I need a full time java coder jobs

I have procured the Cryptitan script and require an experienced coder to install it promptly. If you have prior experience with such an installation, then this could be a quick task for you. Key tasks would include: - Installing the Cryptitan script on my platform. - Testing post-installation for any bugs or issues and resolving them. Due to its urgent nature, proficiency in handling Cryptitan scripts and track record of timely deliverables is especially useful. Skill in customization, UI design, security enhancements, or software integration may be helpful for possible future tasks. However, a successful and swift installation is the immediate priority. Can't wait to collaborate with the right professional on this.

I need some crucial updates made to my Auction android app Java template Tasks: •Showing a price in item button • Showing the highest bid • setting default currency The project needs completion as soon as possible with responsible cost. Consider getting in touch if your skills match and you can deliver with speed.

I'm in need of a full-time, 1st level support professional proficient in German. Your role will primarily involve: - Communicating with customers via Phone and Email. - Assisting with technical issues related to our SaaS product. The ideal candidate should possess excellent communication skills in German and English, a strong understanding of SaaS products, and prior experience in a technical support role. This is a full-time role (40 hours per week) so ensure you have the capacity to commit to this workload.

I am seeking a professional with expertise in accounting for a part-time position. The engagement will require them to work twice a month. Their main responsibilities will be: - Financial statement preparation - Bookkeeping - Payroll The ideal individual should have extensive experience managing these tasks. Proficiency in the use of Excel spreadsheets as an accounting tool is a must. As this is part of the software I currently utilize, I would greatly appreciate candidates who can effortlessly navigate this tool in fulfilling their duties. In-depth understanding of tax laws and regulations will be considered an added advantage.

As a rapidly expanding organization, we're urgently seeking a dedicated, full-time customer service representative with fluency in both English and Hindi. Key Responsibilities: - Addressing and troubleshooting customer issues effectively - You will need to be in the United Kingdom Skills and Experience Required: - Excellent communication skills in both English and Hindi - Proficient in using various communication channels such as Phone, Email, and Live chat - Ability to troubleshoot and resolve issues in a timely and respectful manner This role requires a commitment of more than 8 hours per day, with an emphasis on delivering exceptional customer service consistently. Interested candidates must have a proven track record in...

As a client, I'm seeking a skilled developer to design a reporting tool. Key Requirements: - Proficiency in Java, Python, and C++. The chosen developer must have extensive experience developing with these languages as the reporting tool will need to be compatible with all. - The reporting tool needs to have specific features including data visualization and the ability to export data to PDF/Excel. - The tool must be designed to connect to a database for importing data. Ideal Skills and Experience: Experience in developing reporting tools, expertise in data visualization, database connectivity, and data exporting. Familiarity with Java, Python, and C++ is mandatory. Experience in handling data in various formats and creating customi...

I'm seeking a talented photographer to create a collection of color pictures that focus on the historical development of an urban rooftop over three years. The goal is to show changes in the roof's condition across the years, so I would like special emphasis on this aspect in the photos. You should be skilled in urban and architectural photography and have an eye for detail. Prior experience in historiographical or progression photography will be appreciated. The project offers a fantastic opportunity to showcase the art of capturing transformation over time in an urban structure.

In need of a highly skilled full-stack developer proficient in Python and JavaScript. The project specifics are not detailed yet, however, prior experience in a wide variety of projects would be beneficial. Skills and Experience Required: - Strong expertise in Python and JavaScript - Wide-ranging project experience - Excellent problem-solving skills - Proven ability to work independently and meet project deadlines Please include your previous full stack development experiences in your proposal. Your ability to adapt to new projects will make you a stand out candidate.

I am in search of a talented WordPress coder who can help with my website project. Although I've already got a domain and hosting, I haven't yet determined the specific features, functionalities, or plugins needed. So, your expertise and advice will be greatly appreciated in these areas. Ideal Skills and Experience: - Comprehensive knowledge of WordPress and potential functionalities - Experience with advising on and implementing WordPress features - Experience with custom theme designs, e-commerce functionality, membership registration and login - Knowledge of various plugins beneficial, such as SEO optimization, social media sharing and contact form plugins Looking forward to insightful suggestions and a productive collaboratio...

