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Full-Stack React Native or Flutter Developer


About the client

Our client is an innovative start-up building a next-generation breathwork & wellness app.

Their goal is to mix cutting-edge technology with breathwork, creating a seamless and intuitive platform that helps users improve their mental health, manage stress, and boost their overall well-being.

As a forward-thinking company, they are looking for a passionate, experienced tech enthusiast who can help us develop and scale our app using AI and LLMs to create engaging and personalised breathwork experiences.

About the project

Our client is seeking a highly motivated, self-driven App Developer with passion & experience for AI to join their team.

You will play a critical role in building a state-of-the-art app that leverages AI to offer personalised breathwork practices.

Your responsibilities will include app development for both iOS and Android platforms, integrating AI-driven features, optimising user experience, and ensuring the app is scalable, secure, and intuitive. This is a great opportunity for someone who is eager to push the boundaries of wellness tech and innovate with AI.

Responsibilities

  • App Development: Build and maintain a seamless, user-friendly mobile app for iOS and Android platforms (using React Native, or Flutter).
  • AI Integration: Implement AI-driven features, including natural language processing (NLP) for breathwork guides, voice-based instructions, and personalised feedback using Large Language Models (LLMs) (such as OpenAI GPT).
  • Backend Development: Develop and scale the backend infrastructure using modern technologies like Node.js, Python, Django, and cloud services (AWS, Google Cloud).
  • Data Analytics & Personalisation: Integrate data from wearables (e.g., Fitbit, Apple Watch) and in-app tracking to build personalised recommendations for users based on mood, health data, and progress.
  • Optimisation & Testing: Ensure the app is highly performant, secure, and responsive. Optimise for speed, usability, and scalability. Conduct thorough testing to ensure a bug-free, smooth user experience.
  • Collaboration & Innovation: Work closely with cross-functional teams, including a UX/UI designer, wellness experts, and product managers, to deliver the best user experience. Contribute to brainstorming sessions and offer innovative solutions for integrating AI in wellness products.

Requirements

  • Mobile App Development: At least 2 years of experience building and deploying mobile apps (preferably in iOS and/or Android) using React Native, or Flutter.
  • AI/ML Experience: At least 1-2 years of hands-on experience with Large Language Models (LLMs) (OpenAI GPT, Hugging Face, etc.), Natural Language Processing (NLP), and/or machine learning frameworks such as TensorFlow or PyTorch.
  • Backend Development: Strong experience with backend development using Node.js, Python, Django, or similar technologies. Proficiency in working with RESTful APIs and third-party integrations.
  • Data Science & Analytics: Experience using data analytics to build personalised recommendation systems, integrating data from wearables and user input for dynamic, AI-driven features.
  • Cloud Infrastructure: Experience working with cloud platforms such as AWS, Google Cloud, or Azure for deploying and maintaining scalable infrastructure.
  • Version Control: Strong familiarity with Git for version control and collaborative development.
  • Wellness Focus: A strong interest or personal experience in breathwork, mindfulness, yoga, or other wellness practices. Understanding of how to build apps that cater to personal development and mental health.
  • User-Centered Design: Experience building mobile apps that prioritise UX/UI and user engagement. Knowledge of accessibility best practices and ability to create apps that are easy to use and aesthetically pleasing.
  • Personalisation with AI: Experience using AI/ML to create highly personalized user experiences based on data inputs, preferences, and real-time feedback.
  • Communication & Collaboration: Excellent communication skills with the ability to explain complex AI concepts to non-technical team members and collaborate effectively with cross-disciplinary teams.

As a plus

  • Experience integrating voice-based AI solutions, such as voice assistants or speech recognition for guided breathwork exercises.
  • Familiarity with wellness-related IoT devices or APIs (e.g., Fitbit, Garmin, Apple HealthKit).
  • Experience in developing AI chatbots or conversational AI systems.

We offer

  • Competitive salary and benefits package.
  • Flexible working hours to maintain work-life balance.
  • 20 working days of annual vacation + paid state holidays.
  • Paid sick leave.
  • Personal laptop with all necessary software.
  • Support services: Corporate accountant, lawyer, and psychologist.
  • Professional growth: 50% compensation for workshops and professional conferences.
  • English classes (50% compensation).
  • Transparent and bureaucracy-free management.

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    Job details

    Full-Stack React Native or Flutter Developer

    Kyiv, Remote, Warsaw

    Upper-Intermediate



    Location

    Kyiv, Remote, Warsaw

    Job type

    Full time

    English level

    Upper-Intermediate

    Date posted

    Mar 27, 2025