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Senior Flutter Developer

At Lucida AI, we’re building the future of English learning — voice-first, AI-powered, and radically human. With our flagship product Speak English with Lucy, we help employees and learners across the world reach fluency through natural conversations, without ever needing to “press a button.”

We’re now looking for a Senior Flutter Developer to take a lead role in shaping the future of our mobile experiences. If you're passionate about performance, architecture, and building beautiful, scalable apps used by millions — this one’s for you.

Why Lucida AI?

  • Product with 10M+ downloads and users speaking 36 minutes/day on average.
  • Join a team backed by successful founders with a previous startup exits.
  • Work on a fast-growing product solving a real-world problem with AI and speech tech.
  • Remote-first team with flexibility and high ownership culture.
  • You’ll make an impact from day one — shaping not just the app, but the future of learning.

What You'll Be Doing

  • Lead the development of new features and core improvements on our Flutter app.
  • Collaborate closely with AI engineers, designers, and product leads to bring user-centric ideas to life.
  • Own app architecture and ensure long-term scalability and maintainability.
  • Identify bottlenecks, refactor legacy code, and optimize performance.
  • Contribute to code reviews, testing strategies, and technical decisions across the mobile team.
  • Stay up-to-date with mobile and Flutter trends to continuously evolve our tech stack.

What You'll Bring

  • BS/MS degree in Computer Science, Engineering, or a related field.
  • 4+ years of Flutter experience, building and shipping production apps at scale.
  • Deep understanding of Flutter SDK, architecture patterns (Bloc, Provider, GetX, Riverpod), and clean code principles.
  • Proven experience with mobile CI/CD pipelines, Firebase, in-app purchases, and analytics tools.
  • Strong debugging, profiling, and performance optimization skills.
  • Passion for beautiful UI/UX, animations, and seamless cross-platform experiences.
  • Excellent communication and mentoring skills — you’ll guide and support junior devs.
  • Bonus: Experience with real-time audio, WebRTC, or AI-integrated mobile apps.
  • Competitive salary
  • Full Health Benefits. To keep you away from all the trouble, we provide unlimited private health insurance and cover the HPV vaccine
  • A meal compensation that is actually enough for a decent & nutritious lunch, we're not following the industry standard
  • Never-ending growth opportunities supported by learning & development fund
  • Working environment where your success is not judged by a dress code or working hours
  • Freedom to test, fail and test again in a fast-paced environment
  • Beach days, happy hours, theme nights, sports & game events and any other social activity ideas you come up with

Let’s build the most human AI experience — together.

Apply now and let your code speak volumes. 🗣️📱✨

What You Should Know About Senior Flutter Developer, Lucida AI

At Lucida AI, we’re building the future of English learning — voice-first, AI-powered, and radically human. We're thrilled to announce an opening for a Senior Flutter Developer to take a leading role in our mission. If you're someone who thrives on crafting beautiful and scalable apps, this is a fantastic opportunity! As part of your exciting journey at Lucida AI, you’ll be instrumental in shaping our flagship product, Speak English with Lucy, which has already gained over 10 million downloads. You will collaborate with a diverse team of AI engineers, designers, and product leads to transform user-centric ideas into reality. This is not just a coding job; it's about making a real impact in the learning experience of users around the globe. Your days will include leading feature development, optimizing performance, and ensuring our app architecture is robust for the future. With 4+ years of Flutter experience under your belt, you’ll leverage your skills in building and shipping production apps while guiding junior developers along the way. Our remote-first culture grants you the freedom to work flexibly while being part of a supportive team that values your contributions from day one. Join us at Lucida AI, and let’s make learning a joyful and engaging journey together!

Frequently Asked Questions (FAQs) for Senior Flutter Developer Role at Lucida AI
What are the primary responsibilities of a Senior Flutter Developer at Lucida AI?

As a Senior Flutter Developer at Lucida AI, you will lead the development of new features for our mobile app, collaborate with various team members to bring user-centric ideas to life, own the app architecture for long-term scalability, and actively participate in code reviews and technical decision-making. Your role will be crucial in optimizing performance and ensuring the app meets the needs of our users.

