Data Scientist Jobs in Ljubljana.
All active Data Scientist roles based in Ljubljana.
Pick a job to read the details
Tap any role on the left — its description and apply link will open here.
Where data meets decisions!
Join us as a Senior Marketing Data Scientist and turn complex data into smarter marketing moves. From experimentation frameworks to profitability models, you’ll contribute to success and help shape data-driven marketing at Outfit7.
Responsibilities
- Collaborate with Distribution and Product teams to identify opportunities to improve distribution.
- Proactively discover and drive new data-driven approaches to optimize distribution.
- Work on ad hoc projects that support company strategy.
- Present and share new methodologies and best practices internally and externally.
- Build and maintain clean, scalable data pipelines and internal tools that reduce manual work, minimize errors, and enable at-scale optimization.
- Develop robust experimentation frameworks and perform analyses to support profit growth and distribution optimization.
- Communicate insights clearly, challenge outdated practices, and lead pragmatic improvements.
- Optimize data processing workflows to improve efficiency and performance.
- Advise the Marketing team on test design and experimental setups based on data insights.
- Contribute analytical perspectives to discussions and suggest improvements to campaign performance.
- Analyze results from various experiments and tests.
- Implement mathematical models to optimize the performance of Outfit7's marketing campaigns.
Required Skills
- Strong problem-solving skills with the ability to understand data and identify key trends.
- Advanced data analysis skills, particularly in SQL and R or Python.
- Ability to work efficiently in a fast-changing environment.
- Excellent communication and presentation skills; fluent in English (written and spoken).
- Proven ability to structure complex problems, conduct thorough analyses, and generate actionable insights from large datasets.
- Proficiency in reporting and explaining complex results to stakeholders from diverse professional backgrounds.
- Excellent attention to detail and a continuous-improvement mindset.
- A positive, proactive, lead-by-example attitude.
Required experience
- 5+ years of experience in a data scientist role, ideally in mobile gaming, performance marketing or related fields (you should know how to use data to help with business decisions).
- Proficiency in R or Python, primarily for statistical analysis, data manipulation, and visualisation.
- Experience with data analysis, reporting, and monitoring.
- Experience with data-oriented tools, such as SQL; familiarity with DBT is a plus.
- Proven ability to structure complex problems, conduct thorough analyses, and generate actionable insights from large datasets.
- Experience working with teams from different departments.
- Experience in leading a smaller team would be a plus.
What we offer
- Employment relationship with Ekipa2 d.o.o. for an indefinite period of time, with a six-month probationary period.
- Diverse work with exciting daily challenges, working as part of a team in a fun, relaxed environment.
- Participation in attractive projects.
- Development opportunities through training, seminars, and conferences.
- Choice of sport, fitness, educational, and entertainment activities outside of work.
- Healthy meals in the office.
- Flexible working hours.
- 24 days of paid vacation.
- Participation in a discretionary bonus plan.
- Christmas bonus (subject to internal company policies).
Marketinški podatkovni analitik IV.
Zahtevane so izkušnje iz področja podatkovne znanosti, idealno v performance marketingu, mobilnih igrah ali sorodnih področjih. Sklenitev delovnega razmerja nudimo za nedoločen delovni čas s šestmesečnim poskusnim delom v podjetju Ekipa2 d.o.o., s sedežem v Ljubljani.
Rok za prijavo: 30.5.2026.
Note: With application to selected job position I hereby confirm that I have read and understood Outfit7's Candidate Privacy Policy.
Ready to apply?
Apply to Outfit7
Got a passion for data science and mathematical modeling? Blessed with an excellent eye for details and for opportunities hiding in data? Want to add your talents for ideation and implementation to an already stellar team? Then you might be just the exceptional data scientist we’re searching for!
In this role you will
- Create mathematical models for better understanding the value of Outfit7’s users and of the profitability of Outfit7’s marketing campaigns.
- Optimize data processing workflows to improve efficiency and performance.
- Drive operational improvements within analytical processes and methodology, as well as campaign improvements.
- Help set priorities within the team based on business impact.
- Work efficiently as part of the team.
What we’re looking for
- Talent for data science methodology and practice, as well as storytelling capability.
- Proficiency in reporting and explaining complex results to people from different professional backgrounds.
- Excellent attention to detail and ability to find opportunities for improvements in dashboards and to follow through on changes.
- Positive, make-it-happen, lead-by-example attitude.
- Good communication and presentation skills, with fluency in the English language (both written and spoken).
Your experience
- 3+ years of experience working in data science using statistical methods.
- Experience with ML for modeling more complex concepts.
- Experience in data instrumentation and data collection, as well as in the use of tools for analyzing data (e.g. R, Python).
- Experience in marketing data science (or similar role) would be a plus.
What we offer
- Employment relationship with Ekipa2 d.o.o. for an indefinite period of time, with a six-month probationary period.
