{"schemaVersion":"jobsearcher.job.v1","id":"1316d73352b8e10e63b3d330","url":"https://jobsearcher.com/jobs/1316d73352b8e10e63b3d330","canonicalUrl":"https://jobsearcher.com/jobs/1316d73352b8e10e63b3d330","title":"Senior React & React Native Developer","description":"Title: Senior React & React Native DeveloperHybrid -- Jacksonville, FLDuration: Long TermPosition SummaryWe are seeking an experienced Senior React & React Native Developer to analyze, design, develop, and maintain business applications that support organizational needs. This role will focus on building and delivering modern web and mobile applications, improving existing systems, and implementing secure, scalable solutions.\r\nWorking under general supervision, the developer will leverage established procedures, industry knowledge, and technical expertise to address moderately complex business and technical challenges. The role also involves supporting existing applications, improving system performance, and collaborating with internal and external partners to ensure successful software delivery.\r\nKey ResponsibilitiesAnalyze business information systems, applications, and tools to identify opportunities for improvement and implement solutions that meet organizational requirements.\r\nAssess business needs, technical feasibility, system performance, and potential risks to optimize application value and functionality.\r\nDesign, develop, code, test, and maintain new and existing web and mobile applications.\r\nBuild and deliver modern applications using React and React Native.\r\nTroubleshoot, stabilize, and enhance existing applications, including projects with limited documentation or knowledge transfer.\r\nDevelop and maintain native mobile capabilities using Swift and/or Kotlin to support React Native modules and platform integrations.\r\nIntegrate applications with REST/JSON APIs and implement secure authentication and authorization workflows.\r\nDevelop conversational and chat-based user interfaces, including LLM-integrated experiences and streaming responses.\r\nImplement internationalization (i18n) and localization to support diverse users and markets.\r\nCoordinate software installations, provide ongoing technical support, and ensure application reliability.\r\nConduct code and configuration audits to evaluate accuracy, security, and performance.\r\nRecommend and implement improvements to application design, system performance, productivity, and end-user experience.\r\nDevelop and maintain technical documentation, including software user guides, maintenance procedures, and development best practices.\r\nIdentify opportunities for process optimization and recommend improvements to policies, procedures, and system functionality.\r\nCollaborate with internal and external stakeholders to resolve application and business system issues.\r\nMay provide indirect technical leadership to less experienced developers on smaller projects or components of larger initiatives.\r\nRequired Qualifications & Experience10 years of professional software development experience.\r\nStrong experience developing modern web applications using React.\r\nStrong experience developing mobile applications using React Native.\r\nRecent, hands-on experience building and delivering both web and mobile applications.\r\nNative mobile development experience with Swift and/or Kotlin, including React Native module development and platform integrations.\r\nExperience publishing applications to both the Apple App Store and Google Play Store.\r\nStrong understanding of OAuth 2.0 and OpenID Connect (OIDC).\r\nExperience implementing secure token storage and mobile application security hardening.\r\nStrong experience integrating REST APIs and working with JSON.\r\nExperience implementing internationalization (i18n) and localization.\r\nExperience building conversational or chat-based user interfaces, including LLM-integrated features and streaming responses.\r\nAbility to take ownership of existing applications, troubleshoot issues, and improve stability with limited knowledge transfer.\r\nTechnical SkillsFrontend: React, modern JavaScript/TypeScript\r\nMobile: React Native, Swift and/or Kotlin\r\nAPIs & Integration: REST, JSON\r\nAuthentication & Security: OAuth 2.0, OIDC, secure token storage, mobile application hardening\r\nAI & Conversational UI: LLM integrations, chat interfaces, streaming responses\r\nApplication Delivery: Apple App Store and Google Play Store publishing\r\nInternationalization: i18n and localization#J-18808-Ljbffr","company":"Keylent","rawCompany":"keylent","city":"Jacksonville","state":"FL","isRemote":false,"isActive":false,"createdAt":"2026-10-08T01:28:47.645Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Senior React & React Native Developer","description":"Title: Senior React & React Native DeveloperHybrid -- Jacksonville, FLDuration: Long TermPosition SummaryWe are seeking an experienced Senior React & React Native Developer to analyze, design, develop, and maintain business applications that support organizational needs. This role will focus on building and delivering modern web and mobile applications, improving existing systems, and implementing secure, scalable solutions.