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Hire the best Java Developers in Doha, QA

Check out Java Developers in Doha, QA with the skills you need for your next job.
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  • $65 hourly

    • 5.0/5
    • (6 jobs)
    - I am working on information technology field more than 13 years with strong analytical skills, high problem solving capability and deep curiosity about computer science. - An effective technical team leader, skilled in supporting all team members in organisational goals, build big systems and support customers with stable solutions. - Hands on experience on DevOPS best practices. Building own DevOPS tools for finance environment. - Through knowledge on CI/CD tools like Jenkins, Jira/Confluence, Nexus, DataDog, Sentry, Docker, K8s, Istio, Ansible, Terraform. - Thorough knowledge of C# .Net/.Net Core and SQL programming concepts, SDLC, testing and debugging methods, system and database design and implementation, web/desktop application development. - Proficient in Object oriented programming such as C#, Kotlin, Java, Phyton as well as experience with Oracle SQL, ASP. NET, MVC, Web API design, Restful and WCF services - Strong understanding of HTML, CSS, JavaScript, Angular (4-7), design and architectural patterns - Good hands-on experience on Source Code Management tools like Git and TFS - Strong understanding of micro service architecture. - Knowledge of major cloud service providers like Google, AWS
    Featured Skill Java
    Kotlin
    Jira
    AWS Application
    API Development
    Django
    Apache Kafka
    Computer Science
    DevOps
    .NET Framework
    Database Architecture
    Docker
    Git
    Ansible
    Kubernetes
  • $30 hourly

    • 5.0/5
    • (39 jobs)
    As an experienced senior Mobile App Developer, I bring over 5 years of expertise in Flutter, Android, iOS, and Back-End development. With a portfolio of successful projects for various agencies, companies, and clients as a Freelancer, my focus is on delivering high-quality Native Android, iOS, Flutter, and Back-End Development solutions. I have a strong track record in developing eCommerce mobile applications, and over a decade of experience in creating web, mobile, and tablet user interfaces from both creative and analytical perspectives. With the ability to plan, budget, and manage the entire site or app creation process from start to finish, I have been a successful freelancer for almost 5 years, working for many well-known digital agencies. I am also a WordPress web development expert. I'm Expert in ChatGPT & OpenAI Integration. -ChatGPT 3, 3.5-turbo, 4.0 -Midjourney -Stable Diffusion -OpenAI Dalle 2 If you're looking for a skilled and experienced developer to work closely with on your next successful project, I encourage you to take advantage of my skills via Upwork.
    Featured Skill Java
    Unified Modeling Language
    iOS
    Android App
    Mobile App Design
    Software Documentation
    Technical Writing
    Android App Development
    Requirement Analysis
    Flutter
    Activity Diagram
    Native App Development
    Android Studio
    Mobile App Development
    Technical Documentation
    Solution Architecture
  • $20 hourly

    • 5.0/5
    • (14 jobs)
    I'm Mobile App Developer having 5+ year experienced mobile app developer proficient in building high-quality iOS and Android applications using Swift, Kotlin, Java, and Flutter. My expertise lies in creating scalable, user-friendly, and performance-driven mobile solutions tailored to meet business needs. With a proven track record of delivering projects on time and within budget, I ensure the highest level of quality in my work. I specialize in UI/UX design, RESTful API integration, Firebase, and third-party SDK integration. My passion for staying up-to-date with the latest technologies allows me to deliver innovative solutions. Let's collaborate to bring your mobile app vision to life!
    Featured Skill Java
    Android App Development
    Gradle
    Google Analytics
    Mobile App Development
    User Authentication
    API Integration
    Push Notifications
    QR & Barcode Scanner
    Google Maps API
    Firebase
    Android
    Node.js
    Android Studio
    Native App Development
    Android SDK
  • $25 hourly

