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Post your Java projects on Upwork and hire expert software engineers and senior Java developers. They can create mobile applications for Android and iOS, redevelop Android widgets, modify and add new Java scripts to your custom Java software, or develop GUI applications with the Swing GUI widget toolkit. The java developers on Upwork are experienced in Java persistence frameworks (like Hibernate), web development, security or database frameworks and Java project lifecycle management tools (like Maven). They can also check, fix or add new Java classes into your Java code, or manage your software debugging, quality control software development or testing tool programming.

Java is a class-based, object-oriented computer programming language that is ideal for cross-platform application development. It comes with a library of commonly used classes and utility functions, called the Java API. On Upwork, the world’s largest online workplace, companies hire experienced Java architects and software engineers to develop all kinds of cross-platform applications, from torrent clients and media players, to helpdesk tools and mobile apps.

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Java Job Cost Overview

Typical total cost of Upwork Java projects based on completed and fixed-price jobs.

Upwork Java Jobs Completed Quarterly

On average, 489 Java projects are completed every quarter on Upwork.

489

Time to Complete Upwork Java Jobs

Time needed to complete a Java project on Upwork.

Average Java Freelancer Feedback Score

Java Upwork freelancers typically receive a client rating of 4.72.

4.72
Last updated: August 1, 2015
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  1. Roman L.

    Roman L.

    Experienced developer with various skills

    Ukraine - Tests: 12 - Portfolio: 2

    I'm skilled web-developer with 4 years of experience. I'm always interested in competition job in order to improve my skills everyday. I'm hard working, communicative developer. I'm good both in development sites from scratch and in working on existing systems which need some improvement. Looking forward to work with you!

    $20.00 /hr
    504 hours
    4.39
  2. Yug P.

    Yug P.

    QA Engineer / Tester

    India - Tests: 5 - Portfolio: 8

    Over 5+ years IT experience specialized in QA and Testing Web Service, Web based/Client server and Mobile applications. - 3 years Experience testing in Agile development model. - Diverse Industry experience in E-com, Healthcare, Finance, Transport, Social Media, Retail domains. - Experience in complete project life cycle from analysis, implementation to testing. - Excellent at understanding the Business Requirement Documents, Functional Specifications and Responsibilities on Technical Specifications. - Experience in preparing, executing and maintaining Test Plans, Strategy, Detailed Bug reporting. (with screenshots, console reports, steps) - Test Scenarios, Test Cases and creating the Traceability Matrix based on business requirements. An excellent team player with an ability to perform individually, with good interpersonal relations, good communication skills, ability to meet deadlines and coordinating multiple tasks in the project environment.

    $8.89 /hr
    209 hours
    4.70
  3. Keyur P.

    Keyur P.

    C, C++, VC++, WIN32, MFC, QT, C#.net, VB, Interactive Broker, TWS API

    India - Tests: 8 - Portfolio: 8

    Technical Lead, hands on experience of 10+ years in software development. Expertise in application development using C, C++, VC++, WIN32, MFC, C#.net, VB, DirectX , Barcode, Multithreading, Shell Script, Perl Script, Pervasive BTRIEVE, IBM Web Sphere MQ, Oracle, Sybase on Windows, Unix and Linux platforms. Expertise in the ares of Image Processing, Industrial Automation, Finance domain, Middleware & client server communication. Expert in building applications using Interactive Broker TWS APIs.