...experienced Full Stack Developer skilled in HTML/CSS, JavaScript, and Python. The project involves the development of a highly dynamic and interactive website, and as such, a knack for creating engaging user experiences is a key requisite. Features to be implemented include: - User Login/Registration system: Facilitation of user accounts creation and management is a must. - E-commerce features: There will be product listings, purchase facilitation, and management of transactions. - Live Chat System: Real-time conversation capability for customer service is vital. - Integration of APIs: Specifically, Stable Diffusion API, Background Removal API, and T-shirt Mockup APIs require seamless integration into the site's structure. A succe...

I'm seeking a software developer proficient in Python, Java, or C# to create an in-house task management system from the ground up. A professional with experience in developing task management software would be ideal for this role. Here's what I expect: - Comprehensive Understanding: As the project will be a vital tool in managing our daily operations, your thorough understanding of our needs and your ability to deliver on them is crucial. - Expertise in Various Programming Languages: You might not have indicated your preferred programming language, but being versed in Python, Java, or C# is an important requirement for this task. - Relevant Experience: Demonstrable experience in creating a task management software is a ...

I have a mysql query which loads customers email addresses thru a php script. inside the php script it loads all customer email and usually only takes about 5 seconds then also in the script it loads any emails which have been BLOCKED or BLACKLISTED these come from another table then it allows me to filter the emails and remove the blocked emails from the mailing list before sending emails. BUT HERES THE MAJOR PROBLEM as my blacklist or blocked list grows the query time seems to GROW EXPONENTIALLY ive went from 5 secs with 0 blocked emails to 70 secs with just 300 blocked emails its taking around 5 secs for every additional email i add i had a look at the query it doesnt seem excessive but something is slowing it down i need...

...looking for a talented programmer who can develop a correspondence registration application, hosted on the company's server with remote access via web. Specific programming language proficiency isn't specifically required, however skills in Java, Python, or PHP would be an advantage. Features and Details: - A more detailed feature list will be sent via email. - However, the application is expected to have standard features like user authentication, search functionality, and file attachments. Application Information: - Please include your budget and implementation time in your proposal to be considered for this position. Ideal Candidate: - You should have prior experience in web development and familiarity with server setups. ...

I am looking for a creative and proficient individual who can transform my truck into an engaging and vibrant mobile billboard for my brand. - The design should incorporate my existing logo and align with the company's brand aesthetic, focusing on a lively and colorful style. - I am interested in a full wrap for the truck. As such, the ideal candidate should have experience designing eye-catching visuals spanning entire vehicles. - The purpose of this design is brand promotion. Consequently, it should be able to capture attention, stimulate interest, and leave a memorable impression among viewers at a glance. Skills and experience needed: - Expertise in graphic design - Previous experience with vehicle wrap design, - ...

We are seeking a highly skilled and experienced HCL DX Developer to join our team on a contract basis. In this crucial role, you will play a pivotal role in developing and maintaining innovative solutions using the HCL DX platform. Responsibilities: 1) Design, develop, and implement features and functionalities using HCL DX modules (Portal, WCM, DXM) 2) Leverage HCL DX features to create user-centric and engaging digital experiences 3) Develop reusable components, scripts, and portlets within the HCL DX framework 4) Integrate HCL DX with external systems via APIs for seamless data exchange 5) Implement best practices for content management, personalization, and security within HCL DX 6) Collaborate closely with designers, content creators, and stakeholders to ensure ...

We're in the final stages of a project and running up against a tight deadline. Our team requires an experienced Full Stack Developer, proficient in frontend and backend development, to help bring it all together seamlessly. We're lacking the time to create design mockups or wireframes, so we're depending on you to use your expert judgement. Key Tasks: * Frontend Development: Design and implement the user interface using JavaScript and React, the technologies our current developers have been using. * Backend Development: Work with our team to ensure that everything behind the scenes runs smoothly. Ideal Skills and Experience: * Strong skills in JavaScript and React * Proven experience in frontend and backend development * Ability to work within...

I am looking for an experienced developer who can efficiently build an application for Android, Web, and iOS platforms. The ideal candidate should have: - Proficiency in Java and JavaScript programming languages - Experience with React Native and AngularJS frameworks The project requires the development of a feature-rich, user-friendly application. The developers will be expected to work closely with me to ensure the product meets my exact specifications and offer suggestions for improvement where needed. The successful applicant will have a proven track record of creating quality applications across multiple platforms. Prior experience in a similar role will be highly regarded.

