Mobile App Engineer (React, Native Mobile)

TL;DR

Mobile App Engineer (React, Native Mobile): Developing and maintaining cross-platform mobile applications delivering real-time energy market insights, analytics, and intelligence with an accent on mobile architecture, performance optimization, and release process. Focus on integrating backend APIs, analytics, push notifications, and native features across iOS and Android.

Location: Hybrid work model from our Gdynia or Warsaw, Poland office (1 day per week on-site).

Salary: 1,000–1,300 PLN/MD (B2B, full-time)

Company

Our Client is an established and rapidly growing research-based consulting firm in the energy sector, providing industry-leading analyses and forecasts of energy markets.

What you will do

• Develop and maintain Capacitor-based mobile apps, leveraging React/Next.js for UI and native modules for platform-specific features.
• Manage the release cycle and deployment to app stores for mobile applications.
• Own the mobile component of our push notification engine, via Apple APNS and FCM on Firebase.
• Collaborate with UX/UI designers and engineers to implement mobile features.
• Monitor app health via analytics and crash reporting, and drive performance optimizations.

Requirements

• Strong hands-on experience building and maintaining cross-platform mobile applications using Capacitor, React, and Next.js, plus native iOS (Swift/Objective-C) and Android (Kotlin/Java) development.
• Experience managing mobile app release cycles, CI/CD pipelines, and App Store/Google Play deployments.
• Proven knowledge of push notification systems (APNS and Firebase Cloud Messaging), RESTful APIs, authentication mechanisms, and data integration patterns.
• Experience with automated testing frameworks (e.g., XCTest, Espresso, Playwright, Appium).
• Excellent communication skills and fluency in spoken and written English (C1).
• Ability to work in a hybrid model from Gdynia or Warsaw, Poland (1 day per week on-site).

Nice to have

• Exposure to serverless architectures or deployment platforms (e.g., Vercel).

Culture & Benefits

• High level of autonomy and technical ownership with real influence on architectural and product decisions.
• Opportunity to own and shape the mobile domain within a data-driven, market-leading product.
• Inclusive, multicultural workplace with a strong focus on employee wellbeing and work-life balance.
• Access to a proprietary professional development programme.