Requirements

Hybrid Architecture Expertise: Proven track record of managing the nuances of WebView-to-Native communication and optimizing the critical rendering path within mobile shells.
Core Engineering Mastery: Deep-seated fluency in TypeScript and React, coupled with an "under-the-hood" understanding of browser engines, event loops, and DOM performance.
Performance-First Mindset: Demonstrated ability to profile and fix runtime jank, memory leaks, and network overhead using Chrome DevTools and synthetic monitoring.
DevOps & Tooling Proficiency: Hands-on experience scaling CI/CD pipelines (GitHub Actions, Docker) and configuring sophisticated build tools like Webpack, Vite, or Esbuild.
Strategic Problem Solving: A history of navigating technical debt and architectural ambiguity with a strong sense of ownership and the ability to influence stakeholders.
Data-Driven Reliability: Expert-level use of Sentry, Datadog, or New Relic to transform raw telemetry into actionable performance improvements.

What you'll be doing

Engineered high-performance frontend solutions that slashed global application load times, directly boosting user retention and conversion rates.
Architected and optimized seamless WebView integrations for iOS and Android, ensuring a native-like UX through sophisticated bridge communication and hybrid rendering strategies.
Native SDK integration, Work with Android and iOS SDKs to support hybrid or embedded web experiences (e.g., WebViews, SDK integrations).
Led the strategic modernization of a complex legacy monolith, decomposing tightly coupled code into a scalable, modular micro-frontend architecture.
Advanced technical excellence by implementing cutting-edge code splitting, tree shaking, and multi-tier caching strategies to minimize bundle sizes and execution overhead.
Partnered across organizational boundaries, aligning with native Host App engineers and product owners to synchronize release cycles and ensure seamless feature parity.
Established a culture of observability by defining core KPIs and deploying robust monitoring frameworks (SLIs/SLOs) to proactively resolve performance bottlenecks.

Make the most of our hybrid working model and join the team for face-to-face connection and collaboration in our beautiful Berlin campus 2 days a week
We offer 27 days holiday with an extra day on 2nd and 3rd year of service
We will support you in developing yourself and your career growth opportunities: 1.000 € Educational Budget, Language Courses, Parental Support and access to the Udemy Business platform to explore a variety of online courses.
Get moving and release those wonderful, mind-boosting endorphins: Health Checkups, Meditation, Gym & Bicycle Subsidy
Cash. Dough. Cheddar. Whatever you call it, we’ll help you with it: Employee Share Purchase Plan, Sabbatical Bank, Public Transportation Ticket Discount, Life & Accident Insurance, Corporate Pension Plan
The power of getting together over some food is unrivaled. Here are a few ways to help you do that. All the yum: Digital Meal Vouchers, Food Vouchers, Corporate Discounts. Courses.