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Principal App Engineer - Contract
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The Intersect Group
Sandy Springs, GA (In Person)
Full-Time
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Job Description
We're looking for a Principal Mobile App Engineer to lead the design, development, and evolution of high-performing mobile applications built with React Native. This is a hands-on leadership role ideal for someone who thrives in a fast-paced environment, enjoys solving complex problems, and can bridge the gap between business goals and technical execution. What You'll Do Lead the architecture and development of scalable, high-performance mobile apps using React Native and modern React frameworks Act as the subject matter expert (SME) for all mobile app development initiatives Partner with product, design, and engineering leaders to deliver impactful features that drive user engagement and conversion Translate business needs into elegant, well-architected technical solutions Guide teams in building maintainable, reusable, and performant codebases Support production releases, troubleshoot issues, and ensure application stability Drive adoption of best practices in CI/CD, testing, and deployment strategies Collaborate on long-term architecture and technology roadmap planning Evaluate new tools, frameworks, and trends to keep the platform modern and competitive Lead experimentation and feature innovation to continuously improve user experience What You Bring Deep expertise in React Native and React-based ecosystems Strong experience building and scaling mobile applications with high performance and reliability Proficiency with JavaScript/TypeScript, Node.js, and modern frameworks (e.g., Next.js) Experience consuming REST APIs and GraphQL services Familiarity with cloud environments and modern application architectures (e.g., JAMstack) Advanced knowledge of CI/CD pipelines, version control (Git), and agile tools (Jira, Confluence) Experience implementing: Design systems and component libraries Feature flagging and experimentation frameworks Mobile integrations such as payments (Apple Pay, Google Pay, PayPal) and social logins Strong understanding of application security, performance optimization, and debugging Experience working in fast-paced, agile environments Leadership & Collaboration Excellent communicator with the ability to explain complex technical concepts to non-technical stakeholders Proven ability to mentor engineers and guide development efforts across teams Strong problem-solving mindset with a focus on delivering business value Comfortable using modern developer tooling, including AI-assisted coding tools (e.g., GitHub Copilot) Qualifications 10+ years of overall software engineering experience 5+ years of hands-on experience building applications with React Native Bachelor's degree in Computer Science, Information Systems, or related field (Master's preferred) Nice to Have Experience with CMS platforms (e.g., Sitecore) Experience in high-traffic consumer applications or digital platforms Background in experimentation, A/B testing, and analytics-driven development Why Join You'll have the opportunity to shape the future of mobile experiences, influence architecture at scale, and work on products used by a large and growing user base—all while collaborating with a forward-thinking, innovation-driven team.