Junit stub backendcông việc

Hola, estoy busacando un desarrollador backend para integración de woocommerce con mercado pago.

I am in search of an enthusiastic web developer. You'll need: - To be a native English speaker (green card holders, visa holders are welcome), there will be video interview to check your verbal English skills and coding skills - Junior to mid-level experience - Proficiency in multiple programming languages: HTML/CSS, JavaScript, Python, Java, .NET, React - Familiarity with backend and database structure - Knowledge of cloud infrastructure Your principal task will be to provide technical support in interviews. I am offering competitive payment of $5k USD+ per month, with scope for increase as my business evolves. Please note that this role requires knowledge of the following technology stack: HTML/CSS, JavaScript. Your keenness to learn, problem-solving talent, and ability ...

...móvil funcional en la plataforma Android. Es imprescindible que cuentes con habilidades excepcionales tanto en el frontend como en el backend. Las tareas específicas a realizar incluyen: - Diseño y desarrollo de la interfaz de usuario. - Detectar y corregir porque no llega una nueva solicitud de alerta de viaje. - no reconoce los metodos de pago(mercado pago, stripe, etc). - corregir los nombres definidos en todo el aplicativo El candidato ideal para este proyecto deberá tener las siguientes habilidades y experiencia: - Experiencia demostrable en el desarrollo de aplicaciones móviles utilizando Flutter. - Competencia en la codificación tanto frontend como backend. - Comprender los principios de diseño de aplicaciones m&oa...

I need someone to build a contact form with backend like this one: It has to follow a special css structure (I will send css). I will send you HTML file, all you need to do is to put all labels and text boxes found in this page () and built js back-end contact form that send all details filled out by customer to specific email address I will provide. Please ask questions before accepting to start working.

I'm looking for an expert in web development who will create a platform in which users can enter their email and create a password for the purpose of account verification. This information wil...include: - Creating a user-friendly interface for data input - Ensuring robust security measures are in place to protect these data In instances where a user forgets their password, the system you create should be able to generate a reset link and send it to the user's registered email. This requires expertise in both frontend and backend development, with a focus on cybersecurity. Familiarity with handling sensitive data is a must. Ideal skills: •Frontend and backend development •Cybersecurity •Experience in creating data collection interfaces •Knowle...

I am seeking a versatile Full-Stack developer to assist in clearing my doubts. Your task will be to clarify various coding concepts and problems I encounter. Key Requirements: -...difficulties. Your teaching and communication skills are as crucial in this project as your coding skills. I appreciate your interest and look forward to working with you. To do. "I possess a foundational understanding of concepts and aim to develop a form that transmits data to a backend via an API. The collected data will then be stored in a MongoDB database. Subsequently, I plan to retrieve this data through a separate API and present it in a table on the frontend. I seek guidance on integrating the frontend and backend components seamlessly and addressing any uncertainties that may aris...

I am seeking an experienced individual developer (Not a company or team of developers) to join our team working on a real-time gambling game. The ideal candidate will have expertise in managing MongoDB databases, programming in TypeScript for backend development, and working with AWS services. You will collaborate closely with our team of Unity programmers to deliver a high-quality gaming experience. Responsibilities: - Manage MongoDB databases for the game. - Program in TypeScript for backend development. - Work with AWS services for deployment and maintenance. Requirements: - Proven experience with MongoDB, TypeScript, and AWS. - Strong skills in WebSocket and API development. - Ability to work independently and collaboratively with a team of Unity programmers. - Excellen...

...version of the SEO platform in a production environment and monitor its performance, stability, and security. -Document the design, development, and implementation process of the SEO platform and share findings, insights, and experiences with the broader community. Ideal Skills: - Strong understanding of SEO platforms. - Experience with user-based permissions systems. - Familiarity with both backend and frontend development. -Strong proficiency in blockchain development tools and frameworks, such as Ethereum, Hyperledger, or Quorum. -Experience in implementing machine learning algorithms and techniques, especially in the context of natural language processing (NLP), deep learning, and recommender systems The goal is to create a platform that aids in SEO efforts with the abi...

I’m on the hunt for an experienced PHP programmer who is well-versed in MySQL. The job's focal point is backend development encompassing user authentication, data management, and API integrations. I have an existing website which needs few issues to be resolved and then take care of future development. Here’s a bit more description on the skills and experience I'm after: - Deep knowledge in PHP and MySQL - Proficiency in backend development - Proven experience in managing user authentication and concurrent data - Skills in API integration I am looking for a person who is trustworthy, honest and can be point of contact for future needs.

