Senior Computational Linguist/Prompt Engineer

Senior Computational Linguist/Prompt Engineer Join Preply to apply for the Senior Computational Linguist/Prompt Engineer role. We power people’s progress by creating life-changing learning experiences. Through 90,000 tutors and more than 175 countries, we deliver over 20 million lessons that spark change, fuel ambition, and drive progress. Role Overview As a Computational Linguist (CL) / Prompt Engineer (PE) at Preply, your primary responsibility will be crafting, refining, and testing prompts designed to elicit high-quality insights from LLMs regarding how students learn languages. You will support our AI-driven educational platform by designing datasets and validation pipelines essential for prompt effectiveness. What you’ll be doing Write, evaluate and optimize prompts for LLMs specifically targeted at analyzing language learning processes Understand and employ prompt engineering techniques such as few-shot prompting, chain-of-thought, and contextual framing (zero-shot, few-shot, etc.) Develop and maintain datasets for prompt validation, including designing annotation guidelines, performing quality control, and generating synthetic or crowdsourced data Validate prompt outputs through both qualitative and quantitative evaluation procedures Use Python for automated prompt testing and quality validation Collaborate with engineers, product managers, and learning designers to improve prompt performance Stay informed of best practices in prompt engineering and advances in NLP and LLM research What you need to succeed Strong understanding of prompt engineering principles and experience with prompting LLMs 2‑3 years of experience in a similar role as a Computational Linguist or Prompt Engineer Proficiency in Python scripting and familiarity with dataset creation and validation processes Strong understanding of datasets, annotation workflows, and quality control in AI contexts Analytical mindset and attention to detail, with a collaborative team spirit Comfortable working in agile, cross-functional environments and handling multiple tasks efficiently Enthusiasm for AI in education and motivation to shape Preply’s next-gen learning tools Bachelor’s degree or higher in linguistics, English or Spanish Excellent command of English (spoken and written) and linguistic precision Why you'll love it at Preply An open, collaborative, dynamic and diverse culture A generous monthly allowance for lessons on Preply.com, Learning & Development budget and time off for your self-development A competitive financial package with equity, leave allowance and health insurance Location: Not in Barcelona? We offer an attractive relocation package to join us in our Preply Barcelona Hub Pension Plan Private health insurance Access to free mental health support platforms The opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting) Our Principles Care to change the world – we are passionate about our work and care deeply about its impact. We do it for learners – learners are why we do what we do. Keep perfecting – we focus on simplicity, smoothness and enjoyment, continually perfecting every detail. Now is the time – in a fast-paced world, we act quickly. Disciplined execution – we set clear goals and focus on what matters. Dive deep – we investigate disparities between numbers and stories to guide decisions. Growth mindset – we seek growth opportunities and learn from setbacks. Raise the bar – we continuously raise our performance standards. Challenge, disagree and commit – we value open communication and commit to decisions. One Preply – we prioritize collaboration, inclusion, and team success. Diversity, Equity, and Inclusion Preply.com is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We will consider all applications for employment without regard to race, color, religion, gender identity or expression, sexual orientation, national origin, disability, age or veteran status. Seniority level Mid-Senior level Employment type Full-time Job function Information Technology Industries Technology, Information and Internet #J-18808-Ljbffr