Hire the best Oracle Adf developers

Name: Oracle Adf developers
Brand: Upwork
Rating: 4.8 (27630 reviews)

Check out Oracle Adf developers with the skills you need for your next job.

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Clients rate Oracle Adf developers

4.8/5

based on 27,630 client reviews

$50 hourly
Turgay U.
- 5.0/5
- (58 jobs)
Native Android Developer | Java & Kotlin 🚀 Top Rated Plus 💯 100% Job Success Score 8+ years of experience working on native Android applications for high profile clients and businesses. I've strong Java/Kotlin programming skills including low-level performance optimizations and memory management. ✔ Ml-kit, OpenCv, TensorFlow, Camera, Image Processing ✔ Clean Architecture, MVVM, Firebase, Coroutines, Live data, DataBinding, Dagger2/Hilt, Room, Retrofit, Glide, Payments 🚀 Why Choose Me? 8+ Years of Servicing High-Profile Clients Strong Java/Kotlin Programming Skills Developer with a Keen Eye on Technological Advancements Detail-Oriented and Timely Deliveries

Oracle Adf Developers
Android App
Android Studio
Native App Development
Firebase
Java
Android App Development
Kotlin
Android
Mobile App Development
SQLite
Camera Operation
NFC
Mobile App
Android SDK
OpenCV
$20 hourly
Atendra S.
- 4.9/5
- (53 jobs)
🌟 Top-Rated Upwork Professional 🧑🏻‍💻 10+ years of experience 📱 Android | Kotlin | Java | Jetpack Compose | Kotlin-Multiplatform | Flutter | WearOS | AndroidTV | 🚀 AI | ChatGPT | 💻 Firebase | VoIP | Linphone With over 10 years of extensive experience as an Android Developer, I specialize in native Android application programming with a strong focus on SCRUM/Agile workflow.    I have a proven track record of delivering high-quality mobile applications in various domains, including:  * Airline Domain * Banking Domain * Cargo Management Domain * Logistics Domain * Financial Domain * Social Media/Dating Domain with Video/Audio Chats * Location Tracking Domain  My expertise in mobile development includes:  * Programming Languages: Java, Kotlin * Architectural Patterns: MVVM, MVP, MVC * Design Patterns, Custom Controls, and REST API integration * Material Design and Firebase integration (AdMob, Analytics, A/B testing, etc.) * Jetpack Compose, Jetpack Navigation * Firebase Realtime Database and Storage * Android SDK, NDK, Open Source, Support Libraries * Reactive Programming with rxJava and rxAndroid * Dependency Injection using Dagger, Kodein, and Hilt * Databases: SQLite, Room, Realm, Page * Network Libraries: Retrofit, OkHttp, Volley, ktor * Image Loading Libraries: Picasso, Glide * Crash Reporting and Analytics Tools: Crashlytics, Firebase, Fabric, LeakCanary, Timber * Other Libraries: Gson, AutoValue, JodaTime, AndroidJob, Google Services * Sockets/SignalR * Kiosk Mode * SonarQube code coverage * Kotlin-Multiplatform (One POC)  * Wear OS & Smartwatch development * Mqtt In addition, I am an expert in the Linphone SDK, a powerful tool for building voice and video communication applications. I have in-depth knowledge of integrating and customising the Linphone SDK to create high-quality, real-time voice and video chat functionalities within Android applications. I am experienced in implementing Linphone's advanced features, including call management, audio/video codecs, encryption, push notifications, and more. Whether you need to develop a VoIP application from scratch or enhance an existing app with Linphone capabilities, I can provide the expertise you require.  I have integrated various features and technologies into Android applications, including:  * Beacons integration for proximity-based interactions * Calendar API integration for managing events and schedules * QR Code integration for scanning and processing QR codes * OCR (Optical Character Recognition) integration for text recognition and extraction  For multimedia capabilities, I have integrated Video Chat using WebRTC, ZegoClould, Twilio, and Agora, as well as Audio Streaming. I am familiar with ExoPlayer for HLS Video Streaming (HTTP Video Streaming), RTSP Video Streaming, and DASH Video Streaming.  Other skills and features I offer include Custom Calendar development, Media Gallery implementation, Background Download and Upload functionality, Tiff file format handling in Android, Live Streaming using Agora and ZegoCloud SDK, Deep Linking, LeakCanary for memory leak detection, and code annotations to improve the linting process.  Experienced Kotlin Multiplatform Developer with a track record of delivering efficient cross-platform solutions. Proficient in Kotlin Multiplatform Mobile (KMM) and skilled in creating high-performance apps for Android, iOS, web, and more. Experienced Jetpack Compose Developer, proficient in creating dynamic, interactive, and modern Android UIs. Skilled in leveraging Jetpack Compose's power to build visually stunning and responsive applications. Over the years, I have developed many different types of iPhone and Android apps. These include: - Food delivery app - On-demand app - Home services app - Handy man app - Salon app - Beauty app - Taxi app - Ride app - E-commerce app - Dating app - Health and fitness app - Travel app - Video streaming app - Fintech app - Shopping app - Telemedicine app - Finance app - Real estate app - Social media app - Chat app - Business app - Messaging app - Online courses app - Online education learning app - Tutor app - Hotel booking app - Online grocery order app - Telecommunication app - VoIP app - SIP App - Apps using the Twilio API ✅ Why Clients Hire Me: - Proven 10+ years in Android app delivery - Top-Rated with 100% Job Success - Agile/SCRUM aligned - Strong communication, clean architecture, scalable code - Fast iterations, reliable delivery & business-aligned mindset 📩 Let’s bring your Mobile app idea to life — message me to get started!

