Sani Mridha
iOS
Android
Web
React Native
Cross-Platform
High Performance
Optimized Apps
Beautiful UI
Pixel Perfect
Fast & Smooth
60 FPS
My Journey & Expertise
Transforming ideas into exceptional mobile experiences across healthcare, automotive, and social platforms
Senior React Native Developer
With 6+ years of experience, I've specialized in building high-performance mobile applications that serve hundreds of thousands of users worldwide.
My journey started in 2019, and since then, I've delivered 20+ production apps across healthcare, automotive, social media, and e-commerce platforms. From concept to App Store deployment, I ensure every pixel is perfect and every interaction is seamless.
I've led development teams, architected scalable solutions, and consistently delivered projects ahead of schedule. Whether it's implementing real-time auction systems, building custom form builders, or integrating complex third-party SDKs, I bring technical excellence and business value to every project.
Key Expertise
Healthcare Innovation
Led development of 5 healthcare apps with 100K+ active users across UK, serving critical patient care needs
Rapid Delivery
Delivered first app version in 20 days for Sweden's largest auto exhibition, Elmia Car Show
Technical Leadership
Scaled React Native team from 1 to 5 developers, established best practices & code quality standards
Tech Stack
Building with cutting-edge mobile technologies
Development Capabilities
Cross-Platform
iOS, Android & Web
Performance
Optimized & Fast
UI/UX Design
Pixel Perfect
App Store
Published Apps
Skills & Technologies
Comprehensive skill set spanning mobile development, cloud services, and AI/ML
Mobile Development
Languages & Core
Development Tools
Backend & Services
Platforms & Distribution
AI/ML & Advanced
E-Commerce
Social Media
Finance
Mobile Apps Portfolio
Production-ready iOS & Android applications serving millions of users worldwide
Direcht Care - Healthcare SaaS
Led the development and contributed to the implementation of every module. Developed multiple dashboards, including features like Food & Drinks, Body Map, Restore Integration, and multidimensional settings.
BlackPlanet - Social Media
Implemented post feed features, including likes, comments, comment replies, image attachments, in-app and push notifications, click-to-view notifications, and share functionality. Integrated third-party SDKs for enhanced camera functionality, Algolia search, chat, user profiles, friend addition, profile settings.
Onest - Ad Listing
Developed each module of the application from scratch. Developed features like login, product listing, filtering, notifications, profile, payment, feedback, and more. Reported to the CEO and distributed the app on Codecanyon.
Nitrx - Social Media
Developed each module of the application from the ground up. Developed features like login, user feed, QR code-based post search, unique QR generation for posts, like, comment, share, link embedding, keyword search, chatting, voice messaging, profile follow, profile editing, and more.
What I Offer
Comprehensive mobile development services from concept to deployment and beyond
Cross-Platform App Development
Build high-performance mobile apps for iOS, Android, and Web with a single React Native codebase.
Custom Mobile Solutions
Tailored mobile applications with complex features, real-time capabilities, and third-party integrations.
App Modernization & Migration
Upgrade legacy apps, migrate to React Native, or optimize existing codebases for better performance.
Team Augmentation & Mentoring
Join your team as a senior developer, lead technical initiatives, and mentor junior developers.
MVP Development (Rapid Launch)
Get your mobile app idea to market fast with a fully functional MVP in 3-6 weeks.
Maintenance & Support
Ongoing support, bug fixes, feature updates, and performance monitoring for your mobile apps.
My Development Process
A proven workflow that ensures quality, speed, and transparency at every stage
Discovery
Understand requirements & define scope
Design & Plan
Architecture, wireframes & timeline
Development
Agile sprints with regular updates
Launch & Support
Deployment, testing & maintenance
Ready to bring your mobile app idea to life?
Experience
Delivered 20+ production apps serving 400K+ users across healthcare, automotive, and social platforms
Senior React Native Developer (Remote)
Bilregistret Sverige AB
Helsingborg, Sweden
Leading cross-platform development for Sweden's premier vehicle search and car auction platform.
- ✓Delivered first app version in just 20 days for Sweden's largest auto exhibition (Elmia Car Show), serving 50K+ attendees
- ✓Built real-time car auction system with socket-based live bidding, processing 1K+ bids daily
- ✓Implemented vehicle search via registration numbers with 100K+ monthly queries
- ✓Integrated deep linking and social logins, increasing user onboarding by 45%
- ✓Led single React Native codebase serving Android, iOS, and Web with 95% code reusability
Senior React Native Developer (Remote)
Sidqam LTD
Manchester, UK
Architected and delivered 7+ healthcare products serving 100K+ users across iOS, Android, and Web platforms.
- ✓Led development of 5 flagship healthcare apps with combined 100K+ active users across UK
- ✓Reduced development time by 20% through reusable quality code and industry-leading architecture patterns
- ✓Built custom Form Builder similar to Google Forms, processing 10K+ patient assessments monthly
- ✓Developed real-time data visualization dashboards for critical healthcare metrics
- ✓Managed CI/CD pipelines ensuring 99.5% uptime and efficient automated deployment
- ✓Integrated 15+ third-party SDKs and partner APIs across multiple healthcare platforms
Senior React Native Developer (Remote)
Upwork
USA
Freelance platform collaborating with 3 companies simultaneously, delivering high-impact mobile solutions.
- ✓Successfully launched apps for 3 different companies on iOS and Android app stores
- ✓Implemented Algolia search reducing query response time from 3s to 200ms, improving UX by 90%
- ✓Integrated native SDKs enhancing app functionality and performance by 35%
- ✓Eliminated critical bugs pre-launch, achieving 4.5+ star ratings on both app stores
- ✓Delivered clear CTO reports ensuring transparency and alignment across all projects
React Native Developer (Onsite)
Lomeyo LLC
Dhaka, Bangladesh
Started as the only React Native developer, grew and led the mobile development team.
- ✓Built and scaled React Native team from 1 to 5 developers within 18 months
- ✓Delivered 8+ production apps including social media, e-commerce, and ad listing platforms
- ✓Developed pixel-perfect UIs across iOS and Android with 98% design accuracy
- ✓Migrated 3 existing React web apps to React Native, expanding user reach by 150%
- ✓Leveraged Firebase, Google Maps, and Styled Components serving 100K+ combined users
- ✓Diagnosed and resolved performance bottlenecks, improving app speed by 40%
.Net Developer Intern (Onsite)
Netsoft Solutions
Dhaka, Bangladesh
Contributed to web application development and backend optimization.
- ✓Developed and tested web applications using .NET framework
- ✓Optimized SQL database queries, reducing load times by 30%
- ✓Built and managed SQL databases with stored procedures supporting 50K+ records
- ✓Collaborated with senior developers implementing core features and performance enhancements
Get In Touch
Let's discuss your next mobile project
Let's Connect
I'm always interested in hearing about new projects and opportunities. Whether you have a question or just want to say hi, feel free to reach out!
Availability
Let's Build SomethingExtraordinary Together
Have a mobile app idea? Need a React Native expert? Let's turn your vision into a high-performance app that users love.