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  • $80 hourly
    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.
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    PostgreSQL Programming
    Linux System Administration
    Apache ActiveMQ
    Amazon Elastic Beanstalk
    AWS Lambda
    Hibernate
    Java
    Oracle Database
    Docker
    RESTful API
  • $50 hourly
    My name is Saul Hidalgo, a Computer Engineer with a passion for developing Java and .Net software. I have been fortunate to work with exceptional teams and have had the opportunity to contribute to various sectors, including National Security/Defense in the United Kingdom, Oil companies, and Universities such as Harvard Business Publishing. The software I have created is currently being successfully utilized by these organizations. I thrive on new challenges and continuously seek opportunities to expand my skills. You can explore my public contributions on my GitHub account: saulhidalgoaular. Currently, I reside in Turkey and possess fluency in both English and Spanish. Below are my areas of expertise and skills: 1. Code Translation and Conversion: - Proficient in translating code across various languages, with expertise in Python, Java, Delphi, C++, and C#. 2. Document Management System (DMS) - OpenKM: - Extensive experience in developing workflows, automations, cron tasks, and integrations using the Java/PHP API. - Configuration of daily backups. - Skilled in utilizing OpenKM as a DMS. 3. Algorithms and Programming: - Strong command over algorithms and programming skills, particularly in C/C++ and Java. - In-depth knowledge of data structures, strings, sorting, arithmetic and algebra, combinatorics, number theory, backtracking, graph traversal, algorithms for graphs, dynamic programming, and computational geometry. 4. Accounting: - Well-versed in managing material movement between stores and shops. - Proficient in handling retail-related accounting tasks. 5. Point of Sale (POS) Area: - Experience in integrating POS software with label printers, fiscal printers, barcode readers, fingerprint scanners, and keyboards.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Core Java
    Microsoft Excel
    Document Management System
    API
    Algorithm Development
    Data Structures
    API Development
    Hibernate
    Object-Oriented Programming
    Java
    .NET Framework
    MySQL
    Desktop Application
    C++
  • $75 hourly
    Experienced iOS/Android Developer in Swift / Java who has successfully delivered several apps to the App Store (Apple and Google Play Store) on time and on budget. I am familiar with most of popular design patterns (MVC, MVVM). I have vast experience working w/ Social networking apps, Location/Map based apps, Fitness apps, Food ordering apps, Mobile games, ARKit, CoreLocation, Alamofire, as well as several other popular 3rd party SDKs. As a reliable Top-Rated Plus developer with over 8 years of experience, I’m committed to the highest industry standards in all the work I do. I also pride myself on possessing a high level of professionalism, maintaining excellent communication, meeting and exceeding client expectations, and providing solutions for problem-solving in a timely manner. I come highly recommended from all my previous clients and hope that I can continue to do so if you choose to hire me for your project. Got an idea for the next big thing? Have you been dreaming about creating your own application? If you have wireframes and need to turn them into a functional application or perhaps just a notebook with drawings of your designs, I can assist you in turning that creativity into a polished and published application for both Android and iOS platforms.
