
Senior Data Scientist
Surfshark
full-time
Posted on:
Location Type: Hybrid
Location: Vilnius • Lithuania
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Salary
💰 €3,500 - €6,800 per month
Job Level
About the role
- Design, build, and productionize NLP-heavy machine learning systems, including text classification, entity extraction, semantic similarity, and LLM-based workflows;
- Write clean, efficient, and testable Python for data pipelines, feature engineering, modeling, and evaluation;
- Own models end-to-end: problem framing, data exploration, modeling choices, validation, deployment, and iteration;
- Work closely with product, engineering, and UX to turn ambiguous problems into concrete, data-driven solutions;
- Evaluate and apply modern NLP approaches, from classical methods to transformer-based and generative models, with a pragmatic bias toward impact;
- Communicate findings clearly to both technical and non-technical stakeholders, focusing on decisions, trade-offs, and outcomes rather than theory.
Requirements
- Proven experience in applied data science or machine learning, with clear ownership of shipped models;
- Strong NLP background, including hands-on experience with text modeling, embeddings, transformers, or LLM-based systems;
- Advanced Python skills: you write production-quality code;
- Solid SQL skills and experience working with large, imperfect, real-world datasets;
- Strong understanding of machine learning fundamentals, model evaluation, and failure modes;
- Ability to translate business problems into modeling approaches, and to explain results without hiding behind jargon;
- Experience working in modern engineering environments (code reviews, testing, version control, CI/CD).
Benefits
- Growth and learning opportunities: time dedicated to learning, conferences, online learning platforms, and books for your professional development;
- Health and wellness: we want you to feel and be your best. That's why we offer various benefits, from online workouts, a physical coach and a gym to regular mental health checks;
- Tools of your choice: choose technical equipment and the tools you need to do your best;
- Community and celebrations: get ready for long-lasting traditions such as yearly workation, Friday get-togethers, various team buildings and company celebrations;
- Convenient commuting: traveling from point A to point B can be a pain. That’s why, depending on your unique circumstances, we compensate part of your public transport costs;
- Work-life balance: We encourage working in the office, with the possibility of up to two remote days per week. Plus, with our WFA policy, you can work from almost anywhere in the world;
- Premium Surfshark accounts: for you, your family, and friends;
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
NLPmachine learningtext classificationentity extractionsemantic similarityPythonSQLmodel evaluationtransformersLLM-based systems
Soft Skills
problem framingdata explorationcommunicationtranslating business problemscollaborationdecision-makingtrade-offs analysisiterationexplaining resultsadaptability