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. 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 general scale, and building something that truly matters for millions of people, every day.Our team builds scalable, resilient products using Python/Django on the backend and React on the frontend, all with one goal in mind: creating a smooth, meaningful experience for our learners and tutors.We're proudly tech-agnostic, great engineers come from all kinds of backgrounds. Whether you've worked with Java/Spring, Node.Js, Ruby on Rails, Scala/Play, PHP, or Go, you'll feel right at home here. Python experience isn't required.We make decisions based on data and real user feedback: running A/B tests, shipping iteratively, and constantly improving.

We also put a strong focus on observability, monitoring, and metrics, so we can keep our systems healthy and continue optimizing at scale.As a fast-growing company, you'll find a wide range of technical challenges (we even write about many of them on our Engineering Blog!), We've reached 90%+ adoption of AI coding tools across engineering, and we're now moving towards more autonomous, AI-Augmented development at scale. What you'll be doingYou will work in a cross-functional team alongside Product Managers, Product Designers, UX Writers, Data Analysts, Engineering Managers, Engineers, and other stakeholders to deliver meaningful outcomes for learners and tutors. As a Senior Full Stack Engineer, you will combine hands-on execution with technical leadership,



helping shape both product direction and engineering excellence through initiatives that drive customer and business impact, including, but not limited to:Back-end Development: Develop and own backend features using Python/Django, supporting the creation of new backend services as well as design, create, and/or troubleshoot integrations with third-party vendors.

- Develop and evolve frontend experiences in React/Typescript, contributing to experimentation frameworks and helping establish frontend engineering best practices
- Implementation & Ownership: Lead complex initiatives from discovery through deployment, taking ownership of solutions throughout their lifecycle and balancing immediate product needs with long-term sustainability
- Raising the Bar: Drive engineering excellence through mentorship, architectural reviews, and the adoption of best practices across frontend and backend development
- Data-Driven Product Development: Partner closely with Product, Data, and UX teammates to identify opportunities, validate hypotheses, and maximize customer value through experimentation and measurable outcomes
- Influence technical direction beyond your immediate scope, collaborating with engineers, managers, and stakeholders to drive alignment and successful delivery
- Continuously raise the quality bar through craftsmanship, curiosity, continuous learning, and a commitment to helping others grow.What you need to succeedFull-Stack Expertise: This is a backend-heavy full-stack role, with approximately 60% of the work focused on backend development and 40% on frontend development
- Able to redesign how the team builds software across the full SDLC, not just code generation.



You set up the AI quality gates and you challenge existing engineering workflows and propose AI-based alternatives.Experience designing and evolving large-scale web applications, including well-designed APIs, distributed systems, high-volume data flows, and scalable architectural patterns. Ability to make sound technical trade-offs that balance short-term delivery with long-term sustainability
- Product & Business Impact: Strong product mindset with the ability to translate ambiguous business challenges into scalable technical solutions, using experimentation, data, and customer insights to guide decisions
- Excellent collaboration, stakeholder management, and communication skills, with the ability to work effectively across engineering, product, design, and data functions. English level B2 or higher
- Understanding of observability, reliability, monitoring, and operational best practices, with willingness to participate in your squad's on-call rotation (1 week every 5 weeks)
- Why you'll love it at PreplyAn open, collaborative, dynamic and diverse culture
- Com, Learning & Development budget and time off for your self-development
- A competitive financial package with equity, leave allowance and health insurance;

We offer an attractive relocation package to join us in our Preply Barcelona Hub

- We do it for learners - For both Preply and tutors, learners are why we do what we do. 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. Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. Challenge, disagree and commit - We value open and candid communication, even when we don't fully agree. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company.

📌 Senior Backend Developer / Full Stack / Frontend Developers (Cataluña)
🏢 Preply
📍 Cataluña