Upwork home
Sign up
Secondary

Hire the best Java Developers in Illinois

Check out Java Developers in Illinois with the skills you need for your next job.
Get started
  • $35 hourly
    • 4.5/5
    • (73 jobs)
    Greetings! I’m a qualified Full Stack Web and Mobile App Developer and Digital Marketing Specialist with 5+ years of experience . I have been providing high-quality services to my clients for 5 years in different niches such as Real Estate, Healthcare, Manufacturing, Information Technology (IT), Automotive and Food services. You must be wondering why should you hire me? So, here’s why! • I value my work which makes me value my clients in providing them high-quality professional & 100% satisfactory work. • My work ethics demand me to provide delivery on time to you. • I assure 100% money back guarantee if my work is not up to the mark. And as for my projects, I have been on board with clients on projects like E-commerce, UI/UX for Mobile and Web, CMS, and CRM Systems. In fact, in website development, I am skilled at; • Wordpress Development • E-commerce Development • Static Website Design & Development • Php and Custom Php Development • Magento Website • .Net Framework • Laravel • Drupal • Shopify I also provide my services in Mobile App/Games Design and Development such as, • IOS • Android
    Featured Skill Java
    Social Media Marketing
    ERP Software
    CRM Development
    API Development
    Web Application
    PSD to WordPress
    Magento
    React Native
    JavaScript
    WordPress
    Webflow
    ASP.NET MVC
    Shopify
    Mobile App Development
  • $60 hourly
    • 5.0/5
    • (16 jobs)
    Since 2016, I’ve been at the forefront of Software Development, specialized in 𝐃𝐚𝐭𝐚 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠, 𝐀𝐈, 𝐌𝐚𝐜𝐡𝐢𝐧𝐞 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠, 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 and 𝐃𝐞𝐯𝐎𝐩𝐬 𝐬𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬. With experience at Microsoft and beyond, I’ve delivered AI-driven apps, scalable web solutions, and DevOps strategies across industries. Maintaining a 5-star client rating and 95% on-time completion rate, I focus on innovation, efficiency, and high-impact results. 🤝 Leading a team of experts, I deliver tailored solutions for businesses of all sizes, ensuring smooth development process, cutting-edge innovation, and measurable success. 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐈 𝐏𝐫𝐨𝐯𝐢𝐝𝐞: √ AI-Powered SaaS Development: Scalable, secure, and intelligent SaaS solutions. √ Data Engineering & Management: Real-time data pipelines and analytics platforms. √ AI Model Development and Integration: Custom AI/ML solutions for predictive analytics and automation. √ Cloud-Native Development: Scalable cloud architecture with AWS, GCP, and Azure. √ Full-Stack Development: Front-End and Backend Development, SaaS, MVP 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: 💎 AI & Machine Learning: AI Model training, Model Development, Computer Vision, AI Chatbot, NLP, LLM, RAG, Image Processing. 💎 Full-Stack Development: Frontend and Backend Development, SaaS, MVP 💎 Mobile Apps: Cross-platform and Native Apps. 💎 Cloud & DevOps: CI/CD pipelines with Docker and Kubernetes, Workflow Automation. 💎 Data Engineering: ETL Pipelines, Large Data Pipelines, Data Migration, API Development, Data Management . 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 𝐖𝐞 𝐚𝐫𝐞 𝐀𝐝𝐞𝐩𝐭 𝐢𝐧: • Languages: Python, JavaScript/TypeScript, Golang, Ruby, PHP, C#, C++, Swift, React Naitve,Flutter and more. • Frameworks/Technologies: Django, FastAPI, React, Next.js, NestJS, Prisma, LangChain, Flask, Node.js, Express.js, Docker, Kubernetes, and Tailwind CSS. • Cloud: AWS, GCP, DigitalOcean, Vercel, and Azure. • Databases: PostgreSQL, MongoDB, CosmosDB, MySQL, Firebase, and Weaviate. • AI & ML: PyTorch, HuggingFace, Scikit-learn, OpenAI, LangChain, Pandas, and TensorFlow. • Tools & Platforms: Figma, Photoshop, Zapier, OpenTelemetry, SendGrid, and QuickBooks. Industries I've catered to: √ Legal: License & Compliance Management √ Healthcare: AI-driven patient record and case management systems. √ E-Commerce Solutions: Personalized shopping experiences with AI recommendations. √ Education: Created Document processing and retrieval system for Educational system √ Digital Transformation: Modernizing traditional businesses with digital-first platforms through AI, Machine Learning and Deep Learning. 🌟 “Innovation is not just a goal-it’s a mindset. Let’s build the future together.” 📞 Contact me today to transform your vision into reality with cutting-edge technology and unparalleled expertise.