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What qualifications are required for the Senior Flutter Developer position at Lucida AI?

The ideal candidate for the Senior Flutter Developer position at Lucida AI should have a BS/MS degree in Computer Science or a related field, along with over 4 years of Flutter experience in building production apps. A deep understanding of Flutter SDK, architecture patterns, and performance optimization skills is essential. Additional experience in mobile CI/CD pipelines and a passion for UI/UX design will be beneficial.

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What tools and technologies should a Senior Flutter Developer at Lucida AI be familiar with?

At Lucida AI, a Senior Flutter Developer should be well-versed in the Flutter SDK, various architecture patterns like Bloc and Provider, as well as mobile CI/CD pipelines. Familiarity with Firebase, in-app purchases, and analytics tools will help you excel in this role, along with strong debugging and profiling capabilities.

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What is the company culture like for a Senior Flutter Developer at Lucida AI?

The culture at Lucida AI is remote-first, offering flexibility and a high ownership environment. We foster a collaborative spirit where every team member’s input matters, no matter their role. The workspace emphasizes freedom, personal growth opportunities, and a supportive atmosphere, making it a great place for a Senior Flutter Developer to thrive.

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How does Lucida AI support the professional development of a Senior Flutter Developer?

Lucida AI is committed to your professional growth. As a Senior Flutter Developer, you'll have access to a learning and development fund to pursue courses, workshops, or conferences relevant to your interests. Additionally, the environment encourages mentorship, collaboration, and ongoing learning to ensure you can continuously develop your skills.

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Common Interview Questions for Senior Flutter Developer
What is your experience with Flutter and how have you used it in your previous projects?

In your answer, provide specific examples of applications you've developed using Flutter, explaining the features you implemented and the challenges you overcame. Highlight your role in the entire development lifecycle and your familiarity with state management and effective architecture patterns.

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How do you ensure the scalability of a mobile application?

You should discuss the importance of modular code, design patterns, and performance optimization techniques. Also, explain how you approach app architecture decisions and the tools you use to monitor performance and scalability needs over time.

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Can you describe a challenging bug you encountered and how you resolved it?

Provide a specific example that illustrates your thought process and debugging skills. Detail the steps you took to identify the issue, the resolution, and what you learned from the experience. This shows your analytical ability and persistence.

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How do you stay updated with the latest trends in Flutter development?

Discuss how you utilize resources such as online forums, communities, newsletters, or conferences to keep abreast of new developments in the Flutter ecosystem. Mention any specific influencers or thought leaders in the industry that you follow.

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What techniques do you use for optimizing app performance?

Talk about strategies such as code splitting, lazy loading, or using native modules. Include examples of tools you’ve used for profiling apps and any specific case studies where you improved performance.

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How would you approach collaborating with designers and AI engineers on mobile features?

Emphasize your communication skills and collaborative approach. Discuss how you would hold cross-functional meetings, share ideas, and iterate based on feedback from designers and AI engineers to create user-centric features.

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What is your process for conducting code reviews?

Highlight the importance of code reviews in maintaining code quality. Explain how you provide constructive feedback, focus on best practices, and help less experienced developers learn through the review process.

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Describe a time you mentored a junior developer.

Share a specific instance where you took the time to mentor a less experienced developer. Discuss the guidance you provided, the impact it had on their development, and how it contributed to the team's overall success.

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What resources or tools do you utilize for managing CI/CD pipelines in mobile development?

Talk about specific tools you’ve used like Jenkins, GitHub Actions, or CircleCI. Discuss how you set up and monitored these pipelines and the benefits they provided for your development process.

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What is your philosophy on balancing UI/UX with functionality in app development?

Here, you can elaborate on your belief that while functionality is essential, UI/UX plays a crucial role in user satisfaction. Give an example of how you've achieved balance in a past project, focusing on collaboration and user feedback.

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EMPLOYMENT TYPE
Full-time, remote
DATE POSTED
April 18, 2025

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