I'm after a seasoned Java Developer proficient in Spring Boot for an mini home loan application project. Attaching the requirements below , please go through. Please note the strict budget is Rs1000 INR. - User Registration and Login implementation - Database Integration - API Development No specific functionality has been defined yet, but the main objective could range from building a web application to creating a RESTful API or integrating with existing systems. Your application should demonstrate your fit for a dynamic project environment where objectives might evolve over time.

I'm hunting for an equipped Full Stack Developer (4+ years experience) with a proficient understanding of .NET Core, C#, Azure DevOps, CI/CI, Telerik and Angular. The ongoing project involves ERP development for procurement, human resources, project management, and data collection modules. The successful candidate must also be capable of handling Razor view engine operations. A developer who can effortlessly handle these tasks and is able to communicate in Arabic would be the most suitable for this project. Your role will be vital to the continuous development and evolution of our enterprise software systems. Your proficiency, skill, and commitment to the task will greatly influence our project success. - Required Skills: Proficiency in C#, .NET Core, Azure DevO...

I need a proficient and creative software developer to create a business software specifically for Android. Requirements: - Proficiency in Java, as this is the preferred programming language for the project. - Extensive experience in business software development, preferably with a portfolio of prior work to showcase. - The software needs to be Android compatible, not for Windows, Mac, or Linux. - Must have expertise in creating user-friendly interfaces, with the understanding that the software will cater to business professionals. - Effective communication abilities to provide regular updates on the project's progress are strongly preferred. Ideal skills: - Expert in Java programming. - Extensive experience in creating business s...

...experienced full stack developer to assist me in tying together a nearly complete Python/Django codebase. Your responsibilities will encompass: - Building out a user-interactive front-end interface - Integrating and coordinating with the Django back-end - Streamlining the code deployment process - Implementing file upload functionality - Ensuring smooth API integrations The codebase is fundamentally in place. Mainly, it needs some touching up and migration assistance. The ideal candidate will have a solid background in Python and Django, comprehensive knowledge of front-end and back-end integration, an understanding of file upload processes, and efficient execution of API integrations. Experience with code deployments is a must. Join me in refin...

I am seeking an experienced HTML coder with an eye for aesthetics and attention to detail who can swiftly handle modifications to my website. The project needs to completed in the next 3 to 4 hours. The successful freelancer will be responsible for two key tasks: 1. Changing the layout: - Elements on the page need rearranging. - Content is appearing overly stretched and needs to be resized to present more appropriately. This refers to both text and images on the site. 2. Debugging: - There are several bugs on the site that need attention as part of this update. The successful applicant should be proficient in HTML, CSS, JavaScript, and have a good understanding of web aesthetics and layout design. You should also have a strong track re...

I'm looking for a skilled software developer to create a PC software aimed at testing typing speed. Here's what I need, in detail: - English language test: The software should support typing tests in English as this is the primary language to be tested. - Graphics and User Interface: It's essential that the software is user-friendly, easily navigable, and visually engaging. - Performance: The software must be capable of accurately measuring typing speed, including words per minute and accuracy percentage. Ideally, the freelancer undertaking this project will have: - Proficiency in programming languages suitable for software development such as Python, Java, C++. - Experience creating interactive and visually appealing UI design. - Past e...

I'm in need of an expert GoLang developer to design and implement a function that will establish WebSockets for each device connected for the primary purpose of data communication. This will involve sending and receiving data in real-time for immediate processing. Key capabilities include: - Proficiency in GoLang and WebSocket programming. - Experience with handling multiple types of data communication mediums (namely textual messages, binary data, and JSON objects). - Ability to construct a system where the WebSocket can reciprocate data to the connected clients as and when required. - Strong understanding of real-time data processing. Proof of past successful implementations will be a positive attribute when considering applicants. This p...

I am seeking the assistance of a meticulous and experienced professional for the transcription of legal documents. Your task will be to transcribe English audio files manually, creating a written draft in a Word document that closely mirrors the oral transcript. • Language: English • Document Type: Oral transcripts turned into Word documents • Level of Accuracy: You must follow instructions per oral dictation The perfect candidate for this job should showcase excellent English language skills, legal jargon expertise, and is familiar with a wide range of legal documents. Above all, I require absolute accuracy and close attention to detail. Prior experience in legal transcription or related fields is preferred. Proficiency with Micr...