    Featured Skill Java
    Golang
    ETL Pipeline
    TensorFlow
    Django
    Next.js
    JavaScript
    Python
    Cloud Computing
    DevOps
    SaaS Development
    Full-Stack Development
    Machine Learning
    AI Development
    Data Engineering
  • $100 hourly
    • 4.8/5
    • (33 jobs)
    My main strength besides my programming ability is communication. I ask a lot of questions so that you get your product delivered on time, on budget, and exactly as specified. I also have a creative side and an eye for design for when you're not sure exactly what you're looking for when needed. I'm very flexible and work well under pressure.
    Featured Skill Java
    Node.js
    Microsoft Server
    Serverless Computing
    React
    Mac OS App Development
    GUI Design
    Provisioning
    Application Integration
    Desktop Application
    JavaScript
    C#
    Python
    Electron
  • $60 hourly
    • 5.0/5
    • (4 jobs)
    Experienced full-stack engineer. Built AI startup and worked as Software Engineer at JPMorgan. Expert in AI applications, distributed systems, and high-performance backends. Proficient in Python, Java, JavaScript, cloud infrastructure, containerization, and microservices. Delivers scalable solutions from concept to production, leveraging cutting-edge tech in both enterprise and startup environments. BS in Computer Science from Illinois State University, with internships at Fortune 100 financial companies and startups.
    Featured Skill Java
    Next.js
    Ruby
    Node.js
    REST API
    JavaScript
    C++
    PostgreSQL
    Heroku
    DevOps
    React
    Flask
    Django
    Machine Learning
    Python
  • $25 hourly
    • 5.0/5
    • (6 jobs)
    I have long experience in designing and developing software applications by analyzing user requirements, creating design specifications, and writing code to implement these specifications. I have also profession in testing and debugging software using agile, Microsoft azure to ensure it functions correctly and debugging to identify and fix any issues or bugs that may arise. I can maintain and update existing software systems to keep them running smoothly and to incorporate new features or improvements. I also work in teams with other professionals such as designers, product managers, and quality assurance teams to bring a software project to fruition. I can adept at problem-solving and finding efficient solutions to complex technical challenges. Another I can make website, mobile app, and others. I am also much professional in editing video using different softwares like adopt primer pro, canvas and others.
    Featured Skill Java
    Front-End Development
    Canvas
    Video Editing
    Machine Learning
    Agile CRM
    Android App
    iOS Development
    UserTesting
    Mobile App
    Web & Mobile Design Consultation
    Microsoft Azure
    Python
    HTML
    Web Application
  • $55 hourly
    • 4.4/5
    • (50 jobs)
    👋 Hi there! I'm a Top Rated Plus Software Engineer with a proven track record of delivering exceptional results in web application development, IoT solutions, and AI-powered systems. With over 10 years of experience and expertise in building scalable, secure, and high-performing solutions, I’m here to help turn your ideas into reality. 🔧 My skills include: Web Applications: Full-stack development using modern frameworks and tools for responsive, user-friendly platforms. IoT Solutions: Custom hardware integration, real-time data processing, and cloud-enabled devices. AI & Machine Learning: Implementing intelligent agents, predictive analytics, and automation tailored to your needs. Whether you're looking to build a cutting-edge product or optimize existing systems, I focus on delivering robust solutions while ensuring a seamless collaboration experience. Let’s bring your vision to life—message me to discuss your project today!
    Featured Skill Java
    Full-Stack Development
    MERN Stack
    JavaScript
    React
    Node.js
    Database
    AWS IoT Core
    Payment Processing
    Website
    ChatGPT
    Enterprise Software
    AI Development
    Mobile App Development
    Web Application
  • $75 hourly
    • 5.0/5
    • (50 jobs)
    I am a highly experienced Java developer with 20 years of industry experience and I have been specializing in implementations using Adobe Experience Manager (AEM) for the past 9 years. I've built solutions in AEM 6.1 - 6.5 and AEMaaCS. In 2018, I was one of the winners of the Adobe Immerse 2018 Community Code Contest, as well as a presenter at the Adobe Immerse virtual conference, leading a discussion on Creating Custom ContextHub Stores and UI Modules in AEM. I have also contributed to ACS AEM Commons (the main AEM open source project) by helping to build Shared Component Properties. I also have solid experience working with various JavaScript frameworks like jQuery and VueJS and the drive to pickup new ones when necessary. I am also familiar with Less, SCSS, and CSS and the concepts of building responsive sites using Bootstrap and AEM Grid. I strive to write clear and maintainable code, and fully document my code to ensure future developers have a clear understanding of all methods and classes. Also, I will gladly provide any additional documentation or training materials requested, which will be well structured and well written. I am a strong problem solver and skilled at exploring and debugging complex problems to get software applications back on track when strange errors or edge case scenarios arise.