Oracle Adf Developers
Push Notifications
WebRTC
Mobile Device Management Software
AOSP
Java
User Authentication
Android
JetPack
Mobile App Development
Wear OS
In-App Purchases
VoIP
Firebase
Android App Development
Kotlin
$55 hourly
Oleksandr I.
- 5.0/5
- (54 jobs)
Hi, I’m an Android developer with over 10 years of experience in building native applications. I work with a modern tech stack, including Android Jetpack, Kotlin Coroutines, Jetpack Compose, MVVM, and Dependency Injection (DI). I also have experience with cross-platform development using Flutter/Dart and Kotlin Multiplatform. Key Expertise: • Audio/Video Calls: WebRTC integration for real-time communication. • In-App Purchases and Google Play Billing. • Machine Learning: On-device ML with TensorFlow Lite, ML Kit. • Geolocation and Firebase Services (e.g., FCM, Crashlytics, Analytics). • Media Processing: Photo, video, and audio. • Platform Migration: Converting iOS/web apps to Android. I’m skilled at integrating third-party APIs, working with CI/CD pipelines, and implementing modular architectures for scalable and testable code. I’d love to help bring your ideas to life, from early-stage concepts to full-scale app solutions. Feel free to reach out! Thanks, Oleksandr Ilchuk

Oracle Adf Developers
Android SDK
Mobile App Development
Android App Development
Firebase
Smartphone
Android
Flutter
Java
Kotlin
$105 hourly
Dawn M.
- 4.7/5
- (741 jobs)
** HubSpot Design Certified ** Recently recognized as a HubSpot Champion User Worked on many different types of applications and with many different technologies. Quickly learn new programming languages and technologies. Can also read and understand existing code to find and fix bugs. Have 26 years experience in IT. Have a Bachelors Degree in Math as well as an MBA. I have worked with many programming languages including COBOL, Visual Basic, C, C++ and Java. Currently working on projects utilizing Angular, JQuery, Java Script, CSS, HTML5, Hubspot and Flex. I am familiar with content management systems. I have worked on front end designs/pages and back end services. Have done responsive development, desktop applications, and mobile applications.

Oracle Adf Developers
CSS
HTML
Content Management System
HubSpot
CMS Development
Website Customization
Agile Software Development
Blog Development
Inbound Marketing
Templates
Business with 100-999 Employees
iOS Development
Android App Development
JavaScript
Java
$39 hourly
Olena I.
- 4.9/5
- (78 jobs)
I’m a team leader of the team of java full stack developers capable of solving tasks of any complexity at every stage of the software development life cycle, from analyzing requirements and building architectures for startups to supporting and changing legacy projects. We specialize in developing a backend for mobile (rest/soap) and enterprise web applications or specific tasks that are better implemented by those tools that are supported by the Java language. We also have sufficient expertise and experience to develop a UI in Angular or React. We work with various relational databases (MySql, Postgresql, Oracle) and NoSQL databases (Mongo, Cassandra, Redis). As the primary tool, we use the Spring Framework. However, we have experience working with others (Vert.x, Micronaut, etc.) We monitor the quality of our code using tools for unit testing, static code analysis, and continuous integration/delivery. Also, we continuously review the code for vulnerabilities and performance issues. We develop cloud solutions with automatic deployment both on Amazon AWS or other cloud providers and on the physical servers of the customer.

