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Senior Mobile Engineer

Workstream

Chengdu, CN or Wuhan, CN or Shanghai, CN (Workstream - Shanghai ) Remote permanent

Posted: November 11, 2025

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Job Description

Workstream is a mission-driven company building the all-in-one HR, payroll, and hiring platform for managing the hourly workforce. There are 2.7 billion hourly workers, making up 80% of the global workforce, but this market has been heavily underserved by technology and deserves better. Workstream has been purpose-built for the hourly workforce from day one so that these businesses and their employees can thrive.

Our customers include leading brands from multiple sectors, including Burger King, Carl's Jr./Hardee's, IHOP, KFC, and Culvers. We are a high growth series B company and quickly expanding our product portfolio to deliver on our vision. We are backed by legendary VCs and industry experts like Founders Fund, BOND, and Coatue.

Our engineering team is composed of passionate, driven, and talented engineers who focus on building and innovating cloud technology solutions that empower local businesses to thrive and better serve the deskless workforce in their communities. We are seeking a talented Senior Flutter Engineer to join our growing engineering team.

About the Role

Focused on building and maintaining the underlying infrastructure needed to support Mobile app development, including setting up CI/CD pipelines, implementing high-quality and scalable mobile app solutions, and contributing to the development of best practices and standards across the engineering team, while also possessing strong Flutter/iOS/Android development skills to contribute to the application codebase directly.

If you have solid background in iOS, Android or Frontend, and interested to learn flutter, you are welcome to apply! We have strong tech leaders who are expertise in flutter and used to work on products with 100 million MAU, and could help you learn edgy flutter technologies and thrive.

Key Roles & Responsibilities:

• Design and implement mobile infrastructure solutions, ensuring high performance, scalability, and maintainability of mobile applications

• Build a suite of tools, frameworks, and libraries that improve the performance and efficiency of the mobile development team

• Develop solutions for automated testing, CI/CD pipelines, and performance/issue monitoring for mobile applications.

• Troubleshoot technical issues/obstacles and provide timely support to the development teams

• Work closely with product and design teams to align on key technical decisions and ensure the smooth delivery of features.

• Provide technical guidance, best practices for feature teams or junior team members

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

Required Skills:

• Strong Flutter Development Expertise: Proficient in Dart programming language, Flutter app framework, and understanding of Flutter best practices.

• Knowledge on Mobile development of Flutter/iOS/Android, familiar with at least one object-oriented programming languages like Swift, Objective C, Java/Kotlin, C++

• Excellent knowledge of mobile-specific architecture, design patterns, frameworks, and libraries (e.g., Provider, Riverpod, MVVM, Clean Architecture etc.).

• Proficient in debugging, profiling, and optimizing mobile apps for performance with tools like Flutter DevTools, Android Profiler, Instruments etc.

• Strong communication skills with the ability to explain complex technical concepts to non-technical stakeholders.

• Attitude and Approach

• A proactive approach to work, the ability to handle multiple tasks, and to maintain a high-quality standard when working under time pressure.

• Growth mindset, and excited to learn and not scared of asking questions.

• Self-motivated and a great team player.

• An active member of our sprint process

What We Offer:

• A mission-driven and value-based company dedicated to empowering deskless workers and local businesses

• An early employee opportunity at a Series B startup; work with the founding team and industry veterans to accelerate your career

• Competitive salary and equity

• Unlimited PTO

• Hybrid Office/WFH schedule

Know More About Workstream

• https://www.workstream.us/blog/funding-series-b

• https://techcrunch.com/2021/08/26/workstreams-text-based-recruitment-tool-gets-a-48m-bet-from-bond-and-beyond/

• https://techbuzz.news/buzzworthy-august-27-2021/

Additional Information

Workstream provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.

We are committed to the full inclusion of all qualified individuals.

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