Flutter Developer (Swift/Kotlin)

Nextlane; Madrid; Presencial; EUR 55.000 - 75.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Remote work up to 3 days a week

Summer Fridays

Referral bonus

Descripción de la vacante

Nextlane is seeking a skilled mobile developer to lead Flutter-based projects in a hybrid remote/on-site setup in Madrid. You will own end-to-end mobile features, collaborate with Product, Design and Backend teams, and drive architectural decisions to ensure scalable, high-quality apps.

Fluency in English and Spanish is required, with a focus on maintainable code and performance. The role offers opportunities to mentor others, contribute to testing strategies, and work across iOS and Android

Formación

• 4-6+ years of experience in mobile development.
• Proficient in Flutter and Dart with production app experience.
• Strong understanding of mobile architecture, design patterns, and SOLID principles.
• Experience with REST API integration and backend services.
• Proficient in English and Spanish; strong communication skills.

Responsabilidades

• Own the design, development, and delivery of complex mobile features and systems across our applications.
• Build scalable, maintainable, high-quality solutions using Flutter while contributing to native iOS and Android development when required.
• Drive technical decisions balancing business needs, delivery timelines, performance and maintainability.
• Contribute to evolution of mobile architecture, development practices, and engineering standards.
• Mentor engineers through code reviews and knowledge sharing.

Conocimientos

Flutter

Dart

REST APIs

CI/CD

Testing strategies

Riverpod

Git workflows

Swift

Kotlin

Software architecture

Herramientas

Git-based workflows

CI/CD

App Store publishing

Google Play publishing

Swift

Kotlin

Descripción del empleo

About Us

At Nextlane, we don’t just develop software solutions – we create the future of the automotive industry. We are a company that combines advanced technology with a clear vision: simplifying and digitizing every step of the automotive customer journey, empowering manufacturers and dealerships to thrive in a constantly evolving market. We believe in the value of every team member, offering opportunities for you to develop and contribute to meaningful solutions.

So… What does it mean to be a #Nextlaner?

• Be part of a growth-oriented culture.
• Collaborate with colleagues from all over the world.
• Believe in the Power of ideas and the diversity of thought.
• Be committed to provide an environment where you can learn, grow, and collaborate on projects that make a global impact.

Our success is measured not just by results, but also by the growth and satisfaction of those who are part of our company.

At Nextlane, you’ll have the opportunity to innovate, push boundaries, and work on solutions that are transforming the automotive world.

Your Responsibilities

As a key member of the team, you will be responsible for:

• Own the design, development, and delivery of complex mobile features and systems across our applications.
• Build scalable, maintainable, and high-quality solutions using Flutter while contributing to native iOS and Android development when required.
• Drive technical decisions, balancing business needs, delivery timelines, performance, and long-term maintainability.
• Contribute to the evolution of our mobile architecture, development practices, and engineering standards.
• Collaborate closely with Product, Design, Backend, and Engineering teams to deliver outstanding user experiences.
• Lead complex integrations with backend services and ensure applications remain reliable, secure, and performant.
• Define and improve testing, release, and quality practices to ensure safe and predictable delivery.
• Identify technical risks early and propose solutions that reduce complexity and support future growth.
• Lead refactoring and modernization initiatives that improve the health of the codebase.
• Mentor other engineers through technical guidance, code reviews, and knowledge sharing.

Act as a technical leader within the team, driving engineering excellence and helping raise the overall quality of our mobile platform.

What We're Looking For

• Interpersonal Skills: Ability to collaborate in a diverse and dynamic environment.
• Experience: 4-6+ years
• Languages: English, Spanish
• Communication: Strong communication skills, both verbal and written ability to influence technical decisions constructively.
• Strong software engineering fundamentals, including architecture, design patterns, testing, and system design.
• Proven ability to deliver complex features with a high degree of ownership and autonomy.
• Experience making architectural decisions and evaluating technical trade-offs.
• Strong problem-solving skills and the ability to navigate ambiguity in complex systems.
• A quality-focused mindset with experience improving engineering practices and development processes.
• Experience mentoring engineers and collaborating effectively within cross-functional teams.
• A quality-focused mindset with experience improving engineering practices and development processes.

Technical Skills

• Strong professional experience developing mobile applications with Flutter and Dart.
• Proven experience building, maintaining, and scaling production mobile applications.
• Strong understanding of mobile architecture, design patterns, state management, asynchronous programming, and performance optimization. Understanding clean architecture and SOLID principles.
• Experience using and implementing state management with Riverpod.
• Experience integrating mobile applications with REST APIs and backend services.
• Experience designing and implementing automated testing strategies, including unit, integration, and UI tests.
• Strong experience with CI/CD pipelines, automated deployments, and mobile release processes.
• Strong understanding of software engineering best practices, including code quality, maintainability, security, and observability.
• Experience working with Git-based development workflows and collaborative engineering practices.
• Experience developing native mobile features using Swift and/or Kotlin.
• Understanding of platform-specific capabilities and experience integrating Flutter applications with native iOS and Android code.
• Experience publishing and maintaining applications on the App Store and Google Play Store.
• Familiarity with analytics, crash reporting, performance monitoring, and feature flagging solutions.
• Ability to evaluate technical trade-offs and contribute to architectural decisions across the mobile platform.
• Nice to have:
• Familiarity of the Patrol testing framework.

Our Recruitment Process

• Call with a Talent Acquisition Specialist.
• Soft Skill interview with the manager
• Technical test
• Technical interview

What We Offer

We understand that flexibility and trust are essential for our teams. Here are some of the benefits we offer:

• Remote Work: Up to 3 days a week!
• Work-life balance: We have flexible entrance and departure time.
• Summer schedule on Fridays: Start early your weekends!
• Referral Bonus: €1500 for every talent you refer (after 6 months).
• Flexible Remuneration: COBEE platform.
• Private Medical Insurance: Adeslas.
• Continuous Learning: Access to our internal platform for continuous development.
• Vacation: 23 vacation days plus an intensive schedule in July and August.
• Teambuilding: Our afterworks and activities are memorable!

Diversity, Inclusion & Belonging

At Nextlane, we are committed to creating a space where everyone feels valued and respected. We firmly believe that diversity in experiences and backgrounds strengthens our culture and drives innovation.

• Support for people with disabilities. If you need any adjustments during the recruitment process, let us know so we can provide the best possible experience.
• Equal opportunities for all: We welcome applications regardless of age, gender, origin, disability, or any other characteristic protected by law.

Join Nextlane

Join Nextlane and become part of the technological revolution in the automotive industry.

Discover why we are a great place to develop your talent!