Web developer payment gateway apis jobs

I'm in need of skilled app developers who can create a robust E-commerce application for both iOS and Android platforms. Key Requirements: - E-commerce Focus: Please inbox ? me for more details. - Payment Gateway Integration: MOMO MTN. The application should be integrated with MoMo MtN payment gateways to ensure smooth transactions for users. Skills and Experience: - Proficiency in app development for both iOS and Android. - Prior experience in creating E-commerce applications, with a focus on usability and user experience. - Expertise in integrating payment gateways in mobile applications. - Strong understanding of security measures for E-commerce platforms. I'm open to your suggestions and expertise to enhance the functionality and usability of...

I am in the process of setting up a LoRaWAN-based network with a gateway and sensors. I need a comprehensive platform to manage this network and provide my clients with an intuitive dashboard to monitor the transmitted data. Key Features: - Management of LoRaWAN Gateway and Sensors: The system should allow me to connect and monitor the status of the LoRaWAN gateway and the sensors attached to it. This will include ensuring data transmission is functioning correctly and managing any updates or changes to the hardware. - Client Dashboard: I require a user-friendly dashboard for my clients. The dashboard should display the data transmitted by the sensors in a clear and understandable way. The data to be displayed includes: - Temperature and humidity - Air quali...

I'm seeking a developer to design and build a photo gallery and camera app, compatible with both Android and iOS platforms. Key Features Required: - Image Editing Tools: Tools such as filters, cropping, and more. - AI Enhancement is must - Social Media Sharing: Easily share photos across various social platforms. - Cloud Storage Integration: Photos should be easily saved and accessed in the cloud. Design Aesthetics: - A modern user interface is desired for this application. Ideal candidates will have experience in app development for both Android and iOS, and an understanding of modern UI design principles. Experience with integrating image editing tools, social platform APIs, and cloud storage is essential.

i have an issue in my website and looking for a dev to fix asap '

...need of an adept web developer who can bring my vision for an all-inclusive tutoring service to life. The website should embody a professional and sophisticated approach. Features: - A range of subjects I offer includes Math, English and Science. Therefore, the website needs to cater to all academic requirements. - An online booking system to schedule appointments, an integrated payment gateway for seamless transactions and an elaborate tutor profiles section are requisite functionalities. - Additional components would be a Home Screen, 'My Account' page, and 'Contact Us' page for easy navigation and user interaction. Ideal Skills: - Proven experience in designing and building professional-looking websites. - Familiarity with integratin...

I am seeking a Unity game developer particularly skilled in multiplayer development for a player versus player (PvP) real-time web session game in the Runner genre. Your tasks would include: - Create full game from the beggining. The perfect freelancer for this project should have: - Advanced Unity game development skills (5+ years). - Proven experience specifically in real-time multiplayer game creation (2+ successfull projects). - Session games (execute server per each session [1vs1]) Good reference on what we will build -

I'm seeking a skilled developer to create a bot that leverages the Solana Scan Pro API for identifying and capitalizing on price differences between tokens across both decentralized and centralized exchanges. Key Features: - Arbitrage Opportunities: The bot should be specifically designed to scan and identify price differences between specified base and trade mints. - Cross-exchange Monitoring: It should be able to monitor both decentralized exchanges (DEXs) and centralized exchanges (CEXs) to maximize the range of opportunities it can identify. - Automated Trading: Once an arbitrage opportunity is detected, the bot should automatically execute trades without the need for manual confirmation. Ideal Skills and Experience: - Proficient in Solana: As the bot will be using the S...

I'm in need of a skilled developer with a strong background in PHP, particularly in backend development. The project involves creating a simple e-commerce website with less than 5 pages. This site will function as an online store, primarily focused on selling products or services. Ideal skills and experience: - Proficiency in PHP - Experience in backend development - Previous work in e-commerce websites - Understanding of user registration and login systems - Knowledge of database integration

I'm seeking a web developer to create a fully functional e-commerce platform for my jewellery brand. My main focus is on having a website that can handle online transactions seamlessly. Key Responsibilities: - Develop an e-commerce website that is visually appealing and user-friendly, with a focus on mobile responsiveness. - Integrate Credit card and Bank transfer as the primary payment methods. - Ensure the website is secure and has SSL certification. - Implement a smooth checkout process for customers. The ideal candidate should have: - Extensive experience in developing e-commerce sites, preferably with jewellery or luxury brands. - Proficiency in payment gateway integration, particularly Credit card and Bank transfer. - A solid understanding of...

