Senior React Native Developer

Who we are! Speer Technologies is a dynamic technology hub based in Toronto, partnered with some of the largest technology incubators in the Greater Toronto Area. We are a team of passionate innovators and open-minded thinkers, dedicated to building groundbreaking technologies. Our products are on the path to receiving provisional patents, with partnerships spanning Italy, Germany, California, and France. As a startup, we thrive on creativity, collaboration, and the drive to push boundaries. Our fast-paced environment offers exposure to a variety of programming languages, software, and work environments, ensuring a rich learning experience. We provide ample opportunities for personal and professional growth, all while fostering an inclusive and barrier-free workplace. Speer is an equal opportunity employer and is committed to providing an inclusive and barrier-free recruitment process. We will accommodate the needs of applicants under the Ontario Human Rights Code and the Accessibility for Ontarians with Disabilities Act (AODA) throughout all stages of the recruitment and selection process. Please advise Speer of any accommodations you may require to ensure your equal participation in the recruitment and selection process. Information received relating to accommodation measures will be addressed confidentially. Why Speer Technologies? Growth Opportunities: We offer the chance to grow with the company and take on new responsibilities as we expand. Dynamic Environment: Our fast-paced startup environment ensures no two days are the same. Innovation: Be part of a team that's pushing the boundaries of technology and making a real impact. Inclusive Workplace: We are committed to creating an inclusive environment where all employees can thrive. What You’ll Do As a Senior React Native Developer, you will lead the development of cross-platform mobile applications, including integration with external devices and hardware systems. Build and maintain cross-platform mobile apps using React Native Design reusable components and scalable mobile architecture Integrate mobile apps with backend APIs and third-party services Collaborate with designers, product teams, and hardware engineers Optimize performance across iOS and Android platforms Support integration with hardware peripherals such as Bluetooth devices and other connected technologies Improve build processes and mobile CI/CD pipelines Conduct code reviews and support junior developers Ensure high-quality code through testing and best practices Responsibilities Own React Native application architecture and development standards Deliver performant and maintainable cross-platform solutions Collaborate with backend and hardware teams to define integration requirements Troubleshoot and resolve production issues across mobile platforms Contribute to product planning and technical discussions . Skills Required 3+ years of professional software development experience 3+ years working with React Native in production environments Strong JavaScript/TypeScript experience Experience integrating REST APIs and authentication systems (OAuth/JWT) Understanding of native mobile concepts (iOS/Android) Experience with hardware and peripheral integration, including Bluetooth devices and other connected technologies Experience with Git, Agile workflows, and CI/CD pipelines Experience publishing to App Store and Google Play Preferred Skills Experience with Jest, Detox, or similar testing tools Familiarity with Fastlane or mobile CI/CD tools Exposure to Node.js and full stack development Experience with cloud services (AWS, GCP) Understanding of mobile performance optimization and accessibility Ideally you will also have: An Agile mindset with experience working in dynamic product teams. A spirit of collaboration and transparent communication. A passion for elegant UX and well-architected systems. High personal development standards, including documentation, testing, and clean code. A willingness to grow across the stack — from mobile interfaces to backend APIs. Team spirit and a sense of humour is always great! Fluency in French is an asset. Job Details: Job Type: Full-Time Pay: $70,000–$100,000 a year Flexible Language Requirement: French not required (asset) Schedule: Monday to Friday Benefits: Dental care Paid time off Vision care Wellness program