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    Shopify
    Web Development
    AR Application
    App Development
    JSON
    Chat & Messaging Software
    Push Notifications
    Android
    ARCore
    Java
    MySQL
    Swift
    Native App Development
  • $75 hourly
    Ever felt swamped in the vast sea of mobile app developers? It's frustrating when deliveries are late, functionalities go missing, and codes resemble intricate mazes. Trust me, you aren't the only one navigating these waters. Many collaborators have shared stories of past stumbles. But here's a ray of hope: we can steer towards a brighter horizon. With a decade under my belt and a heart full of passion, I aim to rewrite these narratives. Some Milestones: ⭐ Spearheaded development for Fitbit, which impressively raised $66M. ⭐ Had the honor of collaborating with Pure, Powerdot, and Xsat, all of which celebrated significant investment milestones. ⭐ Steered numerous projects using cutting-edge technologies, simplifying and accelerating the development trajectory. ⭐ Seamlessly merged the principles of Agile & Scrum, fostering flexibility and quick turnarounds. Let me introduce myself I'm Sergey, possibly your next Lead Android/iOS Developer. The past decade has been an exhilarating roller-coaster, packed with invaluable experiences, challenges, and a string of successful projects. I've lent my expertise to startups, and industry giants, helping them manifest their mobile app dreams. Why do they choose me? ✅ A relentless drive to craft projects that stand out and garner rave reviews. ✅ Undying support post-project because our relationship isn't just transactional. ✅ A rich toolkit encompassing Kotlin, Swift, and trailblazing frameworks like Jetpack Compose & SwiftUI. ✅ Agility in approach with a deep-rooted foundation in OOP & Functional programming styles. My Array of Specialties: 📱 Leading mobile development with Kotlin, Java, Swift 🚀 Cross-platform mobile app development using Flutter, React Native 🌐 Backend prowess with Firebase and Node.js. 💻 Architectural excellence with MVVM, MVP, MVI, and VIPER. 🔄 Transparent updates and effortless communication, ensuring you're always in the loop. In a nutshell? I value transparency, efficiency, and making a tangible difference. It's not just about crafting any mobile app, but sculpting one that resonates, scales, and surpasses the norm. Ready to embark on an extraordinary journey? Let's unite over a virtual coffee and set the wheels in motion for your next mobile marvel!
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Machine Learning
    VPN
    Wear OS
    Smartphone
    Mobile App
    iOS
    Android
    iPad App Development
    Kotlin
    Android NDK
    Java
    Android App Development
    Android SDK
    Swift
    iOS Development
  • $75 hourly
    I am a highly experienced Java developer with 20 years of industry experience and I have been specializing in implementations using Adobe Experience Manager (AEM) for the past 8 years. I've built solutions in AEM 6.1 - 6.5 and AEMaaCS. In 2018, I was one of the winners of the Adobe Immerse 2018 Community Code Contest, as well as a presenter at the Adobe Immerse virtual conference, leading a discussion on Creating Custom ContextHub Stores and UI Modules in AEM. I have also contributed to ACS AEM Commons (the main AEM open source project) by helping to build Shared Component Properties. I also have solid experience working with various JavaScript frameworks like jQuery and VueJS and the drive to pickup new ones when necessary. I am also familiar with Less, SCSS, and CSS and the concepts of building responsive sites using Bootstrap and AEM Grid. I strive to write clear and maintainable code, and fully document my code to ensure future developers have a clear understanding of all methods and classes. Also, I will gladly provide any additional documentation or training materials requested, which will be well structured and well written. I am a strong problem solver and skilled at exploring and debugging complex problems to get software applications back on track when strange errors or edge case scenarios arise.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    NodeJS Framework
    Adobe Experience Manager
    Vue.js
    Spring Framework
    CSS
    JavaScript
    Jakarta Server Pages
    HTML
    Java Servlet API
    jQuery
    Java
  • $75 hourly