I'm seeking an experienced C# developer to port a python webapp app to a C# web app (most likely ASP .NET with RazorPages). There is no database, all the data comes from an existing API. Key Skills & Experience Required: - understanding the fastapi + jinja templates (python based) - Hands-on experience in developing RESTful APIs using C# - simple and clean code - data serialisation The entire app has 100 lines of code + ca 100 lines of HTML template There are 3 buttons and about 6 endpoints Task: GIVEN: A simple webapp in python (fastapi + jinja) RESULT: - A webapp with the same functionality based on C# - it should be easy to understand / clean code - data serialisation as in the python app / template - short documentation (dependencies/install/depl...

Seeking an experienced Flutter Developer to work on the setup and build Application I purchased from Codeconyan, Once built, you will be responsible for submitting these apps to both Apple and Play Store. Your responsibilities will include with Setting up and configuring the apps Ideal candidates should have plenty of experience with Flutter Development, as well as a portfolio of past work to demonstrate their expertise. - Proficiency in Flutter development - Experience in developing for both iOS and Android platforms - Ability to work independently with minimal guidance As the client, I did not specify the key features to be prioritized, giving you the flexibility to design the app in a way you find most effective. Similarly, there is no predesignated design requirement for t...

Description : We are seeking an experienced Flutter developer to make modifications to our existing mobile application. The ideal candidate should have a strong background in Flutter development, with proven experience in building and modifying cross-platform mobile applications. Responsibilities: Make modifications to the existing Flutter app according to provided specifications and requirements. Implement new features and functionalities as needed. Ensure the app maintains high performance, stability, and responsiveness. Collaborate with our team to troubleshoot and resolve any issues that arise during development. Participate in code reviews to ensure best practices are followed. Requirements: Proficiency in Flutter development, with at least 5 of experience working with the ...

As the owner of an existing app with a website that needs fine-tuning, I am in dire need of a developer with top-tier skills in Reactjs and MUI to rectify several issues and implement updates across the site. Key elements of the project include: - Fixing inconsistent layout and spacing issues present throughout the entire website. - Enhancing the design by making more consistent use of grids for content arrangement. - Improve tables. - Improve form controls. The ideal candidate has significant experience in working with layout designs, from analyzing potential issues to implementing solutions that have a noticeable impact. Your ability to improve usability and, thus, user experience, is essential. This project may require detailed reviews of website features, so a keen...

As a co-founder of a burgeoning tech startup, I am on the lookout for a skilled software developer to join our team. At this time, I'm unable to share specifics about the software's main purpose, but I am eager to find a collaborator—someone who isn't just proficient in coding but who will also mesh well with our team culture. While we may not be able to offer top-tier salaries at the moment, stock options are on the table, underscoring our commitment to treating you not just as a contractor but as an integral part of our team. Key requirements: - Proficiency in Python and JavaScript. - A quick learner who adapts easily to new challenges. - Strong problem-solving abilities. - Interested in a long-term collaboration with our team or to become a part of it.

I urgently need a Laravel developer who can help upgrade Laravel in my existing project. Speed is of the essence in this project, as I need it completed as soon as possible. Skills and Experience: - Expertise in Laravel development - Experience in API integration - Prior experience in upgrading Laravel versions - Ability to deliver quality work under tight deadlines Please, only serious and committed Laravel developers should apply. I look forward to your prompt responses. Thank you.

I'm in need of a Django Developer with React experience to work on projects for one of my client. Requirements and Responsibilities: - You should be comfortable working with Django, a high-level Python web framework, and have experience in building web applications with React. - The projects will include features like user authentication and registration, real-time notifications, and integration with third-party APIs. - You should be available to work on multiple projects at once, ensuring timely and quality deliveries. - The ability to communicate effectively and understand the diverse requirements of different projects is essential. - Experience with multiple projects and a strong understanding of best practices in Django and React are highly preferred...

