Android developer, specialized in Android app development, having extensive experience in Native Android development for Android mobile and tablets, hybrid & cross-platform app development, and building innovative, highly customized, robust, scalable, feature-packed, and modular Android app development solutions.
I have in-depth working experiences in Android Studio, Android SDK, Eclipse, SQLite, MYSQL, MSSQL, Cassandra, JavaScript, CSS, JSON, jQuery, REST, HTML5, XML, Ajax and implement creative and innovative functionalities to with user experiences.
Responsible for designing and implementing new innovative features and functionalities, establishing Android app development architecture, ensuring high-performance and availability, and managing all Android mobile app development & technical aspects. I work closely with web developers, project stack holders, and end customers to ensure an effective, visually appealing, and intuitive implementation.
As a full-stack Android developer, I have successfully delivered a wide range of custom Android app development projects with eye-catching user-friendly UI design and high-end functionalities. I understand all aspects of developing mobile applications: design, architecture, development, and publishing.
Are you looking for a full time & dedicated full-stack Android developer to develop a user-friendly high-end functionality based Android mobile application? I will love to engage myself as a full-stack Android app developer and assist you with innovative and creative strategies.
Android Development Technology expertise:
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As a full-stack Android app developer, I have decent expertise on native & hybrid cross-platform Android app development technologies:
✅ Languages for Native AndroidApp Development: Core- Java, Android
✅ Android App Development Frameworks: Dalvik, ART.
✅ Android App Development Tool: Android Studio, Eclipse
✅ Build Android apps for Google Phones and Tablets (HoneyComb till Nougat), Web.
✅ Amazon MWS API, AWS, Repricing, Sales Tracking.
✅ Networking/Cloud for Android App Development: JSON, REST APIs, XML, Firebase, Parse, Google APIs.
✅ Live Stream Video/Audio, WebRTC, OpenTok, Financial App, Event App, Loan Calendar
✅ Android App Testing and Performance: Ranorex, Appkitbox.
✅ Social network integration (Facebook, Twitter, LinkedIn, Google) on Android Apps
✅ Web Service, Ajax, XML, RSS, SOAP, WSDL.
✅ Image Processing
✅ Push Notification, Geo-Location - GPS location processing, Media streaming, RESTful APIs on Android mobile apps
✅ Debugging, fixing, and maintenance of existing code and Upgrading Android apps (making apps compliant to latest OS).
✅ 2-D Animations
✅ Android App Design UI/UX tools: Sketch, Photoshop
✅ Wireframing: Moqups, Mindware.
✅ In-App purchases implementation on Android Mobile Apps
✅ ADS integrating (Admob, Adwords, Video Ads).
✅ Google Maps, open street Maps, KML Overlay implementation, Google Map Service, Geo-Location.
✅ Speech recognition, text-to-speech.
✅ Android Google Play Market submission process.
✅ Understanding of Android mobile security protocols, analytics, and social channel integration.
✅ Photo/video/audio management (capturing, editing, and sharing).
✅ Android App Chat API’S: Video Conferencing (Twilio, XMPP, jabbered).
✅ Device Kit: Bluetooth Low Energy (BLE), iBeacon, Datzing, NFC, credit card reader, MIDI.
✅ Android Analytics SDKs: Google Analytics, Firebase, FlurryAnalytics.
✅ Android App Backend Development: Node.js /PHP backend development
✅ Database Management for Android Apps: MongoDB/PostgreSQL/MySQL/SQLite
✅ Payment API's along with FacebookGraphAPI, Twitter, Instagram, Google Analytics, AWS
✅ App Store Optimization - ASO and Marketing
Android Development Services We Offer:
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✅ Android App Development for Android Mobiles and Tablets
✅ Cross-platform Mobile App Development
✅ Mobile Game Development
✅ Internet of Things (IoT)
✅ AR/VR App Development
Types of Mobile Apps:
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As an experienced Android developer, I have worked on various types of Android mobile apps:
✅ Social Networking
✅ Utility & Gaming
✅ Chat/Messaging
✅ News/Magazine
✅ Geo Location
✅ Online Shopping
✅ m-Commerce
✅ iBeacon
✅ Audio/Video Streaming
✅ Movies
✅ Entertainment
✅ Tour/Travel Applications
How do we communicate and report?
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We always prefer to keep our work transparent, and for this reason, we like to be in touch with our valued clients on a daily, weekly & monthly basis.
According to the requirement, we use many types of project management tools for Android mobile app development projects communication.
⦿ Upwork Message Board
⦿ JIRA
⦿ Azure DevOps Server
⦿ Asana
⦿ Trello
⦿ Zoho Projects
Android
Android Studio
Java
Mobile App Development
Android App Development
Android SDK
Android NDK
Mobile App Design
Eclipse IDE
SARABPREET SINGH B.
