Senior Mobile Engineer

European Tech Recruit

Boiro, Spain

7 days ago

Role details

Contract type

Permanent contract

Employment type

Full-time (> 32 hours)

Working hours

Regular working hours

Languages

English

Experience level

Intermediate

Job location

Boiro, Spain

Tech stack

Flutter

Java

API

iOS

Mobile Application Development

Software Quality

Code Review

Data Transmissions

Dependency Injection

Model View ViewModel

Objective-C

Software Engineering

Backend

Kotlin

Dart

GraphQL

React

Microservices

Job description

Our client is seeking a Senior Mobile Engineer with deep experience in Flutter and strong native Android skills (iOS experience is a plus). In this role, you'll play a key part in scaling our mobile platform-building high-performance, cross-platform features while using your native engineering expertise to optimize platform-specific capabilities.

You will collaborate closely with product and design teams to translate complex requirements into fast, elegant, and reliable mobile experiences.

Key Responsibilities

Cross-Platform Feature Development

Design, build, and maintain mobile features using Flutter and Dart, ensuring a consistent and seamless user experience across both Android and iOS.

Native Integration & Optimization

Apply your Android (Kotlin/Java) expertise-and optionally iOS (Swift/Objective-C)-to write native modules, develop custom plugins, and optimize performance where Flutter alone is insufficient.

API Communication

Implement efficient data communication with backend services using GraphQL (and optionally REST), focusing on reliability, performance, and robust error handling.

Code Quality & Standards

Write clean, maintainable, well-tested code. Participate in code reviews and contribute to defining and reinforcing best practices in both Flutter and native mobile development.

Collaboration

Work with Backend Engineers to shape effective GraphQL schemas and partner with Product and Design teams to ensure technical feasibility and an exceptional user experience.

Requirements

5+ years of professional software engineering experience, including at least 3+ years in mobile development with a history of shipping and maintaining production apps.

Core Technology
Expert-level proficiency in Flutter and Dart
Strong proficiency in a native mobile platform, preferably Android (Kotlin/Java), with bonus points for iOS experience (Swift/Objective-C)
Data Communication

Significant hands-on experience integrating mobile apps with backend services via GraphQL (e.g., Apollo, GraphQL-Flutter), with a strong understanding of best practices.