Sudoku program in java jobs

I'm in need of a customized Java program. I haven't decided on a specific purpose, but I'm looking for a skilled developer who can deliver a robust, well-structured program. The ideal candidate for this project should have a strong command of Java programming, as well as experience with program development for various purposes. The program may involve extensive data manipulation, network interactions, or other functionalities. Your ability to create clean, efficient code will be a big advantage. Please note that, as I haven't pinned down the exact requirements, being able to adapt and respond to shifting project needs will be crucial. Looking forward to hearing from you.

We are a direct, private money lender, and we need assistance remaking two of our loan program documents. Key Requirements: - Branding: The files should reflect the professionalism of our brand - Design: They should be visually appealing and engaging, suitable for a professional audience - Informative: The documents should be able to convey all of the information in a digestible manner - File Format: I need the final designs in an Adobe or Figma file format. - Output: we should be given two separate files We have included the two files to be remade + the company colors that we use in the contest.

My project involves packaging a Java application into a Docker image compatible with CentOS. This will extend the application's portability and scalability. Ideal Candidate: - Familiarity with Docker and Docker container management - Proficiency in CentOS Linux distribution - Experience packaging Java-based applications into Docker Images Requirements: - Transform the provided Java (or others compiled) program into a Docker image - Ensure the Docker image is fully compatible with CentOS - Verify the Dockerized Java program runs without hiccups on CentOS systems.

I'm in need of an experienced Android developer to update our Java-based app, originally designed for Android 5 KitKat, to work seamlessly on modern tablets. Key Requirements: - Improve User Interface: The project involves enhancing the app's existing UI. - Compatibility Upgrade: The current app is only compatible with Android 5 KitKat; the developer must ensure it functions smoothly on contemporary tablets. Additional Information: - The app currently consists of 6-10 screens or activities. - A new feature will be the integration of Bluetooth connectivity. -The app controls hardware via bluetooth, sends PWMs and reads ADC values and reads/writes to an rs232 info stream

I'm looking to recruit 10-20 affiliates for my upcoming essay writing competition. My core objectives for th...can take charge of tracking and managing the performance of these affiliates. Key Responsibilities: - Recruiting and managing 10-20 affiliates - Ensuring increased participation in the competition - Implementing strategies to generate additional revenue - Outsourcing tracking and management of affiliates Ideal Candidate: - Experience in affiliate recruitment for similar events - Proficient in strategies that enhance participation and drive revenue - Capability to outsource tracking and management efficiently - Excellent communication skills If you're a strategic affiliate manager with a proven track record in increasing event participatio...

...cold caller to join our team and assist in prequalifying low-income prospects for our revolutionary no-cost health benefits program. This is an excellent opportunity for individuals who are skilled in high-volume cold calling and have a passion for helping others access essential healthcare services. Responsibilities: -Make outbound cold calls to potential prospects to prequalify them for our no-cost health benefits program. -Conduct approximately 100-200 calls per day with a focus on efficiency and effectiveness. -Engage prospects in a professional and empathetic manner to gather necessary information. -Use qualifying questions to determine eligibility based on income level and current health coverage. -Clearly communicate the benefits of our pro...

I'm looking for a skilled software developer who is proficient in Java and familiar with the DJI drone SDK. Seeking individual with HTTP and DJI SDK experience to add features to DJI Ground Control Software. The application must transmit and handle HTTP REQUEST to server, display popup messages, play notification audio, and auto-upload waypoint to a selected drone. Key requirements: - You must have experience in software development on Windows OS. - Proficiency in Java is a must. Experience with DJI drone SDK is highly preferred. - The main feature to be added to the software is automatic drone flight path planning. Key responsibilities: - Integrate the DJI drone SDK into my existing software. - Implement automatic drone flight path planning feat...

I'm in need of a skilled and experienced games programmer to help me create a mobile game with a strategy genre. The ideal candidate for this project should have the following qualifications: - Proficiency in C++, Java, and Python, as these are the languages I'm familiar with and would like to use for this project - A proven track record in developing mobile games, with a preference for strategy games - Strong understanding of game design principles and mechanics - Ability to work collaboratively, take direction, and provide valuable insight and feedback - Excellent problem-solving skills and a keen eye for detail If you have the necessary skills and are passionate about creating engaging, high-quality mobile games, I'd love to hear from you. Pl...