    Featured Skill Java
    NodeJS Framework
    Adobe Experience Manager
    Vue.js
    Spring Framework
    CSS
    JavaScript
    Jakarta Server Pages
    HTML
    Java Servlet API
    jQuery
  • $75 hourly
    • 5.0/5
    • (12 jobs)
    As a seasoned IT Security & Infrastructure Executive with over a decade of experience, I specialize in developing and implementing robust security strategies to safeguard information systems across diverse industries. My expertise spans risk management, cybersecurity, and building resilient IT infrastructures that support organizational goals. I hold multiple certifications, including CISSP and CISM, and have a proven track record of leading high-performing teams to optimize security postures and streamline IT operations. I am committed to leveraging my deep technical knowledge and strategic insight to deliver secure, efficient, and innovative solutions that drive business continuity and growth.
    Featured Skill Java
    Microsoft Azure
    Microsoft Active Directory
    React Native
    HTML5
    CSS
  • $90 hourly
    • 4.8/5
    • (14 jobs)
    ↗️ I can start immediately however. I'd like to be sure we match well. 📌 Requirements call is a must! 🛑I will not participate in small fixes projects - sorry, guys. I know how to manage your expectations and to meet all your requirements. I am a Sofware Architect with 8+ years of engineering experience. I develop secure applications as a full-stack developer using Java and Kotlin. I create dynamic front-ends as a full-stack developer using JavaScript and TypeScript. I optimize database performance as a full-stack developer by leveraging SQL. I design responsive interfaces as a full-stack developer with HTML and CSS. I integrate strong back-end logic as a full-stack developer using Spring Framework. I build scalable solutions as a full-stack developer with Java and Kotlin. I enhance interactivity as a full-stack developer using JavaScript and TypeScript. I develop enterprise applications as a full-stack developer with Spring Framework. I structure software systems as a full-stack developer using Java and Kotlin. I ensure smooth API communication as a full-stack developer using RESTful architecture. I create seamless front-end experiences as a full-stack developer using JavaScript and TypeScript. I optimize data storage as a full-stack developer with SQL. I develop interactive UIs as a full-stack developer using HTML and CSS. I implement scalable solutions as a full-stack developer using Spring Framework. I enhance application performance as a full-stack developer with Java and Kotlin. I improve security as a full-stack developer using best practices in Spring Framework. Why Work With Me? I manage development workflows as a full-stack developer using Git. I build scalable applications as a full-stack developer with strong web development skills. I integrate third-party services as a full-stack developer using API integration. I create powerful back-end systems as a full-stack developer with Spring Framework. I develop dynamic front-ends as a full-stack developer using Angular and AngularJS. I enhance user experiences as a full-stack developer with jQuery. I focus on secure applications as a full-stack developer by prioritizing website security. I improve system architecture as a full-stack developer using RESTful architecture. I build fast applications as a full-stack developer with React and Node.js. I deploy scalable solutions as a full-stack developer using Amazon Web Services, Docker, and Kubernetes. I manage cloud-based applications as a full-stack developer with AWS. I enhance system security as a full-stack developer using Spring Framework. I optimize performance as a full-stack developer with Java and Kotlin. I improve web interfaces as a full-stack developer with JavaScript and TypeScript. I ensure structured data management as a full-stack developer with SQL. I develop flexible web designs as a full-stack developer with HTML and CSS. How I Can Help You I write clean code as a full-stack developer using Java and Kotlin. I manage databases as a full-stack developer with SQL. I optimize data storage as a full-stack developer using PostgreSQL, MongoDB, MySQL, and Redis. I configure servers as a full-stack developer using NGINX, Apache HTTP Server, and Apache Tomcat. I create efficient back-end systems as a full-stack developer with Spring Framework. I develop secure APIs as a full-stack developer using Apache Groovy. I deploy scalable applications as a full-stack developer with AWS, Docker, and Kubernetes. I optimize cloud solutions as a full-stack developer using AWS. I enhance business logic as a full-stack developer with Spring Framework. I improve API performance as a full-stack developer using Apache Groovy. I develop modern web applications as a full-stack developer using React and Node.js. I implement scalable back-end logic as a full-stack developer with Spring Framework. I integrate responsive front-end components as a full-stack developer with JavaScript and TypeScript. I ensure security and efficiency as a full-stack developer by following best coding practices. Let’s Work Together If you need a full-stack developer with deep expertise in Spring Framework, Java, Kotlin, SQL, JavaScript, HTML, and TypeScript, let’s discuss your project. Send me an invite, and let’s create something great!
