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 personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.
We’ve just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. Today, 100,000+ tutors teach 90+ languages to learners in 180 countries - and we’re only getting started. As a category-defining company, we’re shaping what the future of learning looks like at global scale.
Every Preply lesson sparks change, fuels ambition, and drives progress that matters. Joining Preply means helping define the future of education at integral scale, and building something that truly matters for millions of people, every day.
Role Overview
As a Computational Linguist at Preply, you will combine linguistic expertise with technical skills to build and evaluate language-learning solutions powered by AI.



You will analyse and formalise linguistic phenomena, design prompts and linguistic logic, build evaluation, training, and calibration datasets, investigate model behaviour and quality issues, and contribute to tooling and pipelines that help us scale reliable language-learning experiences across languages.
What you’ll be doing:
• Formalise linguistic phenomena into clear rules, taxonomies, annotation criteria, and system or model requirements.

• Design, evaluate, and improve prompts and other AI components for language-learning use cases.

• Build representative datasets for training, calibration, and evaluation, including annotation guidelines and quality-control processes.

• Evaluate model behaviour using qualitative and quantitative methods, investigate failure modes and quality issues, and validate fixes across prompts, models, data, and downstream processing.

• Use Python and existing tooling to process l

📌 Senior Computational Lingiust (Barcelona)
🏢 Preply
📍 Barcelona