I'm in need of a detailed and impactful email marketing campaign targeting 16,000 recent graduates. I will share the Email data. The campaign is designed to promote and generate interest in my upcoming "Training & Internship Program." related Webinar Inviting. I will share the email Content as well. Key Responsibilities: - Develop and execute a strategic email marketing plan - Create compelling content that resonates specifically with this audience, focusing on the benefits and opportunities the program offers - Employ best practices to ensure high open and click-through rates - Monitor campaign performance and make data-driven adjustments as necessary I'm happy to discuss further details about the project with interested freelancers....

...specifically looking for a PC program that can live monitor order flow in a DOM (Depth of Market), successfully identify three-digit numbers and subsequently provide a sound alert to notify me. Key Details: - The program needs to be fast to cater for frequent changes in millisecond time-frames. - I don't have a preference for a programming language. Python, Java, and C++ are all acceptable. - At this stage, I'm unsure which order flow software I'll be using. Therefore, the program needs to be built with adaptability in mind to synchronize smoothly with any potential order flow software. - A sound alert should be triggered whenever a three-digit number pops up. Ideal Skills and Experience: - Proficient in programm...

I'm in need of an experienced Java Script developer that can resolve a peculiar issue with my implementation. Here are the specifics: - All of the data I'm showcasing are ALL DAY events. - The events are not appearing in the Week and Day views, however, they do display as expected in the Month and List views. - I am using a version of that's not the latest. I'm looking for a professional who can: - Investigate the issue and implement a fix to ensure the ALL DAY events are correctly displayed across all views. - Offer advice on whether updating to the latest version of would help address the problem. The ideal candidate should have: - Profound experience in Java Script development. - A deep understanding of functionalitie...

Looking for an android developer Java,Kotlin,JSP, Servlets, MQ series, Hibernate, Python, Microservices, Swings, WebSphere-Portals, HTML5, Bootstrap, JavaScript, Bigdata, Linux Frameworks Android Mobile App Development, Spring boot, Struts, Hadoop This will be ongoing

I'm seeking a profi...and captivating scenario-based learning modules for a training program. This project will benefit from someone with: - Prior experience and expertise in creating content for various training programs - Deep understanding and knowledge in leadership development and employee engagement - Experience in designing scenario-based learning material which engages the trainees and contributes to better learning outcomes Your key role will be constructing easy to understand, compelling interactive learning scenarios ensuring a high degree of user interactivity that will assist the comprehension of the training programs. It's important not to forget to incorporate elements of fun and engagement within the content. Proven experience in...

I'm in need of an experienced Android developer to create a productivity app that primarily focuses on calculations. Key Features: - The app will be centered around calculation functions - Users should be able to make basic arithmetic calculations - The app needs to be user-friendly and intuitive for quick calculations Ideal Skills and Experience: - Strong background in Android development, proficient in Java or Kotlin - Previous experience building productivity apps - Prior experience working with calculation functions - A good understanding of UX/UI in mobile apps

I'm a beginner in coding and I'm trying to understand how pathfinding algorithms, especially greedy algorithms, work. As part of my learning process, I need a professional who can create a maze-solving program for me in the C language. Here's what I need: - The program should be able to tackle mazes of varying sizes. The minimum size should be 7x7, and the maximum size should be 20x20. It's important that the program can handle non-square mazes as well. - The maze should be solved using the greedy algorithm. - The output of the program should be a text-based representation of the solution, showing the path from the start to the end. For this project, I'm specifically looking for someone with experience in coding, ...

I'm in need of a skilled programmer to develop a script that can serve as both a Man-in-the-Middle (MITM) and a Reverse Proxy tool. The primary goal of this script is to assist me in intercepting network traffic and bypassing certain network restrictions. Key Project Requirements: - The script should be compatible with Windows, MacOS, and Linux. - It should effectively intercept network traffic and support the following network protocols: HTTP, HTTPS, and TCP. - The script should also have the capability to act as a Reverse Proxy tool when needed. Ideal Skills and Experience: - Proficiency in programming languages like Python, C++, or Java. - Experience in developing network security tools or reverse proxy systems. - Knowledge of network pr...

