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Freelance Java Developer - Adrian Segui
Freelance Java Developer5.0 (193 reviews)

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, Zoho, Salesforce, Hubspot, 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 - RajhaRajesuwari S
Freelance Java Developer5.0 (2358 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 - Alan Santos
Freelance Java Developer5.0 (44 reviews)

*AI-Powered Developer (Web & Mobile & Software & Embed devices)* AI Integrate | AI Agents | Generative AI *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: - *AI Integrate and Machine Learning* ChatGPT, Gemini, Claude Integrating AI models(LLM, NLP, CV) Auto-GPT, BabyAGI, SuperAGI Zapier AI, Rewind AI, Otter.ai Machine Learning, CNN, Keras, LSTM, PyTorch, Tensorflow, Computer Vision, sci-kit - *AI-Driven Frontend* React.js, Next.js, Bootstrap, Javascript, Typescript, MUI, TailwindCSS - *Backend & API & AI agents* Node.js, Express.js, Django, Flask, Ruby on Rails, ASP.NET, FastAPI, and GraphQL. - *AI-Powered Mobile Development* Swift (iOS), Java/Kotlin(Android), Dart (Flutter), React Native, Ionic AR / VR, Unity - *General Purpose Languages*: Python (Pandas, NumPy) C/C++, Java, R, Assembly, MATLAB, Rust, Go - *Scripting and Automation*: Shell scripting (Bash), PowerShell, Lua, and Tcl. - *Database Management*: MySQL, PostgreSQL, MongoDB, SQLite, Firebase, MariaDB, Redis, and Cassandra. - *Software*: C#, Asp.net - *SAS*, *STATA* - *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, MS Power Automate, 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 - Daniel Uche
Freelance Java Developer5.0 (55 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 - Kirill Erokhin
Freelance Java Developer5.0 (233 reviews)

I teach Operating Systems and functional programming fundamentals to CS students and guide fellow professionals through legacy codebase maintenance, practical software architecture, and new language/framework learning skills. For students, I offer two types of sessions - one is a lecture-style session where I can go over course notes/slides on a particular topics and offer additional explanations and examples to improve your understanding of the material. Another type is an assignment take-up session where I can go over a past assignment and guide you through steps to solving it. For working professionals, I offer the following options: * Focused problem-solving sessions - if you have a particular issue that you're stuck with in a project you're working on, I can pair with you over Zoom screen-sharing * Code review - if you cannot understand how to work with part of your codebase or if you'd like a second opinion on work that you've just completed, I can pair with you over Zoom and do a live code review and/or prepare ahead of time and go over my findings on a call * Long-term mentorship - if you would like to learn some more fundamental skills or pick up a framework/design pattern/best practices, I can develop a custom-tailored learning plan that fits your skill level and schedule and offer regular teaching sessions with optional take-home exercises A bit about me --- I am a tech founder and a senior polyglot/full-stack developer, with a passion for teaching and mentorship. In a bit of spare time from my work, I am looking to help fellow software developers get more comfortable with our craft and exercise my teaching skills while I'm at it. So far, I've done a wide range of work - web app front-end and back-end, data pipelines at scale, DevOps/infrastructure, mobile (quite a bit of iOS and previously some Android) and some security. I have a reasonable taste for UI design and user experience, despite that not being my primary specialization. The industries I've worked in so far were heavily concentrated around finance/banking/FinTech and GovTech, although I've also been a founding developer at a couple of B2C startups and learned a lot throughout that experience. My personal research interests include operating systems and programming language theory. As cliche as it sounds, I try to learn something new all the time and I consider this of vital importance to my professional skillset. I always prioritize systems understanding and learning how to learn over memorizing APIs - and it's a philosophy that I try to share with my students as well. Teamwork and constant exchange of expertise with my peers is a close second most important value to me. A software product can be almost meaningless without a team that welcomes learning from failures, encourages curiosity and fosters true human friendships, and empathy both towards each other and towards the customers of the software we create. New client intake process --- 1. Intro/triage call [free of charge] [15 min] - this is a Zoom video call where I try to understand your background, the problem you're looking to solve and whether I believe we'd be a good fit for a productive mentor/mentee relationship. 2. Supplemental terms acceptance - as an independent contractor and not an employee of Arc, I ask my clients to accept a few additional terms that make session time measurement, scheduling and work product acceptance more precise, and further clarify the extent of our mentorship relationship. 3. Creation of Freelance Job/Scheduled Session on Codementor - if you haven't done that yet, I will ask you to create and assign me a freelance job and/or a scheduled session with a precise description of the topics we would be covering. For certain sessions, preliminary preparation may be required - if that is the case, we would discuss the details and estimated time ahead of time and a Freelance Job would be required to cover the effort of the preparation. Availability --- Please take a look at my Codementor calendar to plan intro calls and sessions. Generally, I am available between 3:30pm and 8pm Eastern Time (New York/Toronto), Monday to Saturday, but I try to schedule all of my teaching engagements between 6pm and 8pm whenever possible. *IMPORTANT: Urgent sessions are unfortunately not available at this time.* I am currently working through Codementor as a mentor, and unable to work as an on-call freelance developer. Please also note that I cannot provide consultations over chat - in my experience, it's generally more time-consuming for everyone, and copy-pasting code over chat can get messy. For those reasons, I only work through Zoom video calls with screen sharing. If you have any questions about the process or would like to book a call, I am happy to chat on Codementor - I should be usually available Monday-Saturday, 1pm - 8pm Eastern Time, subject to my other engagements. While I try to respond as soon as I can, I may take up to one business day or longer depending on how busy my schedule might get.

Freelance Java Developer - Aasif Khan
Freelance Java Developer5.0 (4 reviews)

Experienced Software Engineer specializing in distributed systems and scalable architectures. Skilled in React, Next.js, TypeScript, Golang, and backend scheduling systems. Passionate about backend performance optimization and open-source contributions, with contributions to dicedb and open-feature/flagd.

Freelance Java Developer - Behnam Anjomruz
Freelance Java Developer5.0 (31 reviews)
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I have been helping multiple companies since 2008. So probably somewhat qualified to answer the same. Being a code mentor, I will have the opportunity to get involved in different technical challenges that I really love. Next, I'm usually pretty good at answering odd questions.

Freelance Java Developer - Opeoluwa Lanre
Freelance Java Developer5.0 (116 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 - Abdulganiyu Abubakar
Freelance Java Developer5.0 (39 reviews)

I am a software developer with years of experience and proven track record of accuracy and commended performance in modular and object oriented programming with dedicated and exceptional work ethic and passion.

Freelance Java Developer - Kazi Sohan
Freelance Java Developer5.0 (112 reviews)
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I love to teach what I know. I think I can explain things easily with examples. I have been working as a Software Engineer for the last 5 years and have worked with some of the world's most reputed companies like **Open AI, Scale AI, Doloras Lab**, etc as a freelancer.

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Frequently asked questions

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.

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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.

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