    $27.33 /hr
    383 hours
    4.69
  4. Povel Sanrov

    Povel Sanrov

    High Skilled iPhone, Android, Web Developer

    Romania - Tests: 10 - Portfolio: 6

    Over 6 years, I have developed a wide range of mobile apps and websites using Objective-C, Swift, Java, HTML, DHTML, Javascript, PHP, and MySQL including sites for startup companies and small businesses. My core competency lies in complete end-end management of a new website development project, and I am seeking opportunities to build websites from the ground up for you or your business Mobile device platform: ✔ iPhone 6 plus, iPhone 6, iPhone 5s, iPhone5, iPhone4s ✔ iPad Air, iPad4, iPad3, iPad mini ✔ Google Nexus 5, Samsung Galaxy S5, S4, S3, HTC One My skill-set: ✔ Native: iOS, Android, Windows8 (Objective-C, Swift, Java, C#), JNI, NDK (C/C++) ✔ Hybrid: PhoneGap, Xamarin, Titanium (HTML5, jQuery Mobile, C#) ✔ Web service: XML/JSON, REST/SOAP ✔ Device, Kit: Bluetooth Low Energy (BLE), iBeacon, Datzing, NFC, credit card reader, MIDI ✔ Cloud backend: Parse.com, Parse SDK, Parse REST, Parse Cloud Code, Amazon S3 EC2 AWS, Firebase, Foodie, remoteStorage, Twillio, Plivio ✔ Chat & Messaging Engine: XMPP, Jabber, OpenFire, OpenTok WebRTC, Ejabberd, Erlang ✔ Media Streaming: Wowza, SoundCloud, Red5, Icecast ✔ Video/audio/image processing: OpenCV, GPU Image, CoreAudio, EZAudio, Pitch Control, Bass, AVFoundation ✔ Vector graphics processing: SVG, SVGZ, Illustrator ✔ Video/audio streaming, codec: Wowza, Red5, H.323, MPEG-4 ✔ VOIP, Cloud Communication: Twillio, Heroku, Tokbox ✔ Speech recognition, text-to-speech, Siri, OpenEar ✔ HTML5, Ruby on Rails, PHP, ASP, JSP, C# and their frameworks ✔ MySQL, SQLite, Oracle, SQL Server, ODBC ✔ Facebook, Twitter, Linkedin, Instagram, Youtube, Pinterest, Vimeo ✔ Google Map, Foursquare, Geolocation, GPS, Open Street Maps ✔ Augmented Reality: Vuforia, Metaio ✔ Cocos2D, OpenGL, Corona, Unity3D, Box2D ✔ Game Center, In-App Purchase, RPG server ✔ iAd, Adwirl, Revmob, Admob, Chartboost, Tapjoy, Flurry, Testflight ✔ Mantis, JIRA, RedMine, BaseCamp, Huddle, Sprint.ly, Github, BitBucket, SVN ✔ Cloud services: iCloud, Rackspace, Zoho CRM, Salesforce, Azure, AWS, EC2, Dropbox ✔ Enterprise Resource Planning (ERP), Cloud POS, Warehouse Management ✔ P2P Payments: Bitcoin, Guldencoin, hivewallet, breadwallet ✔ Online Payment Gateway: PayPal, Authorize.net, Stripe, Venmo, Braintree, Payleap ✔ Mobile Game Genre: Casino Slot machine, Poker, Chess, RPG, Arcade

    $45.00 /hr
    970 hours
    5.00
  5. Zoltan Tamasi

    Zoltan Tamasi

    Software engineer

    Hungary - Tests: 18

    Software engineer with 6 years experience. I have worked in many areas, mainly in web development, both server and client side. I have the best skills in developing full stack web applications based on MEAN or Java/Spring stack. I'm an enthusiastic and conscientious coder always delivering high quality solutions and I'm able to handle complex problems with simple and well-structured code. Some highlights: Angular, React/Flux, PostgreSQL, MongoDB, NodeJs, Micro services, Java 8, Spring, Functional programming, TDD/BDD, Linux administration, Vagrant, Docker

    $20.00 /hr
    252 hours
    5.00
  6. M.noman S.

    M.noman S.

    VA for Web Developer,WordPress, PHP Joomla , CMS , Drupal HTML5, CSS3

    Pakistan - Tests: 2

    I specialize in Wordpress web development but I can also work with static HTML or PHP sites. I also have experience with Joomla and Drupal as well as forum platforms like SMF, phpBB, and vBulletin. I have set up dozens of websites for different purposes such as blogging, ecommerce, business, portfolio, membership, publishing, and niche marketing. I can set up websites from scratch. That includes updating the DNS, working with cPanel, FTP, phpmyadmin, Google webmaster tools, setting up custom emails, SSL certificates, and other site admin tasks. I can also slice and convert your existing website designs from PSD format to W3C-compliant HTML5/CSS3 page or Wordpress template. I also code email templates that are compatible with major email providers and desktop clients. I can also manage and maintain your existing sites. Tasks may include (but not limited to) updating content, basic graphic design, platform and plugin upgrades, analytics, SEO, email campaigns, and data entry. I can also manage projects. I can screen and hire other contractors and relay information or coordinate with the client and the other members of the team.

    $7.00 /hr
    814 hours
    5.00
  7. Nguyen V.

    Nguyen V.

