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Freelance Java Developer - Adrian Segui
Freelance Java Developer5.0 (140 reviews)
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Working in the IT sector for more than 10 years. With over 10 -years of freelancing and professional experience taught me all kinds of frameworks and languages, ranging from React, Angular, Vue, Node js, Express js, React Native, Redux, Rx JS, JavaScript, Typescript, WordPress, PHP, MySQL, MongoDB, Firebase, Sqlite, Postgresql, ES5+, Python3, Machine Learning, Deep Learning, RNN, CNN, Android Java/Kotlin, iOS Swift/SwiftUI, C/C#/C++, .Net, Assembly, VBA, VB, Excel Macro, Java, Spring Boot Micro-services, R, Shiny, STATA, MATLAB, Google Sheet, App Script, Bubble io, etc. Over my long career, I have come across all kinds of challenges and gained vast experience with different kinds of industries like portals, medical industry, perception exercise, employee management, etc. I have good experience with frontend development using React JS along with Typescript, Firebase, GraphQL, React Native, Native Script, React, Material UI, Ionic, Node.js, Web Sockets, and real-time communication. I have also worked on containerization technologies like Kubernetes, Docker, AWS, GCP, Azure etc. I am very good with backend technologies as well like Java Spring boot, Microservices, MySQL, Postgres, Elasticsearch, AWS/Google integration. Please contact me to get the result done in a professional way.

Freelance Java Developer - Alan Santos
Freelance Java Developer5.0 (21 reviews)

*Need a boost in your skills or results?* *Read my profile before hiring.* I bring expertise in delivering high-quality projects and results using a wide range of technologies and tools: - *Programming & Development*: - *General Purpose Languages*: Python (Machine Learning, CNN, Keras, LSTM, PyTorch, Pandas, NumPy), C/C++, Java, R, Assembly, MATLAB, Rust, Go, and Kotlin. - *Web Development*: JavaScript (ES6+), TypeScript, PHP, Perl, Ruby, and Elixir. - *Scripting and Automation*: Shell scripting (Bash), PowerShell, Lua, and Tcl. - *Mobile Development*: Swift (iOS), Dart (Flutter), React Native, Ionic, and Objective-C. - *Frontend Technologies*: React.js, Vue.js, Angular, Svelte, Next.js, and Bootstrap. - *Backend & API Development*: Node.js, Express.js, Django, Flask, Ruby on Rails, ASP.NET, FastAPI, and GraphQL. - *Database Management*: MySQL, PostgreSQL, MongoDB, SQLite, Firebase, MariaDB, Redis, and Cassandra. - *DevOps & Cloud*: Docker, Kubernetes, Jenkins, Terraform, Ansible, AWS (EC2, Lambda, S3, DynamoDB), Azure, and Google Cloud Platform (GCP). - *Tools & Platforms*: LaTeX, Excel (advanced functions, VBA), Jupyter Notebooks, Power BI, Tableau, and Elasticsearch. - *Miscellaneous Skills*: - *Automation*: Selenium, Beautiful Soup, Puppeteer. - *Data Analysis & Visualization*: Matplotlib, Seaborn, D3.js. - *Version Control & Collaboration*: Git, GitHub, GitLab, Bitbucket. - *Software Development Methodologies*: Agile/Scrum, Test-Driven Development (TDD). I can assist you with: - Adding *extra hands* to your team to speed up development. - *Reviewing, debugging, and optimizing* your code for performance and maintainability. - *Collecting, analyzing, and visualizing data* to build insightful reports, presentations, and dashboards. My ultimate goal is to *over-deliver* and ensure you're 100% satisfied with the results. If my profile resonates with your needs, feel free to send me a message. Let's bring your project to the next level together!

