Bytamic is an international IT services and Consulting company with its headquarters in Vienna, Austria and subsidiary companies in Warsaw and Poznan. We work with multinational companies and we drive digital transformation for our clients. We are truly agile, work with the latest technologies and our engineers and scrum-teams deliver state-of-the-art product development services for our clients. Delivering with highest quality standards is key to us – therefore we focus on continuous training & education of our engineers. Client's descriptionGlobal leader in communication and information solutions for safety-critical environments, with over 75 years of innovation and excellence. Operating across sectors such as civil aviation, defense, public safety, maritime, and public transportation, the company delivers cutting-edge solutions tailored to user needs worldwide.Role OverviewWe are seeking a skilled DevOps Engineer with strong experience in Jenkins-based pipeline design, a solid Linux systems background, and a strong understanding of network and security concepts. The engineer will collaborate with cross-functional teams to design, implement, and maintain a secure, enterprise-grade CI/CD solution, aligned with the proposed architecture, integrating source control, artifact management, automated testing, security controls, and deployment workflows.This role is hands-on and requires both engineering execution and collaborative problem-solving across infrastructure, networking, security, and application teams.Your responsibilities would be to:Design, build, and maintain CI/CD pipelines using Jenkins for multiple environments (dev, test, staging, production).Collaborate with platform, network, security, and application teams to implement the target CI/CD architecture, including:Secure Jenkins controllers and agentsIntegration with Git-based source control systemsArtifact management using JFrog ArtifactoryContainerized build and delivery workflows using PodmanImplement pipeline-as-code using Jenkinsfiles and shared libraries.Enhance and maintain CIS Level 1 (CIS1) hardening across CI/CD building blocks, including:RHEL-based systemsKVM virtualization environmentsManage and troubleshoot Linux-based build and runtime environments, including system configuration, patching, performance tuning, and security hardening.Integrate CI/CD workflows with:Issue tracking systems (e.g., Jira)Artifact promotion and versioning processesMonitoring and security toolingApply networking best practices within CI/CD and platform environments, including:VLANs, routing, and firewall rulesProxies and DMZ-based architecturesSecure service-to-service communicationImplement access controls, secrets management, and network segmentation aligned with enterprise security policies.Support regression testing, quality gates, and approval workflows prior to deployment.Monitor pipeline health, improve reliability, and optimize build performance.Produce and maintain technical documentation, operational procedures, and compliance evidence. What you need4+ years of hands-on experience with Jenkins in production environments.Strong understanding of CI/CD and DevOps best practicesBachelor’s degree in Computer Science, Engineering, or equivalent experienceProven experience implementing or enhancing CIS Level 1 (CIS1) benchmarks on:Red Hat Enterprise Linux (RHEL)KVM-based infrastructureDatabasesGood experience working with Linux systems:Bash/shell scriptingServices, logging, and troubleshootingHands-on experience with:Podman for container build and executionJFrog Artifactory for artifact storage, dependency management, and promotionGood understanding of network concepts, including:TCP/IP, DNS, and routingFirewalls, proxies, and load balancingSegmented networks (VLANs, DMZs) Nice-to-Have:Experience in enterprise, regulated, or security-sensitive environments.Knowledge or hands-on experience with security monitoring and hardening tools, including:Wazuh (SIEM / HIDS)Zabbix, preferably hardened according to CIS1 guidelinesFamiliarity with:Infrastructure as Code (Ansible, Terraform)Secure container and virtualization platformsExperience supporting multi-zone or air-gapped CI/CD architectures.Understanding of compliance, audit readiness, and security governance.What you can expect from us:Working with latest technologies Lots of career development potentials (career-planning) Challenging projects (mostly product/feature development) International software development teams with distributed delivery groups Private healthcare and Multisport card at employment of contract or reimbursement for it at B2B contractTraining & education Attractive remuneration Language classes (usually business English; but not limited to) Modern computer equipmentEmployee referral programme Integrational meetings & events If you think that this job offer can be for you, we would like to hear from you:)#linux #cicd #jenkins #english #itjobs #poland