Senior/Lead DevOps Engineer

Company Description Join a large-scale infrastructure modernization initiative focused on secure and enterprise-grade government platforms. We are looking for a Senior/Lead DevOps Engineer who is ready to take ownership of technical decisions, lead platform delivery, and contribute to complex cloud and Kubernetes environments. We at Sigma Software value engineering excellence, collaboration, and continuous improvement. You will have the opportunity to work on impactful public sector solutions, contribute to modern infrastructure transformation, and grow within an international engineering environment. PROJECT The project is focused on building and maintaining secure enterprise infrastructure platforms for the public sector. The team designs, automates, and operates Kubernetes-based environments with strong emphasis on cloud infrastructure, platform hardening, Infrastructure as Code, and CI/CD automation. As part of the project, you will contribute to large-scale infrastructure modernization initiatives involving Kubernetes orchestration, GitOps practices, enterprise security solutions, and air-gapped deployment environments. The role includes active participation in technical discovery, architecture design, implementation planning, and stakeholder communication. Job Description Design, implement, and maintain enterprise-grade Kubernetes platforms and cloud infrastructureLead infrastructure delivery activities from the discovery phase through production rolloutMake architectural and technical platform decisions aligned with Customer requirementsAutomate infrastructure provisioning and configuration management using Infrastructure as Code practicesImplement and maintain CI/CD pipelines and GitOps workflowsConfigure and support secure cluster operations, secrets management, and platform hardeningCollaborate directly with Customers, vendors, and external stakeholders during technical workshops and solution discussionsAnalyze existing infrastructure environments and identify optimization opportunitiesPrepare technical proposals, implementation plans, estimates, and delivery roadmapsTroubleshoot production environments and perform root cause analysisSupport compliance, security, and operational readiness requirements for government environmentsMentor engineers and contribute to technical leadership within the team Qualifications 5+ years of commercial experience as a DevOps Engineer in enterprise environmentsDeep expertise in Kubernetes administration, networking, and securityExperience with Infrastructure as Code tools such as TerraformHands-on experience with AWS and/or Azure cloud platformsExperience implementing GitOps practices using ArgoCD or similar toolsStrong Linux administration and troubleshooting skillsExperience with CI/CD automation and software delivery pipelinesKnowledge of secrets management solutions such as OpenBAO or HashiCorp VaultExperience with identity and access management solutions such as KeycloakUnderstanding of infrastructure security, CIS benchmarks, and platform hardeningExperience working with production enterprise infrastructure environmentsAbility to work independently and make technical decisionsExperience communicating directly with Customers and stakeholdersStrong analytical and problem-solving skillsUpper-Intermediate or higher level of English WILL BE A PLUS Experience with OKD or OpenShift administrationExperience with Ceph storage solutionsKnowledge of Helm packaging and customizationExperience with air-gapped environments and restricted infrastructureExperience with vSphere administrationExperience delivering solutions to external hosting providersBackground in government, eGov, or registry-based systemsUnderstanding of compliance and operational requirements in public sector environments Additional Information PERSONAL PROFILE Strong ownership mindset and ability to lead technical initiativesAbility to work effectively in ambiguous and evolving environmentsExcellent communication and stakeholder management skillsStructured and proactive approach to problem-solvingAbility to prioritize tasks and manage multiple responsibilitiesStrong collaboration skills within distributed teamsLeadership mindset with focus on delivery and quality