Freelance Java Developer - Belal Haikal
Freelance Java Developer5.0 (207 reviews)
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Welcome to visit! I am a Senior Full Stack developer with 10+ years experiences of development. I am good at the following: - React.js, Angular, Vue web development - React Native, Flutter mobile app development - Node.js, Express, JavaScript, - Python, Machine Learning, Generative AI - Swift/SwiftUI/Objective C, Kotlin, Java - SQL, MongoDB, PostgreSQL, Redis - C/C++, C# Thanks

Freelance Java Developer - Daniel Uche
Freelance Java Developer5.0 (53 reviews)

Daniel Uche is a senior Full Stack software engineer with great skills. I live and breathe code, as a software craftsman, I craft code that scales for web and mobile. I have built applications that serve millions of user traffic. Feel free to hit me up on any problem you might have across **React**, **Redux**, **Node**, **JavaScript**, **Mobile app**, **Software Architecture**, **Software Engineering**, **Database Design**. I can help make complex concepts look simple. I can also help with your Software Analysis project using **LLVM Compiler Infrastructure** Also I am familiar with CI/CD, container container orchestration and elastic search and logstash ecosystem.

Freelance Java Developer - uzair rahim
Freelance Java Developer5.0 (54 reviews)
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A **Team Lead**, and a **Senior Software Engineer (Full-Stack )** with **7 years** of experience. I have worked on all front-end frameworks **(Angular JS, Vue JS, React JS, JavaScript, jQuery)** with responsiveness **(Html5, CSS, bootstrap)** and back end including **PHP (Laravel /code igniter/ Yii framework , Python, Java)**, **Node JS** and **Server-less (AWS-Amplify)**, etc. Strong Programming and OOP concepts. I am really good at **Design Patterns**, databases **(MySQL, SQL Server, Mongo DB, GraphQL, Dynamo DB, PostgreSQL)**, and Data structures. Ability to handle and make advanced database queries and provide solutions for big data applications. Extensive knowledge to deploy code on **Linux-based servers** and **AWS**. I have also worked on CMS platforms like **WordPress** and **Magento**. I want to do/give something to the IT industry and to our young developers by sharing my skills and knowledge with them.

Freelance Java Developer - Opeoluwa Lanre
Freelance Java Developer5.0 (80 reviews)

A full-stack software engineer passionate about crafting scalable, high-performing web solutions. With a strong focus on appealing user interfaces, efficient software design, and outstanding online platforms, I leverage my tech stack to build exceptional products. I thrive on collaborating with other talented engineers to deliver quick and effective solutions.

Freelance Java Developer - Rúben Paixão
Freelance Java Developer5.0 (15 reviews)

I am a software engineering with 10+ years of enterprise experience in software development, leadership and coaching. My favorite development area is Mobile Development I am also able to help any person begin a new career or reach the next level in software engineering :)

Freelance Java Developer - RajhaRajesuwari S
Freelance Java Developer5.0 (2294 reviews)
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MY WORK HOURS : 7AM to 11 PM INDIAN STANDARD TIME . 16 HOURS A DAY :) I am an experienced full stack developer 15 years in the field with consistent knowledge in developing web portals with expertise in all opensource of PHP like Wordpress , Opencart, Oscommerce, Shopify, Magento, Joomla and all frameworks of PHP - cake php , larvel, CodeIgniter, YII . I do also offer services in SEO, Malware removal, speed optimizations , Skilled with Javascript ,Node js and React . Hence moving forward with full stack development Faster delivery and 24/7 communication are my greatest plus. I do have a team of 10 . 2 designers and 8 coders to support on large scale web developments

Freelance Java Developer - Christian Schlosser
Freelance Java Developer5.0 (2 reviews)

I am a seasoned German C++ coder (10+ years of coding) and have high skills in C, C++, C#, Qt, Java, JavaScript, HTML, CSS, Kotlin, PHP, SQL, and Python. Main Skills: - Developing Windows Desktop and Other Programs (C/C++/C#, ASP.NET, Qt, Java) - Browser Extension, Cross Platform Kernel Driver, Image & Video processing. - Machine Learning and Artifical Intelligence Python - Converting or porting code from one programming language to another. Programming language. - C/C++/C#, Qt, JAVA - Python Experience - Android, iOS mobile development with React and protection - Cross Platform Kernel Driver Development Secondary Skills: - Review project and make design document and analysis document. - Write article or whitepaper Thank you for your reading my profile.. Regards.