    • 4.6/5
    • (2 jobs)
    ✅ Experienced ✅ Front End ✅ Back End ✅ 4+ years of experience in full stack development. This is my first time on Upwork!! I'm a freelance Full Stack Developer that specializes in HTLM5, CSS3, JS, Python, NodeJS, PHP, and so much more. If you want me to make a page or customize a page, I'm your guy! For the past 4+ years, I've been creating sites and app for businesses and companies of all sizes. My niche is to consult with you to set up and design your page to have the best end-user experience. I have good attention to details and provide help during all steps of development until handover. What it's like to work with me: - Proper and neat code according to the modern standards. - Fast communication and reliable development. - Variety of experience that will fulfill your needs. List of my work throughout my career: - Frontend: HTML5, CSS3, JS, React, Vue, Angular, SDK, Swift, and Bootstrap - Backend: Python, Django, Gnache, PHP, Ruby, Node, and ASP - Database: MySQL, PostgreSQL, Mongo, and Casandra - Git, Slack, and more!
    Featured Skill Java
    Data Science
    Data Analytics & Visualization Software
    React
    Back-End Development
    Front-End Development
    Python
    NFT
    Web3
    Web Design
    Responsive Design
    SQL
    HTML5
    CSS 3
    Web Development
  • $400 hourly

    • 0.0/5
    • (0 jobs)
    * Experienced senior SAP consultant and certified project manager with expertise in multiple SAP modules, including HCM, BI, PI, DBM, SD and MM. * Holds several SAP certifications, including:- * SAP Activate Project Manager * Fiori System Administration * Fiori Application Developer * Cloud Platform Integration * ABAP for SAP HANA 2.0 * ABAP with SAP NetWeaver 7.02 * Product Support Knowledge 2021 accreditation. * Completed a Bachelor of Technology degree with First Class in Computer Science & Engineering. * Possesses 10+ years of experience in the IT industry and can work efficiently in high-pressure environments. * Fluent in spoken and written English, Hindi, Malayalam, and has a basic understanding of Arabic. Specialties: * SAP Activate, Agile and SCRUM methodologies * FIORI and HANA development * ABAP/4 programming * Mobile app development using SwiftUI * Proficient in programming languages including C++, C, Java, JavaScript and HTML
    Featured Skill Java
    Computer Science
    Microsoft Office
    Disaster Recovery
    Cloud Computing
    Database
    SAP BASIS
    Apple Xcode
    Computer
    ABAP
    JavaScript
    Agile Software Development
    Agile Project Management
    macOS
    Tech & IT
  • $40 hourly

    • 0.0/5
    • (0 jobs)
    Professional Synopsis * A technology-driven professional with 15 years of cross-cultural experience. Presently working as ECM Architect with 13 years of relevant experience in OpenText Solutions. * Hands-on experience in implementing Enterprise Information Management System with Engineering & Construction, Maritime and Logistics, Insurance and Re-Insurance, Real Estate, Energy, Banking, and Judiciary departments. * Involved in more than 12 successful ECM implementation projects. * Deft in requirement gathering, system analysis, solution design, implementation, customization, integration, and technical support. * Experience in pre-sales activities and product development (Mannai Correspondence Tracking System) * Sound working experience in practicing project management using Agile and Scrum methodology. * Possess excellent interpersonal, communication, and consultancy
    Featured Skill Java
    SaaS Development
    Cloud Application
    Front-End Development
    PostgreSQL
    MongoDB
    Oracle PLSQL
    .NET Framework
    SQL
    Node.js
    Web Application Development
    Microsoft SharePoint
    OpenText
    API Development
    Document Management System
  • $80 hourly

    • 0.0/5
    • (0 jobs)
    Redhat Fuse | Apache Camel | ESB | Middleware Integration Developer | Advance Java | Python | Redhat 3Scale API Management | IBM Websphere MQ | Java | SOA
    Featured Skill Java
    Spring Boot
  • $40 hourly