New Delhi, India
$5/hr
4.6
65 jobs
Senior .NET Developer | ASP.NET | C# | Web API | SQL Server
I’m a Software Engineer with 8+ years of experience in Microsoft technologies, specializing in building scalable web applications, REST APIs, and automation solutions using the .NET ecosystem.
I help businesses design, develop, and maintain secure, high-performance software applications. I have strong experience across the full Software Development Life Cycle (SDLC) including architecture, development, testing, deployment, and long-term support.
What I Can Help You With
• Custom ASP.NET / .NET web application development
• REST API development and system integrations
• Full-stack development (Angular, JavaScript, HTML, CSS)
• SQL Server database design and performance optimization
• Bug fixing, debugging, and application maintenance
• Legacy system upgrades and modernization
• TradingView indicators and Pine Script automation
Core Technologies
Backend
• C#
• ASP.NET (Web Forms, MVC, Web API, Razor)
• .NET Framework / .NET Core
• Supabase
Frontend
• Angular
• JavaScript
• HTML
• CSS
• jQuery
• AJAX
Databases
• Microsoft SQL Server
• MySQL
• SQLite
• Oracle
• Sybase
• Supabase
Programming Languages
• C#
• VB.NET
• Python
• Java
• C / C++
• PHP
• MATLAB
• Excel VBA
• Pine Script
Tools & Platforms
• Visual Studio
• Visual Studio Code
• SQL Server Management Studio (SSMS)
• IIS
• Android Studio
• NetBeans
• Eclipse
• Anaconda
• Linux
Why Clients Work With Me
✔ 8+ years of professional development experience
✔ Clean, maintainable, and scalable code
✔ Strong communication and collaboration skills
✔ Reliable delivery and long-term support
✔ Experience working with distributed teams
Project Highlights
• Developed enterprise ASP.NET applications with SQL Server backends
• Built secure REST APIs integrated with multiple systems
• Created TradingView Pine Script indicators and automation tools
• Delivered full-stack solutions using ASP.NET and Angular
I’m available for short-term projects, long-term development, and ongoing support.
If you’re looking for a reliable .NET developer to build or improve your application, feel free to send me a message.
Let’s build something great together. 🚀
C#
.NET Framework
Python
Microsoft VBScript
ASP.NET
Visual Basic for Applications
C
Windows Forms
Google Sheets
Microsoft Visual C++
SQL Programming
PDF Conversion
Pine Script
TradingView
Purav G.
Ahmedabad, India
$25/hr
4.9
58 jobs
I have 14+ years of experience in architecture, designing, and developing large to small enterprise applications.
☛ Software Development Skills:
1. Programming language: Java, Python, Php, C#, ASP .NET, Linq, Framework 4.5, MVC
2. Web technologies: HTML, CSS, AJAX, Angular, JQuery, JavaScript
3. Version Controlling: Microsoft Team Foundation Server, Git, SVN
4. Development Tools: Eclipse, Visual Studio, SQL Server
5. ERP: Odoo
6. CMS: Magnolia, WordPress, Sitecore
7. Database: MongoDB, PostgreSQL, MariaDB, MS SQL Server
☛ Front-end Development Skills:
1. Wireframing Tools: Figma, Adobe XD
2. Prototyping Tools: InVision, Marvel, Proto.io, Zeplin
3. Web languages: HTML, HTML5, CSS, CSS3, JavaScript, Jquery
4. Front-end frameworks: AngularJS, ReactJS, React Native, MeteorJS, ExtJS, EmberJS, BackboneJS, YUI, AUI, CycleJS.
5. Task Management Tools: Trello, Asana, Wrike
☛ My strength:
1. Software development pedigree.
2. Partnership-based collaborative approach.
3. On-time delivery with minimal involvement from your side.
4. An offshore-based hybrid model that lowers your cost.
☛ Why you should hire me?
1. Industry centric knowledge
2. Domain expertise
3. Quality of work
4. Following international coding standards
5. Daily communication and updates for the feedback
I'm glad to discuss your requirement and provide my suggestions that add value to your application which makes it more user-friendly and helps you achieve your goals. Awaiting to hear from you.
Java
Amazon Web Services
Android App Development
AngularJS
Ecommerce Website Development
J2EE
Odoo
Apache OFBiz
Magento
Liferay
WordPress
AWS Lambda
Amit R.
Chandigarh, India
$25/hr
4.7
18 jobs
🚀 Senior AI/ML Engineer | LLMs, Agentic AI, RAG Systems | Python + React + Node (Claude, GPT, Llama, Deep Seek)
I build production-grade AI systems — the kind that don't just demo well, but actually run in production with real users, real data, and real stakes.