    I am a professional software developer with 25 years of experience. I focus on mobile app development for Android and iOS, web development, and cloud services. Throughout my career I have gained experience in many different technologies, from modern cloud, mobile, and web development architectures all the way back to mainframe systems. My app development experience includes location services, map integration, user authentication and user profile management, payment functionality, media playback including both audio and video, and in-app purchases. I can work with many services available from Amazon Web Services (AWS) and Google Cloud Platform (GCP). I am committed to producing a quality product. I always stand behind my work and communicate as much as I can. The more my client and I both know about what is being done, the happier everyone is.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    ChatGPT
    Google Cloud Platform
    User Profile Creation
    Location-Based Service
    Firebase
    Amazon Web Services
    Node.js
    Java
    Kotlin
    Swift
    iOS Development
    iOS
    Android App Development
    Android
    Mobile App Development
  • $40 hourly
    Creative back-end developer dedicated to building elegant solutions that meet business demands. Over 10 years of experience developing software of different scales ranging from small startups to large enterprise applications. Implemented back-end as well as front-end with the main focus on the former. Good communication skills proven through work experience in distributed team projects. 𝗕𝗮𝗰𝗸-𝗘𝗻𝗱 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: Java, Kotlin JavaEE, Spring, Guice JDBC, JPA, Hibernate JUnit, Mockito, Cucumber, FitNesse Maven, Ant Git, SVN Jenkins, Sonar TypeScript, JavaScript Node.js Jest Webpack 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: MySQL, MariaDB, Oracle MongoDB, AWS DynamoDB 𝗖𝗹𝗼𝘂𝗱 𝗣𝗿𝗼𝘃𝗶𝗱𝗲𝗿𝘀: Amazon Web Services 𝗦𝗲𝗮𝗿𝗰𝗵 𝗘𝗻𝗴𝗶𝗻𝗲𝘀: Solr, AWS Elasticsearch 𝗙𝗿𝗼𝗻𝘁-𝗘𝗻𝗱 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: Vue HTML, CSS, Bootstrap Should you need any further information, please do not hesitate to contact me.
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    Distributed Computing
    Node.js
    Microservice
    Amazon Web Services
    NoSQL Database
    Spring Framework
    TypeScript
    Java
    JavaScript
    SQL
    MongoDB
  • $30 hourly
    I have 11 years experience in software development. My technology stack are as follows: - VueJS/Next.js/React/Astro - TypeScript - NodeJS - PHP - Custom/Laravel - TailwindCSS - Bootstrap - JQuery - Docker - CircleCI (CI/CD) - Github Actions - Serverless - AWS Services - Java (Android development) - Server Management - Ubuntu & Windows - Shell/Bash Scripting (deployment automation) I am keen to details, and I work hard to provide beyond expectations. Let's work together.
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    Docker Compose
    AWS CloudFormation
    Amazon ECS
    AWS Lambda
    Next.js
    React
    CircleCI
    PHP
    Vue.js
    Laravel
    Amazon Web Services
    Java
    Docker
    JavaScript
    Node.js
  • $40 hourly
    With over 8 years of experience as an Oracle certified developer, I specialize in JavaFX desktop application development, boasting expert knowledge of the JavaFX framework. My forte lies in applying architectural patterns and adhering to best practices, resulting in the creation of clean, expandable code for your projects. I am passionate about delivering robust and user-friendly applications, always striving to guarantee client satisfaction. My dedication extends beyond technical expertise; I am also a proficient communicator and an effective team player, ensuring seamless collaboration on every project. In addition to my core skills, I am well-versed in essential development tools like Git, Maven, Gradle, Eclipse, IntelliJ IDEA, and JProfiler. This comprehensive skill set enables me to navigate your projects with precision and efficiency. Let's work together to transform your Java development goals into reality.
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    JetBrains IntelliJ IDEA
    Desktop Application
    JavaFX
    OpenGL
    MQTT
    User Interface Design
    Game Development
    SQL
    Git
    Java
  • $55 hourly
    Distributed and highly concurrent software with 10+ years of experience. BSc and MSc in Computer Science. Former Nokia employee. I have served in the telecommunication industry for a decade and was responsible for products serving millions of users daily.