    • 4.8/5
    • (6 jobs)
    Professional Profile I am a seasoned Android Developer with six years of extensive experience, currently serving as an IT Consultant at Qatar Airways through KBC Technologies. My professional journey has equipped me with a diverse skill set and a profound understanding of the latest tools and technologies in Android development. Key Skills: Languages: Kotlin, Java, Swift UI/UX: Proficient in creating intuitive and visually appealing user interfaces. Architecture: MVVM, MVC Database: Room DB Networking: Retrofit2, Gson Dependency Injection: Hilt, Dagger Frameworks: Android Jetpack, Material Design Professional Experience: In my current role at Qatar Airways, I am actively engaged as an IT consultant, leveraging my expertise in UI/UX, back-end development with native Java/Kotlin, and familiarity with the latest tools and technologies. Notably, I've been responsible for optimizing performance, collaborating with cross-functional teams, and ensuring the timely delivery of high-quality applications. Previous Experience: During my tenure at Hazel Mobile, I played a pivotal role in leading the development of numerous successful Android applications for diverse clients. My responsibilities included collaborating with product owners, designers, and developers to design and implement features, ensuring optimal performance, and guaranteeing the timely delivery of applications. Expanded Skill Set: iOS Development: Proficient in Swift, with hands-on experience in iOS application development. Game Development: Extensive experience in developing mobile games, contributing to a well-rounded skill set. ASO and SEO: Expertise in App Store Optimization (ASO) and Search Engine Optimization (SEO) strategies to enhance app visibility. AI Experience: Knowledge and practical experience in Artificial Intelligence, bringing innovation to application development. Collaborative Leadership: As a Senior Android Developer, I am committed to staying abreast of the latest trends and advancements in Android development, ensuring that the applications I develop are both cutting-edge and efficient. Additionally, I am dedicated to sharing my knowledge and mentoring junior developers within my team. I am passionate about contributing to the dynamic field of mobile application development, and I look forward to leveraging my skills and experience in future projects.
    Featured Skill Java
    React Native
    Ethical Hacking
    App Store Optimization
    Android NDK
    Social Media Design
    UI/UX Prototyping
    Swift
    MERN Stack
    Penetration Testing
    Kotlin
    Graphic Design
    Adobe Illustrator
    Adobe XD
    Figma
  • $10 hourly

    • 0.0/5
    • (0 jobs)
    Highly skilled and experienced Data Analyst with expertise in analyzing and interpreting complex datasets across various domains, including business, finance, research, and technology. Proficient in data visualization, statistical analysis, and predictive modeling. Strong problem-solving skills and the ability to translate data insights into actionable business strategies. Adept at using tools such as SQL, Python, Power BI, and Excel to drive data-driven decision-making.
    Featured Skill Java
    React
    Mobile Angular UI
    HTML
    DevOps
    Integration Framework
    Integration Testing
    Python
    PHP
  • $20 hourly

    • 5.0/5
    • (2 jobs)
    "Transforming Ideas into Seamless, Scalable Apps" Hi there! I’m a Senior Flutter Developer with 5+ years of experience and a strong corporate background specializes in crafting innovative, secure, high performance and user-friendly applications for Web, Android, and iOS platforms. Beyond app development, I’m also a Full-Stack Specialist leveraging expertise in frontend JavaScript frameworks (Next.js) and backend development (Express JS, NestJS, Spring Boot). I don’t just build apps — I create digital experiences that solve real-world problems and drive business growth. 📱 I build Flutter web and mobile apps that bring your ideas to life — fast. 🔧 Full-Stack Expertise — experienced in backend development and Javascript frontend frameworks. 👨‍💻 Passionate coder for over 5 years. 📈 10+ successful Flutter apps delivered for corporates, small businesses, and startups. 🌍 Fluent in English 😊 Why Work With Me? 🔹 Proven Expertise: I've contributed to multi-million-dollar projects, including corporate banking platforms and large-scale e-commerce solutions. From ideation to deployment, I handle every stage with precision. 🔹 Built for Scale: I design apps that grow with your business, ensuring robust performance and scalability. 🔹 Secure by Design: With hands-on experience in corporate environments, I prioritize top-notch security and compliance, perfect for industries like banking and finance. 🔹 Client-Centric Approach: I work closely with you to understand your goals, ensuring the final product aligns perfectly with your vision. What I Offer ✅ Frontend Excellence: Flutter, JavaScript frameworks like React.js, Vue.js, and Angular for stunning, user-friendly interfaces. ✅ Backend Development: Node.js, Express.js, and REST API design for scalable, high-performance backends. ✅ Cross-Platform Apps: Building Web, Android, and iOS apps using Flutter to ensure consistency and efficiency. ✅ Advanced Integrations: Payment gateways (Stripe, PayPal, Google Pay), push notifications, and real-time updates. ✅ Cloud Solutions: Firebase, AWS (S3, Lambda), and Google Cloud for reliable app infrastructure. ✅ Agile Delivery: Efficient project management and iterative development for on-time results. Sectors I have worked on: ✅ Banking and Finance ✅ Flight Ticketing ✅ Social Media/ Social Commerce ✅ E-Commerce ✅ Food Delivery ✅ Event Ticketing Sample Areas I Have Worked On: ✅ Payment Integrations including secure banking payment gateways ✅ Social Media Features: Video/photo feeds, stories, likes, and sharing ✅ Media Editing: Imgly for video and photo editing ✅ Live Video Sharing: Real-time video sharing using Agora and ZegoCloud ✅ Messaging: Firebase, SocketIO ✅ Real-Time Communication: Video and voice calls powered by Agora and ZegoCloud ✅ App Analytics: Firebase Analytics, Google Analytics, and AppDynamics Flutter Plugin ✅ Authentication: Phone, Social Media, Biometrics and Google ✅ Backend Development: NestJS, Spring Boot ✅ Databases: Firebase, MongoDB, PostgreSQL, MYSQL, SQL server ✅ Firebase Features: Authentication, Messaging, Analytics, Crashlytics, Storage, Dynamic Links, and Remote Config. ✅ Cloud Solutions: Firebase, AWS (S3, EC2, Lambda, VPC), Azure, Digital Ocean. ✅ Deployment & CI/CD: App Store, Play Store, Codemagic, Firebase, BitBucket, Github, GitLab, Azure, Docker My Approach I believe in building more than just apps -- I create solutions that solve problems and drive results. Here’s how I work: ✔ Holistic Development: Combining frontend and backend expertise to deliver end-to-end solutions. ✔ User-Centric Design: Prioritizing usability to ensure apps delight your users. ✔ Future-Ready Architecture: Scalable and maintainable solutions designed to grow with your business.
    Featured Skill Java
    PHP
    Docker
    PostgreSQL
    NestJS
    ExpressJS
    Node.js
    Next.js
    React
    JavaScript
    Spring Boot
    Firebase
    Flutter Stack
    Flutter
    Dart
  • $14 hourly