- Diverse work with exciting daily challenges, working as part of a team in a fun, relaxed environment.
- Participation in attractive projects.
- Development opportunities through training, seminars, and conferences.
- Choice of sport, fitness, educational, and entertainment activities outside of work.
- Healthy meals in the office.
- Flexible working hours.
- 24 days of paid vacation.
- Participation in a discretionary bonus plan.
- Christmas bonus (subject to internal company policies).
Note: With application to selected job position I hereby confirm that I have read and understood Outfit7's Candidate Privacy Policy.
Ready to apply?
Apply to Outfit7
Principal Engineer Consultant in Adtech - Data Science & AI Department
Share this job
About Teads
Teads is a leading omnichannel advertising platform focused on driving outcomes for brand and performance advertisers across screens. With a focus on meaningful business outcomes for branding and performance objectives, Teads drives value by leveraging predictive AI technology to connect quality media, beautiful brand creative, and context-driven addressability and measurement. Teads is directly partnered with more than 10,000 publishers and 20,000 advertisers globally. The company is headquartered in New York, New York with a global team of around 1,700 people in 30+ countries.
For more information, visit www.teads.com.
About the opportunity
We are seeking a Principal Engineer Consultant for our Data Science & AI department, with deep experience in the advertising industry, to join a team of passionate engineers who build advertising solutions at world scale. We build and operate large-scale distributed machine learning systems that make 1B predictions per second during real-time auctions.
The Principal position at Teads represents the highest level of seniority on the IC ladder. They are tackling cross-functional, strategical, and pivotal initiatives, prioritizing robust engineering choices. Principals are working closely with the Leadership, Product and Engineering teams, all while fostering a culture of excellence.
What will you do?
As a Principal Engineer in our Data Science & AI Department your mission will be to:
- Stay on top of the state-of-the-art science and technology of large scale advertising systems
- Areas of interest are models for CTR and CVR, foundation models for recommendation systems, on-line learning, cold start, embeddings for users, ads and similar,ad matching and ranking, pacing and optimal bidding, auction design, etc.
- Work with teams of data scientists and machine learning engineers to identify investment opportunities
- Help the teams across the organization in implementing the solutions as an advisor
- On projects you choose you will be a part of the implementation team where you will be expected to participate in bringing them projects to the production environment
- Work with product managers to find data science and AI projects with best cost/benefit risk/reward ratios
- Spend time experimenting with new approaches by yourself
- Follow industrial and academic research, occasionally publish at conferences
What will you bring to the team?
- Deep experience of the ad tech industry use of AI and data science
- Strong communication skills, working collaboratively with the team, able to teach concepts, and communicate complicated topics to expert audiences
- Strong problem solving skills, and ability to align teams on solutions
- True scientist skills: fast learner, curious, sense of details, rigorous
- Experience in Statistics (i.e. statistical analysis, regression analysis, …) and/or Artificial Intelligence (i.e. Data Mining, Machine Learning, …)
- Ability to read scientific articles, to analyze critically, and to implement as appropriate
- Good taste in architecture of AI systems
The team
- The AI department currently consists of 50 people who are a mix of data scientists, machine learning and backend engineers
- Your peers will all have deep experience from on-line ad systems from Teads and previous companies. We are staying at the bleeding edge of research and technology
- The department provides technologies that power outcomes of campaigns with a total yearly turn over of $1.7B
- Runs large scale prediction and control systems for ad delivery, dealing with millions of live ads, doing more than a billion predictions per second based on large on-line trained models being updated every 5 minutes
Life at Teads
At Teads, we don’t just offer new roles - we blend creativity, technology, and data to shape the future of media. You’ll work with smart humans, meaningful brands, and cool tools, all while helping redefine how advertising works in a world that demands more transparency, better insights, and smarter strategies.
As a Teadster, you’ll play a critical role in shaping our future success in the region. Here’s why Teads stands out:
- We've merged two open internet category leaders—Outbrain and Teads—to create the ‘new’ Teads, a unified omnichannel platform that drives results from branding to performance across all screens, including CTV, mobile, and web.
- As part of our team, you’ll thrive in a collaborative and forward-thinking environment that fosters innovation, creative problem-solving, and continuous learning.
- Teads is committed to your success, offering the support, tools, and development opportunities you need to excel in your role.
Our company culture is welcoming, dynamic, diverse, global, and built on top performance.
Teads is an equal employment opportunity employer and committed to diversity and inclusion at all stages of recruitment and employment.
Our team is made up of individuals who are approachable, resourceful, passionate, and proactive. We foster a sense of belonging through our Employee Resource Groups – employee-led groups in which we debate topics and drive change: environmental, women empowerment, charitable initiatives to diversity, equity, and inclusion, you’ll be able to share your passions with likeminded people.
Ready to apply?
Apply to Teads