I need an experienced engineer in Jasmin SMS gateway. We have Jasmin ready on our server, we need to handle all MT/MO messages in our endpoint/database, we already handle all MT messages via our interceptor script. Problem: we need to handle message statuses too Task: Provide a Python script to handle message statuses, and demonstrate that it works! Important! We know that is it possible to get DLR via http API, our users use smpp only for now, we need to handle messages from both http/smpp

I need an experienced engineer in Jasmin SMS gateway. We have Jasmin ready on our server, we need to handle all MT/MO messages in our endpoint/database, we already handle all MT messages via our interceptor script. Problem: we need to handle message statuses too Task: Provide a Python script to handle message statuses, and demonstrate that it works! Important! We know that is it possible to get DLR via http API, our users use smpp only for now, we need to handle messages from both http/smpp. helpful links:

I am looking to build a small web app, looking for professional android developer.

I am looking for an Individual wordpress developer to build a website for my disposable product business

I’m in need of a skilled React developer, or a Full Stack developer proficient in React JS and Java/Spring. The goal is to create a personal food ordering app, which would facilitate online ordering of food. Key Features: - User Registration and Login: The app should allow users to sign up, log in, and manage their account. - Browsing and Ordering: Users should be able to view a menu, search for items and place orders. - Cart and Checkout: The app will need to have a cart feature and a seamless checkout process. - Order Notification: The app should send orders to the restaurant and have the functionality for the restaurant to either accept or reject the order. The successful freelancer for this project should have a strong proficiency in React JS, Java/Spring, and exp...

Source code: Compile it and run all the apis on your machine , if there is any api issue , give me estimate time and budget to fix it. More details: What specific tasks do you need the Node developer to perform? Backend development Which backend frameworks are required for this project? Node Are there any specific features or functionalities that you would like the backend to have? I will mention

...a professional Android app developer to create a web application for me. Below are the specific features I want to include in the app: A. App Logo: I have the logo ready; you only need to integrate it into the app. B. Splash Screen Video: I possess the video for the splash screen; your task will be to incorporate it into the app. Screen: I already have a design for the homepage; I will provide you with further details via chat. D. Bottom Menu Navigation: Implement bottom menu navigation for easy access to different panels. Notes for the Developer: 1. App Compliance: Since I intend to publish this app on Google Play Store, it is crucial that the web app is developed in compliance with Google's standards. Additionally, please advise if integrating the ...

I'm looking for an experienced WordPress developer to assist with a variety of tasks. The key responsibilities of this role include: - Theme Customization: You should be able to modify and tailor WordPress themes to suit my Portfolio and Business Website requirements. - Plugin Development: I need custom plugins created to enhance the functionality of the site. - Website Migration: You will be responsible for ensuring a smooth transition from the old site to the new one. - Website Development: You'll also be involved in the general development of the website to make sure it not only looks good but works smoothly. The primary goal of my WordPress website is to serve as both a Portfolio and Business website. I want to showcase my work in an appealing manner while also prov...

I'm looking for a CorePHP developer to work on my project. He should be ChatGPT proficient to generate faster code. Site Complexity - Easy Long Term Project 3 hrs per day or Weekly 15 hours. Max 50 hrs per month required. ***INDIVIDUAL INDIAN DIRECT FREELANCERS ONLY.*** COMPANIES or THIRD PARTY BIDDING FOR THIS PROJECT WILL BE NEGATIVELY REPORTED. I WILL DIRECTLY DEAL WITH THE DEVELOPER.

I'm in need of a skilled web developer to create an e-commerce website that will be a one-stop-shop for all types of fitness equipment. Key Features: - Full E-Commerce: The website must have a comprehensive e-commerce functionality, allowing customers to browse, select, and pay for products online. - Payment Gateway: The site should be integrated with a secure and reliable online payment system, ensuring that customers can pay for their purchases smoothly. - UX/UI Design: A user-friendly design that prioritizes ease of browsing and checkout is essential. - Responsive Design: The website must be optimized for seamless use across desktop, tablets, and mobile devices. Ideal Skills and Experience: - Proficiency in e-commerce website development, wi...

I'm seeking a skilled Mendix developer to build the frontend of a website. Key Requirements: - Frontend Development: The main goal of this project is to have a website's frontend developed using Mendix. - Web Pages: There will be approximately 6-8 web pages in total, and I will provide the design for implementation. - Functionality: The website should have a contact form, allowing users to get in touch with us. Ideal Skills and Experience: - Proficiency in Mendix: Essential to have prior experience and expertise in developing frontend using Mendix. - Web Development: Strong understanding of web development principles and practices. - User Interface (UI): Aesthetic sense and the ability to translate design into a visually appealing and functio...

