

Must-have knowledge and experience

• 5+ years in IT operations, application support (L2/L3), or a similar production-facing role.
• Proven track record of owning incidents end to end—from alert to RCA to prevention.
• 2+ years working within an ITIL framework, including incident, problem, and change management.
• Experience working in Agile delivery environments alongside development teams.
• Advanced English communication skills, with the ability to explain technical issues clearly to engineers and non-technical stakeholders.

Must-have technical skills

• Proficiency with log analysis and alerting tools: Splunk, Apica, and Sysdig.
• Experience with observability tools: Prometheus and Grafana, including reading dashboards and tuning alerts.
• Ability to operate services running on Kubernetes and use the Linux CLI to check pod health, read logs, and trigger restarts.
• Familiarity with Jenkins pipelines for executing and troubleshooting deployments, plus proficiency in Git.
• Experience with relational databases—Oracle and DB2—including querying, interpreting execution plans, and identifying data-related incidents.
• Working knowledge of Spring/Hibernate application behavior, Kafka message flows, and XML/JSON payloads to trace issues through the stack.

Nice-to-have

• Experience with Helm deployments.
• Java/J2EE development background, beneficial for reading stack traces and collaborating with developers.
• IBM DataStage operational experience.
• Bash or Python scripting skills for automating repetitive operational tasks.
• Ansible knowledge for applying configuration changes in controlled scenarios.