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4.8/5
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  • $48 hourly

    • 4.2/5
    • (10 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.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Bluetooth
    JavaScript
    MySQL Programming
    Java
    Amazon Cognito
    Amazon Polly
    Amazon S3
    Kotlin
    Android
    Android App Development
  • $40 hourly

    • 5.0/5
    • (10 jobs)
    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.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    JavaScript
    TypeScript
    Node.js
    MongoDB
    NoSQL Database
    SQL
    Spring Framework
    Distributed Computing
    Microservice
    Amazon Web Services
    Java EE
    Java
  • $50 hourly

    • 5.0/5
    • (11 jobs)
    If you’re searching for a professional competitive programmer with a proven track record, and unparalleled skills then you are in the right place. I am a professional competitive programmer with 6+ years experience. Besides a strong quantitative base, I possess strong qualitative and interpersonal skills. I have teaching experience of algorithms and data structures. By hiring me, you can be assured that you will get the best possible solution implemented in your work in the shortest time possible. My skills -- Algorithms & Data structures: 🔷 All commonly used Data Structures: Arrays, Linked-List, BST, Queue, Stack, heap, B-tree, etc. 🔷 Graph theory: DFS, BFS, Dijkstra, A*, MST, SCC, Centroid Decomposition, Heavy Light Decomposition, etc. 🔷 Tree-like algorithms: Segment tree, Fenwick tree, K-dimensional tree, Centroid tree, Treap, etc. 🔷 Greedy algorithms 🔷 Dynamic programming: Divide and Conquer Optimization, Convex-Hull Trick Optimization, etc. 🔷 Searching algorithms: Binary search and Ternary search, Hashing 🔷 Time complexity analysis 🔷 And many others Backend Engineering: 🔷C++ / C 🔷Boost 🔷SQL 🔷JSON Data Science and Machine Learning: 🔷 Pytorch, Keras, Tensorflow 🔷 Regression models (Linear Regression, Logistic Regression, Regularization). 🔷 Classification Algorithms (Bays Classifier, KNN, SVM, Kernel-SVM). 🔷 Dimensionality reduction (PCA, MDS). 🔷 Decision Trees (Learning Decision Trees, Information Gain, Entropy, Gini Index). 🔷 Neural Networks (Convolutional Neural Nets, NLP). 🔷 Neural Networks optimization techniques (Drouputs, Batch Normalization, Early stopping, LR-Scheduling, Data Augmentation, Transfer Learning). Some of my achievements: ✔️ Codeforces master rank ✔️ 99.8 percentile rank on Hackerrank ✔️ IT Park Cup 5th place ✔️ 2nd place International Collegiate Programming Contest (ICPC) Quarter Finals, 2018. ✔️ IOI 2017 participant
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Coding Art
    Computer Science
    Heuristic Evaluation
    Big Data
    Performance Optimization
    Algorithm Development
    Linear Programming
    Mathematical Optimization
    Data Structure
    C++
    Java
    Python
  • $45 hourly

    • 5.0/5
    • (60 jobs)
    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
    In-App Purchases
    Social Media Account Integration
    Camera
    Firebase
    Mobile Programming
    Mobile App Development
    Core Java
    Java
    Android App Development
    Android
  • $25 hourly

    • 5.0/5
    • (75 jobs)
    I've completed 2000+ projects till now. Most of the projects are of mobile & desktop software development. I worked with most renowned companies of US and UK. I have 5 years of experience in Java, Python & Android Development. I'm also working as a Technical Team Lead in Apricot Technologies.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Data Structure
    HTML
    Apache Maven
    JavaFX
    C++
    Algorithms
    Unified Modeling Language
    Python
    Java GUI
    WordPress
    Android
    Java
    Mobile App Development
    Website Development
  • $60 hourly

    • 5.0/5
    • (52 jobs)
    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
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Android Studio
    Native App Development
    Firebase
    Java
    Android App Development
    Kotlin
    Android
    Mobile App Development
    SQLite
    Camera Operation
    NFC
    Mobile App
    Android NDK
    Android SDK
    OpenCV
  • $50 hourly