I'm in need of an e-commerce website developer, the website is meant to support a product catalog and facilitate online sales transactions. Key Project Requirements: - The e-commerce website will host a product catalog - Users should be able to add products to a shopping cart - The website needs to support a secure payment gateway for online transactions Key Details: - The website will be selling a limited number of products, specifically less than 50 - A user-friendly design and layout is crucial for this project Ideal Freelancer: - Proficient in e-commerce website development - Experience with product catalog implementation - Capable of integrating secure payment gateways - Skilled in creating intuitive shopping cart functionality - Strong in UI/UX des...

...Goal: Conduct a comprehensive SEO analysis of leading payment provider comparison websites in Europe, with a specific focus on POS terminals and Payment Gateways, and recommendation whether and how to enter this market with a new website. Target Markets: Gather key data for UK, Germany, France, Spain, Italy, Netherlands and Denmark. The key requirements for this project are: - SEO Analysis: I'm looking for a professional who can conduct a thorough SEO analysis for the European market. This includes researching relevant keywords, analyzing competitors, and recommendations for a successful new website launch in this market niche - Content Review: Your role would also involve reviewing and suggesting improvements to the content regarding the payment providers...

I'm urgently needing a Shopify developer who's skilled in an array of tasks. You'll be working on various aspects that are yet to be defined which mandates flexibility. Since I'm skipping the specifics, the ideal candidate should be a jack of all trades, particularly with skills like: - Theme customization - Plugin integration - Store setup Knowledge of various Shopify themes is a must. You must be capable of working with Debut, Brooklyn, Minimal themes among others. Your main task will be to assist in making my Shopify store fully functional irrespective of what it's being used for which may vary from selling physical or digital products, to showcasing services. If you can adapt rapidly to changing requirements and deliver excellently, then this job is ...

I am seeking a knowledgeable freelancer who can install and...install and customize Trafft scheduling software on my website. Specifically, your tasks will include: - Customizing booking form design - Configuring time slot settings - Setting up email notifications -Setting up sms notifications Most importantly, I'll need you to integrate this software with some of the tools I regularly use. These tools include Zapier, Google Calendar, and Stripe Payment Gateway. The successful candidate should have experience with these programs, as well as expertise in scheduling software customization. Familiarity with Zoom is also an advantage, as I might need this platform integrated in the future. Remember, this project goes beyond installation—it calls for customization ...

I'm looking for an experienced content writer who...engaging, informative content specifically around the topic of fintech API, Payment processing, and software development. - API Development: The ideal candidate would be a skilled developer with experience in fintech API. Key features would include real-time data integration, payment processing, and user authentication. Payment Processing System Requirements: - Ability to accept multiple payment methods - Secure encryption for sensitive data - Integration with popular payment gateways Ideal Skills and Experience: - Proven experience in content writing on fintech topics. - Proficiency in fintech API development. - Strong understanding of payment processing systems. - Experience in en...

I'm in need of an experienced React Developer to develop a webapp for my project. Should be able to implement user authentication, responsive design, and integration with third-party APIs into my project. A key authentication functionality is Whatsapp OTP based login. Ideally, you're versed in creating a bold and colorful layout that pops. I value clean code and innovative solutions. Strong knowledge of React and previous experience with Whatsapp API are essential. Look forward to your bids.

I need a skilled PHP developer to write a script that will interact with an API and retrieve User Information and Product Details. The fetched data should then be displayed in HTML format, enabling users to search through it. Key Requirements: - Fetch User Information and Product Details from an API - Print the fetched details in HTML format - Implement a search function to enable user interaction Ideal Skillset: - Proficiency in PHP - Experience with fetching and handling data from APIs - Strong understanding of HTML and web interface design - Prior experience implementing search functions in web applications Please provide examples of your previous work with APIs and user search functions.

I'm seeking a knowledgeable freelancer to set up a Facebook webhook, tracking and validating resharing activities of users. Key Features: - This configured webhook s...specifically to post resharing. The action triggering this webhook should be a 'Share'. - The content that should be monitored upon sharing by the user encompasses Images, Text Posts, Videos, Web, and other media forms. Key Skills and Experience: - Proficient in web development, specifically in managing and implementing webhooks - In-depth understanding of Facebook APIs - Proven experience in similar projects will be advantageous. Your proposal should detail your experience in setting up Facebook webhooks, and how you plan to tackle this task. A solid understanding and ability t...