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    Chatbot
    Large Language Model
    Distributed Computing
    Multithreaded Programming
    JDBC
    Spring Boot
    Python
    Java
  • $45 hourly
    With over 9 years of experience as a Mobile Developer, I bring to each project: ✓ Steadfast Commitment to Quality: Upholding the principle that excellence is the only standard, I approach every project with meticulous care and precision, ensuring outcomes that are not just completed, but masterfully executed. ✓ Passion for New Technologies: My enthusiasm for innovation drives me to continuously explore and integrate the latest trends and advancements in mobile development, keeping my solutions at the forefront of technology. ✓ Holistic Approach: Balancing innovation with reliability, I deliver projects that exceed client expectations, merging cutting-edge technology with dependable performance to create impactful solutions. ✓ Drive for Challenges: The dynamic and ever-evolving landscape of mobile development fuels my pursuit of new challenges and opportunities. Leveraging my extensive skills, I strive to make a significant difference in the mobile technology sphere, pushing boundaries and contributing to projects that set new benchmarks.
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    Android UI Design
    RESTful API
    Google Maps API
    JSON
    Core Java
    XML
    Android SDK
    Android App Development
    iOS Development
    Swift
    Kotlin
    iOS
    Android
    Java
    Firebase
  • $40 hourly
    Hey there! 👋🏻 👨🏼‍💻 I'm an experienced Full Stack Developer, with expertise in both Web and Mobile Applications. I can also provide services in the area of scripting/automation (for example crypto trading bots, data scrapers, social media channel automation, etc.) Depending on the project, I could also provide services in terms of server configurations and deployments, as well as security consultancy and testing with no extra fees. Some keywords describing my areas of expertise are as follows: Backend development: - Java (Spring framework) ☕️ - NodeJS (ExpressJS) 📝 - Python (Flask) 🐍 Frontend + Mobile development: - ReactJS ⚛️ - Flutter 🎯 - Native Android (written in Java) 🤖 Cloud - deployment: - AWS ☁️ - GCP ☁️ - Docker 🐳 Database systems: - MySQL 🫙 - PostgreSQL 🐘 - MongoDB 🍃 My experience comes from both professional work and personal projects. If you're interested in working together, don't hesitate to hit me up! 🚀
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Android
    Flutter
    Linux
    PostgreSQL
    React
    MongoDB
    Node.js
    JavaScript
    Python
    HTML
    Java
    CSS
  • $48 hourly
    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.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Android
    Bluetooth
    Amazon Polly
    MySQL Programming
    Android App Development
    Amazon Cognito
    Amazon S3
    Kotlin
    Java
    JavaScript
  • $50 hourly
    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
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    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
  • $90 hourly
    I’m a programmer with more than 10 years of experience who can work in different programming langauges using different frameworks. I can create any application type: ● web based ● desktop If I don’t know any programming language or framework which you want to use to build your application then I can learn it in couple days. SKILLS ● PHP ● Javascript ● jQuery ● Bootstrap ● AJAX ● MySQL/PostgreSQL ● REST API ● HTML/HTML5 ● CSS/CSS3 ● C/C++ ● Ruby (and framework Ruby On Rails) ● Python ● Java ● CUDA Computation ● OCR (on C/C++, Python, Java) EXPERINCE ● Freelance 5+ years (up to July 2014). I was working hard to learn what clients want to see, to learn different programming languages and frameworks. Those years taught me to learn new things everyday to provide high-quality solutions for my client. Here's some of my works (PHP, MySQL, HTML, CSS, JavaScript): ○ dev.louepartout.com ○ kilosolution.com ● Swiss Interactive Software GmbH (August 2014 - December 2014). Front-End and Back-End developer for gambling platform and websites (using the platform). Here's you can see some of the websites we built (PHP, MySQL, HTML, CSS, JavaScript, Bash): ○ betboro.com ○ sports.flutterclub.com ○ sports.princessstar.com ○ globalbet.eu ● Ad.net (February 2015 - Present).