    • 4.9/5
    • (8 jobs)
    Self-taught software developer with more than 6 years of professional experience. Mostly worked on mobile application projects using Java/Kotlin and Swift programming languages. Experiences also include creating REST APIs, working with database technologies, providing Cybersecurity consultancy, end-to-end Mac and Windows Application development and UI/UX Design using Adobe Tools. Subjects of Interest Native Mobile Application Development, Cybersecurity, Software Design Patterns & Architecture, Financial Technologies, Game Development.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    RxJava
    iOS Development
    Android SDK
    Firebase
    iOS SDK
    Android App Development
    Camera
    API Integration
    iOS
    Native App Development
    Android
    Swift
    Kotlin
    Java
  • $49 hourly

    • 4.9/5
    • (77 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.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Micronaut
    Vert.x
    Apache Cassandra
    Spring Framework
    JUnit
    Hibernate
    JBoss
    PostgreSQL
    Apache Tomcat
    Java
  • $45 hourly

    • 5.0/5
    • (16 jobs)
    Java\Kotlin\Android and Groovy\Grails developer. Work on HTML5 projects sometimes. As a hobby, I learn neural networks.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    PyTorch
    Python Pandas
    Python
    Gradle
    HTML5
    Java
    Android App Development
  • $20 hourly

    • 5.0/5
    • (40 jobs)
    I have 14 years of software development experience overall. • Motivated and reliable Android Developer with an excellent work ethic and programming language knowledge base • Able to build applications from concept to final product to the client's or project's specifications • Experienced in object-oriented programming; development, testing, and debugging code; design UI • Able to work well independently or as part of a professional development team in order to meet and achieve project goals I have experience with: - Java - Kotlin - Android SDK - Android architecture components - Google Play Services - Firebase, Parse, Backendless, Cloudinary SDKs - Retrofit - RxJava 2 - Dagger 2 - MVP, MVC, MVVM - Testing - UI design with Material Design - Social media integration (Twitter, Facebook, Google plus, VK) - Git
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Tablet
    Smartphone
    Mobile App Development
    Dagger 2
    Firebase
    Kotlin
    Google Apps
    JSON
    REST
    Java
    Android SDK
    Android
    Android App Development
  • $35 hourly

    • 4.7/5
    • (12 jobs)
    Incisive software engineer with a demonstrated pedigree at developing bespoke web and mobile applications that drive business efficiencies. Main focus with Java and Kotlin with experience in backend, android and front-end engineering. I have a big focus on functionality, clean code, testability and efficiency at every level of my development cycle. Also interested in architecture patterns, mathematics and algorithms. My Core Skills Include: Kotlin, Java, Android SDK, SpringBoot, Spring Cloud, Spring MVC, Ktor Server, MVP, MVVM and Clean Architecture Patterns, Dagger, Koin, and Guice, RxJava, Coroutines, Espresso, Mockito, JUnit, Exposed, Hibernate, JPA, ES6, VueJs, Git, CircleCI, TDD, CI/CD, Docker, Microservices Agile Development, Freemarker, Thymeleaf Contact me and let us talk about your projects to a successful one.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    JUnit
    Laravel
    Kotlin
    Geolocation
    Android Room Persistence
    RxJava
    Dagger 2
    Vue.js
    Java
    Android App Development
  • $45 hourly

    • 4.2/5
    • (23 jobs)
    Senior Software developer professional bringing more than 11 years in software design, development and integration. Offering advanced knowledge of Java and Javascript programming languages for web and mobile applications.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Spring Framework
    Python
    Docker
    FFmpeg
    HTML5
    Android
    Wowza Media Server
    Oracle PLSQL
    JavaScript
    Jakarta Server Faces
    Jakarta Server Pages
    Java
  • $45 hourly