Oracle Adf Developers
Architectural Design
Performance Optimization
Enterprise Software
CI/CD
Test-Driven Development
DevOps
Angular
Cloud Computing
Database Management
Microservice
REST API
Spring Framework
Micronaut
PostgreSQL
Java
$48 hourly
Ana R.
- 4.2/5
- (11 jobs)
I started in mobile development before the invention of the iPhone in a mom-and-pop games company creating the first multiplayer cellphone games for Qualcomm's BREW platform in C and C++. Since then, I've done freelance and speculative work in many languages, especially Java and Kotlin, and created a few apps which can be seen on my app store page, demonstrating the use of Amazon Web Services S3, Lambda, and Cognito integration; TextToSpeech and SoundPool/MediaPlayer resources; and a custom and user-customizable InputMethodService (built-in keyboard), among other things. (See my Google Play store linked below.) I'm seeking jobs to make use of and expand my experience in Kotlin, Android, and AWS and to this purpose I am happy to dive into existing code to solve bugs and insert new functionality, in addition to from-scratch development. Recent and Current Projects: IoT Bluetooth Display and Relay - Android App in Kotlin for phone/tablet and wearable Real-time control, calibration, processing, display, relay, and recording/playback of multiple remote sensors of various types in custom groupings and sessions. Maintaining bluetooth connection through out-of-range and device interruptions. WeeGee - Android App in Kotlin, Amazon Polly, under development Experimental alternative communication system in which touch interaction over custom dynamic menus builds strings of phonemes spoken aloud by the device's text-to-speech engine or Amazon's Polly service. DecodeTheNews - Android App in Kotlin, Amazon S3 and Lambda, released in October 2018 Challenging cryptogram game presenting current or historical headlines rather than quotes and a sophisticated interface. ImageKeyboard - Android App with InputMethodService, released February 2019 For users of icon-based alternative or augmentative communication, this app converts a directory tree of named images into a paged keyboard that can be set to replace the native Android keyboard in any text-input context. Insert and delete whole words, making text editing easier. Customizable preferences include grid size, highlight, trail, and other feedback behavior, touch sensitivity, and page navigation options. Retains several custom keyboards for easy context-swapping. GridMaker - Javascript Chrome App/Electron, under development as an Android module In support of the ImageKeyboard app, this program automatically parses icon grid images into a directories of named icon images, using OCR where possible. ChooseBook - Android App with Amazon S3, released in June 2018 Choose-your-own-adventure style ebook reader for young kids with zoom-and-pannable pictures, text-to-speech reader, and links between pages for easy navigation. A Javascript web page helps organize text, pagelinks, and images for each book in JSON files stored in Amazon S3. The app can browse available titles and download selected books, to view immediately or store on device for offline use. DecodeTheNews - Web Game, released 2015 Javascript/PHP application which finds and encrypts current headlines, storing them along with letter frequencies, a list of unique words, and other statistics for use by the cryptogram-style game. Visual tools in the game, including a pattern-matching dictionary, help players solve the cryptogram. A timer and leaderboard add suspense. Users can create an account or track their game history through a unique ID based on ip and computer configuration. Past Projects: RylaCampbell.com - Wordpress site with custom photo gallery with thumbnail navigation Songtunnel.com - PHP/MySQL Web Page, released 2007 A lyrics search site which grabbed and indexed song lyrics from other websites and enabled an advanced text/artist/album search. Matching songs are sorted by relevance with title, artist, album, year, and lyric snippet, as well as links to the Amazon media sample and "Buy now" referral link if available. Multiplayer Snake - C++/BREW Mobile app with Java, released 2005 The first true live-action multiplayer game on this platform. Developed to show off Entelepon's seamless networking layer. In offline and low-population games, non-player-controlled snakes using path-finding and goal-balancing algorithms fill in for other players with different levels of difficulty. Multiplayer Tank - C++/BREW Mobile app with Java, released 2004 The first turn-based multiplayer game on this platform where both player's actions were graphically represented in real time on the game-board. First use of Entelepon's UDP messaging layer. Offline play was available, against an AI using path-finding and cost/benefit strategies to simulate an intelligent opponent. Players could be matched at random or from a group of users within a custom "channel". Pre-coded taunts added a bit of social interaction. Dozens of game maps and random tank-fleet configurations made each game unique.

Oracle Adf Developers
Android
Bluetooth
Amazon Polly
MySQL Programming
Android App Development
Amazon Cognito
Amazon S3
Kotlin
Java
JavaScript
$50 hourly
Thai N.
- 4.9/5
- (45 jobs)
I'm an Oracle-certified Java expert with much experience in backend technologies, including but not limited to Spring Framework, JPA, MongoDB, etc. I'm also an AWS-certified and Kubernetes-certified DevOps engineer; hence, I can help if you need additional infrastructure resources. With 20,000+ hours of work on Upwork alone, I believe I can make a meaningful contribution to your project. As a side note, if you do a Google search with the keywords "spring bean", "spring boot interview questions", or "maven integration testing", you'll find my writings at the top spots.