From LMS platforms with AI-generated curriculum, to CRMs where every module is AI-first, to a mobile app that simulates a person's face and voice from childhood to old age — I've shipped the full spectrum of what's possible with today's models. If you have an idea that sounds "a bit ambitious," that's usually where I do my best work.
What sets me apart:
✅ 9+ years across AI/ML, backend, and full-stack engineering
✅ Hands-on with every major model ecosystem — OpenAI, Anthropic Claude, Google Vertex, AWS Bedrock, LLaMA, Stable Diffusion
✅ Agentic AI specialist — multi-agent systems, tool-use, RAG, context-aware chatbots
✅ Startup-tested — I've architected from zero for early-stage founders and scaled systems for high-growth teams
✅ No hand-waving — I ship clean, documented, production code and hit deadlines
✅ Comfortable owning the whole stack: research → architecture → code → deployment → iteration
🧠 AI / ML Stack
🔹 LLMs & Generative AI — GPT-4o, Claude 3.7, LLaMA 4, Gemini, Claude Code, Cursor/Windsurf workflows
🔹 Agentic AI — conversational agents, dialogue systems, multimodal agents, voice-enabled bots
🔹 RAG & Vector Systems — embeddings, vectorization, VectorDBs, semantic retrieval pipelines
🔹 Image/Video/Audio Generation — DALL-E, Midjourney, Stable Diffusion, ElevenLabs, HeyGen
🔹 Automation & Orchestration — n8n, Make, custom agentic workflows
🔹 ML Frameworks — TensorFlow, PyTorch, Scikit-learn, Azure AI SDKs
🔹 ML Techniques — Classification, Regression, Clustering, Recommendation Systems, Time Series, Predictive Modeling, Gradient Boosted Trees, Random Forests, NLP, A/B Testing
💻 Engineering Stack
🔹 Languages — Python, JavaScript/TypeScript, Node.js, React.js, Next.js
🔹 Backend — Flask, Django, Flask-RESTful, REST APIs, GraphQL, SQLAlchemy
🔹 Databases — MongoDB, MySQL, AWS RDS, Elasticsearch, S3, HDFS
🔹 Cloud & DevOps — AWS (Lambda, EBS, EMR, S3, RDS), Docker, Linux (RHEL/CentOS/Ubuntu)
🔹 Distributed Systems — Parallel Computing, MapReduce, Open MPI, OpenMP
🔹 Tools — Git, SVN, WandB, Plotly, BeautifulSoup, Eclipse
🛠 Recent Projects
🔸 AI-Powered LMS Platform — course curation, AI-generated content, automated curriculum paths
🔸 AI-Native CRM — every module powered by LLMs: lead scoring, auto-drafting, pipeline intelligence, conversational search
🔸 Life Simulation Mobile App — generates photorealistic imagery and video of a user aging from childhood to old age using multimodal AI
🔸 Custom RAG + Agentic Chatbots — for domains ranging from customer support to internal knowledge retrieval
How I work:
I don't cut corners. I ask the questions most developers skip — what happens when this scales? what does this cost per user? where will it break? — and I build accordingly. Code quality, documentation, and clean architecture aren't nice-to-haves for me; they're the default.
If you're building something AI-first and want a partner who can translate a vague idea into a shipped product — and push back when something isn't going to work — send me a message. Share your brief, a rough concept, or even a problem you're stuck on. I'll reply with a clear, opinionated next step.
Keywords: Artificial Intelligence, Machine Learning, LLM, Large Language Models, GPT, Claude , Anthropic Claude, LLaMA, OpenAI API, AWS Bedrock, Google Vertex AI, Agentic AI, AI Agents, Multi-Agent Systems, RAG, Retrieval-Augmented Generation, Vector Database, Vectorization, Embeddings, Conversational AI, Chatbot Development, Context-Aware Chatbots, Multimodal AI, Voice AI, NLP, Natural Language Processing, Python, Flask, Django, Node.js, React.js, Next.js, TensorFlow, PyTorch, Scikit-learn, MongoDB, MySQL, AWS, AWS Lambda, Docker, Elasticsearch, GraphQL, Stable Diffusion, DALL-E, Midjourney, ElevenLabs, HeyGen, n8n, Make, Automated workflow, LLM prompt engineering, Cursor AI, Claude Code, AI Automation, AI Integration, Solution Architecture, Predictive Analytics, Recommendation Systems, Time Series Analysis, Startup MVP, AI Product Development
OpenAI API
Claude
Artificial Intelligence
AI Agent Development
AI Development
Python
Node.js
API
Machine Learning
Large Language Model
AI Bot
AI Trading
AI-Generated Code
AI App Development
AI Image Generation
AI Policy
AI Model Training
AI Model Development
Conversational AI
Retrieval Augmented Generation
Ronak S.