    • 5.0/5
    • (67 jobs)
    Hi my name is Hirin, I am senior full-stack developer, I have been involved in programming since 2008. I have 13+ years professional experience with various programming language. I'm focused to web, server, and desktop app programming with latest tech and and very enthusiastic about creating super fast and efficient process by using multi-threading or concurrency. 👉Following are my main programming languages:👇 ✅ JAVA ✅ C# ✅ PHP ✅ Html & JavaScript ✅ Dart ✅ Go Lang ✅ Python ✅ Asp. Net ✅ Etc 👉Databases:👇 ✅ MySQL ✅ MSSQL ✅ PostgreSQL ✅ MongoDB ✅ Redis 👉Frameworks and Others:👇 ✅ Laravel ✅ VueJS ✅ Inertia ✅ ExpressJS ✅ Flutter ✅ Multi-threading Programming Programming is not just my job, but is part of my life because I really super love it. Don't hesitate to use my services to solve every your programming issues (creating from scratch, continue existing, or convert existing). Thank you for visiting my profile
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Payment Gateway Integration
    Database Development
    Custom PHP
    Stripe
    Flutter
    NoSQL Database
    Node.js
    .NET Framework
    C#
    PHP
    JavaScript
    Java
    Database Programming
  • $25 hourly

    • 5.0/5
    • (4 jobs)
    Hey there! 👋🏻 👨🏼‍💻 I'm an experienced Full Stack Developer capable of developing web applications from start to bottom. 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 🍃 I can also offer services in terms of scripting/automation (for example crypto trading bots, data scrapers, social media channel automation, etc.) as well as security-related consultancy. 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
    MongoDB
    PostgreSQL
    Linux
    React
    JavaScript
    Node.js
    CSS
    HTML
    Python
    Java
  • $20 hourly

    • 4.4/5
    • (10 jobs)
    Innovative Android Developer with 2+ years of experience designing, developing, testing, and maintaining Android applications.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Object-Oriented Programming
    Android SDK
    Algorithm Development
    Software Testing
    Data Structure
    C++
    Kotlin
    Java
    C
    Firebase
  • $25 hourly

    • 4.8/5
    • (22 jobs)
    I am a mobile developer with about six years of experience. I took part in several projects, such as an application for venues and special offers search, a business application for traders, an application for a delivery company, an application for taxi drivers, a live video broadcasting application, audio/video player, downloaders, web-browser. My primary skills are: Java Core, Android, Swift, iOS, Design Patterns, Multithreading, Networking, App Core, RxJava, SQL, SQLite, REST, JSON, Google API, Social Networks API, Fragments, XML, Kotlin, Admob, monetization, Proxy, VPN Services
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    User Authentication
    Map Integration
    iOS
    Mobile UI Design
    GUI Design
    Swift
    Payment Processing
    SQLite Programming
    Google Maps API
    Kotlin
    Android
    Java
  • $30 hourly

    • 4.9/5
    • (9 jobs)
    I am Osemwingie Oshodin, I am a value driven mobile engineer. I am proficient in Kotlin, Kotlin multiplatform, android architecture, Jetpack libraries, backend development using Ktor, and building cross-platform applications using Flutter I have successfully deployed multiple mobile applications built from scratch to the google play store. I have also contributed to many projects by working in a team. I have gone on to further my skills in software engineering by taking relevant courses and acquiring a google associate developer certificate. 
I am excited about learning new technologies. My utmost priority is to satisfy my clients by delivering optimal products that satisfy the expectation of the end-users. In my free time, I like to watch sports and listen to music.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    JetPack
    Model View ViewModel
    Flutter
    Java
    Kotlin
    Android App Development
    Android
  • $75 hourly

    • 5.0/5
    • (23 jobs)
    I'm Top Rated native Android developer (9+ years of experience) and fluent English speaker. My strong point is in creating and maintaining complex Android apps from an idea to publishing in the stores. Skills and technologies which I'm an expert at: — Kotlin/Java — Android SDK — Git — MVP/MVVM/MVI — RxJava/Coroutines — Dagger2/Hilt — Retrofit/OkHttp — Sqlite/Room — Firebase — OOP/SOLID/DRY I have 8k+ hours of work at Upwork and experience in a broad variety of apps, which I hope you'll find useful in your next project.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Git
    Android UI Design
    SQL
    Android App
    Android Room Persistence
    Android SDK
    English
    Mobile App Development
    Android Studio
    Kotlin
    Smartphone
    Java
    Android
    Android App Development
    Gradle
  • $75 hourly