    Featured Skill Java
    Web Development
    PostgreSQL
    Kotlin
    RESTful API
    RESTful Architecture
    API
    AngularJS
    React
    TypeScript
    JavaScript
    Angular
    Hibernate
    Microservice
    Spring Framework
  • $75 hourly
    • 4.9/5
    • (15 jobs)
    🥇Top Rated Development Freelancer with 100% Job Success🥇 📈Top 10% of UpWork Talent📈 Looking to bring the benefits of a custom mobile application to your business? Need updates for an already existing app? I've always been passionate about creating beautiful and clean mobile apps. I have years of experience in iOS and Android development which has given me the pleasure to create a variety of apps from games to social media to e-commerce. Education: 🟠 Go Illini! 🔵 -University of Illinois Urbana-Champaign Grad -Bachelors of Engineering in Computer Science My specialties are: -Well-written, robust code -Database solutions that can scale -Beautiful and engaging mobile app design -Building solutions to fit YOUR specific needs Why Me? ✅ Communication: Keeping in contact, in my opinion, is the most important part of a project. I'm always here to answer any questions, big or small. Not only do I answer questions, but I'll make recommendations to help you make your app the best it can be. ✅ Experience: I've been developing mobile apps for over 5 years now. In addition to my mobile development experience, my computer science degree, backend experience, and web development experience keep me well-rounded. Although I'm a professional mobile developer, I can take on any role a project requires. ✅ Passion: I love developing apps! It has been my passion since high school and I've been developing ever since. From creating beautiful designs to figuring out complex problems, I love it all and want your project to reach its full potential! 📈 I have developed three client applications that have broken the Top 200 Paid apps list in the iOS App Store. If you need quality, design-focused, scalable mobile applications, then let's get working! With 20+ clients in the past two years, I have the experience others don't.
    Featured Skill Java
    AWS Lambda
    Database
    Mobile App Design
    UI/UX Prototyping
    Amazon ECS
    Mobile App Development
    Android App Development
    iOS Development
    Android
    Objective-C
    AWS Amplify
    Firebase
    Swift
  • $40 hourly
    • 5.0/5
    • (1 job)
    Experienced Android Developer | Kotlin • Jetpack Compose • UI/UX-Focused I’m an Android developer with 5+ years of experience, specializing in Kotlin, Jetpack Compose, and modern Android architecture (MVVM, Hilt, Coroutines, etc). I help businesses build fast, scalable, and user-friendly mobile apps that stand out. What I can do for you: Build new features from scratch or improve existing ones Migrate legacy codebases to modern Android (Compose, Kotlin) Optimize performance, reduce crashes, and enhance UX Set up clean architecture and smooth navigation flows (including URL-based deep links) Implement analytics for data-driven decisions I’ve also led small teams, mentored junior developers, and collaborated across departments to ship high-impact features
    Featured Skill Java
    Koin
    JetPack
    RESTful API
    Dagger 2
    UX & UI
    Android UI Design
    Performance Optimization
    Clean Architecture
    Kotlin
    Android App Development
  • $175 hourly
    • 5.0/5
    • (4 jobs)
    "Wayne is not only skilled at directing a software product from an architectural standpoint, he also is able to understand it a micro level. As a result, he usually has a very complete grasp of any code he works with for any significant amount of time, whether it's something he's designed or something others have designed." -- Jim K "I experienced Wayne as a highly skilled and motivated software engineer, with a fast and analytical mind. His expertise and creativity always made him the default technical lead of the team. I highly recommend him." -- J. Ovesen With the right software engineer, your project can be done right the first time. When the strongest developers are 10x better than the weakest, working with someone with the lowest hourly could be more expensive than working with a strong engineer with a higher rate! I have been writing software for 30 years, from web, mobile, and desktop apps to firmware written in assembly. I understand software development at its core and can therefore handle your project expertly. In addition, I have been leading software development teams for 2 decades so I can help you manage a team if that is what you are looking for. On the mobile app side, I wrote the first few versions iOS and Android apps for Sound World Solutions, and internal tools in Xamarin and Swift. I also wrote and maintained an inventory management app that used barcode and RFID scanners in Xamarin. On the desktop side, I was the technical lead for the fitting software at GN Resound in the early 2000s. Recently, I have written factory test software and a lot of internal tools in C#/WPF. I have also written desktop software in Java for cross platform compatibility. On the firmware side, I have written the software on a hearing aid on 2 different chipsets and 2 different DSPs. These were written in C and assembly. For web apps, I have worked on e-commerce sites for Sound World Solutions and, too many moons ago, on J2EE and ASP. Currently, I am working on a project in Laravel. As you can see, I can help you with your project! I am efficient and deliver quality code. Please get in touch if you would like me to join your team.
    Featured Skill Java
    Cloud Architecture
    PCB Design
    Objective-C
    Swift
    C++
    Digital Signal Processing
    Xamarin
    C#
    C
    Firmware Programming
    Relational Database
    Bluetooth
  • $60 hourly
    • 5.0/5
    • (1 job)
    Open minded, hard working and technical skilled geek person. I'm developer with more than 15 years of software development. I have experience in different areas of software engineering from low level firmware development to WEB-services in NodeJS and UI with ReactJS. - I'm experienced in Java, NodeJS and Scala development. - Can work as a team player or solo. - Regular communication is a key of success.
