A leader in mobile technology providing innovative solutions to 1.2 billion consumers, helping businesses grow digital reach and optimize user experience across 45 countries.

Upstream, a leading mobile technology company, is seeking a Cloud Platform Engineer to join their dynamic team. The company serves 1.2 billion consumers across 45 countries, providing innovative solutions in performance marketing and digital engagement for major industries including Telco, Insurance, Education, FMCGs, and Retail.

The ideal candidate will be a passionate Linux enthusiast who excels in shell environments rather than IDEs, with strong expertise in cloud infrastructure and VMWare virtualization. This role is critical in maintaining and scaling the company's infrastructure, focusing on microservice-based products and their deployment lifecycle.

Key responsibilities include designing high-volume, low-latency applications, implementing cloud infrastructure solutions, managing on-premise data centers, and developing Infrastructure as Code. The position requires expertise in container technologies, cloud platforms, and various DevOps tools, making it perfect for someone who thrives in fast-paced, production environments.

The role offers an opportunity to work with cutting-edge technologies while contributing to systems that impact over a billion consumers. You'll be part of a smart, agile team that values continuous learning and innovation. The company provides competitive compensation and benefits, fostering an inclusive environment that supports professional growth.

This position is ideal for a mid-level engineer with 1-3 years of experience who is passionate about cloud infrastructure, system administration, and automation. The hybrid work arrangement offers flexibility while maintaining collaborative opportunities with the team in Athens, Greece.

Cloud Platform Engineer position at Upstream, focusing on infrastructure management, DevOps, and system administration in a hybrid work environment.

Cloud Platform Engineer - SysAdmin

Leader in mobile technology providing innovative solutions to 1.2 billion consumers, helping businesses grow digital reach and optimize user experience across 45 countries.

Upstream, a leader in mobile technology, is seeking a Senior Software Engineer to join their Software Development team in Athens, Greece. The company serves 1.2 billion consumers across 45 countries, partnering with major players in Telco, Insurance, Education, FMCGs, and Retail sectors throughout Latin America, Africa, the Middle East, and South-East Asia.

As a Senior Software Engineer, you'll be integral to a highly competent team working on mission-critical applications. The role involves full software development lifecycle responsibilities, from concept and design to testing, with a focus on Java application development. You'll be working with cutting-edge technologies in a dynamic, fast-paced environment.

The ideal candidate should have strong expertise in the Java ecosystem, including Spring Framework and JPA/Hibernate, along with experience in asynchronous messaging technologies and HTTP web services. Knowledge of distributed systems and microservices architecture is highly valued. The role offers opportunities to mentor junior developers while working on challenging projects that impact millions of users.

The position offers competitive compensation and benefits, with the unique opportunity to work alongside a dynamic, smart, and highly motivated team. Upstream maintains a strong commitment to equal opportunity employment and fostering an inclusive workplace environment. Join a global technology leader that's transforming how businesses engage with their customers through innovative digital solutions.

Senior Java Engineer role at Upstream, developing mission-critical applications for a global mobile technology leader serving 1.2B consumers across 45 countries.

Senior Software Engineer, Java

Leader in mobile technology providing innovative solutions to 1.2 billion consumers, helping businesses grow digital reach across 45 countries.

Upstream, a leader in mobile technology, is seeking a Senior DevOps Engineer to join their team serving 1.2 billion consumers across 45 countries. The company specializes in digital solutions, helping businesses optimize user experience and boost revenues through innovative mobile technology.

The role focuses on infrastructure management and development operations, requiring expertise in both development and operations. The ideal candidate will be responsible for maintaining and scaling infrastructure, working with container technologies, cloud platforms, and various programming languages. They'll be instrumental in designing deployment strategies, developing tools, and ensuring system performance and reliability.

This position offers an opportunity to work with cutting-edge technologies in a fast-paced environment, handling mission-critical systems that serve major clients in Telco, Insurance, Education, FMCGs, and Retail sectors. The role combines hands-on development with infrastructure management, requiring both technical expertise and strong communication skills.

