Our company
We are a leader in mobile technology, providing innovative solutions to 1.2 billion consumers. In an ever-increasing digital world we help businesses grow their digital reach & toolkits to optimize user experience, increase engagement, attract new customers and boost their revenues.
Think of performance marketing but on steroids as our top-notch marketeers and engineers build digital journeys through an omnichannel marketing approach like no other. Currently we work with the biggest names in Telco, Insurance, Education, FMCGs and Retail in over 45 countries in Latin America, Africa, the Middle East and South-East Asia.
The role
Due to our global expansion we are looking for an enthusiastic Senior Big Data Developer to join our Software Development team in Athens, Greece.
Our HQ offices are based in Gerakas and we have adopted a hybrid work mode.
As a Senior Software Engineer you will be part of a very competent team that works on mission – critical applications throughout the entire development lifecycle, from concept and design, to developing and delivering to production. You will use a modern tech-stack for distributed data processing, such as Apache Spark, Hadoop, Kafka, Spring Boot, Java/Scala, and Data Lake to build the Data and Reporting layer of our products, processing hundreds of millions of messages per day. You will work in a cross-functional team with QA Automation and Dev Ops Engineers. You will collaborate with UI, Back-end teams and Product Managers to produce our world-class Marketing Technology Platform.
We use the industry best practices and prioritize providing an exceptional developer experience, which means that you will have the tools and support you need to thrive in your role. You'll have the opportunity to work with top-tier private cloud infrastructure. We believe in fostering an environment that allows you to reach your full potential and deliver high-quality work with confidence.
Your main responsibilities will be:

• Work on big data platforms including data ingestions and data warehouse development
• Programming in distributed messaging and data processing systems: Kafka, Spark
• Design, develop, and support new and existing ETL processes employing industry standards and best practices to enhance loading of data from and into different source/ target systems
• Write well designed, maintainable, testable, efficient software modules
• Ensure designs are in compliance with specifications and that specifications cover all needed aspects of the implementation
• Provide support for production systems
• Support continuous improvement by investigating and presenting alternatives and new technologies

Requirements
The skills we require:

• 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

The skills we prefer:

• Experience with a distributed data processing platform such as Spark, Hadoop
• Experience with a distributed messaging system such as Kafka
• Experience working with Data Warehouses

You will be an excellent fit for our team if you are:

• Strong team player with good communication skills
• Eager to work with leading-edge technologies
• Analytical thinker with attention to detail
• Reliable and dedicated professional with clear thinking and strong attention to detail
• Able to multitask and thrive in a dynamic environment as well as balance and prioritize activities to ensure critical items are addressed

Benefits
We offer a competitive base salary and benefits, directly dependent on the candidate’s qualifications and skills. The real excitement comes from working closely with a dynamic, smart, agile, and highly motivated team in a competitive and fast-paced environment.
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Upstream is an equal-opportunity employer. The Company does not discriminate on the basis of race, color, creed, pregnancy, religion, gender, national origin, age, disability, marital, or any other legally protected status. The Company also makes reasonable accommodations for disabled employees. Finally, the Company prohibits the harassment of any individual based on their protected status. This policy applies to all areas of personnel actions including recruitment, hiring, training, promotion, compensation, benefits, transfer,and social and recreational programs