The developer should have the following skills and experience: 1. Proficient in Java, Kotlin and other programming languages; 2. Have a deep understanding of Android platform, familiar with Android SDK and related tools; 3. -- If you have an already published app you can! Out -- for s-a-l-e! . If you are interested, please feel free to contact us and look forward to further communication with you.

...experienced Android developer to work on a self-help app that targets elderly users. The primary goal of the app is to track the user's progress. Key Features: - User Registration and Login: The app should incorporate a straightforward registration and login system to ensure user engagement. - In-App Purchases: It's essential that the app supports in-app purchases to enable users to access premium content or features. The developer should have the following skills and experience: 1. Proficient in Java, Kotlin and other programming languages; 2. Have a deep understanding of Android platform, familiar with Android SDK and related tools; 3. -- If you have an already published app you can! Out -- for s-a-l-e! . If you are interested, please feel fr...

I'm seeking an Android developer with a strong grasp of Java programming, Android SDK, and UI/UX design for a straightforward project. Key Features: - The app should be capable of user authentication. Primary Goal: - The main objective is to create a basic calculative with admin approval of features and scrollong images which can be changed application. App is similar to video attached The ideal candidate will have experience in developing clean, user-friendly Android applications with a focus on accurate calculations. Experience in UI/UX design is a plus, as we aim to provide a sleek and intuitive user interface.

...developer to create a self-service car wash system that can be used on both Android and iOS platforms. The system should allow users to easily locate nearby car wash stations, select their preferred service package, make payments, and receive notifications. The ideal candidate should have expertise in Android and iOS app development, as well as experience with GPS integration, payment gateways, and push notifications. 1. At least 2 years of experience in Android application development 2. Proficient in Java or Kotlin programming languages and Android development tools and frameworks 3. Have a certain understanding of mobile application design and user experience 4. If you have published applications for s-/--a--/--l---/-e, I am interested and look forward ...

I desperately need to get apps, especially those available on the Google Play Store. My interests lie in a broad range of application types, including gaming, tools, lifestyle, entertainment, and news applications. All applications except finance, wallpapers. And requires a certain amount of downloads. key point: Have a certain number of downloads - The apps should be available on the Google Play Store. Make sure the source file signature file is complete. - I am particularly interested in games, tools, lifestyle, entertainment and news apps. Your role is to sell me the rights to your application. Experience using applications in these specific categories (games, tools, lifestyle, entertainment, news) will be a major advantage.

...implement it in an API testing project at work. Key Requirements: - Experience in Java, BDD, Serenity framework, and Rest Assured - Able to guide and teach on: - Understanding an automation project - Creating and executing tests - Reporting - GIT Integration The project is centered around API testing, so any specific experience here is a plus. I'm looking for a patient, experienced professional who can help me grasp the fundamentals and guide me through the intricacies of implementing automation with the mentioned frameworks. There are existing scripts in place which I need to understand and also create new scripts and execute on my own. Ideal Skills: - Strong Java background - Experience in BDD - Expertise in Serenity fr...

...solve advanced level CTF challenges, in various categories. I need someone who can tackle challenges in Web Exploitation, Binary Exploitation, Cryptography, as well as other categories like web, forensics, osint, and more. Key Responsibilities: - Solve advanced level CTF challenges in multiple categories Ideal Skills and Experience: - Extensive experience with CTF challenges - Proficiency in solving challenges in Web Exploitation, Binary Exploitation, Cryptography, web, forensics, osint, etc. - Proven track record of solving advanced level CTF challenges - An understanding of security concepts Please note that the specific programming languages or platforms to be used in solving the challenges are not specified, but your background in...

...text chat as the core communication channel. Here's what I'm envisioning: - Group Messaging: The core communication method in use will be group messages. I want the developer to build a robust system where users can create, engage, and manage group chats efficiently. Experience in building similar platforms will be a significant advantage. - Media Sharing: The chat interface should be modern and dynamic, capable of handling in-message media sharing. This means users should be able to share images, videos, and other rich media content within the chat conversation seamlessly. If you've designed such interfaces before, you're the person I'm looking for! Skills such as Java, Python, or PHP are desirable. Exceptional knowledge of web s...