    Featured Skill Java
    Node.js
    Hibernate
    Spring Boot
    Scala
  • $40 hourly
    • 5.0/5
    • (1 job)
    I'm a developer with experience in Java, Python, PL/SQL and other OOP languages, SQL based languages, and command line programming in bash. If you need a general programming consultant, I'm your girl.
    Featured Skill Java
    C++
    Linux
    Git
    SQL Programming
    Agile Project Management
    Jira
    SQL
    Python
    ETL
    Oracle Database
    IBM Db2
  • $50 hourly
    • 5.0/5
    • (1 job)
    As a seasoned mobile app developer, I specialise in producing top-notch programmes employing well-liked frameworks including Swift, Kotlin, Flutter, and React Native. I have successfully completed several projects over my career, including native and cross-platform apps. I have created solid native applications for iOS and Android using my knowledge of Swift and Kotlin. Additionally, I have been able to create cross-platform apps that work perfectly on both platforms because to my competence with Flutter and React Native. My true motivation comes from the chance to design outstanding user experiences. I am able to produce unique and user-friendly mobile applications by fully comprehending the demands and objectives of my clients. I am confident in my ability to provide first-rate app solutions and exceed customer expectations thanks to my broad expertise and skill set. Here are the technical skills that I bring to the table: Mobile App Development: Using Swift, Kotlin, Flutter, and React Native, I have a great deal of expertise building apps for both iOS and Android platforms. This enables me to create native and cross-platform programmes that guarantee the best possible usability and performance. Frontend Development: I am well-versed in HTML, CSS, JavaScript, as well as cutting-edge frontend frameworks like Angular, React, and Vue.js. This knowledge helps me to produce aesthetically beautiful and responsive user interfaces (UI) and user experiences (UX) that are fascinating. Backend Development: I have experience with Node.js, PHP, and Ruby on Rails, among other server-side technologies. As a result, I am able to create and build reliable APIs that seamlessly work with mobile apps to ensure effective data transmission and operation. Database management: I have experience dealing with a variety of databases, including Firebase, MySQL, and MongoDB. I take care of data archiving, retrieval, and synchronisation, assuring scalable database architecture that is adapted to the particular needs of each project. Deployment and DevOps: I have knowledge of the process of uploading mobile apps to the Google Play Store and the App Store. I am familiar with cloud computing platforms like AWS and Google Cloud, version control systems like Git, and continuous integration and deployment (CI/CD) procedures. Mobile app development Native app development Cross-platform app development Swift Kotlin Flutter React Native iOS app development Android app development User experience (UX) User interface (UI) Frontend development Backend development API development Database management App deployment App store optimization (ASO) Mobile app testing Mobile app analytics Agile development Scrum methodology Wireframing Prototyping Continuous integration (CI) Continuous deployment (CD) Version control (Git) Cloud computing Responsive design Push notifications
    Featured Skill Java
    Angular
    Android App Development
    iOS Development
    React
    React Native
    Flutter
    Desktop Application
    Web Application
    Smartphone
    Native App Development
    Mobile App
  • $55 hourly
    • 5.0/5
    • (1 job)
    Entry-level freelance full stack developer and data analyst, specializing in HTML, CSS, JavaScript, SQL, Python R, and Ruby on Rails with focus in automating tasks to streamline processes for business owners big and small. Compassionate nature in leadership & ability to successfully coach and motivate others plus an extensive range of experience in Service and Sales, and Management equals the formula for a key player in the success of the any essential business' backbone.Entry-level freelance full stack developer and data analyst, specializing in HTML, CSS, JavaScript, SQL, Python R, and Ruby on Rails with focus in automating tasks to streamline processes for business owners big and small. Compassionate nature in leadership & ability to successfully coach and motivate others plus an extensive range of experience in Service and Sales, and Management equals the formula for a key player in the success of the any essential business' backbone.