Hi, Want to build an animated website like boredapeyachtclub () Everything is ready from the backend. Please attach just your work with an animated website (Gsap js, three js, phaser js)

...the landing page, on which the registration data is requested, then a check of the email address and an automatic release of the password (or the website) with emails to the interested party and the site operator should take place. The page needs a landing page, an imprint, a Google map excerpt of the place, and a PDF flipbook or similar a Grid for Detailing. The simplest possible frontend and backend management as an extension for later adaptation are to be included. What is desired is an SEO and responsive optimized and clearly designed page for conveying information. I will be happy to answer further detailed questions via chat. Please give me an offer for fix price to build the theme by changing the prefecture one. Milestones are the implementation of the basic page on my do...

Seeking a highly competent and reliable developer / agency to take over and enhance our existing project. After 1y of intensive development, we need a team capable of understanding our needs, responding swiftly, and applying necessary modifications with pinpoint accur...smooth and efficient transition from the current agency Respond promptly to modification requests and remarks Provide ongoing development and long-term maintenance Required Skills: Solid experience in native application development, particularly with PHP Laravel, NodeJS, Kotlin, and Swift Proven track record in developing and managing complex projects involving multiple applications and a robust backend Attention to detail and commitment to meeting deadlines Previous experience in the delivery or e-commerce industry...

...and connected with groupchats) You will be in charge for managing and monitoring freelancers solo work (1 on 1 chat with the freelancers) The webapp is already work-in-progress! Freelancers currently working on the project - Graphic Designer (Logo, Illustrations) - UI/UX-Designer - Coder (Backend) - Coder (Frontend) You will manage the following teams: UI-/UX-Designer and Coder (Frontend) UI-/UX-Designer and Graphics Designer UI-/UX-Designer and Graphics Designer Coder (Backend) and Coder (Frontend) Your task is to always update me as the head of the project (daily), filter freelancers requests and request requirements and forward them me or to the freelancers responsible for it and homogenizing the project, report problems and other incidences, co...

...Therefore, the CMS should be adaptable and role-agile to cater to different user types, be it system administrators, content creators or site visitors, successfully. Phase 1 Need features-1. Automatic sitemap generate 2. Seo optimize 3. Fully responsive 4. Bulk import & export option 5. Generate backup from backend 6. create Membership package for all user Login Page:- 1 SUB-ADMIN (create any Distributor/ Franchise or any all task) 2. Staff (Management / backend staff / announcement/ Accountant/ assign Job to provider) 3- Franchiser (Purchase any service for customer) 4- CA/Accountant/ Astrologer/ utility Provider 5- User for b2c purchase any service/ apply job/ 6- Teacher (Publish Course with video/pdf/ word file) 7- Student (purchase course) 8- De...

I'm seeking a skilled and experienced web developer, proficient in both front and backend development. I need a professional yet user-friendly informational and service providing website tailored to engage with the general public. Job Requirements: - Outstanding skills in website design and layout to create an appealing and user-friendly interface. - Excellence in frontend web development. Strong understanding of HTML, CSS, JavaScript, and responsive design is required. - Proficient in backend web development. A strong understanding of server-side languages and database management is critical. - The ability to create seamless user navigation is a must, ensuring a user-centric approach to their work. - Familiarity with creating SEO friendly websites to help increase sit...

I'm in need of a qualified full-stack developer with exceptional skills to help in building a gaming website. I'm open and flexible to frontend frameworks you might prefer. Key Responsibilities: - Creating and managing both frontend and backend development processes. - Implementing and maintaining gaming functionalities. Ideal Candidate: - Excellent in either React, Vue.js, Angular, or any suitable frontend framework you prefer - Experience in Full-Stack Development - Strong knowledge of gaming website setup, functionalities and algorithm creation - Able to work flexibly The timeline for the project delivery is open-ended, I'm primarily interested in hiring a professional who can deliver top-quality work regardless of the time period.