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    HTML5
    CSS 3
    C++
    Java
    MySQL
    React
    Bot Development
    Automation
    Data Scraping
    Python
    PHP
    Data Extraction
    Web Crawling
    JavaScript
    Selenium
  • $120 hourly
    10 years of experience working on native Android applications for high profile clients and businesses. 100% Job Success | 11,000+ Hours | Top Rated Plus | 5 Star Reviews Exclusively From planning, developing and publishing to maintaining and supporting high quality Android applications. I hope you see the experience displayed in my profile as an indication of my reliability. ✔︎ Constantly updating my knowledge with the most recent design patterns and code conventions; ✔︎ The delivery of a product that respects the highest standards of usability, performance and appearance is guaranteed; ✔︎ Great cost-benefit by delivering faster and higher quality products than the average; ✔︎ Flexible availability to always meet the client's needs. Vast experience managing development teams located in different places around the world. As an example, I've been managing a team that averaged 7 developers located in different countries, such as Canada, Ukraine, Pakistan, India and Brazil. ✅ Mobile Development Leader; ✅ Native Development; ✅ Kotlin and Java Expert; ✅ Clean code, DRY and KISS principles; ✅ Unit and automated testing; ✅ Well documented code; ✅ UI/UX Best Practices; ✅ NoSQL and SQL Databases; ✅ API Integration; ✅ Web Services Development. MySQL, SQLite, PostgreSQL, SQL Server, Firebase, Java, Kotlin, Android Studio, Android SDK, Android NDK, Device Owner, Play Store...
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    RESTful Architecture
    Android
    MySQL Programming
    Material Design
    Android SDK
    SQLite
    PHP
    Firebase Cloud Firestore
    Java
  • $55 hourly
    Hi. I’m a native Android developer with 7+ years of software development experience. I’m working with modern development stack: Android Jetpack, AndroidX, Coroutines, LiveData, DataBinding, Room, Rx, DI, MVVM, Git, etc. I also have experience in​ using Flutter/Dart to build cross-platform solutions. Some areas in which I have extensive experience: - Media processing (photo, video, audio). - Geolocation. - Integration of third-party API like Facebook, Google, Twitter, Dropbox, Amazon. - Firebase services (FCM, Analytics, Crashlytics, AdMob, etc.). - Machine learning. - In-App Purchase. - Converting Web/IOS apps to Android. - And more… Please feel free to contact me and I'll help you at any stage, from an idea or small app to a full-scale solution. Thanks!
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Android SDK
    Mobile App Development
    Android App Development
    Firebase
    Smartphone
    Android
    Flutter
    Java
    Kotlin
  • $45 hourly
    I'm an experienced and professional mobile and software developer doing freelance, working remotely (telecommute) and looking for great projects to work on. I love to make your ideas alive. I care about every single line of my code. Summary of Qualifications • Expert understanding of core mobile technologies standards • Development of software, mobile web apps • Solid understanding of how the android OS works for the best performance • Passionate about all aspects of development • Modern tooling and workflow • Ability to write high-performance, maintainable and reusable code • Appreciation for quality, usability, user experience (UX), accessibility and compatibility • 5+ years of experience • Highly motivated, self-starter, fast learner, hard worker, organized, attentive to details and a team player • Good communication skills. Fluent in English , both written and verbal • Sense of aesthetic and design • Always up-to-date with the latest technologies, techniques, optimizations and best practices Hire me!