OTA upgrade tool program Pure command line tool Parameter control Output log to file Including nginx view log directory function configuration use UDP

I am looking to honor the life and achievements of a special person who has passed away by creating a printed program for a celebration of life event. Key Points: - The program should include a biography section detailing significant achievements and milestones in their life. - An 'order of events' section to detail the ceremony's schedule. - possible photo/and memorable moments in their life. The project would benefit from a freelancer writer with possible graphic design experience, particularly in program or booklet design. Experience in empathetic, commemorative design would be a plus. It's important that the freelancer can create a tasteful and respectful tribute, providing closure for family and friends. Candidate...

I'm seeking assistance with an urgent issue that's emerged with my softphone engine. - **Operating System**: My system is running on Windows. - **Programmin...issue that's emerged with my softphone engine. - **Operating System**: My system is running on Windows. - **Programming Language**: Unfortunately, the programming language of my softphone engine has been omitted. I believe it may be C#, Java, or C++. It's imperative that the freelancer is comfortable with these languages to handle the issue. - **Timeline**: I'm in need of immediate assistance to solve this problem. Ideal candidates should be able to troubleshoot softphone issues and have experience with Windows software development. Experience with C#, Java, and C++ is a plus. The abi...

...paper, and passport photos, and saving them in JPEG format. As such, the app should be able to: - Recognize and accurately scan ID cards, receipts, invoices, paper, and passport photos - Provide a seamless and user-friendly experience for scanning documents - Showing Auto or Manual Edge Cropping, Image Rotation - Using OpenCV - Native Android (Android Studio), Java I would like the app to be specifically tailored for Android, ensuring a smooth user experience and a clean, intuitive interface. Ideal Skills and Experience: - Proficiency in Android development - Experience in developing document scanning apps - Familiarity with image recognition and processing - Ability to create a simple and user-friendly interface - Knowledge of saving documents in...

I am seeking a proficient programmer to build a program that helps identify profitable product leads. The application should do the following: - Scrape product UPCs from gowholesale.com. You don't need to integrate a login system, as access to this information is free. - Use UPC data to perform a search on eBay to see if the item is available on the platform. - Generate a profit prediction report based on eBay's item purchase history. The ideal freelancer for this job would have great scraping skills, experience with eBay's API, and be able to develop a friendly user interface. A background in eCommerce profitability analysis would also be advantageous. Key programming languages for this job include Python and JavaScript. Previous experience with web scrapi...

I have a source code for android video streaming app in java, xml, and i need to change the design of the app frontend I am looking for someone who can make changes to android app code design and recreate the frontend. below i have attached the design of my app, and want to reformat it according to zee5 app design. If you feel its a good fit for you, i welcome your bid. thanks.

Overview: We are looking for an experienced Java developer to refactor an existing code base to incorporate several design patterns and improve overall code quality. This project involves enhancing the structure and maintainability of the code by integrating various design patterns, such as Dependency Injection (DI) using Google Guice, Listener, Builder, Singleton, and, optionally, Factory design patterns. The ideal candidate should understand these patterns strongly and have experience refactoring legacy code. Key Responsibilities: 1. Refactor Service Classes with DI Pattern: - Utilize Google Guice API to implement Dependency Injection across all service classes. - Ensure that all dependencies are injected and managed by the Guice framework. 2. Apply Listener Design Pattern...

...experienced Java developer who can integrate a cloud-based database into my project. Ideal Skills: - Strong proficiency in Java - Prior experience with database integration - Specifically, experience with cloud-based databases, Microsoft Azure in particular, is a big plus The Project: - Your primary task will be to integrate Microsoft Azure, a cloud-based database, into an existing Java project. - The project already has a well-defined structure and the database will serve as a key component. - The database integration should be secure, efficient, and scalable, meeting the highest standards. - There will be no need for user authentication or API integration, as this project is solely focused on database integration. Please only apply if you have ...

I'm requiring a proficient Java developer for a college project. The main task will be building a web application along with database integration. I'll need you to implement vital functionalities, such as: - A user registration panel - A user login page - Fee structure - Contact us section - Admin as well as user registration option - Subjects and courses - Basic website navigation functions For the front end, HTML and CSS skills are necessary to render a clean and minimalist design. It's vital you're experienced in these domains and can provide examples of your past work. Looking forward to your proposals.

