Data Scientist (AdTech)

Location: Vilnius, Lithuania; onsite role

Salary: €3,300–€4,900 gross per month

Company

hirify.global develops advertising technology solutions using large-scale advertising data, machine learning, and cross-functional product and engineering expertise.

What you will do

• Build and experiment with scalable machine learning and statistical models, including simulations, scenarios, and edge cases.
• Develop solutions for advertising campaign optimization, audience targeting, bidding, and fraud detection.
• Analyze large-scale datasets to support model development and decision-making.
• Collaborate with Data Science, Engineering, Big Data, and Product teams to bring solutions into production and ensure they operate at scale.
• Maintain and improve existing algorithms, investigating cases where models or solutions underperform.
• Contribute ideas, challenge existing approaches, and share knowledge in a global, cross-functional team.

Requirements

• 2–5 years of professional experience in Data Science or a closely related field.
• Strong mathematical and statistical skills, including statistical inference, and experience working with large datasets.
• Hands-on experience with supervised and unsupervised machine learning techniques.
• Proficiency in Python and SQL.
• Understanding of data pipelines and ETL processes.
• Strong analytical and problem-solving skills, including the ability to translate complex problems into practical, scalable solutions.
• Ability to communicate ideas clearly and collaborate effectively across teams in an international environment.
• Alignment with hirify.global’s guiding principles, including client value, ownership, collaboration, care, ambition, and decency.

Nice to have

• Master’s or PhD in Machine Learning, Computer Science, Applied Mathematics, Statistics, or a related quantitative field, or equivalent practical experience.
• Experience with big data technologies such as Spark or Hadoop.
• Knowledge of the AdTech industry, its solutions, and related web technologies.

Culture & Benefits

• Dynamic, international, and collaborative work environment with opportunities for rapid learning and professional development.
• Transparent leadership and support for career growth.
• Additional annual vacation days, healthcare and accident insurance, and two Trust Days.
• On-site canteen, pet-friendly office, referral rewards, global perks, work anniversary celebrations, and company events.
• Commitment to an inclusive, equal-opportunity workplace that values diverse backgrounds and perspectives.