Oracle Adf Developers
Terraform
Docker
Web Service
Hibernate
RESTful API
MySQL
API
Kubernetes
Amazon Web Services
Spring Framework
Spring Boot
Java
$30 hourly
Dmitriy S.
- 5.0/5
- (2 jobs)
10+ Skills | 15+ Years experience in Engineering field Android, Java/Kotlin/Python/C/SQL, UI/UX, Git, GitHub/GitLab/Bitbucket, Android Studio/IntelliJ IDEA/Eclipse, Trello/GitLab board, SOLID Firebase, Bluetooth and much more - developing projects from scratch (setup, architecture, features development) - deveopment for embended devices - support legacy projects - integration of new technologies - working with Google guidelines I can just do any job for you, no matter how difficult the task you describe I do

Oracle Adf Developers
Firebase
Coroutine
Retrofit
Android Studio
Java
SQLite
Kotlin
Android App Development
Mobile UI Design
$30 hourly
Taras H.
- 4.3/5
- (129 jobs)
Hi, I am one of the best freelancer for web scraping / crawling / automated data extraction solutions on Upwork. I am doing web scraping jobs only and completed over 500 jobs and served hundreds of clients. My prices are more than reasonable and affordable compared to the service quality you will get, so please do not hesitate to request a quote if you need an expert scraper / crawler. I am developing my own custom program for each website I am going to scrap / crawl. I'm not using a pre-built software so i can adapt my program to any format and any website easily. There is no exceptional case, i can scrape any website using any technology (captchas, ajax requests etc.). I can provide scraped data in whatever format you want: csv, excel, xml, mysql etc. I can also provide you the program i used to scrape that website. I am developing my programs in java and you may run them on windows, mac and linux/unix machines. Up to now I developed applications to extract data from well known e-commerce marketplaces, search engines, business and local directories, real estate listings and many other websites. The work on Upwork is my full time job and not a side gig, so I dedicate a lot of attention to my clients, available to respond throughout the day, and work full days to complete the projects as fast as possible. You won't regret choosing to work with me. Thanks Taras H

Oracle Adf Developers
CSS
Java
HTML
Ruby on Rails
JavaScript
Data Scraping
Python
$15 hourly
Amit K.
- 5.0/5
- (9 jobs)
Hi, If you are looking for a 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞, 𝐜𝐫𝐞𝐚𝐭𝐢𝐯𝐞, 𝐚𝐧𝐝 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞𝐝 App Developer, you have come to the right place - I will eagerly become your longtime partner. I am an expert 🆃🅾🅿- 🆁🅰🆃🅴🅳🏅 App Developer (Android, iOS) with 7+ years of experience, 𝐈 𝐡𝐚𝐯𝐞 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐝, 𝐭𝐞𝐬𝐭𝐞𝐝, 𝐚𝐧𝐝 𝐝𝐞𝐩𝐥𝐨𝐲𝐞𝐝 𝐬𝐞𝐯𝐞𝐫𝐚𝐥 𝐚𝐩𝐩𝐬 𝐨𝐧 𝐛𝐨𝐭𝐡 𝐭𝐡𝐞 𝐚𝐩𝐩 𝐬𝐭𝐨𝐫𝐞 𝐚𝐧𝐝 𝐩𝐥𝐚𝐲 𝐬𝐭𝐨𝐫𝐞.I prefer long-term work and am In love with coding and am proud of my creations! I am working on high-quality iOS/Android applications for different industries, including medicine, marketing, advertisement, etc as a developer. I have overall 6 years of experience. It's important to me to create supportable and upgradable applications. I prefer to build long-term relations with my customers. When they come back to add support for new mobile devices or new features - I am always glad to see that application continue its life. My Skill Set: ------------------- - Flutter, Dart - Swift, Xcode, iOS SDK - Java, Kotlin, Android Studio - Super Level UI Customization, Suggestion of Best User-Friendly and elegant UI/Graphic design - Google Map Service, Real-time tracking, Geo-location, GPS, Geo-fencing - Web services, REST/SOAP, XML/JSON Domains on which i developed apps ------------------------------------------------- On-Demand Marketplace Utility Social networking/Chat/messaging Mini-games E-commerce Bluetooth/beacons Taxi/booking Fitness/health Coding Strategy: ------------------------- *Well-optimized, clean, robust, and well-commented code with qualified naming conventions. * Multi-Language Support * Localization And Internationalization support * API /Web Service Integration Thanks!

Oracle Adf Developers
RESTful API
Apple Xcode
Android App Development
iOS Development
Firebase
Kotlin
Java
PHP
Firebase Realtime Database
Swift
$40 hourly
Jorge C.
- 4.6/5
- (4 jobs)
I have strong experience in web applications using .NET Web Forms, MVC, Java Spring MVC, Primefaces, Richfaces and other Java Server Faces frameworks. In addition, I have worked as a programmer in Unity, and using C++, Lua, and C# programming languages. I have been working as a developer for seven years and currently I am a EPiServer Certified Developer and pursuing a Sitecore certification. Knowledge: C++, C#, .NET 4.0, Web Forms. MVC .NET, Java, Swing, Angular JS, Python, JSF, JPA, EJB, Bootstrap, Unity 3D, SQL Server, MySQL, Oracle, MongoDB, Scrum, Power Designer, WCF, UML, Windows Phone and Android. Episerver MVP 2019

