Software Development Engineer III - Content Hub (Mobile Flutter)

About HighLevel

HighLevel is an AI-powered business operating system that gives agencies, entrepreneurs and SMBs the infrastructure to build, automate and scale. Today, HighLevel supports SMBs across 150+ countries, fueling community-driven growth rooted in real customer outcomes.

To date, businesses operating on HighLevel have generated over $7 billion in ecosystem value, demonstrating the impact of shared infrastructure at scale. By centralizing conversations, automation and intelligence into one system, we help businesses move faster, reduce complexity and execute efficiently.

Behind the platform, HighLevel powers more than 4 billion API hits and 2.5 billion message events daily. With 250 terabytes of distributed data, 250+ microservices and over 1 million domain names supported, our architecture is built for performance, resilience and long-term scalability.

Our People

With over 2,000 team members across 10+ countries, HighLevel operates as a global, remote-first organization built for speed and ownership. We value initiative, clarity and execution, creating space for ambitious people to build systems that support millions of businesses worldwide. Here, innovation thrives, ideas are celebrated and people come first, no matter where they call home.

Our Impact

Every month, HighLevel enables more than 1.5 billion messages, 200 million leads and 20 million conversations for the more than 1 million businesses we support. Behind those numbers are real people building independence, expanding opportunity and creating measurable impact. We’re proud to be a part of that.

Learn more about us on our YouTube Channel or Blog Posts

About the Role

We’re looking for a Software Engineer with 3+ years of experience to join our Client Portal Mobile Team, which enables creators and businesses to deliver rich, branded experiences through our mobile app. The Content Hub connects millions of users across courses, communities, bookings, and payments-helping creators manage their entire business in one seamless platform.

As a Mobile Engineer, you’ll focus on developing new features, optimising performance, and enhancing the overall reliability of the Mobile App to strengthen its reputation among users. You’ll work closely with product, design, and backend teams to improve app stability, deliver delightful user experiences, and build features that scale across thousands of businesses and millions of users. This role is ideal for engineers passionate about mobile excellence and performance-driven product development.

Responsibilities

• Contribute to the design and development of high-performance, scalable mobile software, ensuring long-term stability and maintainability.
• Build and ship production-grade Flutter features used daily by millions of users across diverse industries and use cases.
• Collaborate with product, design, and backend teams to deliver end-to-end, customer-facing features that improve the app’s performance, usability, and reputation.
• Develop and maintain shared tooling, frameworks, and libraries that streamline mobile development and improve developer velocity.
• Measure and improve app performance, responsiveness, and reliability through modern observability, profiling, and debugging practices.
• Write clean, testable, and maintainable code, leveraging AI-assisted tools to accelerate development and testing while maintaining code quality.
• Stay current with Flutter best practices, mobile architecture patterns, and performance optimisation techniques to continuously improve user experience.
• Stay on the bleeding edge of AI/LLM advances, Flutter best practices, and scalable mobile architecture patterns - and share insights with the team.

Requirements

• 4+ years of professional experience in software engineering, including 2+ years of Flutter and Dart in production environments.
• Strong understanding of mobile app architecture, widget lifecycle, rendering, and advanced state management techniques (e.g., Provider, Bloc, Riverpod, MobX).
• Experience integrating and optimizing RESTful APIs and managing app communication with scalable backend systems.
• Proven ability to identify and fix performance bottlenecks, memory issues, and frame drops across iOS and Android.
• Hands-on experience with CI/CD pipelines, build automation, and testing frameworks for mobile applications.
• Familiarity with cross-platform optimisations, native integrations (iOS/Android), and reducing app size.
• Strong fundamentals in debugging, profiling, and improving core app metrics such as startup time, crash rate, and responsiveness.
• Effective collaboration and communication skills - able to work closely with cross-functional teams in a distributed environment.
• Passion for building polished, performant, and reliable mobile experiences that delight users at scale.