    • 4.9/5
    • (57 jobs)
    10+ years of developing Android applications, leading teams, and delivering successful products. I'm providing high-quality apps for mobile, Android TV, Android Auto, and Android Automotive OS. Professional skills and technologies: • Fluency in Java and Kotlin • AndroidX/JetPack, Compose, Leanback • MVVM/MVP/MVI • Experience in RESTfull APIs, OAuth • SQLite/Room, Realm • ExoPlayer, optimization and performance tuning, offline playback, caching • Creating media apps for Android Auto and Android Automotive OS • Security/Encryption, biometric • Firebase Auth/Cloud functions/Database/Storage • Troubleshooting performance problems Knowledge of best practices for developing secure software, mobile application vulnerabilities, and how to prevent them. Experience in reverse engineering, static, and dynamic analysis of Android apps: • Reverse engineering private APIs • Modification without source code • Bypass SSL certificates pinning • Working with ROOT, Magisk • Xposed/LSPosed modules development • Creating Frida scripts • Build automation tools for 3rd party apps #
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Reverse Engineering
    Android Room Persistence
    Android Debug Bridge
    SQLite
    Realm Database
    Firebase
    Git
    Google Maps API
    Google Play
    JetPack
    Android
    Android App Development
    Java
    Kotlin
    Android SDK
  • $30 hourly

    • 5.0/5
    • (30 jobs)
    Android | IOS | Flutter I'm Shehroz, a versatile Mobile Application Developer with over a decade of experience in Java, Kotlin, Swift, and Dart programming. I've consistently excelled in crafting innovative solutions that stand out. My capabilities encompass both native Android & iOS platforms and extend to creating Hybrid apps using Flutter. My main focus is delivering excellent results while staying on track with project deadlines. What I do: ✅ Flutter (Dart) ✅ Native Android apps (Java & Kotlin) ✅ Native iOS apps (Swift) ✅ Mobile user interface design (UX/UI) Market segments: ✅ Fitness & Wellness ✅ Internet of Things (IoT) ✅ Smart Devices (BLE & WiFi) ✅ VPN & Security ✅ On-demand service providers (Bizzby, Handy.com, Task Rabbit, Bidvine) ✅ Ridesharing platforms (like Uber, Lyft) ✅ Healthcare ✅ eCommerce & Marketplaces ✅ Online Education ✅ Social Applications ✅ Medical Applications ✅ Machine Learning ✅ Camera Apps Hands-on Experience: ✅ Firebase ✅ Push Notification ✅ Amazon Web Services (AWS) ✅ Database management ✅ Barcode / QR code readers ✅ User management, user profile (sign in, sign up, authentication) ✅ Payment processors (Stripe, PayPal, Braintree) ✅ Payments with Credit Cards ✅ Firebase Cloud Messaging ✅ OpenVPN ✅ Wearables ✅ NFC & iBeacon ✅ GPS & Location services ✅ In-App Purchase & Subscriptions ✅ Social Networking ✅ Google Material Design ✅ Google Play ✅ App Store ✅ In-App Search ✅ Map integration I look forward to the opportunity to collaborate and bring your ideas to life. Best regards, Shehroz
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    React Native
    Firebase
    Material Design
    JavaScript
    HTML5
    Android App Development
    Gradle
    Flutter
    CSS
    iOS Development
    SQLite Programming
    XML
    Mobile App Development
    Java
  • $50 hourly

    • 5.0/5
    • (5 jobs)
    Hi, I am a full stack developer with close to 11 years of experience. I have worked with Groovy/Grails, Clojure , JavaScript along with some other languages/frameworks for building api backends, web based apps and mobile apps. I have worked on eCommerce apps, social media apps and content publishing platforms. I have considerable experience in using AWS and other clouds. I believe in doing test driven development
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Agile Project Management
    Apache Groovy
    Amazon Web Services
    Git
    ClojureScript
    JavaScript
    jQuery
    Java
    React
    Apache Groovy
    Grails
    Clojure
  • $70 hourly