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Core Java
    Mobile App Development
    Android App Development
    In-App Purchases
    Camera
    Social Media Account Integration
    Android
    Java
    Firebase
  • $50 hourly
    I'm a full stack software developer with experience in Java and Android projects. I focus on service and delivering the best experience to my clients, while providing quality software on a timely fashion. I have experience with various technologies to help fulfill any kind of job. I'm also open to having a chat with my customers, if they so desire, so we can arrange any details about the job. I also have experience with Cyclos Banking System Software, providing consultant services to small-medium banks. I've done several integrations with 3rd parties software with it, also developed plenty of aditional feature for it too, like bank statements and import of payments. I have experience on the following languages and technologies: -Java: Everything enterprise, Servlets, JSF, Primefaces and JPA. -JavaScript: pure Script, NodeJS and AngularJS. -PostgreSQL, SQLServer, SQLLite I also have experience providing products and solutions for financial institutions. My biggest desire is to serve my customers as if it was me requesting the product, I always strive to deliver the best software since I wouldn't settle for less.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Email Campaign Setup
    J2EE
    Android App Development
    Microsoft SQL Server Programming
    API Development
    MySQL Programming
    Java Servlet API
    JavaScript
    Java
  • $63 hourly
    A self-taught, purposeful, and enthusiastic software engineer with 8+ years of practical experience, specializing in Java, Android, Kotlin, automated testing, Team Leadership, and Agile methodologies. I head the Android department in New Line Technologies and my responsibilities include developing and supporting software, communication with customers, mentoring subordinators developers. I have extensive experience in * the independent development of Android projects from scratch to app release on Google Play. * e-commerce projects. * multi-media projects: live video streaming (using RTMP, UDP), video processing in real-time, video post-processing. * using devices hardware: WiFiDirect, Bluetooth, magnetometer, GPS. * work with a Bitcoin protocol, a Dash protocol, and a Bitcore wallet service/client. * large projects with globally distributed teams. * mentoring, code refactoring, troubleshoot, optimize, and performance tune. In only a year and a half, I become the Android team leader due to my passion for software development and my skills in solving challenging tasks. In my spare time, you can find me in a gym squatting with a bar, playing with my son, or reading self-improvement books.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    User Authentication
    In-App Purchases
    Android
    User Profile Creation
    Smartphone
    Kotlin
    Firebase
    Tablet
    Native App Development
    Java
  • $50 hourly
    20 years experience in Java Full stack development using design patterns, UML, full development lifecycle. I design and implement projects from the ground up using different technologies. Very quick to learn and work with new technologies. Good at problem solving and designing a good solution for any the given project. Self-motivated and hard working. Even though I am new to UpWork, I have been working remotely for clients for the last 15 years. Technologies used: - Databases: MySQL, Postgress, H2, Derby, Oracle, Sybase, MongoDB - Backend-coding: Java, J2EE, JPA, JTA, JMS, JavaMail, JAXB, XML, SOAP, RESTful Webservices, Spring-boot, JUnit, Spring Framework, Spring MVC, JSON, Micro services - Application Servers: JBoss, Weblogic, Glassfish, Payara - Front-end: HTML, CSS, Bootstrap, Javascript, JSP, Servlets, JSF, JavaFX, Swing, Thymeleaf, JQuery - Other: MQSeries, Git, Maven, Gradle, BitBucket, JIRA, Confluence, Ant, Docker,Jenkins - Amazon EC2, Elastic Beanstalk, Amazon RDS, S3, SES,ECS
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    RESTful Architecture
    MySQL
    Java
    HTML5
    Spring Boot
    Spring Framework
    Bootstrap
    Spring Data MongoDB
    JavaScript
    Microservice
  • $50 hourly
    I specialize in developing Java web applications using Spring framework. From RESTful Web services to narrowly specialized apps for text recognition and other enterprise tasks. Both front-end and back-end. Also, I can design a relational database using any system you want. Skills: - Java - Spring Framework - Spring Boot - Angular JS - Vue.js - Vaadin Framework - JAX-RS - Hibernate - JSP - Freemarker - Thymeleaf - HTML/CSS - JavaScript - jQuery - Bootstrap - Tesseract OCR, Nicomsoft OCR - MySQL, PostgreSQL, Informix IBM SQL, SQLite, - MongoDB I have a master degree in Software Engineering from Kyiv Polytechnic Institute. As a developer, I have also taken part and won large number of hackathons.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Hibernate
    HTML
    Vaadin
    CSS
    Java
    JavaScript
    Spring Framework
    Jakarta Server Pages
    SQL
  • $46 hourly
    I am a tech enthusiast and Software Engineer with +7 years of experience in several fields. - Front-end experience: Flutter, Angular, HTML, CSS, Android - Back-end experience: Firebase, Java, Node.js, C#, Ruby on Rails I am the co-founder of a Flutter Agency (SmartUp Software) in which we provide custom software development and staff augmentation services, having developed and deployed 10+ apps/webs. I developed an award-winning social project called "Berrinche" whose main purpose is to help parents and therapists of those with ASD to discover the causes of disruptive conduct and how to treat them.
