Senior Mobile Developer

Confidential

Sofia Hybrid permanent

Posted: March 2, 2026

Quick Summary

We're looking for a Senior Mobile Developer to join our team, with a strong background in mobile app development and a passion for building scalable and efficient solutions. This role requires a deep understanding of mobile app development best practices and a strong ability to work in a distributed environment. Bonus points for experience with Remix's proprietary operating platform and experience with data science expertise.

Required Skills

Job Description

Remix is one of the leading online secondhand marketplaces in the EU, currently operating in 10 European markets and expanding. We are on a mission to make secondhand fashion the first choice. We believe in a sustainable future for fashion, giving pre-loved clothes a new life, and reshaping the resale market through innovation. Powered by technology, our proprietary operating platform drives our managed marketplace - combining distributed processing infrastructure, proprietary software, and data science expertise to transform fashion resale.

The Role

We're looking for a Senior Mobile Developer with expertise in Flutter to help us design, develop, and maintain high-quality mobile applications. You’ll play a key role in our mobile strategy, working closely with product managers, designers, and fellow engineers to deliver delightful user experiences.

What You’ll Do

Collaborate with product and design teams to understand user requirements and translate them into technical solutions.

Write clean, maintainable, and scalable code.

Optimize app performance for speed and responsiveness.

Conduct code reviews and maintain high standards of code quality.

Stay up-to-date with the latest trends in mobile development and Flutter best practices.

Integrate with RESTful APIs and third-party services.

Participate in architectural discussions and contribute to decision-making.

What You’ll Need

5+ years of professional experience in mobile development.

1+ years of hands-on experience with Flutter and Dart.

Strong knowledge of mobile app architecture and state management (e.g., BLoC, Provider).

Experience publishing apps to the App Store and Google Play.

Solid understanding of REST APIs, JSON, and mobile app performance optimization.

Experience with CI/CD for mobile apps (e.g.,Codemagic).

Familiarity with version control tools like Git.

Excellent problem-solving skills and a proactive attitude.

Nice to Have

Experience with Firebase or other backend services.

Native Android (Kotlin/Java) or iOS (Swift/Objective-C) development experience.

Experience with automated testing and test-driven development (TDD).

Previous work in an Agile/Scrum environment.

Proficiency in integrating native modules using platform channels.

What we offer

Competitive remuneration

Individual career growth plan

Additional health insurance

Food vouchers worth up to €102.26

Multisport card

Work-life balance & social events

Free snacks, soft drinks, coffee, and fruits

A job with a mission

How to Apply

If you are a tech-savvy professional who thrives on building innovative software solutions, we’d love to have you on our team!

*All applications will be treated with strict confidentiality. Only short-listed candidates will be contacted.

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