Senior Full-Stack Engineer (React Native + AI)
Senior Full-Stack Engineer (React Native + AI)
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Job Description
Join our team as a Full-Stack Developer and help shape the future of AI-powered language learning!
Youll be part of a product team building an innovative mobile app that leverages advanced AI technologies to help users master new languages. Your role will be full-stack covering both frontend (React Native) and backend ( development. Youll work on integrating cutting-edge AI tools optimizing performance and creating an engaging intelligent user experience.
REQUIREMENTS
Were looking for a Full-Stack Developer who has:
5 years of experience in full-stack development with a strong focus on React Native;
Proficiency in TypeScript and backend development with or Express;
Experience building and maintaining PostgreSQL databases;
Hands-on experience integrating AI functionality using OpenAI SDK Gemini SDK or Eleven Labs SDK;
Experience working with Supabase;
Familiarity with Expo Go for mobile app development;
Strong understanding of SaaS tools and how to integrate them into modern JavaScript frameworks;
Knowledge of scripting languages such as Bash Python or PowerShell for automating tasks;
Experience using collaborative tools like Replit and Cursor;
Upper-intermediate English level (written and spoken).
Nice to have:
Previous experience building AI-powered or edtech mobile apps.
RESPONSIBILITIES
As a Full-Stack Developer you will:
Develop and optimize features for an AI-powered mobile language learning app (iOS & Android) using React Native;
Build and maintain APIs and backend logic using AI-driven features using tools like OpenAI SDK Gemini SDK and Eleven Labs SDK;
Manage and scale PostgreSQL databases for performance and data integrity;
Collaborate with designers product owners and other developers to define and implement new features;
Automate routine processes to improve team efficiency using scripting tools;
Ensure the app runs smoothly and efficiently continuously improving performance and code quality;
Take ownership of your work driving improvements and delivering results in a fast-paced environment.
ABOUT PROJECT
Description
Were building an AI-powered mobile application that helps users learn languages through interactive smart and adaptive experiences. The app combines speech listening and text-based learning powered by the latest language models and AI tools to personalize the learning process for each user.
WHAT WILL YOU GET WITH KINDGEEK
We want you to thrive and feel supported:
Professional growth
We support your development with training and certification refunds regular feedback and technical reviews.
Benefits package
Includes 18 working days of fully paid vacation 10 compensated by 50% sick leaves (without a doctors note) and study leaves. Long-term employees receive extended health insurance packages from our partners.
Personal growth
Access corporate English classes with 50% reimbursement an offline library internal/external training opportunities and certifications relevant to your role.
Geek community
Stay connected through online/offline clubs (e.g. English stretching skiing) volunteer initiatives and community events even during challenging times.
Flexibility
Enjoy a hybrid work model work remotely from the office or our Kindgeek London Hub in Lviv (pet-friendly too!).
We encourage you to apply
At Kindgeek we welcome applicants of all backgrounds regardless of nationality race gender marital status disability sexual identity or religion. We proudly support mobilised employees and veterans in continuing their careers and believe in providing equal opportunities for all.
Required Experience:
Senior IC
Employment Type
Full-Time