    • 5.0/5
    • (3 jobs)
    Experienced developer specializing in developing projects for businesses. Proficient in HTML, CSS3, PHP, WordPress, and SEO. Android Development using Kotlin I offer full project management from start to finish with a strong focus on regular communication. With a wealth of experience, I will ensure your project is not only visually stunning but also functional and mobile-friendly. Customized solutions are my hallmark, and I integrate SEO best practices to boost your online visibility. Let's collaborate and turn your web and mobile app development dreams into reality
    Featured Skill Java
    Microsoft Word
    Data Analysis
    Copywriting
    Arabic
    Content Writing
    PowerPoint Presentation
    Mobile App
    Flutter
    Web & Mobile Design Consultation
    Adobe Photoshop
    HTML
    Dart
    C++
    Laravel
  • $6 hourly

    • 0.0/5
    • (0 jobs)
    During my years of professional experience, I have accumulated extensive experience and expertise in various technologies, such as ABAP, HANA DB, JavaScript, CSS, HTML, Angular, PHP, Docker, ML (TensorFlow, Keras), and Git. My work as an Associate Developer at SAP Labs involved automating setup for SAP systems and utilizing languages like C#, Perl, Java, Bash, Groovy, Python, and SQL, showcasing my versatility. During my internships at SAP Labs and Object Automation Software Solutions, I contributed to projects related to ticketing tool JIRA and machine learning, further honing my skills. With a solid educational background and proficiency in multiple languages, I pursue my interests in Machine Learning, Data Science, and Web Development to stay at the forefront of the tech industry. My diverse skill set and passion for exploring cutting-edge technologies make me a valuable asset for freelance projects in software development and engineering. As a freelance professional, I am dedicated to delivering high-quality solutions and building lasting relationships with clients.
    Featured Skill Java
    Spring Boot
    Web Development
    Python
    Perl
    C#
  • $30 hourly

    • 0.0/5
    • (0 jobs)
    As a passionate and creative professional, I have dedicated the past 5 years to honing my skills in video editing, photography, videography, graphic design, and frontend web development. My journey began with a love for visual storytelling, and I have been fortunate to work on a diverse range of projects, from corporate videos and weddings to marketing campaigns, UI/UX design, and graphic design projects. My expertise lies in creating compelling visuals and user-friendly digital experiences that effectively communicate messages and resonate with audiences. I thrive on new challenges and am always eager to collaborate on exciting projects.
    Featured Skill Java
    Landing Page
    Custom Web Design
    Figma to Webflow Plugin
    CSS
    HTML
    Front-End Development
    Website
    Web & Mobile Design Consultation
    Web Application
    Web Design
    Figma
  • $12 hourly