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    pandas
    Microsoft Power BI
    Python
    Dart
    In-App Search
    Node.js
    Ruby on Rails
    CSS
    HTML
    Java
    C#
    Android
    Angular
    JavaScript
    Flutter
  • $50 hourly
    Full stack developer with lots of experience in Grails, Java, J2EE, Hibernate, Spring, Struts, SpringBoot. Professional and academic background on architecting and building Multi-Tenant Software as a Service. Over the last 11 years, I have worked on variety of projects including web sites/Web applications, Enterprise applications, SAAS and Cloud, Microservices, Mobile Applications My skill sets include: * Languages: Java, Groovy, SQL, C, Ruby, CSS, HTML, JavaScript, PHP * Frameworks Grails, SpringBoot, Bootstrap, Ruby on Rails, Hibernate, Hadoop, Spring, YII, Laravel * Libraries/APIs Java Collections, jQuery UI, jQuery, JAX-RS, Google Gson, JavaMail, Amazon API, Asterisk-Java, Selenium, HTMLUnit, Jsoup * Databases: - Relational: Mysql, PostgreSQL, Oracle, DB2; - NoSQL: Redis, Memcached, SimpleDB; In my case, I enjoy working with small businesses and individual decision makers to provide architectural and custom business solutions that help my clients resolve mission-critical problems, grow their business, and improve their revenue stream and profitability.
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    Twitter/X Bootstrap
    Asterisk
    J2EE
    JDBC
    Grails
    jQuery
    Hibernate
    Apache Groovy
    Spring Framework
    Java
  • $16 hourly
     Able to Help in QA Manual and Automation and Project Management Profile Overview  I have been a professional Automation Engineer for nine years; I have experience in both Manual testing and Automation Testing.  Availability 24*7 on Skype or Phone  Single women freelancer  Good Knowledge of agile and Scrum methodology  Good Experience working with large remote team Application Tested  eCommerce Application(Magneto,WordPress,OpenCart and etc)  Game Application,  ERP Application,  Mobile Application and Game  Facebook Game  Healthcare application  Travel Domain  Social Networking website  WordPress website (Front end and Backend),  WordPress Plugin,  WordPress Theme  Server Testing  Magento  508 compliance Testing  HTML and CSS validation  API Testing Type  Manual Testing  Functional Testing  Usability Testing  Regression Testing  Integration Testing  Compatibility Testing  Database Testing  Beta Testing  Security Testing Automation Testing  Functional Automation Testing:HP-QTP, Selenium and Rational tool  Load Testing:HP Loadrunner,jMeter,Silkperformer  Security Testing:IBM-Appscan,HP-Webinspect,ZAP Proxy  Test Management Tool: JIRA,Mantis Forgbugz,Assembala,Asana,Teambox and Readbooth  Compatibility Testing: Browserstack  A/B Testing: Google Analytics, Optimizely Project Management  Test case  Test Plan  Use Cases  All Checklist Design  WireFrame Design  Requirement analysis document design  User Manual Design  Able to manage development and Testing Team Devices available for testing  Windows XP(32bit,64 bit )-Browser IE(7,8,9) ,Firefox, Chrome,Safari  Windows 7 (32bit, 64 bit)-Browser IE (9,10,11) ,Firefox Chrome,Safari  Windows 8(64 bit)-Browser IE(9,10,11),Firefox Chrome,Safari  Windows 8.1(64 bit)-Browser IE (9,10,11),Firefox Chrome,Safari  Windows 10(64 bit)-Browser Edge,Firefox Chrome,Safari  MAC OS X 10.10(64 bit) Yosemite –Browser Firefox ,Chrome,Safari Mobile and Tablet  Samsung Galaxy Tab 2, Tab 4  Android Mobile (2.3,3.1,4.1,4.0.2,4.4.4.5.1)
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    Functional Testing
    Cucumber
    Appium
    Mobile QA
    Selenium WebDriver
    MySQL
    Jenkins
    Java
    Manual Testing
    API Testing
    Selenium
    Git
    Continuous Integration