    Featured Skill Java
    Financial Audit
    Invoicing
    DevOps
    Microsoft Power BI
    Microsoft Excel
    Salesforce
    R
    Python
    HTML
    CSS
    Ruby on Rails
    Data Entry
    General Transcription
  • $40 hourly
    • 5.0/5
    • (1 job)
    I am a computer engineer from the University of Illinois at Urbana-Champaign experienced in designing and developing websites tailored to the needs of small to medium-sized enterprises. If you need high quality websites that stand out with interactive features and captivating designs, I can help. ‣ Knows HTML/CSS, React.js, Python, SEO, and Full-Stack development ‣ Works with numerous small and medium-sized start-ups to help start and finish their projects ‣ Has experience with consulting for large projects, so communication and delivering high quality work are very strong skillsets
    Featured Skill Java
    Embedded System
    C
    SEO Software
    Flutter
    React Native
    C++
    API Development
    Full-Stack Development
    jQuery
    Django
    React
    Python
    HTML
    JavaScript
  • $45 hourly
    • 5.0/5
    • (0 jobs)
    Jose Eduardo Quezada Freelance Telecommunication and Software Engineer Freelancer 🌐 Portfolio: jeqsolutions.com/portfolio 📧 Email: eduardoq@jeqsolutions.com 📞 Phone: (630) 401-9125 / 281 644-9809 I offer comprehensive web system development services designed to deliver robust, scalable, and innovative solutions tailored to meet the unique needs of your business. Our approach integrates in-depth analysis, systematic program design, and a structured development cycle to ensure that your web systems are not only functional but also optimized for performance and usability. Process: Analysis: I start by thoroughly analyzing your business requirements, goals, and challenges. Our expert team works closely with you to understand your specific needs, ensuring that we gather all necessary information to create a tailored solution. This phase lays the foundation for a well-defined project plan, ensuring alignment with your vision and objectives. Program and Development Cycle: Development process built on a structured cycle that ensures smooth project execution from start to finish. We follow industry best practices and modern methodologies to design, develop, test, and deploy your web system. Our development team is proficient in both frontend and backend technologies, enabling us to create high-performance, secure, and user-friendly web applications. Testing and Deployment: Rigorously test your web system to ensure it meets the highest standards of quality. Our quality assurance process includes functional testing, performance testing, and security assessments. Once the system is thoroughly tested, we manage the deployment process to ensure a seamless launch. Ongoing Support and Maintenance: Post-deployment, I provide ongoing support and maintenance to keep your web system running smoothly and up to date with evolving technologies. Our goal is to ensure your system remains efficient, secure, and capable of adapting to changing business requirements. Enhanced Control and Communication: For better project management, I provide, at no extra cost, a highly efficient online project manager system. This tool is designed to facilitate seamless communication, ensure real-time updates, and provide transparent tracking of project milestones. It enables you to stay informed about the progress of your project and engage with the team at any stage of development, ensuring that timelines are met and expectations are exceeded. Web system development services focused on delivering high-quality solutions that not only meet but exceed your business needs. Partner with us today to build a future-proof web system that drives success. About Me I’m a passionate and detail-oriented web developer with over 20 years of experience in creating engaging and functional websites. As a freelancer, I’ve had the privilege of working with diverse clients, from startups to established businesses. My goal is to deliver high-quality solutions that not only meet but exceed my clients’ expectations. Skills Front-End Development: Proficient in HTML5, CSS3, and JavaScript. Responsive design and cross-browser compatibility. Familiarity with front-end frameworks like React and Vue.js. Back-End Development: Skilled in PHP, Node.js, and Python. Experience with RESTful APIs and server-side scripting. Database management using MySQL and MongoDB. UI/UX Design and Development: A keen eye for aesthetics and user-friendly interfaces. Wireframing, prototyping, and usability testing. Comply with legislation: accessibility: inclusive approach to comply with the ADA & adhere to WCAG. PCI and HIPPA compliance. SEO Optimization: Implementing on-page SEO best practices. Improving website performance and search engine rankings. PROJECTS: E-Commerce Website and system development for Vividseats Developed a custom e-commerce platform using React and Node.js. Integrated payment gateways and ensured a seamless shopping experience. Improved site speed, resulting in a 20% increase in conversions. Front and Back End Website for Ycharts Designed a visually stunning portfolio site using Vue.js and Firebase. Implemented smooth animations and optimized image loading. Result: Increased client inquiries and bookings. Let’s Collaborate! Whether you need a new website, a redesign, or ongoing maintenance, I’m here to help. Let’s create something remarkable together! Feel free to reach out via email or phone.
    Featured Skill Java
    Linux
    PHP Script
    MySQL Programming
    Software
    YUI Library
    Microsoft Virtual Server
    Google Closure
    Oracle Enterprise Service Bus
    C++
    PHP
    MySQL
    Agavi
  • $35 hourly
    • 5.0/5
    • (1 job)
    Analytical and detail-oriented Data Analyst with over 4+ years of experience in processing complex data sets, providing actionable insights, and conducting data visualization. Proven expertise in analyzing data trends, enhancing data accuracy, and supporting strategic initiatives. Expert in Python, SQL, and Java.
