19 days ago
Gérakas, GreeceMid Level / Senior
Responsibilities
- Define artifact and container-based deployment strategies.
- Evolve and support the immutable deployment platform.
- Design and implement on-premise and cloud infrastructure using VMware, AWS, and Azure.
- Maintain and upgrade on-premise data center infrastructure.
- Optimize cloud infrastructure for cost, performance, and scalability.
- Develop and deploy infrastructure as code using Ansible and Terraform.
- Design and implement CI/CD pipelines with Jenkins, GitLab CI/CD, or similar tools.
- Enable developers to build and deploy images locally, on Kubernetes, and to the cloud.
- Troubleshoot system performance, network connectivity, security, availability, and uptime issues.
- Perform system upgrades, patch management, and security hardening.
- Monitor on-premise and cloud environment performance, availability, and security.
- Develop automation for deployments, platform metrics, reporting, and monitoring.
- Support platforms built with Java, Python, Go, PHP, and other technologies.
Requirements
- 3–5 years of experience in DevOps, systems engineering, or similar roles.
- Experience with Linux system administration and troubleshooting.
- Exposure to Docker, Kubernetes, container-focused Linux distributions, and cloud virtualization.
- Experience designing and building tools and infrastructure for AWS or Azure.
- Knowledge of Ansible, Terraform, Helm, Jenkins, GitLab, Grafana, Prometheus, and Loki.
- Operational experience supporting other departments, optimizing deployments for availability and uptime, and troubleshooting and remediation.
- Programming experience in Bash, Python, and Golang.
- Experience with VMware vCenter, clustering, and virtualization is preferred.
- Experience managing bare-metal servers, storage systems, and SAN networks is preferred.
- Knowledge of relational databases such as PostgreSQL and NoSQL systems such as Redis, Elasticsearch, Couchbase, and Cassandra.
- Strong written and verbal communication skills and eagerness to learn new technologies.
Benefits
- Hybrid workplace in Gerakas, Greece.
- Full-time position.
- Competitive base salary and benefits dependent on qualifications and skills.
- Opportunity to work with a dynamic, agile, and highly motivated engineering team.
Tech Stack
AnsibleApache CassandraAWSAzureBashCouchbaseDockerElasticsearchGoGrafanaHelmJavaJenkinsKubernetesLinuxPHPPostgreSQLPrometheusPythonRedisTerraform
Categories
About Upstream
Upstream builds a mobile marketing automation and digital commerce platform for mobile network operators and consumer brands, combining omnichannel messaging, operator billing, and anti-fraud protection. It operates as a privately held provider of software and managed services, supporting revenue growth and customer acquisition across 45+ markets in Latin America, Africa, the Middle East, and Southeast Asia. Founded in 2001 and headquartered in Athens, Greece, it works with more than 60 mobile network operators worldwide.