Upstream is hiring a

Data Science / Analytics Manager

Gerakas, Greece

Upstream, the leading mobile technology company, provides innovative solutions that offer seamless and secure mobile Internet access to 1.2 billion consumers in high growth markets. Upstream’s Zero-D service provides free access to the internet essentials to 250 million users in Latin America and Africa even when they have run out of data. Its award-winning security platform, Secure-D, in 2019 alone, processed over 1.7 billion mobile transactions, detecting and blocking over 98,000 malicious apps in 20 countries. Upstream’s all-in-one digital marketing platform, One-D, simplifies the digital user acquisition journey by managing the entire recruitment process, including partners and digital marketing channels, and safeguards mobile subscribers against all fraudulent activity. Its team counts 330 people of over 25 nationalities, working from nine offices around the globe. Upstream works with more than 60 mobile operators in over 45 countries in Latin America, Africa, the Middle East and SE Asia.

The role

The Data Science / Analytics Manager role is part of the Business Intelligence team within Upstream.

The Analytics Team services all departments within the company and supports multiple functions such as Revenue Forecasting, Billing Optimization, Fraud Detection with Digital Advertising, to name a few.

Your role will be to innovate with the use of data and analytics, to provide insights, deliver effective and actionable recommendations to improve our systems and processes and develop algorithms to become part of our core solutions. You will apply your skills in processing and analyzing big volumes of customer interaction data to unveil new patterns and trends, address business questions and uncover new kinds of threats for end consumers.

You will be the leading expert of a team of talented data scientists and will be expected to provide thought leadership within the team and to our stakeholders. You will have the opportunity to bring fresh views on how we currently do things at Upstream. You will be reporting to the Head of Business Intelligence and be expected to help shaping the evolution of the BI & Analytics capabilities within the company.

The suitable candidate should have a passion for data and problem solving, experience in statistics and software development, and the ability to develop and combine domain knowledge with statistical and machine learning methods. You will need to have strong interpersonal and communication skills, and the ability to work independently and as a team member and lead. Your work will ultimately allow Upstream to positively impact consumers around the world.

Prior experience in some of the following will be useful: digital advertising, fraud and risk detection, revenue forecasting, pricing optimization, customer segmentation, profiling and scoring.

Key Accountabilities

  • Develop, maintain and improve models and business processes used for KPI forecasting, customer lifetime value, segmentation and profiling.
  • Take advantage of large amounts of data to uncover new ad fraud and develop methodologies for identifying its activity in the advertising ecosystem.
  • Perform data analysis to understand and validate identified patterns.
  • Identify gaps and areas of improvements in our current methodologies.
  • Ensure quality control for production metrics through rigorous automated testing and monitoring.
  • Produce ad-hoc analysis, using raw data sources and reporting tools.


Knowledge, Skills and Experience

  • 5+ years of applied experience with data mining, statistical analysis and machine learning
  • Degree in Statistics, Mathematics, Physics, Computer Science, Engineering or other quantitative field or equivalent practical experience
  • Expert knowledge in one or more statistical computing and programming languages – e.g. R, Python, Julia, Weka, Knime
  • Experience in natural language processing methods and tools. Deep learning experience will be considered as a plus.
  • Ability to find answers to complex business and industry questions using big data, produce and present high-impact research.
  • Knowledge of web technologies (HTTP, HTML, JavaScript) will also be considered as a plus.
  • Good SQL and some exposure in ETL development
  • Experience in a digital / advertising role will be considered as a plus.

Personal Characteristics

  • Bright, ambitious, self-driven, hard-working and flexible.
  • Able to perform under pressure and deliver results in a demanding and fast-paced environment that requires fresh thinking and innovation.
  • Excellent written and spoken communication skills
  • Attention to detail
  • Keen to learn and understand the business
  • Strong quantitative, analytical and computer skills


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, colour, 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.

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