Senior React Developer

About Us At UpScale, we combine experienced professionals and modern technology to create real business value. We develop AI-powered products and solutions that solve complex business challenges. We are looking for a Senior React Developer to join our AI-focused product development team. You will work on production-level AI applications, contribute to frontend architecture and technical decisions, and help shape our React development standards. If you enjoy taking ownership, solving complex technical challenges, and working with modern technologies, we’d be happy to welcome you to our team! As a Senior React Developer, you will: Develop and maintain React + TypeScript applications Migrate existing Flutter-based AI applications to React Develop new features for AI-powered products Contribute to frontend architecture and technical decisions Design scalable state management solutions using Redux Toolkit or modern alternatives Integrate REST APIs and WebSocket communication Work with AI, audio, and multimedia technologies Improve application performance and frontend quality Develop and maintain automated frontend tests Contribute to CI/CD, code quality and development standards Take ownership of technical solutions and continuous improvement Support and mentor less experienced developers Collaborate with Backend, QA, Product, Data Science, and Architecture teams You have: 5+ years of professional software development experience Strong hands-on React experience in production environments Strong TypeScript knowledge Experience with Redux / Redux Toolkit or similar solutions Solid frontend architecture and REST API experience Experience with automated frontend testing Familiarity with CI/CD, Git and modern development workflows Experience with React performance optimization Experience with WebSocket or other real-time technologies Strong problem-solving, communication, and collaboration skills An ownership mindset and interest in technical leadership It is a plus if you have: Experience with AI-powered applications AI, voice, audio, or multimedia integration experience VAD (Voice Activity Detection) experience Flutter → React migration experience Enterprise-scale application experience AWS, Azure, or GCP experience Tech Lead experience Why join us? Real technical ownership and influence on frontend architecture Work on modern AI-driven products Modern technologies including React, TypeScript, AI and cloud Professional growth and continuous learning Supportive, collaborative, knowledge-sharing team culture Stable, growing company with an innovative mindset Opportunities to work on both internal products and customer-facing solutions We are looking for a candidate who shares our values and is excited about the opportunity to make a difference in the financial industry. If this sounds like you, we would love to hear from you! By applying for this position, you automatically agree to the privacy policy: Legal document