    • 5.0/5
    • (20 jobs)
    I'm a senior Java and JavaScript developer with over 12 years of experience and 6 years of team lead experience Brief - most of career was developing large solutions for such customers as Vodafone, Nokia, Ericsson, Gazprom and others - confident with big data, low-latency microservices, networking, code generation/compilation - build solutions with AWS - always eager to learn new - have worked with a number or international teams - led an own team for more than 5 years in Agile way Technologies - HTTP/1.1, HTTP/2, Websocket, nginx (+lua experience), SMNP, OLAP, SOAP, AMQP, DNS, FTP/SFTP/SCP - Kafka, RabbitMQ, ActiveMQ, Zookeeper, Spark, Hadoop - AWS services, including EC2, Lambda, Redshift, S3/Glacier and others; Serverless - Java (Spring stack, security, Hibernate, Servlet, Jetty, Netty, OSGI, JAX-RS, JMS, GWT, Guava, Guice, JUnit) + maven, ant, gradle - JavaScript (Node.js, Serverless, ES6, Ramda) - Frontend JS/HTML/CSS (Angular, React, Bootstrap, Ionic, Webpack, Parcel) - Oracle, PostgreSQL, SQL Server, MySQL, Teradata, Vertica, SAP HANA, Clickhouse - Mongo, Elasticsearch, Couchbase + I've also worked as a Level 3 support engineer for a year, that's why I'm pretty much used to working directly with customer (mostly large telecom operators).
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    React
    Angular
    Elasticsearch
    MongoDB
    Database
    Amazon Web Services
    TypeScript
    JavaScript
    Java
  • $200 hourly

    • 5.0/5
    • (9 jobs)
    A highly motivated software developer and researcher. Currently, focused on AOSP and Linux embedded development with C++ and Java. Has a good knowledge of algorithms and data structures. A participant and the winner of different programming contests. Experienced with modern development tools and methodologies. Has experience with AOSP, Android-x86, Android linux kernel, embeded software development (linux, rtos), Android SDK/NDK, network (TCP, UDP, HTTP), bluedroid, bsp, etc..
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Linux
    JSON
    Android SDK
    OpenCV
    Git
    Android App Development
    C++
    Java
    Android
    AOSP
  • $55 hourly

    • 4.9/5
    • (52 jobs)
    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 Application
    Computer Vision
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    Website Development
    HTML
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    Golang
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  • $40 hourly

    • 5.0/5
    • (26 jobs)
    I can design, code, improve web and your IT infrastructure. I am a Software developer & DevOps Engineer with 5 years of experience. Don't hesitate to contact me to discuss your project. ----- “Its nice to keep you as a contact, you were one of the more competent freelancers out of india i ever hired. I'd love to work with you again” “It was pleasure to have a such a great support from your end. We were happy the way you support us in terms of fixing the errors and providing the a right solutions. Looking forward your valuable support in future also.”
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Jira
    Elasticsearch
    OAuth
    Architectural Design
    Spring Security
    MySQL
    RESTful Architecture
    Apache POI
    Spring Boot
    Jenkins
    Git
    Java
    Spring Framework
  • $30 hourly

    • 4.9/5
    • (9 jobs)
    I provide premium services to my clients, offering a hyper-responsive approach. Available Monday to Friday during standard business hours, I am committed to delivering quality products with rapid turnaround times. With over a decade of professional experience in frontend mobile app development and backend coding, I have successfully crafted a diverse range of apps and websites for clients globally. My expertise covers both iOS and Android app development, as well as seamless integration of third-party APIs and services. As a Top-Rated Plus freelancer with a strong Job Success score on UpWork, I am dedicated to delivering exceptional results. Looking forward to our future collaboration! Best, Bilal Ahmed
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Android SDK
    Cocos2d
    Android NDK
    Node.js
    Java
    C++
    Android
    Android App Development
    Flutter
    C
    Android Studio
    Kotlin
    JavaScript
  • $80 hourly

    • 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.
    vsuc_fltilesrefresh_TrophyIcon Java Python Developers
    Amazon Elastic Beanstalk
    Docker
    Hibernate
    Apache ActiveMQ
    Oracle Database
    Linux System Administration
    PostgreSQL Programming
    RESTful API
    AWS Lambda
    Java
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