    Featured Skill Java
    Problem Solving
    Python Script
    Data Analysis Consultation
    Data Analysis
    Deep Learning Framework
    Deep Learning Modeling
    Deep Learning
    Computer Vision
    Machine Learning Model
    Machine Learning Algorithm
    Machine Learning
    PyTorch
    Python Scikit-Learn
    Python
  • $35 hourly
    • 5.0/5
    • (2 jobs)
    - Mobile software developer with 9+ years of work experience in both general iOS/Android development (UIKit/SwiftUI/CoreGraphics/CoreAnimationReactNative) and computer vision/graphics (ARKit/RealityKit/Metal/OpenGL(ES)/GLSL/Open3D/PointCloud/Eigen) - Solid understanding and practical experiences in 3D graphics mathematics. - Created software products for both consumer & industry usage in fields like social media, smart electronics and AR/VR. - Some practical experiences in Machine Learning / AIGC
    Featured Skill Java
    Unreal Engine
    MATLAB
    Metal
    RealityKit
    OpenGL
    WebGL
    Python
    C
    C++
    Swift
    ARKit
    iOS
    Android
    Objective-C
  • $110 hourly
    • 4.7/5
    • (59 jobs)
    Distributed Computing: Apache Spark, Flink, Beam, Hadoop, Dask Cloud Computing: GCP (BigQuery, DataProc, GFS, Dataflow, Pub/Sub), AWS EMR/EC2 Containerization Tools: Docker, Kubernetes Databases: Neo4j, MongoDB, PostgreSQL Languages: Java, Python, C/C++
    Featured Skill Java
    MapReduce
    Apache Kafka
    Cloud Computing
    Apache Hadoop
    White Paper Writing
    Academic Writing
    Google Cloud Platform
    Dask
    Apache Spark
    Research Paper Writing
    Apache Flink
    Kubernetes
    Python
  • $35 hourly
    • 5.0/5
    • (2 jobs)
    🚀 With 12+ years of experience, I’ve helped businesses save up to 30% in development costs while delivering high-performance web and mobile apps. Let’s build solutions that not only meet your needs but also drive your bottom line! I specialize in designing, developing, and scaling custom SaaS platforms, AI-driven applications, and enterprise-level mobile and web solutions. Whether you're launching a startup or optimizing an existing product, I bring technical excellence and a business-driven approach to every project. || Core Expertise & Services 🔹 Full-Stack Web Development Scalable web apps with React.js, Next.js, TypeScript, and Node.js High-performance backend architecture using Express.js, Laravel, Python, and GraphQL Database design & optimization (MongoDB, PostgreSQL, MySQL) 🔹 Mobile App Development Cross-platform mobile apps with React Native & Flutter Native iOS & Android development using Swift & Kotlin Seamless UI/UX with optimized performance 🔹 AI & SaaS Development AI-powered automation & chatbot development OpenAI, LangChain, and predictive analytics integrations Scalable SaaS solutions with secure API architecture 🔹 API Development & Third-Party Integrations REST, GraphQL & WebSocket API development Secure payment gateway integrations (Stripe, PayPal, Braintree) Cloud & DevOps solutions using AWS, Google Cloud, and Azure 💼 Imagine cutting your project timeline by 40%! With my expertise in full-stack development and AI, I create scalable applications that deliver real results. Partner with me and watch your ideas come to life while saving you time and money! || Recent Projects & Case Studies ✅ AI-Powered Resume Builder – SaaS platform with OpenAI-powered content automation ✅ Live Video Streaming App – WebRTC-based real-time video broadcasting ✅ Enterprise Workflow Automation – Streamlined business operations via API integrations ✅ E-Commerce Marketplace – Scalable, multi-vendor platform handling thousands of transactions ✅ Fintech & Healthcare Solutions – Secure apps with regulatory compliance 📈 Clients have seen revenue growth up to 50% through my tailored SaaS and mobile solutions. With 12+ years in the industry, I focus on creating cost-effective, high-quality applications that generate value. Ready to take your project further? || Tech Stack & Tools 🔹 Frontend: React.js, Next.js, Vue.js, TypeScript 🔹 Backend: Node.js, Express.js, Laravel, Python 🔹 Mobile: React Native, Flutter, Swift, Kotlin 🔹 Databases: MongoDB, PostgreSQL, MySQL, Firebase 🔹 Cloud & DevOps: AWS, Google Cloud, Azure, Docker, Kubernetes 🔹 AI & Web3: OpenAI API, LangChain, Solidity, Web3.js || Why Work With Me? ✔️ 12+ Years of Experience in end-to-end product development ✔️ Scalable, performance-driven applications built for growth ✔️ AI & automation expertise for modern business needs ✔️ Transparent communication and a problem-solving approach ✔️ Long-term collaboration & post-launch support 📩 Let’s Discuss Your Project I’m available for new projects and long-term collaborations. Contact me today to explore how we can build something exceptional together!
    Featured Skill Java
    MongoDB
    Amazon Web Services
    Spring Boot
    Spring Framework
    React
    SQL
    JavaScript
    Microservice
    Hibernate
  • $50 hourly
    • 5.0/5
    • (3 jobs)
    I am a software developer with diverse experience with different technologies and development methodologies. I have 6 years of .Net development experience, 5 years of Java J2EE development experience, and 5 years of PHP & Mysql development experience. A total of 8 years of industry experience. I am practical, articulate, and creative with strong problem-solving skills and an excellent knowledge of the software development life cycle from the inception to the release of the final product. I am a great team player and possess an unfailing eagerness to learn new technologies. My success in delivering high-quality, reliable solutions to clients reflects my professionalism and commitment to excellence. I ensure my client's satisfaction in all projects through my efficiency, close attention to detail, and ability to work independently. Also, my positive and proactive attitude enables me to work well with others. I am committed to delivering high-quality work that meets or exceeds my client's expectations. I am willing to learn new technologies and open to new challenges to provide the best possible solutions. If you have any questions or would like to discuss your project, please contact me.