\r\nWorking under general supervision, the developer will leverage established procedures, industry knowledge, and technical expertise to address moderately complex business and technical challenges. The role also involves supporting existing applications, improving system performance, and collaborating with internal and external partners to ensure successful software delivery.\r\nKey ResponsibilitiesAnalyze business information systems, applications, and tools to identify opportunities for improvement and implement solutions that meet organizational requirements.\r\nAssess business needs, technical feasibility, system performance, and potential risks to optimize application value and functionality.\r\nDesign, develop, code, test, and maintain new and existing web and mobile applications.\r\nBuild and deliver modern applications using React and React Native.\r\nTroubleshoot, stabilize, and enhance existing applications, including projects with limited documentation or knowledge transfer.\r\nDevelop and maintain native mobile capabilities using Swift and/or Kotlin to support React Native modules and platform integrations.\r\nIntegrate applications with REST/JSON APIs and implement secure authentication and authorization workflows.\r\nDevelop conversational and chat-based user interfaces, including LLM-integrated experiences and streaming responses.\r\nImplement internationalization (i18n) and localization to support diverse users and markets.\r\nCoordinate software installations, provide ongoing technical support, and ensure application reliability.\r\nConduct code and configuration audits to evaluate accuracy, security, and performance.\r\nRecommend and implement improvements to application design, system performance, productivity, and end-user experience.\r\nDevelop and maintain technical documentation, including software user guides, maintenance procedures, and development best practices.\r\nIdentify opportunities for process optimization and recommend improvements to policies, procedures, and system functionality.\r\nCollaborate with internal and external stakeholders to resolve application and business system issues.\r\nMay provide indirect technical leadership to less experienced developers on smaller projects or components of larger initiatives.\r\nRequired Qualifications & Experience10 years of professional software development experience.\r\nStrong experience developing modern web applications using React.\r\nStrong experience developing mobile applications using React Native.\r\nRecent, hands-on experience building and delivering both web and mobile applications.\r\nNative mobile development experience with Swift and/or Kotlin, including React Native module development and platform integrations.\r\nExperience publishing applications to both the Apple App Store and Google Play Store.\r\nStrong understanding of OAuth 2.0 and OpenID Connect (OIDC).\r\nExperience implementing secure token storage and mobile application security hardening.\r\nStrong experience integrating REST APIs and working with JSON.\r\nExperience implementing internationalization (i18n) and localization.\r\nExperience building conversational or chat-based user interfaces, including LLM-integrated features and streaming responses.\r\nAbility to take ownership of existing applications, troubleshoot issues, and improve stability with limited knowledge transfer.\r\nTechnical SkillsFrontend: React, modern JavaScript/TypeScript\r\nMobile: React Native, Swift and/or Kotlin\r\nAPIs & Integration: REST, JSON\r\nAuthentication & Security: OAuth 2.0, OIDC, secure token storage, mobile application hardening\r\nAI & Conversational UI: LLM integrations, chat interfaces, streaming responses\r\nApplication Delivery: Apple App Store and Google Play Store publishing\r\nInternationalization: i18n and localization#J-18808-Ljbffr","datePosted":"2026-10-08T01:28:47.645Z","dateModified":"2026-10-08T01:28:47.645Z","hiringOrganization":{"@type":"Organization","name":"Keylent","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Jacksonville","addressRegion":"FL","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"1316d73352b8e10e63b3d330"},"url":"https://jobsearcher.com/jobs/1316d73352b8e10e63b3d330"}}