{"id":2604548,"url":"https://alion.io/job/proactiviti-senior-mobile-engineer-ios-react-native-aws","title":"Senior Mobile Engineer (iOS / React Native / AWS)","company":{"id":4423600,"name":"Proactiviti","domain":"proactiviti.com","url":"https://alion.io/company/proactiviti","size_band":null,"is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Manatal","truth_index":null},"role":"Mobile","role_family":"Mobile","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":9,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"Amazon S3","optional":false},{"name":"API Gateway","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"CI/CD","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Git","optional":false},{"name":"MVC","optional":false},{"name":"MVVM","optional":false},{"name":"React Native","optional":false},{"name":"Scrum","optional":false},{"name":"Swift","optional":false},{"name":"SwiftUI","optional":false},{"name":"UIKit","optional":false},{"name":"Apollo Client","optional":true},{"name":"GraphQL","optional":true},{"name":"JavaScript","optional":true},{"name":"Kotlin","optional":true},{"name":"React.js","optional":true}],"status":"live","first_seen_at":"2026-10-15T09:17:07Z","employer_posted_date":"2026-10-15","last_verified_at":"2026-10-15T16:26:18Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Proactiviti is a technology-driven company helping businesses build, scale, and optimize digital solutions through innovation, collaboration, and operational excellence. We partner with startups, scale-ups, and enterprise clients across multiple industries, delivering impactful technology solutions that drive real business results.\nThis role is ideal for an engineer who enjoys solving complex technical challenges, contributing to architectural decisions, and building exceptional mobile experiences across native iOS and cross-platform environments. You will work closely with product managers, designers, backend engineers, and client stakeholders to deliver high-quality applications in fast-paced Agile teams.\nWhat You'll Do\nDesign, develop, and maintain enterprise-grade mobile applications using Swift, SwiftUI, UIKit, and React Native.\nBuild highly performant, scalable, and maintainable mobile solutions across iOS and cross-platform ecosystems.\nCollaborate with backend teams to integrate RESTful APIs, authentication services, and cloud-native solutions.\nDesign and implement secure authentication and authorization flows using modern identity providers and standards.\nIntegrate AWS cloud services including API Gateway, Lambda, Cognito, S3, and serverless architectures.\nDevelop features involving push notifications, analytics, offline capabilities, and real-time data synchronization.\nOptimize application performance, memory management, startup times, and overall user experience.\nImplement automated testing strategies including unit, integration, and UI testing.\nBuild and maintain CI/CD pipelines to support efficient mobile release processes.\nParticipate in code reviews, architectural discussions, and technical mentoring initiatives.\nWork directly with U.S.-based product and engineering teams within Agile delivery environments.\nRequired Qualifications\n9+ years of professional software engineering experience.\nExtensive experience developing native iOS applications using Swift and UIKit.\nStrong hands-on experience with SwiftUI and modern iOS development patterns.\nProduction experience building and maintaining React Native applications.\nDeep understanding of mobile application architecture patterns including MVVM, MVC, and Clean Architecture.\nStrong experience integrating RESTful APIs and backend services.\nExperience with authentication technologies such as OAuth2, JWT, OpenID Connect, and Cognito.\nHands-on AWS experience including: API Gateway, Lambda, Cognito, S3 and Serverless integrations\nExperience with push notifications, analytics platforms, crash reporting, and monitoring solutions.\nExperience implementing CI/CD pipelines for mobile applications.\nStrong understanding of Git workflows and modern software engineering best practices.\nExperience working within Agile or Scrum environments.\nExcellent communication skills with the ability to collaborate effectively with distributed teams and client stakeholders.\nAdvanced English communication skills suitable for daily interaction with U.S.-based teams.\nNice to Have\nExperience with Android development using Kotlin.\nExperience with GraphQL APIs and Apollo Client.\nFamiliarity with Infrastructure as Code and cloud automation.\nExperience with mobile security best practices and compliance requirements.\nExperience building applications at large consumer scale.\nPrevious consulting or client-facing experience.\nWhat Success Looks Like\nDelivering reliable, scalable, and high-performing mobile applications.\nContributing to architectural improvements and engineering best practices.\nDriving technical excellence through mentorship and collaboration.\nBuilding strong partnerships with client stakeholders and cross-functional teams.\nContinuously improving developer productivity, release quality, and user experience.","description_format":"text","description_chars":3809,"description_truncated":false,"requirements":{"experience_years_min":9,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-15T09:17:07Z"}],"visa":[],"liveness":{"score":86,"band":"hot","label":"Hiring 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