I am seeking an experienced Laravel developer to perform various back-end functionality customizations for my projects, with a focus on payment processing. Key Responsibilities: - Customizing the back-end functionality of my Laravel project. - Integrating Payment Processing system. Skills and Experience: - Proven experience with Laravel - Extensive understanding of back-end development - Expertise in payment processing systems - Familiarity with API integration and database management. The ideal candidate should have a deep understanding of Laravel and be comfortable with all aspects of back-end functionality. I'm looking forward to seeing how you can help tailor my project's capabilities to our needs, particularly in regards to payment pr...

I am searching for a freelance Google GPS navigation developer to customize the UI, integrate additional features, and rebrand it under our rideshare company, Turvy. Here's a comprehensive guide that outlines the necessary steps to accomplish this customization: [Link to Google Maps Navigation SDK documentation](). The primary requirement for this customization is to adjust the UI colour to match our brand identity. The specific colour code we need to incorporate is #090949. Please take note of the following important points before proceeding: 1. **Experience Requirement:** Only developers with prior experience need to apply for this project. We expect candidates to provide samples of their previous work for

I am seeking an experienced WordPress developer to help finalize the setup of my travel agency website. I have purchased the Travolo theme and need assistance with installation, configuration, and customization to ensure the site is travel-agent friendly. Key tasks include theme installation, importing demo content, setting up essential plugins (like booking systems), and customizing the site to match my brand's aesthetics. Additionally, I need to integrate functionality that supports booking, customer management, and inquiry forms.

I'm seeking an experienced Oracle Apex developer to build a process automation application primarily for my internal team. Key Features: - User authentication to verify and secure user access. - Data input forms to streamline data collection and ensure consistent data entry. - Reporting and analytics functionality for in-depth process analysis and decision-making support. Ideal Skills: - Proficiency in Oracle Apex. - Experience in creating user-focused data input forms. - Capability to develop secure user authentication systems. - Expertise in building reporting and analytics tools. Your mission is to create an Apex application that simplifies our processes, ensuring efficiency and accuracy by easing data management tasks. Your work will directly benefit our internal employ...

...talented web developer with a passion for fitness to help build an e-commerce website for my gym clothing brand. Key Features Needed: - Product Catalog: The website should allow users to browse and search through our range of gym clothing items. - Shopping Cart and Checkout: It's important that the site includes an easy-to-use shopping cart and secure checkout process. - Customer Reviews: I'd like to enable customers to leave reviews on the products they've purchased, as this can greatly enhance the credibility of our brand. Payment Methods: - PayPal: Integration with PayPal is essential for providing a secure and widely used payment gateway. - Cash on Delivery: The option to pay for orders on delivery is a must, to cater to a variety ...

I'm looking for a skilled developer with experience in food delivery apps to help me set up a comprehensive solution for my business. - **Features**: I need to integrate several key features including user registration and login, order tracking, payment gateway, inventory management, a seller app, a delivery agent app, an iOS app, an Android app, and a web app. The solution must provide a smooth and seamless experience for both customers and my team. - **Platform/Framework**: While I'm open to suggestions, I'm considering using scripts from Envato or Code Canyon as a base for this project. Any framework compatible with these scripts would be acceptable. - **Timeline**: I don't have a strict deadline for this project, but I'd appreciat...

I'm seeking a qualified app developer, with expertise in WooCommerce, to create an app for my website. I need the app to function seamlessly on both iOS and Android platforms. Key features that I wish to incorporate include: - Customer Reviews: The ability for customers to leave feedback will provide invaluable insight and drive improvement. - Live Chat Support: This must be incorporated to enhance customer service and facilitate real-time assistance. Additionally, I need the app to integrate with third-party services such as: - Payment Gateway: To ensure secure and convenient transactions. - Shipping Service: For streamlined delivery processes. Ideal skills and experience include previous work with WooCommerce, proficiency in iOS and Android app development, ...

