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.
Open Positions at Upstream
4 open positions
DevOps Engineer responsible for building and operating hybrid on-premise and cloud infrastructure, deployment platforms, and automation for high-volume microservice products. The role combines Kubernetes, cloud platforms, infrastructure as code, CI/CD, observability, and hands-on systems administration.
Senior DevOps Engineer responsible for evolving Upstream’s immutable, container-based deployment platform and building scalable infrastructure across on-premise and cloud environments. The role combines platform tooling, infrastructure automation, developer enablement, observability, and operational reliability.
Software Engineer, Java developing high-volume, low-latency mission-critical applications for mobile marketing and digital services. The role contributes across the software development lifecycle in a hybrid Athens-based team.
Senior Software Engineer focused on building and supporting mission-critical Java applications across the full software development lifecycle. The role combines backend development, distributed systems technologies, production support, and coaching junior developers in a hybrid Athens-based team.