OverviewAs 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.We power people's progress.At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalized learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact. So far, 90,000 tutors have delivered over 20 million lessons to learners in more than 175 countries. Every Preply lesson sparks change, fuels ambition, and drives progress that matters.What you’ll be doingWrite, evaluate and optimize prompts for LLMs specifically targeted at analyzing language learning processesUnderstand 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 dataValidate prompt outputs through both qualitative and quantitative evaluation proceduresUse Python for automated prompt testing and quality validationCollaborate with engineers, product managers, and learning designers to improve prompt performanceStay informed of best practices in prompt engineering and advances in NLP and LLM researchWhat you need to succeedStrong understanding of prompt engineering principles and experience with prompting LLMs2-3 years of experience in a similar role as a Computational Linguist or Prompt EngineerProficiency in Python scripting and familiarity with dataset creation and validation processesStrong understanding of datasets, annotation workflows, and quality control in AI contextsAnalytical mindset and attention to detail, with a collaborative team spiritComfortable working in agile, cross-functional environments and handling multiple tasks efficientlyEnthusiasm for AI in education and motivation to shape Preply’s next-gen learning toolsBachelor’s degree or higher in linguistics, English or SpanishExcellent command of English (spoken and written) and linguistic precisionWhy you’ll love it at PreplyAn open, collaborative, dynamic and diverse cultureA generous monthly allowance for lessons on Preply.com, Learning & Development budget and time off for your self-developmentA competitive financial package with equity, leave allowance and health insuranceNot in Barcelona? We offer an attractive relocation package to join us in our Preply Barcelona HubAccess to free mental health support platformsAccess to Gympass-partnered wellness and gym centers throughout Spain to promote and support well-being and physical healthThe opportunity to unlock the potential of learners and tutors through language learning and teaching in 175 countries (and counting!)Our PrinciplesCare to change the world - We are passionate about our work and care deeply about its impact to be life changing.We do it for learners - For both Preply and tutors, learners are why we do what we do. Every day we focus on empowering tutors to deliver an exceptional learning experience.Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.Now is the time - In a fast-paced world, it matters how quickly we act. Now is the time to make great things happen.Disciplined execution - What makes us disciplined is the excellence in our execution. We set clear goals, focus on what matters, and utilize our resources efficiently.Dive deep - We leverage business acumen and curiosity to investigate disparities between numbers and stories, unlocking meaningful insights to guide our decisions.Growth mindset - We proactively seek growth opportunities and believe today\'s best performance becomes tomorrow\'s starting point. We humbly embrace feedback and learn from setbacks.Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. We build diverse and high-performing teams that can make a real difference.Challenge, disagree and commit - We value open and candid communication, even when we don’t fully agree. We speak our minds, challenge when necessary, and fully commit to decisions once made.One Preply - We prioritize collaboration, inclusion, and the success of our team over personal ambitions. Together, we support and celebrate each other\'s progress.Diversity, Equity, and InclusionPreply is committed to creating a diverse and inclusive environment where people from all backgrounds can thrive. Different opinions and viewpoints are key ingredients in our success as a multicultural Ed-Tech company.Preply 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. Together, we are The World Class.#LI-VL1 #J-18808-Ljbffr