Working in a hybrid environment, you'll collaborate with a dynamic team of engineers, contributing to the evolution of the company's technical infrastructure. The position offers competitive compensation and benefits, with the excitement of working in a fast-paced, innovative environment. The company promotes an inclusive culture, being an equal-opportunity employer committed to workplace diversity.

Senior DevOps Engineer position at Upstream, leading mobile technology solutions provider, focusing on infrastructure management and development operations.

Senior DevOps Engineer

Upstream, a leader in mobile technology, is seeking a Senior DevOps Engineer to join their team serving 1.2 billion consumers across 45 countries. The company specializes in helping businesses optimize user experience and boost revenues through innovative digital solutions.

The role focuses on infrastructure management and development operations, requiring expertise in both development and operations. The ideal candidate will be responsible for maintaining and scaling infrastructure, working with container technologies, cloud platforms, and various programming languages. They'll be instrumental in designing deployment strategies, developing tools, and ensuring system performance and reliability.

This position offers an opportunity to work with cutting-edge technologies in a fast-paced environment, handling mission-critical systems that serve major clients in Telco, Insurance, Education, FMCGs, and Retail sectors. The role combines hands-on development with infrastructure management, requiring both technical expertise and strong communication skills.

The company offers a competitive compensation package and the chance to work with a dynamic, smart team in an agile environment. This role is perfect for someone who is passionate about Linux, cloud infrastructure, and has a developer-oriented mindset, offering the opportunity to make a significant impact on a global scale.

Senior DevOps Engineer role at Upstream, focusing on infrastructure management and development operations for a global mobile technology leader.

Upstream, a leader in mobile technology, is seeking a Network Engineer to join their Networks team. The company serves 1.2 billion consumers across 45 countries in Latin America, Africa, the Middle East, and South-East Asia, providing innovative solutions for digital growth and user experience optimization.

As a Network Engineer, you'll be part of a skilled team responsible for ensuring the reliability and performance of corporate network systems. The role demands expertise in network/security device administration, troubleshooting, and deployment activities. You'll work with cutting-edge technologies including Cisco networks, various firewall systems, and cloud platforms.

The ideal candidate brings 5+ years of networking experience, strong technical foundations in network engineering concepts, and relevant certifications like CCNA. Knowledge of Linux and cloud platforms (AWS/Azure) is valuable. The role offers growth opportunities through continuous learning and technical specialization.

Working in a hybrid environment, you'll collaborate with a dynamic, smart team in a fast-paced setting. The position includes competitive compensation and benefits, with opportunities to work on challenging projects that impact millions of users globally. The company promotes an inclusive culture and is an equal-opportunity employer, making it an excellent choice for professionals seeking to advance their networking career.

Network Engineer position at Upstream, managing network infrastructure and security for a global mobile technology leader serving 1.2 billion consumers.

Network Engineer

A leader in mobile technology providing innovative solutions to 1.2 billion consumers, helping businesses grow digital reach across 45 countries.

Upstream, a leader in mobile technology, is seeking a Cloud Platform Engineer to join their innovative team. The company serves 1.2 billion consumers across 45 countries, providing cutting-edge digital solutions to major industries including Telco, Insurance, Education, FMCGs, and Retail.

The role focuses on cloud infrastructure and platform engineering, where you'll be instrumental in shaping the future of their deployment strategies and infrastructure scaling. As a Cloud Platform Engineer, you'll work with both on-premise and cloud environments, managing everything from VMware virtualization to container orchestration with Kubernetes.

The ideal candidate is a passionate engineer who thrives in a Linux environment, has strong cloud infrastructure experience, and is comfortable working with multiple programming languages. You'll be responsible for designing high-volume, low-latency applications, implementing Infrastructure as Code, and maintaining both cloud and on-premise infrastructure.

This position offers an exciting opportunity to work with cutting-edge technologies while contributing to systems that impact billions of users. You'll be part of a dynamic, smart, and agile team in a fast-paced environment, working with technologies like AWS, Azure, Kubernetes, and various programming languages including Python, Go, and Java.