I'm currently on the lookout for a full-time software developer with proficiency in multiple programming languages namely Java, Python, and C++. I am flexible about the level of experience the candidate holds, so recent grads with strong programming skills are also welcome. The potential candidate will primarily be responsible for the following: - Front-end development: You'll be in charge of coding and modifying our website, from layout to function, aligning with our design specifications. - Back-end development: You must be able to handle data and also work out the logical functioning of the application or website. - Database management: You will be responsible for organizing and managing our company's data efficiently. Candidates wit...

I am in need of a professional service to mow my medium-sized lawn, which ranges from 1,000 to 5,000 square feet. This is a one-off task. Key Responsibilities: - Thorough and even lawn mowing across all areas Ideal Skills and Experience: - Proven experience with lawn care - Attention to details - Ability to work without specific guidance as there are no specific areas requiring extra attention.

I'm looking for an experienced developer to create a frontend desktop application for my existing python code. - Operating System: The application should be compatible with Windows. - Programming Languages: I'm not particular about the exact language, as long as it's broadly-adopted and effective for desktop apps. Feel free to use Java, C++, Electron, or relevant language you're comfortable with. - Design: There isn't pre-existing design for this app, so I'm expecting freelancers to bring their creativity to the table. However, User-friendly and intuitive interface is a must. Ideal skills: - Strong background in desktop application development - Familiarity with any of the following languages: Java, C++, Electron - Good UX/UI ...

As an established business, I'm in search of an experienced full stack developer well-versed in JavaScript. The primary task for this project will be to develop a comprehensive web application primarily focused on implementing an efficient online booking system. Essential skills and experience for this job: - Proven experience as a full stack developer - Proficiency in JavaScript - Extensive experience in designing and implementing online booking systems The detailed requirements of the project are as follows: - Develop a user-friendly interface for easy navigation - The core functionality will be an online booking system, enabling users to manage their appointments effectively - Implement necessary security measures to ensure user data is safegu...

I am looking to create a cutting-edge, engaging website for my dance class. The site should not only captivate potential students but also include key functionalities that will streamline the administrative operations of my class. Key features should include: - Class Schedule and Registration: An easy-to-navigate schedule of upcoming classes and a feature for online student registration. - Instructor Profiles: Page for instructor bios to highlight their skills and backgrounds. - Photo and Video Gallery: A sleek, user-friendly gallery to showcase photos and videos from previous performances and classes. - Chatbot: A real-time, interactive chatbot for immediate communication and engagement with potential and current students. - Payment Gateway ...

I am seeking a talented professional with a keen eye for modern aesthetics to completely transform the interior and exterior of my house. Key Areas: - Interior Design: The prime focus is on revamping the Living Room, Bedroom, and the Kitchen. Creativity and a strong knack for spatial planning is a must. - Exterior Design: The outside of my home needs an uplift as well, so experience in landscape design or outdoor aesthetics is preferable. Preferred Style: - My taste leans towards modern design. Kindly keep this in mind while putting forward suggestions and concepts. Ideally, I am looking for someone who is comfortable with both traditional and digital design methods and has a good understanding of today's trends in home design....

I am seeking an experienced individual to perform a migration of my Java application hosted on a monolithic architecture to AWS EC2. Key Objectives: - The application needs to retain its functionality and performance during and after the migration. - We aim to enhance the scalability of the system. Skills and Experience: - Proficient in Java. - Experience in the migration from monolithic systems to AWS EC2. - Knowledge in developing and maintaining cloud systems. - AWS Certified is a plus. Applying for The Role: I'll be reviewing applications based on their relevance to this migration project. Thus, domain-specific experience is a must for a successful collaboration. Please add your relevant past work, experience, and a...

I'm in need of a well-experienced full-stack developer to create a website that serves the primary purpose of selling products/services. The key functionalities I want it to have are: - User registration/login system: Allowing for a seamless and secure user experience. - E-commerce integration: Essential for managing online transactions and product listings. Your skills will encompass both front-end and back-end development, with an understanding of creating intuitive user interfaces as well as solid and secure databases. Knowledge of e-commerce platforms and development of user authentication systems will be particularly appreciated. Let's bring this robust sales-focused site to life. and important : when the user wants to buy a...