I need a backend developer to complete my marketplace website. The HTML and CSS are ready, and now I require the backend coding to be developed with respective API integrations. Key Functionalities: - User Authentication and Registration: Users should be able to securely sign up and log in to the website. - Product Listing and Search: A seamless system for users to add, search and interact with products. - Payment Processing: Smooth integration of payment gateways to ensure secure transactions. Key Requirements: - Backend Coding: Looking for a professional who can develop the entire backend system from scratch. - Python Proficiency: The backend should be built in Python. - API Integration: In addition to payment gateways, I also require the integration of soc...

I need an experienced PHP developer, particularly with Laravel and Symfony expertise. The main task for this project is to fix an issue with mpdf, which is currently generating incorrect PDF output. Key responsibilities: - Identify the root cause of the incorrect PDF output - Implement the necessary fixes to resolve the issue Ideal skills and experience: - Proficient in PHP with specific experience in Laravel and Symfony - Prior experience with mpdf is highly desirable - Ability to troubleshoot and debug efficiently - Strong problem-solving skills - Attention to detail and commitment to producing high-quality work This is a relatively straightforward issue, but I am looking for a developer who can address it promptly and effectively. Please provide examples of similar proj...

As a small business owner, I am seeking a design-savvy freelancer to develop an engaging ecommerce website for my store, wh...store, which sells undisclosed products. The project encompasses: a) Website Design: - A functional and user-friendly interface that suits my brand and attracts customers. I need advice on making the most effective color choices to enhance the user experience. b) Payment Integration: - The comfort and convenience of my customers is a top priority, so the integration of multiple payment methods, namely Credit/Debit Cards and PayPal is non-negotiable. Desired Freelancer Skills/Experience: - Web development - Payment gateway integration - Solid understanding of color psychology and its role in UX design - Prior experience in e...

hi . I am looking for a special and creative person to build a simple website interface that deals with the API of a website I have a subscription and membership to The sit...it This is to import my templates and tools into and display them on my site Anyone submitting an offer is requested to review the website and information to learn how to deal with the API The application interface is required to display and call up forms to display through my site in a private chat window from here can read about Api Note: I have some websites and application html templates that the programmer can use as a ready-made template. Just programming and api integration with these templates

I'm looking for a proficient web developer to create a vibrant and interactive website for my travel concierge business. The website will primarily cater to individual and group travelers and aim to provide comprehensive travel concierge services. Key services offered: - Flight, hotel and cruise bookings - Local immersive experiences - Customized travel itineraries The ideal freelancer for the job should have: - Proficiency in building dynamic websites with engaging UI/UX design - Experience in integrating travel APIs for flight, hotel, cruise and local transportation bookings - An understanding of the travel industry and knowledge in promoting travel-related products and services effectively on the website. - Intergrated products and blog with affiliate lin...

...seeking an expert to boost the loading speed on the homepage of my Shopify store. Key responsibilities: - Commence with an thorough review of my Shopify site to identify the elements that are causing slow loading times. I am uncertain about what these might be and would appreciate your expertise on this matter. - Focus your speed improvement strategies on the homepage primarily. This is a crucial gateway for my customers and optimizing its loading speed is significant to reduce the bounce rate. Skills and Experience: - Prior experience with Shopify platform. - Proven record of successful site speed optimization projects. - Proficiency in diagnosing and rectifying site issues that cause slow speeds. - Excellent understanding of handling high resolution images, numerous vid...

I'm in need of a skilled Web3 developer to assist with a range of tasks. Your main responsibilities will include: - Developing smart contracts - Building decentralized applications - Integrating blockchain technology You should be proficient in the following programming languages: - Solidity - JavaScript - Python Your experience with blockchain platforms such as Ethereum and Polkadot is essential. Specific experience with Binance Smart Chain is a bonus. You must also have familiarity with additional languages such as Go, Rust, Java, and Node.js. The ideal candidate should have a deep understanding of the Web3 ecosystem and be able to contribute to a variety of projects. Experience in full stack development and an understanding of blockchain security would be highly benefici...

Unicenta POS - Payment Module Integration with Tyro card payment. Access to Tyro and Custom Unicenta POS source code will be provided. Tyro - Integration Features - Integrated Purchases - Integrated Receipts - Integrated Refunds - Integrated Split Payments - Integrated Surcharging Disable Sales Screen - buttons Cash, Debt, Card, Refund Add - Counter (field) in Configuration - General Testing, Debugging, Fix Issue and Deliver the Project in Working Condition.