...achievements, rewarding them with ranks such as "Silver, " "Bronze, " and "Gold. " Backend Features: Institution Collaboration: Build a comprehensive dashboard for institutions to collaborate with our platform, offering tailored courses for their employees. Payment Gateway: Enable secure online payments for course enrollment, ensuring a seamless transaction process. Discount Coupons: Implement coupon systems for discounts, promoting accessibility to courses. Notification System: Allow students to follow instructors and receive notifications about new course releases via email or notifications. Authentication: Ensure secure login authentication via email, prioritizing user privacy and security. Reporting Tools: Provide backend reporting functio...

simple API provider that offers no-code solutions for data integration to avoid backend work. These providers offer a user-friendly interface and pre-built connectors for various data sources, including Google Analytics 4, Search Console, and social media platforms. Here are a couple of options: • NoCodeAPI: Offers connectors for Google Sheets, Airtable, Google Analytics, Twitter, and more, allowing you to manage APIs without any backend code • Apipheny: Provides a list of free APIs for testing and an API integrator for Google Sheets, which can be useful for connecting different data sources without the need for backend development These services simplify the process of integrating various data sources into your application, making it

...Upload page – needs to auto save every 1 minute while uploading a car. Need direct link to "Edit/Add Features" and "RE-ORDER the Features" from on the Upload Page. Will need direct links on top of the Details page to Edit/Delete/Archive any Car when logged in. Will need Bulk Actions (Delete/Move/Disable) option for the page that will list all the cars in Stock just like they have in WordPress backend. Some Car Dealership websites for example. VERY IMPORTANT - The site has to be responsive and should appear properly on a Mobile Phone as majority of customers

...for this project, it's essential to maintain a steady pace of development. Key requirements include: - Proficient in the use of NTAG 424 DNA for mutual authentication -' SUN, AES,CMAC, dynamic authentication, mutual authentication' How they work. - Proficient in making native app on NFCs. - Familiar with programming and product authentication methods - Comprehensive knowledge in front-end, backend and database so, in short, i want to make a cross-platform anti-counterfeiting app using NFC (ntag424 dna) . which the user is going to scan the tag with the app it's going to verify it with the database. then show them the UI as per you familiar with these kinds of platforms and the ntag 424 DNA (SUN, AES,CMAC)? i will welcome any suggestion or recommendatio...

I need assistance with my Point of Sale (POS) system that is failing to register payments. POS is part of a larger under development business application. Must have: - In-depth knowledge of POS systems - Must be MERN stack expert - Must be familiar with GraphQL -must be familiar with microservices architecture -mongodb Please place bid only if you are fully qualified to work on this. Lets not waste each others time

Twilio - to send message to the user, no reply needed Paypal checkout & invoice integration In the Backend is firebase, app already working I need this done today, in next couple hours, my budget is 60aud Text me

Hello, I am in search of a proficient full stack developer, ideally well-versed in Laravel. The key responsibilities would include: - Frontend development: Adding modern designs and smooth functionality to uplift our site's interface. - Backend development: Ensuring improved performance speed by refining the existing codebase. - Database design and management: To help classify, store, and retrieve data swiftly and securely. Broadly, I aim to enhance our existing website, polishing every layer from the user interface to security features. I anticipate your work will greatly enrich the user experience, while also fortifying the website's performance and security. Ideal skills and experience required: - Profound understanding of Laravel and familiarity with its coding and...

...keep going otherwise we'll try someone else or take internally. We will finish of the site internally once most of the migration work is done. Key Tasks: - Migrate all pages and textual content from to Webflow platform. - Ensure all formatting, links and site functionality remain fully operational post-migration. - use new template design and adjust images as needed - we have backend dynamic functionality but this will be handled by us, so you only need to copy over the current forms - the site is currently multi-lingual but we will handle the translations after this migration is done so nothing for you to do on that. We just need the English content copied across. we would like most of it done within 7 days This project is mainly going to be a lot of cuttin...

I'm currently facing an intermittent issue in my project developed using React.js and Java Spring Boot. --------------------------------------------------------------------------------------------------------------------------------------------------------- We have an web application, frontend in react.js and backend in java spring boot need to fix below issues. 1. From admin open all pages, after giving the permission to another user the page dosent show. after giving permission by admin, user should show the page with data and should able to work as per permission. Need to work remotely through anydex or team viewer and if server work need to give instruction online. Time 1 day Budget -$10. --------------------------------------------------------------------------------...