Oracle Adf Developers
Jakarta Messaging
CSS
API Integration
AJAX
Microsoft SQL Server
ASP.NET Core
RESTful Architecture
API
Python
C++
C#
Visual Basic
Java
ASP.NET
ASP.NET MVC
$15 hourly
Naveed K.
- 5.0/5
- (10 jobs)
👋 Greetings! I'm Naveed Khan, a passionate and skilled full-stack developer with a proven track record in crafting efficient and elegant digital solutions. With a diverse skill set ranging from frontend to backend technologies, databases to DevOps, and cloud platforms, I bring a comprehensive approach to every project. 🚀 Technical Expertise: On the frontend, I specialize in turning design concepts into interactive, user-friendly interfaces using React JS, Next JS, Vite JS, HTML, CSS, and JavaScript. I also have a keen eye for aesthetics and a knack for creating responsive designs with Tailwind CSS. In the backend realm, I have hands-on experience building robust APIs and server-side applications using Spring Boot, Express JS, and Django. My backend solutions are designed for high performance, security, and scalability. 💾 Database Proficiency: I'm well-versed in working with a variety of databases, including Oracle, MySQL, PostgreSQL, and MongoDB. Whether it's relational or NoSQL, I can design efficient database structures and optimize queries to ensure seamless data management. 🛠️ DevOps & Cloud Mastery: My expertise extends to the DevOps landscape, where I've worked with tools like Jenkins, Circle CI, and Team City to automate and streamline the development and deployment processes. I'm also proficient in containerization using Docker and orchestration with Kubernetes. Monitoring and troubleshooting are second nature to me, thanks to my experience with Splunk. As for cloud platforms, I've successfully deployed applications on Oracle Cloud, Azure, AWS, and GCP. I can help you choose the right cloud solution for your project's needs and ensure a smooth migration if required. 🌟 Why Choose Me? I'm not just a developer; I'm a problem solver. I take pride in understanding the unique challenges each project presents and tailoring solutions that align with business goals. My dedication to clean code practices, attention to detail, and commitment to staying up-to-date with the latest industry trends ensures that the solutions I deliver are of the highest quality. 📢 Let's Collaborate: Whether you need a dynamic web application, a seamless API integration, or assistance with your DevOps strategy, I'm here to help. Let's discuss your project requirements and create something amazing together. Feel free to reach out to me, and let's turn your vision into reality!

Oracle Adf Developers
Tailwind CSS
CI/CD
Kubernetes
Docker
Redux
React
Spring Boot
JavaScript
Python
Java
$25 hourly
Paweł C.
- 5.0/5
- (35 jobs)
Minecraft Server Developer Extraordinaire Hello, I'm Pawel, a seasoned Minecraft server developer with over 7 years of experience in crafting and optimizing immersive gaming environments. Expertise: 🛠️ Minecraft Server Development: Crafting robust servers and plugins, staying updated with the latest trends. 💻 Java Programming: Creating efficient, secure, and high-performance code. 🧰 Development Tools: Skilled in IntelliJ IDEA and managing databases with T-SQL and PL/SQL. ⚙️ Systems Management: Expert in managing and optimizing Minecraft server systems. 🌐 Server Technologies: Proficient in Paper (Spigot) and BungeeCord configuration. 🚀 Redis: Extensive knowledge in using Redis for caching, pub/sub messaging, and synchronizing multiple servers for real-time data consistency. 🔌 API Integration: Enhancing functionality and connectivity with API integrations. 🖥️ Swing Applications: Developing modern and functional Swing applications. 🤖 Additional Skills: Web scraping, automation, algorithm optimization, and bot development. Collaboration: Passionate about creating seamless Minecraft experiences. Let's collaborate to bring your Minecraft vision to life. Contact: Ready to transform your Minecraft project? Contact me today and let's craft extraordinary adventures together.

Oracle Adf Developers
Proxmox VE
System Administration
Apache Maven
Gradle
Swing
DNS
Network Engineering
Redis
SQL
Plugin Development
JetBrains IntelliJ IDEA
Minecraft
phpMyAdmin
Java
Linux
$100 hourly
Yannick G.
- 5.0/5
- (6 jobs)
I am a software engineer with 20 years of experience in multiple industry. I am a very passionate and an excellent problem solver. I work with Java 11 using Spring, Elastic Search, Jersey, Hibernate, Postresql , Mysql and ActiveMQ. I also have a lot of experience in AWS services such as Cloudformation, DynamoDB, Lambda, SQS , RDS. I have the AWS developer associate certification.

