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Senior Mobile Developer (Flutter & Android Kotlin/Java)

CÔNG TY TNHH GALAXY DIGITAL HOLDINGS

Galaxy Innovation Hub - D1 Road, Hi-Tech Park, District 9, HCMC.

Posted date: 01-12-2025

  • Experience

    4 - 6 Years

  • Job level

    Experienced (Non - Manager)

  • Salary

    Competitive

Job Description

We are looking for a highly skilled Senior Mobile Developer with strong expertise in Flutter and Native Android (Kotlin/Java). You will play a key role in developing high-quality, scalable mobile applications, implementing engineering best practices, and contributing to the technical direction of the product.

  • Analyze project requirements and collaborate with PM and stakeholders to provide accurate effort and timeline estimations.
  • Design, develop, and maintain mobile applications using Flutter and Kotlin/Java.
  • Write clean, maintainable, and testable code following industry best practices.
  • Perform unit testing and participate in code reviews to ensure high engineering quality.
  • Troubleshoot, diagnose, and resolve technical issues; continuously improve performance, stability, and reliability.
  • Work effectively with cross-functional teams (Backend, QA, Product) to ensure successful delivery.
  • Provide technical mentorship and guidance to junior/mid-level developers.
  • Take ownershipofassigned tasks, monitor progress, and ensure timely delivery.
  • Contribute to establishing and maintaining development workflows: branching strategy, codereview standards, testing practices, CI/CD pipelines.
  • Support the publishing, updating, and maintenance of apps on the Apple App Store and Google Play Store.

Job Requirement

Technical Skills

  • 4+ years of hands-on experience developing Android applications using Kotlin/Java.
  • 3+ years of professional experience in Flutter and Dart.
  • Strong understanding of OOP,software architecture, design patterns, data structures, and algorithms.
  • Proven experience delivering production-grade mobile applications.
  • Strong proficiency with Android development tools (Android Studio, Gradle, debugging tools).
  • Solid knowledge of RESTful APIs andintegrating third-party SDKs/APIs.
  • Practical experience with Flutter state management (Bloc, Provider, Riverpod, or similar).
  • Strong analytical, debugging, and problem-solving capabilities.
  • Experience optimizing mobile apps for performance, memory usage,battery efficiency, and smooth UI/UX.

Soft Skills

  • Strong communication and teamwork skills.
  • Ability to work independently with high accountability and ownership.
  •  Ability to contribute effectively to workload estimation and planning discussions.

Preferred Qualifications (What Will Make You Stand Out)

  • Prior experience as a Team Lead or Technical Lead in mobile development. 
  • Hands-onexperience managingthefull apprelease cycle, including handling App Store / Play Store review feedback and ensuring compliance.
  • Ability to manage and upgrade third-party SDKs, libraries, and dependencies to support OS updates and maintain compatibility.
  • Experience working with large-scale apps that integrate multiple partner SDKs (payment, loyalty, tracking, analytics, referral ).
  • Strong self-management skills: ability to plan, prioritize, proactively report progress, and consistently meet deadlines.
  • High accuracy in effort estimation and strong ownership of delivery commitments.
  • A solid product mindset:ability to understand product goals, safeguard application quality, andchallenge non-aligned requirements.
  • Domain experience in:  

+ Fintech / Financial services.

+ Loyalty, membership, orrewardssystems.

+ Apps that require heavy SDK integrations, engagement tracking,or analytics.

+ User growth,engagement,orretention-focused products.

  • Experience with AI tools or AI Agents toenhancedevelopmentproductivity, automation, or analysis.
  • Strong sense of ownership, long-term thinking, and dedication to delivering a stable, high quality user experience.

More Information

  • Degree: Bachelor
  • Age: Unlimited
  • Working time: Permanent

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CÔNG TY TNHH GALAXY DIGITAL HOLDINGS

  • Quy mô: 100-499 nhân viên

  • Lĩnh vực: Phần Mềm CNTT/Dịch vụ Phần mềm

  • Địa chỉ: Galaxy Innovation Hub, Road D1, Hi-Tech Park, District 9, HCMC.

Galaxy Holdings, a tech sector leader, is dedicated to shaping the future of the Digital Age. We offer a comprehensive benefits package, healthcare, Galaxy Elite perks, and vibrant cultural activities. As part of Sovico Group, we provide cutting-edge technology products and services to enhance lives and drive digital innovation. We deliver reliable solutions for corporate partners and personalized digital experiences for consumers. Committed to societal growth, we connect nations through technology, support our staff with integrity, and strive to build a prosperous Vietnam in the digital era. Our core values include being Human-Centric, Data-Driven, Transparent, Agile, and Ownership.

Our subsidiary company:

Galaxy One - https://galaxy.one/

Galaxy Joy - https://skyjoy.vietjetair.com/galaxyjoy/

Galaxy Telecom - https://skyfi.vn/buy-esim/nations/

Galaxy Connect - https://galaxyholdings.co/vi/subsidiaries/galaxy-connect/

Galaxy Pay - https://galaxyholdings.co/vi/subsidiaries/galaxy-pay/

Galaxyt Technology Services - https://www.galaxytechnology.vn/

FinOS - https://www.linkedin.com/company/finosvietnam/?originalSubdomain=vn

* Working place: Galaxy Innovation Hub, Road D1, Hi-Tech Park, District 9, HCMC.

* Working time: 44 hours/week from Monday to Friday

Galaxy Innovation Hub - D1 Road, Hi-Tech Park, District 9, HCMC.

https://galaxyholdings.co/

Company size: 100-499

Contact person: Phòng Tuyển dụng Nhân tài

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