09/08/2026 updated
100 % available
Senior Full Stack ENGINEER | KUBERNETES | DEVSECOPS | PLATFORM ENGINEERING
RADOM, Poland
Worldwide
BA Computer ScienceKubernetes SecurityAmazon DynamoDBJava Platform Enterprise Edition (J2EE)BackendBackend ProgrammingKubernetesRancherDevSecOps
• Led maintenance and further development of existing Java/J2EE backend and shared platform components, balancing feature
delivery with reliability, security, backward compatibility, and operational support.
• Designed and implemented Spring and Quarkus-based backend services using layered architectures, clear domain boundaries,
REST interfaces, structured validation, and integration patterns suitable for enterprise platform environments.
• Administered and supported Kubernetes clusters and container workloads, troubleshooting deployments, services, configuration,
resource issues, failed rollouts, networking symptoms, and application-to-platform integration problems.
• Owned DevSecOps improvements across build, test, security, deployment, and release workflows; maintained CI/CD pipelines and
Tekton-style pipeline tasks used by multiple development teams.
• Integrated software-composition and security scanning into delivery pipelines, triaged findings, coordinated dependency/security
updates, and supported secure-coding remediation before releases reached production.
• Worked with Nexus repository services and IQ-style policy/scanning workflows for artifact governance, dependency visibility, and
controlled use of third-party components.
• Supported Kafka-based integration flows and Oracle/SQL persistence layers, investigating message-processing failures,
schema/query issues, transaction behavior, and backend performance bottlenecks.
• Handled complex 2nd- and 3rd-level incidents by tracing problems across Java services, Kubernetes, CI/CD, databases,
messaging, configuration, and external interfaces; documented root causes and preventative actions.
• Maintained and extended Backstage-based developer-platform capabilities, improving service catalog information, onboarding
patterns, documentation links, and access to standardized platform workflows.
• Enabled new DevSecOps teams on the container platform through architecture guidance, pipeline templates, deployment
standards, troubleshooting support, documentation, and hands-on knowledge transfer.
• Collaborated with technical and business architects on software architecture, platform constraints, security requirements, and
modernization decisions for multi-layer enterprise applications.
Experience
Professional experience10+ years
Freelancer since2010
Languages
EnglishFluent