Oracle Adf Developers
PostgreSQL Programming
Linux System Administration
Apache ActiveMQ
Amazon Elastic Beanstalk
AWS Lambda
Hibernate
Java
Oracle Database
Docker
RESTful API
$30 hourly
Mary Grace A.
- 5.0/5
- (15 jobs)
I am a Software Engineer for 13 years expert in Coldfusion PHP and Wordpress. My skills includes the following - Programing ( ColdFusion, PHP, Java ) - Scripting (Javascript, jQuery, Mootols, Prototype, ReactJS, VueJS) - Database (MySQL, MsSQL) - CMS (Wordpress, Joomla, Drupal, Shopify) - CSS (Bootstrap) - Integrations (Single Sign On, Payment - Paypal, AffiniPay, BluePay, Authorize.net, eWay)

Oracle Adf Developers
Adobe ColdFusion
Payment Gateway Integration
Web Development
MySQL
React
SQL
Vue.js
Joomla
jQuery
PHP
Java
JavaScript
AJAX
WordPress
$95 hourly
Peter K.
- 5.0/5
- (10 jobs)
Full Stack Software Developer and Project Manager with 10 years of experience. Working on different migration projects of core banking and insurance systems. Hands on mentality with a focus on code quality, unit testing, design and customer satisfaction.

Oracle Adf Developers
Oracle
Angular
Drools
OpenShift
JavaScript
Ionic Framework
PostgreSQL
Vaadin
Jira
Scrum
SQL
Spring Boot
Java
TypeScript
Jenkins
$65 hourly
Nadya K.
- 5.0/5
- (46 jobs)
I am TOP RATED, a strong Java and PHP developer from the United States. In the past, I worked for the biggest companies such as Oracle, Accenture, First Data, Barclays Bank, etc. I have 20+ years of experience in web development and I highly specialize in - Java (Java EE, Spring, Spring Boot, Spring Annotations, Spring MVC, Spring Security, JMS, Java Struts, Java Servlets, JSP, Hibernate, MyBatis, REST, ActiveMQ). - PHP (Laravel, WordPress) - Javascript (React, Angular, JQuery, Vue.js) - HTML, CSS, Bootstrap, Tailwind CSS - MySQL, Postgres, Oracle, NOSQL, MongoDB. - AWS, WildFly, Apache Tomcat I have built more than 200 systems and I am comfortable working with both existing and new projects. I helped hundreds of clients in their business and I am here to help you as well!

Oracle Adf Developers
Web Service
J2EE
Vue.js
AngularJS
HTML
React
Laravel
PHP
SQL
Microservice
Java Persistence API
Spring MVC
Spring Boot
Spring Framework
Java
$10 hourly
Debraj B.
- 5.0/5
- (16 jobs)
I have been a very successful Mobile Application Developer for over 11 years, working for individuals all over the world. Since I have started Android Development, I have been spending every spare minute code for the Android, and learning everything on mobile application development. Additionally to development of new apps, a lot of work I do is on-going maintenance of existing popular apps. I always aim to maintain a long term relationship with my clients. I am a full-time freelancer and can work U.S business hours.

Oracle Adf Developers
Android Room Persistence
Core Java
Android App
iPad App Development
Android SDK
iOS Development
Android App Development
Flutter
Swift
Mobile App Development
Kotlin
SQLite
Android
Firebase
Native App Development
$23 hourly
Oleksii K.
- 4.9/5
- (57 jobs)
Greetings! I am a highly experienced and top-rated mobile developer from Lviv with over 15000 working hours on Upwork. My expertise lies in developing native iOS and Android apps, as well as cross-platform apps using React Native and Flutter. Over the years, I have worked on a wide range of projects, from simple utility apps to complex enterprise-level solutions. My skills include: • Strong knowledge of Swift, SwiftUI, Objective-C, Java, Kotlin, React Native, and Flutter • Experience working with various APIs and SDKs, including Firebase, Google Maps, and AWS • Proficiency in using version control systems such as Git and SVN • Ability to design scalable, maintainable, and reusable code • Strong debugging and troubleshooting skills • Familiarity with Agile methodologies In addition to my technical skills, I am also an excellent communicator and team player. I have worked with clients from various industries, and I understand the importance of clear communication, timely delivery, and excellent customer service. If you're looking for a reliable and skilled mobile developer, I am here to help. Feel free to get in touch to discuss your project requirements in detail. Thank you for your time, and I look forward to working with you! Best regards, Oleksii .

Oracle Adf Developers
SwiftUI
iOS SDK
React Native
Flutter
In-App Purchases
Java
Objective-C
Android App Development
iOS Development
Kotlin
Swift
Smartphone
Mobile App Development
Android
iOS
$27 hourly
Dmytro P.
- 5.0/5
- (10 jobs)
Hey folks👋 Welcome to my Upwork profile! I'm a highly-skilled Backend developer. During my work, I always keep attention to writing clean and high-quality code. Always try to make a positive impact on a project to achieve long term strategic goals. Working very well in cross-teams. I'm interested in solving various difficult tasks and am ready to deal with most projects related to my stack⤵️ Backend: - Java 8+, JavaEE, JavaSE, Socket - Spring (Spring boot, Spring JPA, Spring MVC, Spring data, Spring security and other Spring modules) - Hibernate, JOOQ, JDBC - SQL (MySQL, MS SQL, PostgreSQL, SQLite) -NoSQL (MongoDB, Elastic, Redis, Firebase) - Time Series(InfluxDB, TimescaleDB, Prometheus) - AWS (S3) - Migration (Liquibase, Flyway) - Thymeleaf - QA(JUnit, Mockito, Karate Integration Test, Wiremock) - Auth Server(FusionAuth, Keyclock) - Kubernetes(Rancher Api, java native client), Proxmox - RabbitMQ, Stripe, Vault, microservice architecture Frontend: - JSP, HTML, XML Others: - Git - Docker - Postman - IntelliJ Idea Tools: - Jira, Asana, Trello, ClickUp - Slack, MS Teams, Skype I'm very interested in solving various difficult tasks and am ready to deal with the most projects related to my stack, so do not hesitate to contact me!

