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Senior Flutter Developer

REMOTE ( worldwide)

Full Time

open rolesSenior Flutter Developer

About KoldaTech


KoldaTech is a custom software development company building scalable, high-impact digital products for startups and established businesses. We specialize in turning complex ideas into robust, production-ready solutions through strong engineering discipline, clean architecture, and rigorous quality standards.


We are looking for a Senior Flutter Developer who can take ownership of mobile applications end-to-end and contribute at both technical and architectural levels.



 Role Overview



As a Senior Flutter Developer, you will be responsible for designing, building, and maintaining high-quality cross-platform mobile applications. You will collaborate closely with product managers, designers, and backend engineers to deliver performant, secure, and scalable apps.


This role is for someone who writes production-grade code, understands trade-offs, and can mentor other developers when needed.



 Key Responsibilities



  • Design and develop scalable Flutter applications for iOS and Android
  • Own features from technical design → implementation → testing → release
  • Architect clean, modular, and testable Flutter codebases
  • Integrate RESTful APIs, GraphQL, and third-party SDKs
  • Implement state management solutions (Bloc, Riverpod, Provider, etc.)
  • Ensure app performance, responsiveness, and memory optimization
  • Handle app publishing and maintenance on App Store & Google Play
  • Collaborate with UI/UX designers to deliver pixel-perfect experiences
  • Participate in code reviews and enforce engineering best practices
  • Debug, troubleshoot, and resolve complex production issues
  • Mentor junior developers and contribute to technical decisions






✅ Required Qualifications



  • 5+ years of professional software development experience
  • 3+ years of hands-on Flutter development
  • Strong proficiency in Dart
  • Deep understanding of Flutter widget lifecycle and rendering
  • Solid experience with:
    • REST APIs & async programming
    • Firebase (Auth, Firestore, Cloud Functions, Push Notifications)
    • State management (Bloc / Riverpod / Provider)

  • Experience with clean architecture (MVVM, Clean Architecture, etc.)
  • Familiarity with CI/CD pipelines for mobile apps
  • Strong Git workflow experience
  • Ability to write clean, maintainable, and well-documented code





Nice to Have (Strong Plus)



  • Experience with native Android (Kotlin) or iOS (Swift)
  • Backend exposure (Node.js, Laravel, Django, or similar)
  • Experience working on large-scale or high-traffic apps
  • Knowledge of mobile security best practices
  • Previous experience in a product-focused or startup environment
  • Contributions to open-source Flutter projects




What We’re Looking For



  • Strong problem-solving and analytical thinking
  • Ownership mindset — you care about what you build
  • High engineering standards (not “just making it work”)
  • Ability to work independently in a remote environment
  • Clear communication and collaboration skills





What We Offer



  • Competitive compensation (based on experience)
  • Fully remote work environment
  • Opportunity to work on real, impactful products
  • High-ownership role with influence over technical decisions
  • Professional growth with a strong engineering team
  • Long-term collaboration opportunities




Interested in this role?

Apply Now

Frequently asked questions

What does a Senior Flutter Developer do at KoldaTech?

A Senior Flutter Developer at KoldaTech is responsible for designing, developing, and maintaining scalable cross-platform mobile applications using Flutter. The role includes architecture decisions, API integration, performance optimization, code reviews, and mentoring junior developers.

Is this a remote Flutter developer job?

Yes. This is a fully remote Senior Flutter Developer position, open to qualified candidates worldwide. You will collaborate with a distributed team across multiple time zones.

What experience is required for this Senior Flutter role?

Candidates should have: • 5+ years of professional software development experience • 3+ years of hands-on Flutter and Dart experience • Proven experience building and maintaining production mobile applications

Is this position full-time or contract?

KoldaTech offers both full-time and long-term contract opportunities for Senior Flutter Developers, depending on project needs and candidate availability.

What Flutter skills are required for this role?

Required Flutter skills include: • Dart programming language • Flutter widget lifecycle and rendering • State management (Bloc, Riverpod, Provider) • REST API and third-party SDK integration • Firebase services (Auth, Firestore, Push Notifications)

Do I need experience with native Android or iOS development?

Native Android (Kotlin) or iOS (Swift) experience is not mandatory, but it is a strong advantage. Candidates with hybrid or native mobile experience are highly valued.

What kind of projects will I work on?

You will work on real-world, production-grade mobile applications for startups and established businesses. Projects include MVPs, SaaS platforms, fintech apps, marketplaces, and high-traffic consumer applications.

Does KoldaTech follow clean architecture principles?

Yes. KoldaTech strongly emphasizes clean architecture, modular codebases, scalability, and maintainability. Senior developers are expected to contribute to architectural decisions.

Will I be involved in app store deployment?

Yes. Senior Flutter Developers are involved in App Store and Google Play deployment, versioning, maintenance, and post-release support.

Is mentoring part of the Senior Flutter Developer role?

Yes. Senior Flutter Developers are expected to mentor junior developers, participate in code reviews, and help maintain high engineering standards.

What tools and workflows does KoldaTech use?

KoldaTech uses: • Git-based version control • CI/CD pipelines for mobile apps • Agile development processes • Collaborative tools for remote teams Exact tools may vary by project.

What is the interview process like?

The hiring process typically includes: 1. CV and portfolio/GitHub review 2. Technical assessment or code review 3. Technical interview (Flutter & architecture focused) 4. Final discussion with leadership

What makes this Flutter developer job different?

Unlike freelance gigs or traditional agencies, KoldaTech focuses on: • Long-term product quality • Strong internal QA processes • High engineering discipline • Ownership and accountability

Is this role suitable for freelance Flutter developers?

Yes, if you are open to long-term collaboration and can commit to structured delivery timelines and quality standards.

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