Senior App Engineer

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.

Meet the Team

At Preply, the Learning Tribe is reimagining how people learn languages by combining world-class tutors with intelligent AI-driven tools. We are building personalized learning journeys that keep learners motivated and help them achieve measurable progress.

We are looking for Senior App Engineers to join the Self-Learning Team, which develops tools that help students expand vocabulary, master conversation, and improve comprehension. Your work will directly shape how millions of learners study and communicate every day.

What You'll Do

• Build high-quality, scalable features for Preply's mobile apps using React Native, delivering them through our A/B experimentation framework.

• Work closely with product, design, data, and learning teams to turn learning science into engaging product experiences.

• Own features end-to-end, from prototype to monitoring in production, continuously improving performance and reliability.

• Write clean, maintainable, well-tested code and help elevate engineering quality through thoughtful code reviews.

• Contribute to discussions on architecture, tooling, and best practices that keep our apps fast, stable, and enjoyable to use.

What You'll Bring

• 5+ years in mobile development, including 3+ years with React Native.

• Strong proficiency in JavaScript/TypeScript and experience with libraries like Reanimated, Skia, Apollo Client, Expo, and React Navigation.

• Proven ability to build and ship products end-to-end, including monitoring and optimizing them after launch.

• Solid testing experience (unit and e2e) and familiarity with modern CI/CD workflows.

• Clear communication skills and a collaborative mindset; you enjoy solving problems with diverse teammates.

• Familiarity with agile development and a drive to improve both code and process.

Why Join Us

• Help define how AI and human expertise combine to accelerate learning.

• Collaborate with a skilled, mission-driven engineering team that values experimentation, knowledge sharing, and real impact.

• Work on products used daily by millions of learners in more than 175 countries.

• An open, collaborative, dynamic and diverse culture;

• A generous monthly allowance for lessons on , Learning & Development budget and time off for your self-development;

• A competitive financial package with equity, leave allowance and health insurance;

• Access to free mental health support platforms;

• Care 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.

is committed to creating an inclusive environment where people of diverse backgrounds can thrive. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company. That means that 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.