Oracle Adf Developers
MySQL
Jakarta Server Pages
Spring MVC
JDBC
Hibernate
Spring Boot
Java
SQL
$20 hourly
Kaan Can Y.
- 5.0/5
- (2 jobs)
I have graduated from the Department of Computer Engineering, and I have two years of professional experience in software development. I have a strong command of the English language. I have involved in an in-house project within the company called ITSM which is used to manage work processes between developers, consultants and customers. I was engaged in backend development using Java Spring, but I have previously worked on frontend development using Angular as well. I am familiar with concepts such as Git, Jira, and Agile. I have worked with SQL during this experience and I have strong knowledge about it. Plus, I have developed various features for the product called Appointer which is used for managing appointments for a Belgian company called Palit Consulting. I have integrated Stripe to the project and developed the subscription feature and online payment method. I have used Javaspring for backend development and Angular for frontend.

Oracle Adf Developers
JUnit
Docker
PostgreSQL
MySQL
Stripe
Git
TypeScript
Spring Boot
Java
JavaScript
$10 hourly
Vipul B.
- 4.9/5
- (84 jobs)
I have 9 years of experience in mobile app development and 5 years of experience in flutter. My strengths are dedication to work to the best of my abilities, wealth of experience, clear and articulate communication with fluency in English. I have ample experience in working internationally. Experienced in flutter/dart, Bloc, MVVM, clean architecture, Firebase, Google Cloud Functions. I am currently looking for new opportunities in mobile app development (flutter).

Oracle Adf Developers
Website
Adobe Photoshop
Management Skills
Android App Development
iOS Development
Node.js
React
Swift
Flutter
Dart
Kotlin
PHP
Java
$40 hourly
Waheed A.
- 5.0/5
- (36 jobs)
🚀 Elevate Your Business with a Top-Rated Mobile Apps Developer 🌐 Hi there! Are you looking for a developer who can turn your ideas into reality? Look no further! I'm Waheed, a Top-Rated Developer on Upwork with over 10 years of experience and a 100% job success score. I’ve successfully delivered projects for over 30 clients, all of whom have rated my work with full 5-star reviews. Key Skills: - iOS Development: Swift, Objective-C, Xcode, SwiftUI, UIKit, Core Data, Core Animation, ARKit, iOS SDK - Android Development: Kotlin, Java, Android Studio, Android Jetpack, Material Design, SQLite, Room Persistence Library, Dagger2, Retrofit - Cross-Platform Development: Flutter, Dart, React Native - Other Relevant Skills: Third-party SDK Integration, In-app Purchases, Push Notifications, App Store/Google Play Store Deployment Why Choose Me? - 📱 Expertise Across Platforms: Proficient in both iOS and Android development, as well as responsive web applications, ensuring your project shines on every device. - 🎯 Customized Solutions: Tailoring each app to meet your unique needs, delivering a user-friendly experience that keeps your customers coming back. - 🚀 Cutting-Edge Technologies: Utilizing the latest tools and frameworks to build fast, secure, and scalable apps. - 🌟 Proven Track Record: Successfully completed projects for over 30 clients, all of whom have rated my work with full 5-star reviews. I also maintain a 100% job success score. - 🏆 Top-Rated Developer: Recognized as a top-rated developer on Upwork, reflecting my commitment to quality and client satisfaction. - 🔄 Agile Development: Transparent and collaborative process, keeping you in the loop at every stage to ensure your vision is perfectly realized.

