You will get Mobile App Development/Mobile App Design/Mobile App Developer / Android/iOS
Top Rated
Top Rated
Project details
I expertly design and Develop native and cross-platform apps for both Android and iOS. Expect quality, best coding practices, and the latest API/SDK integrations on time.
✨ Apps I Can Create:
• Doctor Appointment Booking App
• Food Delivery App
• Taxi Booking Apps
• Health & Fitness Apps
• Social media Apps
• Generative AI Apps
• Entertainment apps
• Shopping Apps
• Marketplace & eCommerce Apps
• On-Demand Delivery Apps
• Food/Grocery Apps
• QR Scan Apps
• Banking & Finance Apps
• Advanced AI Integration Apps
• Real-estate Apps
• Logistic and Transport Apps
• AI-Powered Navigation on Google Maps
• Business Tools using Generative AI
✨ What's Included:
• App Icon & Splash Screen
• Backend Development
• Admin Panel
• Push Notifications
• API Integration
• Custom AI Features
What I deliver:
• Native Android & iOS development
• Flutter apps with rapid multi-device support
• Custom UI screens, animations & layouts
• Secure backend systems & cloud integration
• Database connections & API-driven features
✨I can also help publish your app on Google Play and the App Store.
Let's discuss!
#Mobile App Development, Mobile App Developer, Mobile App Designer
✨ Apps I Can Create:
• Doctor Appointment Booking App
• Food Delivery App
• Taxi Booking Apps
• Health & Fitness Apps
• Social media Apps
• Generative AI Apps
• Entertainment apps
• Shopping Apps
• Marketplace & eCommerce Apps
• On-Demand Delivery Apps
• Food/Grocery Apps
• QR Scan Apps
• Banking & Finance Apps
• Advanced AI Integration Apps
• Real-estate Apps
• Logistic and Transport Apps
• AI-Powered Navigation on Google Maps
• Business Tools using Generative AI
✨ What's Included:
• App Icon & Splash Screen
• Backend Development
• Admin Panel
• Push Notifications
• API Integration
• Custom AI Features
What I deliver:
• Native Android & iOS development
• Flutter apps with rapid multi-device support
• Custom UI screens, animations & layouts
• Secure backend systems & cloud integration
• Database connections & API-driven features
✨I can also help publish your app on Google Play and the App Store.
Let's discuss!
#Mobile App Development, Mobile App Developer, Mobile App Designer
Platform
AndroidApp Type
Hybrid AppDevelopment Technology
Java, Kotlin, SwiftApp Purpose
Dating, Delivery, Entertainment, Education, Health & Fitness, IoT, Lifestyle, Maps & Navigation, Restaurant, ShoppingExpertise
Cross Browser & Device Compatibility, Design, SecurityWhat's included
| Service Tiers |
Starter
$499
|
Standard
$2,999
|
Advanced
$5,999
|
|---|---|---|---|
| Delivery Time | 7 days | 30 days | 70 days |
Number of Revisions | 2 | 3 | Unlimited |
Number of Mobile Operating Systems | 2 | 2 | 2 |
App Store Upload | - | ||
App Icon Design | |||
Splash Screen | |||
Ad Network Integration | - | - | |
Source Code | - |
45 reviews
(42)
(3)
(0)
(0)
(0)
This project doesn't have any reviews.
TA
Trent A.
Jul 7, 2026
Kotlin / Ktor Developer
If you require help with Kotlin or Java development, Harmeet is your girl. Super knowledgeable and talented, and a pleasure to work with. She helped improve our backend application over many years, and we're every grateful for everything she did. Highly recommend A++
PH
Patrick H.
Mar 1, 2026
Java Developer with Expertise in Spring Framework
SA
Steve A.
Sep 17, 2025
30 minute consultation
SS
Sergey S.
Jul 14, 2025
Simple Ktor backend
Well done. Thanks so much.
ED
Eric D.
May 23, 2025
Lead Java Backend Developer
Harmeet was a fantastic addition to our team. They delivered clean, efficient, and well-structured Java front-end code with great attention to detail. Communication was always clear and timely, and they consistently met deadlines. Their ability to quickly understand requirements and adapt to our development process made the project run smoothly. Highly recommended for any front-end development work—would gladly work with them again.
About Harmeet
Java Developer | AI SaaS Developer |Full-stack Developer |Kotlin
100%
Job Success
Sangrur, India - 8:26 am local time
Over the past two years, I have been helping businesses integrate Generative AI, Large Language Models (LLMs), AI Agents, Retrieval-Augmented Generation (RAG), and workflow automation into production systems.
