DevOps Engineer

Role – Telecom Test Engineer Location: Einsteinova 24, 851 01 Bratislava, Slovakia (Hybrid/Onsite) 2 days at office and 3 days from home End Customer: AT&T Experience: 3-8 Years Rate: Open Mode: Contract only Contract duration - Minimum 12-months duration Is local language must or only English is fine - For Work, English is mandatory. Position Summary We are looking for a skilled DevOps Engineer to support AT&T's network testing and validation ecosystem based on ANT and Open Tool platforms. The engineer will be responsible for managing CI/CD pipelines, cloud infrastructure, application deployments, test environments, automation frameworks, monitoring solutions, and platform reliability. The ideal candidate should possess experience in telecom environments, cloud-native platforms, container orchestration, infrastructure automation, and test environment management. Key Responsibilities CI/CD and Release Management Design, implement, and maintain CI/CD pipelines for ANT and Open Tool deployments.Automate build, deployment, configuration, and release processes.Support continuous integration and continuous delivery across development, testing, and production environments.Manage version control and release branching strategies.Infrastructure Management Provision and maintain development, test, staging, and production environments.Manage Linux servers, virtual machines, containers, and telecom application infrastructure.Ensure high availability, scalability, and reliability of deployed systems.Perform environment health checks and capacity planning.Cloud & Container Platforms Deploy and manage applications on AWS, Azure, or GCP environments.Configure and administer Kubernetes/OpenShift clusters.Support microservices-based deployments.Automate infrastructure provisioning using Infrastructure-as-Code (IaC).Automation & Configuration Management Develop automation scripts using Python, Shell, or Ansible.Implement Infrastructure as Code using Terraform or CloudFormation.Automate environment setup and platform configuration.Standardize deployment and configuration processes.Support Telecom Network Validation Platforms Support ANT and Open Tool infrastructure used for LTE, 5G, IMS, and network performance validation.Ensure smooth operation of testing environments.Collaborate with QA teams executing network validation activities.Optimize platform performance and deployment efficiency. Required Technical Skills DevOps Tools JenkinsGit/GitLabAzure DevOpsMaven/GradleNexus/ArtifactoryCloud Platforms AWSMicrosoft AzureGoogle Cloud Platform (Preferred)Containerization & Orchestration DockerKubernetesOpenShiftInfrastructure Automation TerraformAnsibleCloudFormationOperating Systems Linux Administration (RHEL, Ubuntu, CentOS)Shell ScriptingProgramming & Automation PythonBash/Shell ScriptingYAMLJSONMonitoring Tools PrometheusGrafanaELK Stack (Elasticsearch, Logstash, Kibana)SplunkDatabase Knowledge PostgreSQLMySQLMongoDB Telecom Domain Knowledge (Preferred) Understanding of 4G LTE and 5G network architecture.Knowledge of Open RAN ecosystems.Experience supporting telecom testing platforms.Exposure to OSS/BSS environments.Familiarity with network KPIs and performance validation tools.Experience supporting large-scale operator environments such as AT&T, Verizon, T-Mobile, or Vodafone.Position Summary We are seeking a highly motivated Telecom Test Engineer to support AT&T network testing and validation initiatives using ANT and Open Tool platforms. The candidate will be responsible for end-to-end testing, validation, analysis, and reporting of network performance, service quality, and feature functionality across LTE, 5G NSA/SA, IMS, and data services environments. The role requires strong telecom domain expertise, analytical skills, and experience in validating network KPIs, troubleshooting issues, and working closely with development, operations, and customer teams. Key Responsibilities Network Testing & Validation Perform end-to-end testing and validation of wireless network services using ANT and Open Tool platforms.Execute functional, regression, integration, and system testing activities.Validate LTE, 5G NSA/SA, VoLTE, VoWiFi, IMS, and data service KPIs.Analyze network performance metrics and identify service degradation issues.Validate network optimization changes and new feature releases.Tool Validation Test and validate new functionalities introduced in ANT and Open Tool platforms.Verify KPI calculations, dashboards, reports, and data integrity.Conduct API testing and backend data validation.Validate automation workflows and network analytics reports.Defect Management & Reporting Log, track, and manage defects using Jira or similar tools.Perform root cause analysis and provide detailed defect reports.Prepare test execution reports and customer-facing status updates.Collaborate with development teams for defect resolution and retesting.Automation & Data Analysis Develop and execute automated test cases using Python, Robot Framework, or