Oracle Adf Developers
SQL
RxJava
C++
Apple Xcode
React Native
Android App Development
Flutter
Swift
Java
Kotlin
iOS
Android SDK
iOS Development
$65 hourly
Hamza R.
- 5.0/5
- (59 jobs)
8 plus Years of experience in android development worked 70+ fully functional apps I am a professional mobile developer specializing in Android App Development. I have a bachelor's degree in Software Engineering. Highlights worked 70+ fully functional applications for Android devices with more than 1M+ downloads. Known for writing efficient, maintainable, and reusable code. Proficient in design, data structures, problem-solving, and debugging. Expert in the interaction between various devices and versions of Android. BS Software Engineering degree Currently, I have these applications on my personal android developer account: • Muslim Matrimonials app (Firebase backend) • Audiobooks free download (API call) • Ok Ameer Urdu assistant (Firebase backend) • Copy hashtags for Instagram (web scraping and API call) • Video touch lock for youtube - locki touch lock(100,000+ downloads with 4.1 ratings ) • Animated gif live wallpaper - Lite(700,000+ downloads with 4.0+ ratings) • Snap map fake location spoofer(100,000+ downloads with 4.1 ratings) • Champion trophy live score • Latest Urdu news updates • Jang epaper QR Code Reader • Pakistani Urdu news Professional Technical Skills: Deep understanding of Android SDK Android Studio MVVP(android new ViewModel lib) JSON/Volley Firebase Libraries integration like Facebook, YouTube, Exo player,Rxjava Google play services e.g. Google map Android Annotation. Material Design Data Binding RX android Kotlin Programming Java Programming Web scrapping Design patterns Github Tensorflow Proguard Reverse engineering SQL lite with ROOM lib Constraint layout Non-Technical Skills Passionate I can very quickly learn to new technologies like Kotlin, android new architecture components, and so on Collaboration and communication Writing Bonus! A Good Idea Youtuber Understanding of Google plays policies. I am very active on StackOverflow and Github. Looking forward to working with you. Let's build the strong and trusted relationship

Oracle Adf Developers
Native App
Google Maps API
JSON
TensorFlow
Android SDK
GitHub
Mobile App Development
Android App Development
Tablet
Smartphone
Android Studio
Android
Java
Firebase
Kotlin
$160 hourly
Andrew A.
- 5.0/5
- (8 jobs)
I am an experienced, versatile, and creative full-stack software engineer with extensive experience in designing and building innovative technology solutions to solve complex problems. HireRight, 8/3/23, EFE, DF9742BFF305B507A30CB5BC320A2E71

Oracle Adf Developers
Quantitative Analysis
API Development
Vue.js
JavaScript
React
Java
HTML5
AngularJS
TypeScript
$25 hourly
Ihor S.
- 5.0/5
- (13 jobs)
⏳ 5+ years of mobile development experience 🏆 100% Job Success 📱30+ finished projects and apps 🌎 Always satisfied clients from all over the world: USA, Ireland, UK etc. 🚀 Various projects: from audio streaming to big bank apps 🧑‍💻Hi, I am a software developer with 5+ years of experience in Android application development. I am interested in challenging and exciting projects that allow me to use my set of skills. I can provide a full-cycle solution starting with the idea or if it's an existing project with legacy code. 🛠 My mobile expertise covers the stack below: Java & Kotlin for Android Flutter for crossplatform apps Firebase for Backend 🔥I can help you to build an app of your dream, create a MVP or design your project architecture. I'm interested in different topics but EdTech is my ♥️ 📩Please, feel free to send the invitation to your job post or book a consultation with me. I'm always looking forward to new opportunities!

Oracle Adf Developers
In-App Subscription
Model View ViewModel
Model View Presenter
Android SDK
Mobile App Development
Android App Development
In-App Purchases
Android
Smartphone
Kotlin
Java
Firebase
$35 hourly
Mustafa B.
- 5.0/5
- (6 jobs)
I'm working as software developer. I'm coding Java, C# and PHP. About Me: Java, C#, PHP, Devops, Docker, E-Signature - Java * Spring, Spring Boot, * Spring Data, Spring REST, Spring Web Services * Spring Security, Spring JMS, Spring Cache, Spring AMQP * SOAP and REST API * Hibernate and JPA (ORM) * Hazelcast and Redis * Elasticsearch * ActiveMQ, RabbitMQ * MYQL, Postgresql, Percona Cluster - C# (.NET) * Entity Framework * Windows Form Application * Class Library * WCF Webservice * REST API (ASP.NET Web APIs) * Microsoft SQL - PHP * Codeigniter - Electronic Signature * iTextPDF * Bouncycastle (.NET and Java) * Pkcs11 (Smartcard, HSM) * OpenSSL * CAdES, XAdES, PAdES Programming * E-Signature ETSI Standards and Specifications * SignServer, EJBCA installation and configuration - Devops * Jenkins (CI/CD) * Nexus Reposiyory * Docker Swarm and Kubernetes * Dockerize Java, C#, NodeJS, Gradle, PHP Apps * Gitlab CI/CD * Github Action (CI/CD) * CircleCI (CI/CD) * TravisCI (CI/CD) * Azure DevOps (CI/CD) - Operating Systems * Linux * Fedora * Ubuntu * CentOS * Windows * MacOSX - Tools * IDE: Visual Studio, Eclipse, IntelliJ IDEA, Visual Studio Code, Phpstorm * Version Control: SVN, Git * JIRA, Gitlab, Redmine

Oracle Adf Developers
Spring Framework
Docker
DevOps
Spring Boot
Jenkins
CI/CD
GitLab
Google Cloud Platform
Java
Hibernate
C#
SOAP
Linux System Administration
Linux
PHP
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Last updated: Jun 23, 2025

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