Surfshark

Senior Data Scientist

Surfshark

full-time

Posted on:

Location Type: Hybrid

Location: VilniusLithuania

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Salary

💰 €3,500 - €6,800 per month

Job Level

Tech Stack

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