I'm in search of an individual who can assist me on a part-time basis with some web development and design work. The ideal candidate should be proficient in both fields and be able to handle a range of tasks. Job Requirements: - Proficiency in various web development skills such as HTML, CSS, JavaScript and others. - Solid grasp of design principles and adept with design software like Adobe Creative Suite. - Ability to balance multiple projects simultaneously and meet deadlines. - Good communication skills to understand and implement project requirements effectively. Preference will be given to those who have prior experience in similar roles and hold relevant qualifications. This is an excellent opportunity for someone seeking part-time work in these fi...

I'm looking for a seasoned Android Studio developer, with practical experience in the Kotlin programming language. The successful freelancer will be developing an app from scratch. The detailed requirements are as follows: - Proficiency in both Java and Kotlin. Although the project will primarily be coded in Kotlin, understanding Java will be beneficial. - Proficiency in Android Studio, with an aptitude for developing complex, interactive interfaces. - Prior experience in app development, particularly in social networking or e-commerce apps. - Good understanding of modern app architecture such as MVVM/MVP. Based on the responses given, I am after someone who is creative and can offer suggestions to best meet the project's needs. This project is a...

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I am in need of a skilled HTML coder or WordPress customizer to create a well-functioning form for my website. The main objectives of this form are: - To gather certain user information including their Name, Email, title, organization, a date, and specific data from a two-tier dynamic drop-down menu for 'diocese'. - Another important feature is a Yes/No permission field for users to give consent for their data to be published on a post in real-time. A special emphasis should be on the 'diocese' field which should accommodate a large amount of data and function seamlessly. Ideal freelancer should have proven experience with user data collection applications, HTML / WordPress customiza...

As a seasoned developer, my purpose is to incorporate dynamic data rendering into a pre-existing project. The framework of choice is React JS and the Ant Design (antd) library. Related tasks are: - Implementing dynamic data rendering using React JS and Ant Design (antd) - Handling real-time API data and integrating it into the user interface The relevant skills this role demands are: - Proficient understanding and hands-on experience with React JS and Ant Design (antd) - Experience with real-time API data integration - A knack for creating seamless, responsive layouts Please note I will provide the required APIs; therefore, creating new APIs is not part of this project. Your role will be specifically focused on rendering real-time data e...

We are Patricia Boutique, a small-batch artisanal candle company based in Georgetown, Kentucky. We seek a talented and experienced branding and design professional to help us elevate our brand identity and create a cohesive, professional look across all our marketing materials. Scope of Work: Review our existing logo and provide recommendations for improvement or redesign to better align with our brand values and target audience Develop a comprehensive brand style guide, including color palette, typography, imagery, and design elements Design packaging labels for our candle products Create templates for marketing materials, including brochures, flyers, and social media graphics Guide website design and layout to ensure consistency with our new brand identity R...

looking expert in java / java script n c++ developer for my project we can discuss about the project over the chat

I'm seeking an experienced Android developer to work towards the development and bug fixing of a new location-based real-time application. Key tasks include: 1. Application Development: The core task involves developing a well-structured application providing real-time location services. 2. Bug Fixing: Your role will involve identifying potential bugs and fixing them, ensuring efficient performance of the application. An ideal freelancer will hold extensive experience in Android application development and debugging. You should be well-versed with creating dynamic apps with real-time location functionalities. Familiarity with location tracking and map APIs is a plus. I'm looking for someone who can deliver high-quality, user-friendly a...

I am in urgent need of a seasoned senior DBA who is well-versed in Oracle and SQL Server. This role is full-time, and the chosen freelancer should be prepared to start work immediately. Responsibilities: - Maintaining databases - Optimizing databases - Designing databases Ideally, the successful candidate should have considerable experience in both Oracle and SQL Server, as well as maintaining, optimizing, and designing databases. In your application, please highlight: - Your experience as a DBA, specifically your familiarity with Oracle and SQL Server. - Any proven past projects in maintaining, optimizing, and designing databases. Upto $3K per month for 160 hours of work. But need to be available full time and be ready to...