    C/C++ Developer

    Vietnam - Tests: 7

    I am a real software engineer, I write programs for programmers, not computers. Over the last 9 years, I have developed a wide range of applications using C, C++, C#, Python, Perl, Java on Windows, Unix, Linux platform as well as developing software tools and some handy scripts. I also have some experience in the following areas: C, C++ (C++98, C++11, C++14), Bash, SQL, PL/SQL, POS, ATM protocols (NCR, ISO8583...), SMS, SMPP, SMTP, POP, SNMP, Human Interface Device (HID), VISA/MC Interface, Thales HSM, Video Processing, MPEG-2 TS, HLS, DASH, Wireshark Dissector, Subversion, Git, Clearcase, Oracle, MySQL, CVOPS framework, PyQt, Scrapy framework, OpenSSL, RSA Cryptography, HTTrack, FAT32, NTFS... I'm fast learner and keen to learn new technologies. I'm looking forward to work with you!

    $25.00 /hr
    118 hours
    4.99
  8. Hanura I.

    Hanura I.

    Web Engineer: YII Developer

    Indonesia - Tests: 1 - Portfolio: 4

    Over the last 5 years, I have developed a wide rang of website using HTML, PHP, JavaScript, PostgreSQL and MYsql. I have created application website for company profile and any project application in many companies. My core competency lies in developing new application web and customizing existing application web. when I develop application web, I usually use a framework like Yii and codeigniter etc. am seeking opportunities to build websites or customization from the ground up for you or your business. I have some experience in the following areas: SQL, Java Programming, OOP, software design and testing.

    $7.00 /hr
    52 hours
    5.00
  9. Jeffrey Luna

    Jeffrey Luna

    Software Engineer. Game Developer/Game Director

    Philippines - Tests: 4 - Portfolio: 10

    For over 5 years I had been coding through Java, from core java to enterprise java I focused more on Java EE, I had been using MySql, Spring, Maven, Jquery, Javascript, CSS, HTML, XML mappings and other dependencies for enterprise applications. However I have shifted to being a full pledged game developer, almost all of the games I made are from scratch, some made with a team but most of the time I design the structure and mechanics given the requirements. I can assure you that I will be an asset whether maintenance or development of a project. All of my portfolio projects are made from scratch. Continuous development and maintenance projects are listed as other work experience. I am very skilled in creating game logic, story and game mechanics including balancing and advanced physics and on complex behaviours (AI's). I currently have my own team with animators. We are available to work individually or as a team as needed.

    $20.00 /hr
    132 hours
    4.81
  10. Amandeep Singh

    Amandeep Singh

    Sr. Android Application Developer / IOS Developer

    India - Tests: 8 - Portfolio: 25

    "Best Quality Service within deadline & dash; Makes you Smile" Young, energetic and result oriented Professional Smartphone App developer, developing Native iOS(iPhone/iPad) & Android Apps & Games, Phone gap, Mobile website and Back-end last 3+ years. Providing Customer Satisfaction by offering the best quality within time frame is my main discipline and our objective is to make a positive impact on clients. I am aiming at building highest quality apps which should be more competitive than others in the market. Equipped with most up-to-date technologies and always keep a sharp eye on the trends of markets. I am looking for long term relationship, not just looking for quick bucks. I am completely dedicated towards our work. I have strong expertise in the followings major area of developments: 1. Apps + Games ✮ Social Networking Apps ✮ Chat Apps ✮ Dating Apps ✮ Health & Fitness Apps ✮ Food & Drink Apps ✮ Navigation Apps ✮ Photo Editing & Sharing Apps ✮ Photo & Video Apps ✮ Travel Apps ✮ Utility Apps ✮Trivia Quiz Games. ✮ Interactive Book and Magazine Apps. ✮Augmented Reality Apps. ✮ Games 2. Frameworks, APIs ✮ iOS, Android, jQuery ✮ Web Service ( PHP, JSON, XML, SOAP, Parse, Google App engine framework) ✮ In App Purchase ✮ Push Notification ✮ Face book API, Twitter API, LinkedIn API, Google+ API ✮ Google API,GeoLocation, Instagram API, Youtube API ✮ Advertisement ( Ad Mob, Ad whirl, RevMob, Chart Boost, Google Ad) ✮ Flurry, Test flight ✮ MySQL, SQLite, HTML ✮ Cocos2D, Box2D ✮ Game Centre I am always available to provide my clients. - Excellent Support. - Effective Communication. - Commitment to Quality. After getting project, I will maintain frequent communications throughout the project in order to ensure I am directly on track with your specifications, and deliver on time. I have latest apple products for application testing i.e. iPhone 5S, iPad 4 with Retina Display and iPod Touch 4th Gen, Samsung S4, S3, Nexus 5. So that our client will get the full-furnished product. You will get perfect end result of work on time and you will be satisfied with the end product. I am always ready for you, always available on Skype to chat and you can contact me any time.

    Groups: Application Developers Alliance

    $33.33 /hr
    2,186 hours
    4.89