    Featured Skill Java
    .NET Framework
    ArcGIS
    C#
    C++
    AJAX
    Perl
    PHP
    JavaScript
    Python
  • $45 hourly
    • 5.0/5
    • (6 jobs)
    Highly skilled engineer proficient in many facets of software development. Fifteen years of full-time and contract experience for companies such as MySpace, Encyclopaedia Britannica, and Bank of America. B.S. and M.S. in Computer Science with multiple internships including Argonne National Laboratory and Ernst & Young. Insatiable curiosity.
    Featured Skill Java
    Apache Solr
    J2SE
    XML Web Services
    Apache Lucene
    C#
    Apache Tomcat
    MySQL
    PostgreSQL
  • $60 hourly
    • 4.5/5
    • (32 jobs)
    I have more than 15 years experience in software development including design, coding, refactoring and documentation. Strong analytical and problem solving skills. Fluent in OOP, design patterns, functional/reactive programming, full stack web programming, microservices, MVC, GUI frameworks, databases, web sites, blockchain and cryptocurrency technologies. Proficiency with: Java, J2EE, Spring, Spring Boot, JSP, JavaScript, .Net, C#, JQuery, React JS, Vue.js, Node.js, Express, HTML5, C/C++, PHP, Python/Flask, Rust, SQL, Amazon Web Services - VPC, EC2, ECS, ALB/NLB, RDS, IAM, S3, SQS, SNS, SES, Alexa, LEX, CDK, DynamoDB, Cloud Formation, Terraform, Lambda, API Gateway, Cognito; KNIME, Wordpress plugins, Google Cloud Services, DigitalOcean, social integration - Facebook, Twitter, Google, Dream Factory, Ansible, Docker, Apache, GlassFish, Tomcat, Nginx, Ethereum, Web3.js, MySQL, PostgreSQL, SQL Lite, SQL Server, Oracle, Neo4j, Eclipse, Visual Studio, NetBeans, Git, Bash, Linux, Windows.
    Featured Skill Java
    Rust
    .NET Framework
    RESTful API
    Spring Framework
    React
    Amazon Web Services
    Node.js
    Python
    PHP
    C++
    JavaScript
  • $75 hourly
    • 4.5/5
    • (67 jobs)
    Technical Writing Experience I have 20+ years experience as a freelance writer with over 300 pieces of user facing documentation. I write user manuals, software module specifications, API documents, and software architecture diagrams. Have written for Samsung, Disney Interactive, Whirlpool, Maytag, Sony Computer Entertainment, Nintendo, Electronic Arts, ESPN.com, and many others. I am an expert in Microsoft Office and Visio. I am in expert in Google Docs. I have years of experience in Markdown and HTML. Embedded Systems Programming Experience I have 25+ years experience as embedded systems programmer. Experience in real-time environments in C, C++, and many different assembly languages. Experience with Raspberry Pi and Arduino. Experience with Zilog, ST6, ST7, ST8, ST9, 68000, 6809, Freescale Kinetis, and Microchip. Experience with Bluetooth, WiFi, RS-232, and ModBus. B.S. in Computer Engineering from Iowa State University.
    Featured Skill Java
    Content Management System
    C
    Android
    iOS Development
    User Manual
    Microsoft Office
    Technical Writing
    Objective-C
    Documentation
    Lucidchart
    Swagger
    Android App Development
    Raspberry Pi
    API Documentation
    Product Documentation
    Google Docs
    Microsoft Visio
    Embedded C
    Instruction Manual
  • $165 hourly
    • 5.0/5
    • (7 jobs)
    I have over two decades of experience designing, implementing, and maintaining applications that meet large, complex customer needs. I have taken many critical applications from pure vaporware to working. Much of my code runs in production for large financial institutions serving their most complex corporate clients. I am always interested in positions that provide a significant new challenge over what I have done in the past. Recent projects include: • I reviewed/audited a large Java codebase that had come to the client through merger and acquisition to confirm that the code was complete and had, in fact, all been delivered to them from the seller. • Designed and implemented REST APIs and other backend components deployed in Amazon AWS. These APIs process large volumes of payments for business and individual customers. Technologies used in this job include: • Java • Spring Boot • MySQL • ActiveMQ • Docker • Amazon AWS (ECS, EC2, RDS) • Linux
    Featured Skill Java
    JavaScript
    Python
    C
    PHP
    WordPress
    RESTful Architecture
    Linux
    SQL
    Perl
    Oracle
    Web Service
    Spring Framework
    API
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by 5M+ businesses