The role combines technical depth with broad infrastructure responsibilities, making it perfect for engineers who enjoy both hands-on technical work and strategic infrastructure planning. You'll have the chance to work on everything from CI/CD pipelines to performance optimization, while collaborating with teams across the organization to deliver robust, scalable solutions.

Cloud Platform Engineer position at Upstream, focusing on cloud infrastructure, DevOps, and platform engineering across multiple technologies and environments.

Cloud Platform Engineer

Upstream, a leader in mobile technology, is seeking a Business Intelligence Engineer to join their growing BI team in Athens, Greece. The company serves 1.2 billion consumers across 45 countries in Latin America, Africa, the Middle East, and South-East Asia, partnering with major players in Telco, Insurance, Education, FMCGs, and Retail sectors.

As a BI Engineer, you'll be at the forefront of delivering crucial solutions for day-to-day and strategic decision-making. The role offers a comprehensive experience across various BI areas, from requirement analysis to data management, ETL processes, and visualization. You'll work with diverse products and collaborate with stakeholders worldwide, having the freedom to make design decisions and propose innovative solutions.

The ideal candidate should have strong SQL expertise, Python programming skills, and experience with BI reporting tools. You'll be responsible for designing and maintaining data pipelines, creating dashboards, and ensuring the optimal performance of BI infrastructure. The position offers the opportunity to work with big data volumes and contribute to the company's data-driven decision-making process.

Working at Upstream means joining a dynamic, smart, and highly motivated team in a competitive, fast-paced environment. The company values innovation and fresh ideas, providing opportunities for professional growth and development. With a commitment to equal opportunity employment and a diverse workplace, Upstream offers a collaborative environment where you can make a significant impact on the company's global operations.

Business Intelligence Engineer position at Upstream, focusing on data pipelines, ETL processes, and BI solutions for a global mobile technology leader.

Business Intelligence Engineer

Leader in mobile technology, providing innovative solutions to 1.2 billion consumers. They help businesses grow their digital reach & toolkits to optimize user experience, increase engagement, attract new customers and boost revenues.

Upstream, a leader in mobile technology, is seeking an enthusiastic Senior Big Data Developer to join their Software Development team in Athens, Greece. As a Senior Software Engineer, you'll be part of a competent team working on mission-critical applications throughout the entire development lifecycle. You'll use a modern tech-stack including Apache Spark, Hadoop, Kafka, Spring Boot, Java/Scala, and Data Lake to build the Data and Reporting layer of their products, processing hundreds of millions of messages per day.

Key responsibilities include:
- Working on big data platforms including data ingestions and data warehouse development
- Programming in distributed messaging and data processing systems: Kafka, Spark
- Designing, developing, and supporting ETL processes
- Writing well-designed, maintainable, testable, efficient software modules
- Ensuring designs comply with specifications
- Providing support for production systems
- Supporting continuous improvement by investigating alternatives and new technologies

The ideal candidate will have:
- BSc/MSc in Computer Science, Engineering or equivalent
- 4+ years of full-time professional experience
- Experience programming in Java or Scala or other functional programming languages
- Excellent knowledge of SQL
- Familiarity with build tools such as Maven or Gradle
- Proficient understanding of Git and its workflows

Preferred skills include experience with Spark, Hadoop, Kafka, and Data Warehouses.

Upstream offers a competitive base salary and benefits, along with the opportunity to work in a dynamic, fast-paced environment with a smart and motivated team. They have adopted a hybrid work mode, with HQ offices based in Gerakas. Join Upstream and be part of a company that's at the forefront of mobile technology innovation!

Senior Big Data Developer role at Upstream, working with Java/Scala on distributed data processing systems in Athens, Greece.

Upstream Engineering Jobs

A leader in mobile technology providing innovative solutions to 1.2 billion consumers, helping businesses grow digital reach and optimize user experience across 45 countries.