Your day-to-dayExplore and preprocess raw, messy datasets; design labeling and data strategies where needed.Prototype model ideas, agentic/inference systems, prompt strategies, fine-tuning, and rigorous evaluations of hypotheses.Translate prototypes into production: build RESTful APIs, containerize applications (Docker), and deploy reliably.Monitor production performance, run ablation studies, and iterate with product, UX, and data teams to improve impact.Identify and investigate key open questions — why are these clusters meaningful, what decisions do they drive? — and craft well-reasoned solutions.Tackle ambiguous problems with curiosity, initiative, and a strong sense of ownership.Collaborate with cross-functional teams (Product, Design, DevOps, and UI) to turn ideas into shipped, impactful features.Your skills and experienceStrong Python programming skills with deep, hands-on experience.3+ years of experience working on LLM-related or advanced AI model projects (prompting, fine-tuning, or building generative agents).Knowledge of TypeScript, JavaScript, React, and front-end development fundamentals.Proven experience developing robust RESTful APIs and containerizing applications (Docker; Kubernetes is a plus).Solid Linux and DevOps skills, including Git, Jira, CI/CD pipelines, and performance monitoring.Strong analytical mindset — you don't just build clusters; you interpret their meaning, communicate impact, and connect insights to business outcomes.Ability to independently identify important questions and develop thoughtful, well-reasoned answers.Motivation to solve problems without ready-made solutions and to explore the unknown.Strong data analytics skills — beyond modeling, you interpret results, assess significance, and drive product decisions.Benefits that fuel your growth🚀 360 Growth: We provide limitless learning opportunities: access to platforms like Reforge and Couch Hub, global conferences, physical and digital libraries, feedback culture, and mentoring through TesoXchange. Advance your career with internal mobility and grow with a team eager to share knowledge and support your success.🎯 Freedom & responsibility: Work on your terms: from modern offices in Kaunas and Vilnius, the comfort of home, or anywhere in the world. Enjoy flexibility in managing your schedule and bring your ideas to life in a fast-paced, dynamic environment.💪Wellness simplified: Your health comes first with insurance from Day 1, gym memberships, recharge leave, Headspace subscriptions, and regular health checks. Join our wellbeing-dedicated events, sports, arts, and hobby clubs, or simply enjoy the balance of a lifestyle that prioritizes wellness.🎉 Work hard – party hard: Celebrate your achievements with company events like Summerfest & Winterfest, Town Hall, Meet the Client initiatives, team-buildings, and workations. Enjoy access to the Žalgiris Arena VIP Lounge and celebrate life’s big moments with milestone gifts for weddings, new parenthood, and graduations.CompensationGross salary 6,000 to 10,000 EUR/month. Salary is offered based on work experience, competence, and compliance with other job requirements.