Senior Front End DevEx Engineer in Platform

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.

Meet the team!

We seek a passionate Front End Engineer to enhance our developer experience, streamline software development and release processes, and leverage AI to improve efficiency. If you're excited about optimizing tooling, automating workflows, and empowering engineering teams with cutting-edge solutions, we want to hear from you!

The DevEx squad is a part of the Platform tribe responsible for growing our business by:

• providing our product squads with the infrastructure they require
• improving developer productivity within product squads
• maintaining high reliability of our services
• doing projects and handling issues that are company-wide so a single product squad can hardly address them by themselves

What you will be doing:

• Unlock Developer Productivity: Identify and resolve pain points in code, build, test, and deployment workflows to make our engineers’ lives easier.
• Support: Become the go-to expert for diagnosing and resolving development environment and tool issues.
• Tool Evaluation: Test, evaluate, and investigate software development tools, and collaborate with vendors to elevate our development process.
• Automation: Automate repetitive tasks and streamline development workflows.
• Collaboration: Partner with other tribes and squads in Platform tribe to deliver the best tools and practices for development workflows.
• Documentation and Training: Develop clear guidelines and conduct training sessions to help developers adopt new tools and processes.
• Onboarding: Simplify the onboarding process with user-friendly, self-service development environments.
• Technical Excellence: Help improve the Backend engineering experience and keep our tooling in tip top shape, including AWS running infrastructure and tools supporting our engineers.
• Data-Driven Improvements: Make measurable improvements to our CI/CD pipelines, ensuring fast and reliable builds (currently around 90 deployments per day).
• Infrastructure Optimization: Maintain and optimize our development and testing infrastructure to provide stable and efficient environments.

Must Have:

• Strong TypeScript/JavaScript expertise
• Experience with modern frontend build tools (Vite, Webpack etc.)
• Experience with constructing CI/CD pipelines (Jenkins and GitHub Actions preferred)
• Understanding of frontend testing approaches (unit, integration, storybook, screenshot, e2e)
• Experience with test automation and stability improvements
• Experience with frontend monorepo management
• Experience with npm package development and publishing
• Understanding of web performance optimization
• Experience with frontend application monitoring and debugging

Nice to Have:

• Experience with GraphQL
• Experience with Kubernetes
• Python development experience
• Experience with infrastructure as code (Terraform)
• Experience with AWS
• Experience with localization tooling and pipelines (crowdin)
• Experience improving build times and CI/CD reliability

Key Focus Areas:

1. Frontend Build & Test Infrastructure
• Optimizing build processes
• Improving test stability and speed
• Managing monorepo architecture
• Maintaining core packages for frontend services
• Implementing effective caching strategies
• Ownership of localization tooling
2. Developer Tooling
• CLI tools for common tasks
• Local development environment improvements
• IDE integrations
3. Performance & Monitoring
• Build performance metrics
• Test execution metrics
• Developer productivity metrics
• Infrastructure cost optimization

Why you’ll love it at Preply: 

• Open, collaborative, dynamic and diverse culture.
• Generous monthly allowance for lessons on Preply.com .
• Learning & Development budget, including time off for your self-development.
• Competitive financial package with equity, leave allowance and health insurance.
• Access to free mental health support platforms.
• Flexible set-up with the option of paid relocation to Barcelona, or working remotely within a close time zone.
• Opportunity to shape the lives of learners and tutors from over 175 countries through language learning and teaching.

Our Principles:

• 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.

Diversity, Equity, and Inclusion:

Preply 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.