I need your help, I have a thesis for college, I have a month left and I have 2 chapters to finish. in those 2 chapters i need your help on coding. my subject being the digitization of the conversation between a person with hearing loss and a doctor. my desire from you is to program my java application itself as long as you can, it doesn't have to be complete finished. the application has the idea of ​​how you enter it, it puts you in a picture interface, the deaf-mute person does his sign language, and the translation appears below. if you can help me with explanations and about which package to buy from you that would be perfect, thanks! 1) Set up the Java project and the necessary libraries for computer vision and machine learning. 2) Capture vid...

I'm in need of an Android developer with experience in Java and Kotlin who can handle issues with fingerprint scanner devices like Futronics FS80H and Mantra MFS100 on Android 14. Key Responsibilities: - Diagnose and resolve compatibility issues with the latest Android 14 version. - Ensure the scanner can correctly detect fingerprints. - Ensure the scanner is responsive and functions as expected. Ideal candidates should have: - Proven experience working with fingerprint scanner devices. - Expertise in Java and Kotlin for Android development. - Strong knowledge of Android 14 and its compatibility requirements. - A track record of troubleshooting and resolving technical issues. This is an urgent project, and I'm seeking someone who can deliver ...

We are seeking an experienced full stack developer proficient in Angular, Typescript, Java, and Spring to join our team for an exciting HR Tech project. This project aims to streamline the onboarding process for candidates while enhancing the efficiency of recruitment for companies. Key Features: 1. Onboarding Process: The platform will feature a comprehensive onboarding process for candidates, designed to facilitate a smooth transition into their new roles. This process will consist of four main steps: - Technical Quiz: Candidates will undergo a technical quiz to assess their domain-specific knowledge and skills. - Audio Recording: Candidates will be prompted to record audio responses to predetermined questions, allowing recruiters to gauge communication skills and confid...

I'm in search of a skilled automation tester who has ample experience with Java. My project involves developing a new module that requires comprehensive functional testing. Use Frame work is POM Key Responsibilities: - Implement, design, and create functional test automation frameworks with Java - Thoroughly perform functional testing on new modules Ideal Skills and Experience: - Proficient in Java - Extensive experience in functional testing - Familiarity with Selenium Preference will be given to those who can demonstrate specific experience with using Selenium for automation testing in Java. Remember, quality is crucial. I'm not looking for rushed testing, but a methodical and precise approach. Get in touch. ...

...and engaging trainer program geared towards advanced-level participants, focusing on training skills Key Requirements: - Free Training program by Malaysian Government for those who have started working from 1st January 2024 -Self employed and freelancers are welcomed! - The program will be delivered through a mix of online modules and in-person workshops. You should be able to structure the content to be engaging and effective in both formats. - Leadership Training: The main focus of this program will be training in leadership skills. Your experience in leadership development and training is essential. Ideal Skills and Experience: - Proven experience in creating and delivering leadership training programs - Expertise ...

I'm looking to expand my current portfolio and am interested in purchasing Java-based apps that are already on the Google Play Store. The types of apps I'm particularly involved in include games, utilities, and productivity software. - Types of Apps: Games, Utilities, Productivity - Type of Purchase: Both Individual apps and app bundles are welcomed. - Programming Language: Java-based apps only. For this project, an ideal freelancer would be proficient in app development using Java and has direct experience in uploading and maintaining apps on the Google Play Store. Any freelancers who already have ready-apps that meet the criteria would be preferred. Please include screenshots or links to your app/s available on the Play Stor...

The program must be compatible with Windows 10, which searches for data inserted from a CVS file, therefore which has the possibility of loading a CVS file (one or more files) which, through a search window, tells me whether a certain value (alphanumeric) is present in the CVS file. If you have uploaded more than one, please tell me which one it belongs to. I already have the initial screenshot to show when starting the software and the one of the search window that I will provide, upon acceptance I will also provide a flowchart that explains in detail.

...have a specific trading strategy in mind that I would like to automate. You will need to work with me to understand and implement this strategy in the trading bot. - Automatic execution of trades: The system should be able to automatically execute trades based on predefined criteria. This will require seamless integration with the MEXC platform. Skills and Experience Required: - Strong knowledge of algorithmic trading and cryptocurrency markets - Proficiency in building automated trading systems, particularly on the MEXC platform - Experience in developing and implementing trading strategies - Understanding of real-time market data analysis - Proficiency in coding languages such as Python, Java, or C++ Please only apply if you have a proven t...