    • 0.0/5
    • (0 jobs)
    - 6+ Years of experience as a Java Full-Stack Developer involved in designing, developing, and maintenance of Web Applications. * Working experience with Angular, ReactJS, JavaScript, HTML5, CSS3, PrimeNG and Bootstrap 4. * Working experience with Java, Spring Boot, RESTful Web Services, Microservices, Hibernate, Docker, GIT, Maven, Oracle SQL Developer, PostgreSQL, and MySQL. * Capable of learning new technologies and easily adjustable for new environments. * Ability to work both in team and individual environment.
    Featured Skill Java
    Requirement Analysis
    Software Development
    Jenkins
    GitHub
    Hibernate
    Spring Boot
    Oracle PLSQL
    MySQL
    Angular
    Web Application
    Web Development
  • $30 hourly

    • 0.0/5
    • (0 jobs)
    Detail-oriented software engineer proficient in Laravel and PHP, with hands-on experience in building REST APIs, using Eloquent ORM for efficient database interactions, and implementing robust authentication and authorization systems. Skilled in creating secure, scalable back-end solutions that support complex application requirements. Additionally experienced in Angular, React, HTML5, CSS, Tailwind, JavaScript, TypeScript, and Python. Fluent in English, Dari, and Pashto. allowing for effective communication in diverse environments. Committed to delivering responsive, user-friendly applications while staying updated with industry trends.
    Featured Skill Java
    Database Design
    HTML
    CSS 3
    SQL
    Web Design
    Software
    Python
    Time Management
    Communication Skills
    Web Development
    Product Development
    Web Application
    International Development
  • $40 hourly

    • 0.0/5
    • (0 jobs)
    Career Objective I am a motivated Computer Engineer with expertise in IT support, software development, networking, and embedded systems. Skilled in Salesforce, data analysis, and Python development, with a strong foundation in microcontrollers, digital circuits, and system optimization.
    Featured Skill Java
    Network Administration
    English
    Arabic
    Operating System
    Gaming
    SAP
    Salesforce
    Python
    IT Support
    Office 365
    General Transcription
    Company Research
    Data Entry
  • $3 hourly

    • 0.0/5
    • (0 jobs)
    Hello! I am a passionate Software Engineer with 1 year of experience in developing efficient and scalable applications. I specialize in Java, Python, and Web Application Development, crafting robust solutions that meet clients' unique needs. Skills & Expertise: ✔ Java & Python Development ✔ Web Application Development ✔ API Integration & Backend Development ✔ Database Management (MySQL, PostgreSQL) ✔ Frontend Technologies (HTML, CSS, JavaScript) ✔ Problem-Solving & Debugging Why Work With Me? I love learning new technologies and solving complex problems in software development. Whether it's building a full-fledged application or optimizing existing code, I bring a keen eye for detail and a commitment to delivering high-quality solutions. I am eager to collaborate with businesses and individuals on Upwork to turn ideas into functional, user-friendly software. Let's work together to build something great! 🚀 Available for freelance projects | Let's connect!
    Featured Skill Java
    DevOps
    Linux
    Cloud Application
    Agile Software Development
    Software Development
    LLM Prompt Engineering
    AI Agent Development
    Python
    Web API
    Quality Assurance
    Software QA
    Product Development
    Web Application
    Web Development
  • $25 hourly

    • 0.0/5
    • (0 jobs)
    iam graduate from top university in sudan major at computer sciense , i can develop mobile application native and crossplatform build full stack web application using python .
    Featured Skill Java
    C++
    Mobile App Development
    Web Application
    Django
    Odoo
    Linux
    Python
  • $30 hourly

    • 0.0/5
    • (0 jobs)
    Experienced Developer in the design and development of financial products having million of users. Skilled in Microservices, Frontend - React and Angular, Java, Spring boot. Hands on knowledge on working with Github, sonarqube and code coverage with unit testing. Experienced in working with Jenkins, Github CI/CD pipelines.
    Featured Skill Java
    IBM MQ
    Microservice
    SQL
    MongoDB
    Apache Maven
    Gradle
    Jenkins
    Redux Saga
    Angular
    Git
    Spring Boot
    React
    Web Application
    Web Development
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