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RAJEEV KUMAR JOSHI

Senior Mobile Engineer | React Native Developer (Android & iOS)
Bengaluru, India | +91 8792169096 | rajeevjoshi91@gmail.com
LinkedIn | GitHub | Portfolio
Professional Summary

Senior Mobile Engineer with 9+ years of experience in mobile application development, including 5+ years building cross-platform Android and iOS applications using React Native and 4 years developing Native Android applications using Java.

Experienced in delivering mobile solutions across Fintech, SaaS, Travel, Entertainment, and Consumer Technology domains using React Native, TypeScript, JavaScript, GraphQL, Redux Toolkit, React Query, REST APIs, and Android technologies.

Owned and executed React Native version upgrades across multiple release cycles, maintaining applications from React Native 0.63 through 0.83 while ensuring compatibility, stability, and smooth production deployments. Hands-on experience with React Native New Architecture adoption, including Hermes, JSI, Fabric, and TurboModules, along with native module integrations, performance optimization, and platform modernization initiatives.

Experienced in white-label applications, multi-environment configurations, localization, accessibility, authentication systems, payment integrations, CI/CD automation, release management, and end-to-end mobile application delivery across Android and iOS platforms.

Core Competencies
Professional Experience
Senior React Native Developer / Senior Android Developer
LETSVENTURE TECHNOLOGIES PRIVATE LIMITED | Bengaluru
Sep 2019 – Feb 2026
Domain: Fintech | SaaS | Startup Ecosystem  |  Key Products: LVX, LVXQ, Scalix
  • Contributed to fintech products serving startup founders and investors across the LetsVenture ecosystem.
  • Designed and developed cross-platform Android and iOS applications using React Native, TypeScript, GraphQL, Redux Toolkit, React Query, and REST APIs.
  • Owned and executed React Native version upgrades across multiple release cycles, maintaining applications from React Native 0.63 through 0.83 while ensuring compatibility and production stability.
  • Contributed to React Native New Architecture adoption, including Hermes, JSI, Fabric, and TurboModules, as part of platform modernization efforts.
  • Delivered 60+ production releases across Android and iOS platforms, including feature launches, framework upgrades, bug fixes, performance improvements, and compliance updates.
  • Built reusable white-label applications supporting multiple products and business use cases from a shared codebase.
  • Managed Development, QA, UAT, Staging, and Production environments using environment-based configurations and release workflows.
  • Implemented multi-language, multi-theme, and accessibility features to improve localization and user experience.
  • Integrated AWS Cognito, Auth0, OAuth, JWT authentication, Razorpay, and Cashfree payment solutions.
  • Developed and maintained native integrations including Camera, Location Services, Push Notifications, Deep Linking, Device Permissions, Analytics, and Crash Reporting.
  • Automated Android and iOS build, testing, and deployment pipelines using Fastlane and GitHub Actions.
  • Participated in architecture discussions, technical planning, code reviews, performance optimization, and Agile delivery processes.
  • Mentored junior developers and contributed to engineering standards, development practices, and knowledge-sharing initiatives.
Software Engineer (Android Developer)
WILDTRAILS TECHNOLOGY PRIVATE LIMITED | Bengaluru
Mar 2018 – Sep 2019
  • Developed Android applications using Java for wildlife exploration and safari planning platforms.
  • Integrated REST APIs and optimized application performance for low-network environments.
  • Improved application stability, responsiveness, and overall user experience.
  • Collaborated with product, backend, and QA teams for feature delivery and production releases.
Junior Android Developer
DUNST TECHNOLOGIES PRIVATE LIMITED | Bengaluru
Dec 2017 – Mar 2018
Projects: Wanderlust, SIFF
  • Developed Android application features using Java for travel and event management platforms.
  • Implemented notifications, multimedia content delivery, scheduling, and ticketing workflows.
  • Integrated REST APIs and supported production deployments and maintenance activities.
Junior R&D Engineer (Android Developer)
PLUREBUS TECHNOLOGIES PRIVATE LIMITED | Bengaluru
Sep 2016 – Sep 2017
  • Developed Android applications using Java for entertainment discovery and booking platforms.
  • Implemented search, booking workflows, multimedia content delivery, and REST API integrations.
  • Collaborated with backend and product teams to improve application performance and reliability.
Featured Projects
LVX & LVXQ – LetsVenture
Technologies: React Native, TypeScript, GraphQL, REST APIs, Redux Toolkit, React Query, AWS Cognito, Auth0
• Investor-focused fintech applications enabling startup investments, portfolio tracking, fundraising workflows, authentication, payments, analytics, and investor engagement features.
Scalix
Technologies: React Native, JavaScript, REST APIs
• Platform helping startup founders discover fundraising opportunities, service providers, and growth resources.
WildTrails
Technologies: Android, Java, REST APIs
• Wildlife exploration and safari planning application optimized for rich media content and low-network environments.
Education
Master of Computer Applications (MCA)
National Institute of Technology Durgapur · 2013 - 2016 | CGPA: 6.97
Bachelor of Computer Applications (BCA)
Saraswati College of Computer Science, Chhatarpur (Affiliated to Dr. Harisingh Gour Vishwavidyalaya, Sagar) · 2009 - 2012 | Percentage: 75.12%
Additional Information
Languages:
English, Hindi
Notice Period:
Immediate Joiner
Preferred Roles:
Senior React Native Developer, Senior Mobile Engineer, Lead React Native Developer