Freelance Java Developer - Mich Okonicha
Freelance Java Developer5.0 (23 reviews)
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My years in software development has taught me that every challenge has a solution. I have honed my skills in: Web and mobile application development Cloud architecture and platform development Debugging complex issues with a cool head. Making sound architectural decisions Mentoring with patience and clarity. I have built around industries. From startups to enterprise platforms. Cloud technologies? I work with them daily. Scalability issues? I have solved a few. My approach is simple: listen, analyze, solve. No fuss, no stress. Whether you are stuck on a thorny bug, planning a major cloud migration, wanting to build a software application, or seeking mentorship. I am here to guide you through with steady expertise.

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Frequently asked questions

What is Java?

Java, not to be confused with JavaScript, is an object-oriented programming language (OOP) developed by Sun Microsystems. It is similar in syntax to languages such as C++, and it was designed to be widely supported and compiled.

Having been around since 1995, the latest stable version is Java SE 19. One of Java’s best features is its portability, meaning that it can run on many types of operating systems, and it achieves this in part through its implementation of Java virtual machines (JVMs).

What is Java particularly good for? When is it the right choice for a project?

Java is useful in many areas across software development. From web applications and game development to IoT programming and even artificial intelligence, it remains one of the top choices and in high demand today.

Java is a great choice for your programming project if you like the idea of “Write once, run anywhere” (WORA), one of Java’s most popular slogans. With a massive community for support and virtually limitless development tools at your disposal, it certainly is a safe option that won’t become obsolete anytime soon.

How long do Java projects normally take?

The length of a project depends on many factors, including the scope of your project and the technical complexity of it. When you post a freelance Java project request on Codementor, you’ll have the option to indicate when you’d expect the project to be completed. We suggest chatting with the interested developers to ensure both sides are on the same page. For more information on how to post a freelance Java request on Codementor, check out our article.

How much does it cost to hire a freelance Java developer?

We don’t charge anything when you post a freelance hiring request for Java developers! You’ll have the chance to determine what the budget for your project is when you post the request. You’ll only need to pay the developer if you’re 100% satisfied with their work. Please know that Codementor charges a small service fee when a developer completes the job.

What skills should I look for in a Java developer applicant?

For technical skills, dig into their knowledge of Java and the entire ecosystem. Have they used it only for smaller projects, or do they have expertise with it on an enterprise level? Start out on the easier end, testing their knowledge of JVM, bytecode, syntax, and applications. From there, move into more intermediate and advanced territory, such as applets and servlets, memory management, functional programming, and distribution.

But, don’t neglect inquiring about their soft skills! Any freelance developer you hire should be skilled in problem solving, critical thinking, analytical thinking, and able to adapt to changing tasks. Get a sense for how organized they are, as well, both in their coding and in their day-to-day tasks.

What makes Codementor Java developers different?

We do a comprehensive technical and communications screen of all Java developers at Codementor. Our network includes book authors, popular open source contributors, top Stack Overflow users and engineers at top tech companies. In addition, to continually ensure the quality of our freelancers, we regularly check in on existing Java developers’ user satisfaction rates.

What Java interview questions should I ask freelance applicants?

To get a sense of their Java knowledge, start with some basic interview questions around how much experience they have. How long have they been working with Java? Do they primarily work in Java? Do they have a portfolio with some Java software projects you can check out?

Aside from testing their technical skills, you’ll want to use your interview to understand their remote readiness, as well. A contract Java developer should be a good manager of their own time, able to work autonomously without much supervision, and a great communicator, among other things.

What happens if I’m not happy with the freelancer’s work?

As a platform, we strive to ensure you’re always happy with your Java project’s results. If you’re unsatisfied with the results, you can choose to get a refund for the project. Additionally, you can contact our support team should you need any further assistance with your project.

For more answers to frequently asked questions, see here.

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