Selenium.Validate APIs using Postman and REST services.Perform database validation using SQL queries.Analyze logs, network traces, and system performance reports.Customer Collaboration Work closely with AT&T stakeholders, product owners, and engineering teams.Participate in requirement reviews, sprint planning, and release validation activities.Support UAT and production validation activities. Required Skills & Qualifications Telecom Domain Knowledge Strong understanding of LTE, 5G NSA/SA, IMS, VoLTE, VoWiFi, and Data Services.Knowledge of wireless network architecture and performance KPIs.Experience with network troubleshooting and log analysis.Testing Skills Functional, Integration, System, Regression, and UAT Testing.Test case creation, execution, and reporting.Defect lifecycle management.Technical Skills API Testing (Postman, REST APIs)Linux/Unix CommandsLog Analysis and TroubleshootingJira or Azure DevOpsAutomation Skills (Nice to Have) PythonRobot FrameworkSeleniumShell ScriptingCI/CD Tools (Jenkins, Git)Communication Skills Excellent verbal and written English communication.Ability to work directly with customer stakeholders.Strong analytical and problem-solving skills. Preferred Qualifications Experience working with AT&T or other Tier-1 telecom operators.Exposure to Open RAN ecosystems.Knowledge of OSS/BSS systems.Experience validating network benchmarking and performance analytics tools.Familiarity with cloud-native environments, Kubernetes, and microservices.Agile/Scrum project experience. Education Bachelor's or Master's degree in Telecommunications, Electronics, Computer Science, Information Technology, or related field. Role: DevOps Engineer – Telecom Network Validation Platform (ANT/Open Tool) Location: Location: Einsteinova 24, 851 01 Bratislava,Slovakia (Hybrid/Onsite) 2 days at office and 3 days from home End Customer: AT&T Experience: 4-10 Years Rate: Open Mode: Contract only Contract duration - Minimum 12-months duration Is local language must or only English is fine - For Work, English is mandatory. Position Summary We are looking for a skilled DevOps Engineer to support AT&T's network testing and validation ecosystem based on ANT and Open Tool platforms. The engineer will be responsible for managing CI/CD pipelines, cloud infrastructure, application deployments, test environments, automation frameworks, monitoring solutions, and platform reliability. The ideal candidate should possess experience in telecom environments, cloud-native platforms, container orchestration, infrastructure automation, and test environment management. Key Responsibilities CI/CD and Release Management Design, implement, and maintain CI/CD pipelines for ANT and Open Tool deployments.Automate build, deployment, configuration, and release processes.Support continuous integration and continuous delivery across development, testing, and production environments.Manage version control and release branching strategies.Infrastructure Management Provision and maintain development, test, staging, and production environments.Manage Linux servers, virtual machines, containers, and telecom application infrastructure.Ensure high availability, scalability, and reliability of deployed systems.Perform environment health checks and capacity planning.Cloud & Container Platforms Deploy and manage applications on AWS, Azure, or GCP environments.Configure and administer Kubernetes/OpenShift clusters.Support microservices-based deployments.Automate infrastructure provisioning using Infrastructure-as-Code (IaC).Automation & Configuration Management Develop automation scripts using Python, Shell, or Ansible.Implement Infrastructure as Code using Terraform or CloudFormation.Automate environment setup and platform configuration.Standardize deployment and configuration processes.Support Telecom Network Validation Platforms Support ANT and Open Tool infrastructure used for LTE, 5G, IMS, and network performance validation.Ensure smooth operation of testing environments.Collaborate with QA teams executing network validation activities.Optimize platform performance and deployment efficiency. Required Technical Skills DevOps Tools JenkinsGit/GitLabAzure DevOpsMaven/GradleNexus/ArtifactoryCloud Platforms AWSMicrosoft AzureGoogle Cloud Platform (Preferred)Containerization & Orchestration DockerKubernetesOpenShiftInfrastructure Automation TerraformAnsibleCloudFormationOperating Systems Linux Administration (RHEL, Ubuntu, CentOS)Shell ScriptingProgramming & Automation PythonBash/Shell ScriptingYAMLJSONMonitoring Tools PrometheusGrafanaELK Stack (Elasticsearch, Logstash, Kibana)SplunkDatabase Knowledge PostgreSQLMySQLMongoDB Telecom Domain Knowledge (Preferred) Understanding of 4G LTE and 5G network architecture.Knowledge of Open RAN ecosystems.Experience supporting telecom testing platforms.Exposure to OSS/BSS environments.Familiarity with network KPIs and performance validation tools.Experience supporting large-scale operator environments such as AT&T, Verizon, T-Mobile, or Vodafone.