    Automated Testing
    Azure DevOps
  • $55 hourly
    Enthusiastic, talented Senior Software Engineer with excellent programming skills, strong problem-solving abilities, quality-driven and customer-focused. Passionate not only about technology but also about applying it to improve people’s lives in new and innovative ways. Experienced in handling the entire software development life cycle, and used to working with a wide variety of technologies. A constant learner who motivates their peers. Self-motivated, positive, proactive and pragmatic, communicative and collaborative, and ready to take responsibility and ownership. EXPERTISE • Strong experience with Python, Go, Java, C, C++ and Lua; • Good Knowledge of Ruby and Js; • Solid experience with object-oriented design, and design patterns; • Experienced with UNIX operating system, including Linux for development and basic administration; • Familiarity with databases such as PostgreSQL, Oracle, MySQL and PL/SQL; • Experienced with OpenGL, 3D graphics, and ima​ging; • Great Computer Vision and OpenCV experience; • Good experience working with GUI development such as QT, Swing, and IUP; • Familiar with Web development: J2EE, Spring MVC, Tomcat, JSP, Servlets, JSF, HTML, CSS; • Good Knowledge with Multi-threaded and Client- Server programming; • Strong experience in design, unit testing, reviews, system testing, and requirements; • Experienced with all phases of product development lifecycle; • Experienced with source control systems like CVS, Subversion, JIRA, Buildbot and Hudson; • Familiar with agile methodologies as well as software planning and estimation techniques; • Strong commitment to life-long learning, enjoying teaching and mentoring; • Team oriented, encouraging the use of conventional procedures, practices, and tools; • Excellent written and verbal communication skills (English and Portuguese).
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Web Development
    Web Application
    CSS
    HTML5
    AngularJS
    PHP
    JavaScript
    HTML
    Golang
    WordPress
    Ruby on Rails
    Machine Learning
    Computer Vision
    Data Scraping
    Java
  • $75 hourly
    Hello there, I'm Gaurav ✅ *Mobile development Expert* ✅ *Kotlin/Android, Flutter and React Native* ✅ *Developed and delivered apps with an overall rating of 4.8+ rating. and thousands of downloads* ✅ *Great communicator* ✅ *Adaptable to any time zone* ✅ *Fullstack enthusiast* I have been developing native Android apps for more than 8 years now. I have worked on different stages of mobile development - developing, architecting, and designing apps from scratch, migrating existing apps with the old codebase to use the modern android development approach, and updating popular apps by adding new features to the same in a modular and scalable way. Specialize in: * Creating timely deliverables * Architecture implementation * Third-party library/API integration * Ability to convert mockups to a functional app with attention to detail Skills : Android, Java, Kotlin, MVVM, Android architecture components, Reactive programming (RxJava/RxKotlin), Dependency Injection (Koin), Backend API integration (Retrofit2/Okhttp), Node.js, Express, Mongo, React.js, Php/MySql, Third-party API integration (Twilio, Stripe, Social Apps, etc), Material Design, Git. I am looking forward to working with you. Regards Gaurav Sarma
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    ChatGPT
    Chat & Messaging Software
    A/B Testing
    Flutter
    Android SDK
    Android App Development
    Push Notifications
    Mobile App Development
    Map Integration
    Material Design
    Android Studio
    Android
    Java
    Firebase
    Kotlin
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