...experienced freelancer to help me with a mobile app project that comprises both UI/UX design and Java Backend development. Key Requirements: - Proficient in UI Design: You'll need to create a sleek, intuitive, and user-friendly interface for a mobile platform. - Java Backend Development: The app needs to have a robust and efficient Java backend that can handle the expected load and ensure seamless functionality. - Mobile Platform Experience: You should be well-versed in mobile app development, ensuring the final product is optimized for mobile use. Specific Features: - User Authentication: The app will need a secure and reliable user authentication system. - In-App Purchases: You'll need to implement an in-app purchase system...

I'm looking for an experienced Android developer to create an app that focuses on e-commerce and product management. Key Features: - Social Media Integration: The app needs to connect seamlessly with... Key Features: - Social Media Integration: The app needs to connect seamlessly with social media platforms. User Authentication: - The app should have a user authentication system. Users should be able to log in or sign up through their social media accounts. And google account Ideal Skills and Experience: - Proficient in Android development (java) - Experienced in integrating social media APIs. - Familiar with user authentication systems, especially social media login. google login Please include samples of your past work that demonstrate your experienc...

I'm in search of talented coders with a passion, education (may be self or collage etc.) with expertise in Python, Java, and C++ to help me develop a new software application for Windows. Key Project Details: - Programming Languages: Proficiency in Python, Java, and HTML is essential for this role. Your role will involve: - Working on the software development process from conception to final testing and deployment. - Ensuring that the application is optimized for all users and clients, considering the specific requirements and features of this platform. Ideal Skills and Experience: - Strong programming skills in Python, Java, and C++. - Proficiency in developing software applications for Windows. - Experience in creatin...

I am working on a compiler construction project using ANTLR4+Java (using visitors to walk the abstract syntax tree and visit key nodes), and I need help with semantic analysis.

I'm seeking a proficient software engineer adept at Java, Python, and C++, who will assist me in website development. The core assignment entails creating a program specifically for WordPress, my preferred CMS. Ideal Skills and Experience: - Comprehensive Java, Python, and C++ knowledge - Previous experience with website development - Proficiency in WordPress CMS Your role will focus on developing a program tailored to my needs, emphasizing functionality and integration within the WordPress platform. It's essential to have a hands-on approach, be detail-oriented, and dedication to creating high-quality, reliable software. Applicants should show a portfolio or examples of previous related work. This will aid in understanding your ...

In this project, will be developing an code to sense, share and control another application on a nearby node. The application can be mobile, web or desktop. The application is required to: 1. Sense a nearby node. When a node comes within the communication range and also when it moves out from this range. An indication should be there when a node is sensed or moved away. 2. Share some content. It can be some message, file, chat etc. 3. Control minimum one feature of the remote node e.g., volume, brightness, wallpaper etc.

...download of reports in PDF format for each subject consulted. Main Features: 1. Intuitive user interface to access the Colombia Rama Judicial file analysis system from Infolaftsearch. 2. Functionality to upload files downloaded from the Colombia Rama Judicial website. 3. Processing of uploaded files to extract and structure the required information*. 4. Visualization and filtering of the list of processes. 5. Detailed view of specific process information. 6. Temporary storage of uploaded files in the browser. 7. Functionality to delete data being processed and start a new analysis. 8. Automatic process to delete old records from the database. 9. Recording of deletions for audit and regulatory compliance purposes. Technical Requirements: - Development in...

...that queries multiple external sources (18) through APIs, web scraping, and web page reengineering processes to extract information and structure it in the expected format. The system should generate a record of each query made, indicating whether results were obtained, no results were obtained, or if the source was not available. A document detailing all the sources of information from which data should be extracted will be provided. Main Features: 1. Automatic Querying of External Sources: Perform queries to multiple external sources according to the provided specifications. 2. Data Structuring: Process the obtained information and structure it in the required format. 3. Query Log Generation: Create a detailed log of all queries made and their results. 4. Response Handl...

I am in search of a professional coder with proficiency in a variety of programming languages to assist me in several ongoing and upcoming projects. The nature of the tasks may vary from website development to application development and data analysis. I need a versatile individual who can adapt to different project requirements and deliver high-quality results. The key functionalities and features required for these tasks may include user authentication, database integration, and payment processing. Ideal candidates should possess: - Strong coding skills in Python, Java, and JavaScript - Experience in website development, application development, and data analysis - Proficiency in user authentication, database integration, and payment p...