I specialize in OpenAI, Claude, GPT-4, LangChain, LlamaIndex, Vector Databases, AI Chatbots, AI Search Systems, and enterprise-grade backend architecture using Python, Java, Spring Boot, AWS, PostgreSQL, MongoDB, Docker, and Kubernetes.
I help companies move beyond AI demos and build production-ready AI products that scale securely and reliably.
Over the last 10+ years, I’ve architected and scaled SaaS platforms, enterprise systems, and cloud-native applications used by startups and growing businesses across healthcare, fintech, logistics, travel, AI, and real estate industries.
I specialize in Java, Spring Boot, Microservices, AWS, PostgreSQL, MongoDB, Kubernetes, and scalable backend architecture for high-performance SaaS platforms.
Worked on platforms handling real-time workflows, payment systems, enterprise reporting, AI integrations, booking engines, analytics systems, and multi-tenant SaaS infrastructure.
I’ve developed enterprise-grade platforms for healthcare, fintech, e-commerce, and real-time applications, focusing on scalability, security, and long-term maintainability.
My expertise includes:
✔ High-performance REST APIs
✔ Microservices architecture
✔ Cloud-native AWS deployments
✔ Authentication & payment systems
✔ Enterprise integrations
✔ Performance optimization
Whether you need to modernize a legacy Java application, build a backend from scratch, or scale an existing SaaS platform, I can help architect and deliver reliable production-ready systems.
My Core Competencies
1. Java Development:
- Core Java: In-depth knowledge of Java’s features, collections, concurrency, and multi-threading
- Spring Framework: Expertise in Spring Boot, Spring MVC, Spring Security
- Microservices: Designing and implementing microservices architecture with Spring Cloud
- API Development: RESTful APIs with JWT, OAuth, and GraphQL integration
2. Mobile App Development:
- Android Development: Skilled in developing native Android apps using Java and Kotlin
- App Lifecycle: From UI/UX design to API integration and deployment
3. Database & Back-End:
- Database Expertise: Proficient in MySQL, PostgreSQL, and MongoDB for secure, scalable data management
- ORM: Working with Hibernate for object-relational mapping
- Server-Side Scripting: Building efficient backends with Java and Spring.
4. Deployment & Cloud:
- Cloud Deployment: Expertise in deploying Java-based applications on AWS, Azure, and Google Cloud
- Containerization: Proficient with Docker for application containerization and management
5. Security & Performance:
- Application Security: Implementing secure systems with Spring Security, OAuth, and data encryption
- Performance Tuning: Optimizing application speed, database queries, and server-side performance
AI & Generative AI Expertise
✔ AI Chatbot Development
✔ OpenAI API Integration
✔ Claude AI Integration
✔ GPT-4 Applications
✔ AI Agents & Agentic Workflows
✔ Multi-Agent Systems
✔ Retrieval-Augmented Generation (RAG)
✔ AI Knowledge Bases
✔ Enterprise Search Systems
✔ Semantic Search
✔ Embedding Models
✔ Vector Databases
✔ Document AI
✔ AI Workflow Automation
✔ Conversational AI Platforms
✔ AI SaaS Products
✔ LLM Evaluation & Optimization
✔ Prompt Engineering
✔ AI API Development
✔ AI Automation for Business Processes
Industries I Serve
- E-Commerce: Custom checkout systems, payment gateway integration, and scalable shopping carts
- Healthcare: HIPAA-compliant mobile apps and backend systems for patient management
- Finance: Developing secure and efficient transaction systems, real-time data processing
- Education: Learning platforms and mobile apps to enhance educational experiences
- Travel & Hospitality: Building booking engines, itinerary planners, and travel apps
- Real Estate: Custom property listings, user-friendly property search apps
What I Can Help You Build
- SaaS backends
- REST APIs
- Microservices architecture
- Authentication systems
- Payment integrations
- Cloud deployment pipelines
- Enterprise dashboards
If you need a reliable backend engineer to build scalable APIs, SaaS platforms, or cloud-native Java applications, let’s discuss your project.
Keywords:
Spring Boot, Java Backend, SaaS Development, REST API, Microservices, AWS, Scalable Applications, SaaS Architecture, Platform Engineering, Distributed Systems, Event-Driven Architecture, Cloud-Native Development, Enterprise APIs, Multi-Tenant SaaS, AI Integrations, Kubernetes, Docker, Kafka, DevOps, System Design, Scalable Infrastructure, High Availability Systems, Fintech, Healthcare Platforms, Booking Engines, Real-Time Systems
Steps for completing your project
After purchasing the project, send requirements so Harmeet can start the project.
Delivery time starts when Harmeet receives requirements from you.
Harmeet works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Gathering
Project Planning