Ahmedabad, India
$28/hr
5.0
2 jobs
I am a Java/J2EE Developer with 7+ years of experience in building scalable and secure web applications using object-oriented and client–server technologies. I specialize in backend development, REST APIs, and enterprise-grade solutions.
🚀Core Technologies
Java, Core Java, Java Collections Framework, Spring Framework, Spring Boot, Spring MVC, Java Servlet API, Java Persistence API (JPA)
💻 Web & Application Development
Web Application Development, Application Testing & Maintenance, RESTful API Development, Microservice-ready Architecture
🛠️ Low-Code Platforms
Case360 – Car Damage Assessment Application
Appworks (LowCodeGuide) – BSI Enterprise Application
📂 Tools & Development Practices
Git, GitHub, Version Control, Agile Software Development, Jira
🏆 Projects & Achievements
CRM Application using Spring Boot APIs
ERP System for Construction Sites (Project-based Spring Boot solution)
Car Damage Assessment Application (Case360)
BSI Application (Appworks Low-Code Platform)
Academic Project: Organization Management System for student data, assignments, and class records
I focus on delivering clean, maintainable, and business-oriented solutions with strong attention to performance and scalability.
Web Application
Web Development
Java
Core Java
Java Collections Framework
Spring Framework
Spring Boot
Spring MVC
Java Servlet API
Java Persistence API
Git
GitHub
Version Control
Agile Software Development
Jira
SP S.
Gorakhpur, India
$20/hr
5.0
9 jobs
📌 Need a reliable Java developer who can take your system from idea to deployment—fast, clean, and scalable? I’ve been doing exactly that for 14+ years as a Java Spring Boot Developer.
As a senior Java Spring Boot Developer, I help businesses build high-performance, cloud-native applications using Java Spring Boot, microservices architecture, and modern engineering practices. Whether you need a Spring Boot developer, a backend architect, or a hands-on Java developer, I bring both technical depth and product thinking.
I specialize as a Java Spring Boot Developer in building modular, scalable, and cloud-ready systems. As a Spring Boot developer, I design clean architectures for Java microservices, real-time systems with Kafka or RabbitMQ, and high-load applications. As a Java developer, I ensure systems are maintainable, testable, and optimized for long-term growth.
Working as a Java Spring Boot Developer, I frequently collaborate with frontend teams using Spring Boot React and Spring Boot Angular stacks. As a Spring Boot developer, I align backend logic with frontend needs, ensuring smooth integration across JavaScript, HTML CSS JavaScript, and UI layers. My experience as a Java developer also includes working with JavaFX interfaces when needed.
Cloud is a key part of my work as a Java Spring Boot Developer. I’ve deployed scalable systems on AWS and GCP, acting as both AWS and GCP architect. As a Java developer, I work with AWS DevOps tools like Lambda, API Gateway, Cognito, S3, and EC2. As a Spring Boot developer, I integrate backend services with GCP tools such as Firestore, Pub/Sub, and Cloud Functions, ensuring performance and reliability.
Databases are another strong area. As a Java developer, I’ve worked with PostgreSQL, MySQL, SQL Server, Oracle, MongoDB, and Cassandra. As a Spring Boot developer, I design efficient schemas, optimize queries, and handle large-scale data systems. Every Java Spring Boot Developer project I take on includes a strong focus on database performance and scalability.
Clean code and testing are essential in my workflow as a Java Spring Boot Developer. I rely on JUnit testing, TDD, and CI/CD pipelines. As a Java developer, I use Maven, Docker, GitHub Actions, and Jenkins to ensure stable delivery. As a Spring Boot developer, I focus on building systems that are reliable, testable, and easy to extend.
📊 Snapshot of My Expertise
💻 Delivered 20+ systems as a Java Spring Boot Developer, including fintech platforms and SaaS applications
☁️ Worked as a Java Spring Boot Developer and cloud architect using AWS and GCP infrastructure
📊 Optimized large-scale databases as a Java developer, improving performance by up to 60%
🔁 Built intelligent systems integrating Spring AI as a Spring Boot developer
🔐 Secured APIs using OAuth2 and Hibernate as a Java Spring Boot Developer
🧪 Maintained high test coverage using JUnit and CI pipelines as a Java developer
🧰 Collaborated across teams delivering full features as a Spring Boot developer
If you’re looking for a Java Spring Boot Developer, a reliable Java developer, or an experienced Spring Boot developer who can handle complex systems and deliver scalable solutions I’m ready to help.
📩 Send me a message I usually reply within a few hours.
Java
Git
Hibernate
Spring Framework
Spring Boot
MySQL
SQL
RESTful API
Microservice
MongoDB
Spring Batch
Web Development
Docker
Apache Maven
Apache Kafka
Spring Security
Agile Software Development
Software Development
Desktop Application
JUnit
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