...latest version, lite speed cache, Php8.1 into a Vps system, Dns via Cloudflare. Homepage and some others are build with visual builder Goals: 1-identification (debug) and removal/fix of all code errors found in the Google console (Screenshot) 2-check/debug/fix/optimize all running Plugins 3-optimize the current code and cash systems to obtain the best performance both on the Wordpress and e-commerce side (woocommerce) 4-provide a detailed report of the operations performed comma of the problems encountered and the related solutions apply You should be proficient in WordPress Core fixing and have experience in: - Debugging and resolving website errors - Optimizing website speed - Understanding the best practices for achieving a smooth, fast-loading WordPress...

I am seeking an experienced HTML coder with an eye for aesthetics and attention to detail who can swiftly handle modifications to my website. The project needs to completed in the next 3 to 4 hours. The successful freelancer will be responsible for two key tasks: 1. Changing the layout: - Elements on the page need rearranging. - Content is appearing overly stretched and needs to be resized to present more appropriately. This refers to both text and images on the site. 2. Debugging: - There are several bugs on the site that need attention as part of this update. The successful applicant should be proficient in HTML, CSS, JavaScript, and have a good understanding of web aesthetics and layout design. You should also have a strong track re...

I need a skilled backend developer to work on my site. The selected individual will be expected to use their skills and experience to contribute to the overall functionality and efficiency of the site. - Required Skills: Php, HTML, CSS, Java Script, Bootstrap etc. Actually half panel of my website is made. But due to some problem with my developer it can't work right now. I want to make web stories backend panel and website content part dynamic on the website. There is not much work. If anyone can complete this work. So please place the same bid.

I'm experiencing syntax errors in the business logic part of my application in Java 11. I urgently need a skillful programmer with significant experience in handling Java 11 to diagnose these errors and fix them promptly. The scope of work includes - Analyzing the current source code for syntax errors in the business logic - Debugging the errors as and when identified - Implementing the fixes - Ensuring the implemented logic operates appropriately post-fix An ideal candidate should have: - Expertise in Java 11 - Strong debugging and problem-solving skills - Experience working on business logic in complex applications Your knowledge and experience in this area will be a deciding factor for the successful completion of this task.

We are in the process of migrating our Java Applications from a Hostinger VPS solution to AWS EC2 and have come across a few roadblocks. We are having troubles particularly with the setup configurations causing the applications not to appear on browser as desired. We have narrowed down the problem to be with AWS and not the applications themselves. We are currently seeking an experienced professional for the following tasks: - Investigate the issue to fully discover its nature. - Make necessary adjustments to the setup configurations on AWS EC2. - Ensure smooth and seamless launching of our Java Applications on browsers. Ideal Skills: - Prior experience in working with Java Applications, particularly on Tomcat servers. - Comprehensive understanding o...

I'm seeking an experienced Pinescript coder to develop an indicator for me. This project involves creating a particular set of price-based lines and comparing their values according to Price Units and Time Units. Below is a breakdown of the key requirements for this project: 1. Indicator Type: - The indicator should generate 3 lines that track and represent the movement of price data. 2. Line Comparison Method: - These lines should be compared based on "How much Price Units and Time Units there in that lines". For Example... Line 1= 598 PUs and 1 TU, Line 2 = 108 PUs and 1 TU, Line 3 = 709 PUs and 4 TUs Price Comparison : Line 3 > Line 1> Line 2 Time Comparison : Line 3 > Line 1 = Line 2 This Record should be s...

Only apply if you are Genuine!!. Freelancer you are making it very easy and fruitful for scammers..... I require a skilled coder to design a robust program that can accurately track and record the speed of race-horses at specific intervals while streaming a race online via my computer. The key responsibilities include: - Developing a program that can analyze video content - Ensure accurate speed tracking at specific intervals - Generating a table in Excel to display captured speeds Ideal candidates should have a solid background in programming and experience with speed detection technology. Previous work with video content analysis is highly desirable. The candidate should also be familiar with creating and handling Excel spreadshe...

I need a skilled developer to create a web application with a core focus on user registration and login functionalities. Here's what the project demands: - Expertise in creating web applications that are secure, scalable, and efficient. - Strong experience in implementing user registration and login features. - The application needs to provide a seamless user experience for registration and login. - Please also ensure that the code is clean and well-documented, so it could be reused or adjusted in the future if needed. Important skills for the job: - Proficiency in backend languages, especially in Python, Node.js, Java, or .NET. - Strong knowledge of database management. - Hands-on experience in implementing user authentication and a...