I'm in search of a proficient, creative Shopify designer who has the ability to design a visually appealing and functional website for my Fashion and Apparel eCommerce business. Ideally, you should have: - A strong portfolio in Shopify website design, preferably with experience in the fashion sector. - An intuitive understanding of designing for an adult audie...easy-to-navigate layout that promotes products effectively and maximizes conversions. - Willingness to collaborate on design options and translate my brand vision into the website aesthetic. I'm open to ideas, suggestions, and I trust your expertise to design a site that resonates with the target audience and elevates my brand's online presence. Your role will also include theme development, so backend Shop...

...dynamic diet company (Second Bite Nutrition Center) offering two core services: Meal Subscriptions and Dietary Consultations. To streamline our operations and enhance customer experience, we are looking to develop a comprehensive system consisting of a Backend, Website, and Android/iOS Apps. Project Scope: This project entails the development of a web-based system with mobile applications (Android & iOS) to manage our meal subscriptions, dietary consultations, and internal operations. 1) Backend Development: • Kitchen Reports: A robust backend system where our staff can generate detailed kitchen reports, ensuring efficient meal preparation and inventory management. • Menu Management: Capability to input and manage menu details including meal calories...

As a business, we're currently focused o...skilled C++ developer to help us create an e-commerce website. Our ideal candidate is a freelancer with: - Exceptional experience in C++ programming, specifically for website development. - An understanding of how to create a smooth, user-friendly e-commerce interface. - Proven track record of successful website development projects. Tasks involved will include the following: - Work on the backend development of our website using C++. - Assist in creating a secure and effective e-commerce platform. - Optimize the usage of available resources for the website's functionality. Please get in touch if you match these requirements and are intrigued by our project. We're looking forward to creating an exceptional online storef...

I require an accomplished Flutter developer to design an application that runs smoothly on Android, iOS, and web platforms. The primary focus of this application is to provide information. Key features should include easy navigation, user-friendly interface, and quick data load...background in developing informational apps. - Proven track record in producing user-friendly designs. - Excellent understanding of performance optimization techniques. Task: Integrate tom tom map into an existing application. You have to buld navigation (like google has) You have to build an map and display dots ( on dot click go to naviagation mode) You have to send your current location to an backend server using socketIO You have to make a button (on click to go on navigation mode) You have to customiz...

I'm looking for a professional capable of developing an application or system to trace the addresses of mobile numbers domestically, giving a full breakdown, including the exact street name and the ZIP code. Requirements: - Must have experience in data mining and data scrapin...street name and the ZIP code. Requirements: - Must have experience in data mining and data scraping. - Experience with geolocation technology is a strong plus. - Familiarity with privacy laws and data protection is critical. - In-depth understanding of domestic telecom databases is required. The ideal candidate will have experience in working on similar projects and deep understanding of backend technology involved. This information will be used with respect to privacy laws and only for legit...

...analytics, customize loyalty & discount cards, and the ability to push notifications to customers' smartphones. Admin Console (Dashboard) should look like - Be passionate about creating user-friendly interfaces with a focus on minimalist design. - Mobile responsive Technology Stack (open for better options): - Firebase for backend and data storage - ReactJS for frontend - ... The ideal candidate for this position should be experienced in SaaS web application development and mobile wallet integration. Moreover, although the functionality is crucial, the aesthetic cannot be forgotten. The digital loyalty cards need to feature a simple and minimalist design, less is more. Looking forward to entrusting this project to

We need few tasks to be done on our Existing IOS native app . 1. Check Login / Registration process on Both side Customer and User side and fix so anyone can do login and register without any... 3. Currently we are using Twillio for SMS services and need to fix if any issue coming by twilio.. also Update contents text on appstore privacy policy. 4. We are running a simple admin panel where user registered person details are saving like ...Name/ Country and phone numbers only...we need to make it more secure and fix any issue while coming on admin side. My backend developer available for any help regarding backend side if required. Check our app We will provide our source code of app to selected candidate. Budget 30$ Thank you

Looking for a full stack developer who can build a website along with the back-end support. Post development the website need to be deployed and make tha application live.

it is a construction material rental site and the person who places the order is the administrator directly from the backend so you have the opportunity from the order page to take photos of the driver's license of the person renting the product and photos of the rented vehicle

I would need help withe the complete MVP, frontend in React/Angular and backend in Node.js with database setup for this project. Let me know if this is something you will like to work on and we can take it forward. More details: Is this project for business or personal use? Personal What information should successful freelancers include in their application? Detailed project proposals How soon do you need your project completed? ASAP

... We are basically an extension for Voiceflow (paltform for creating and maintaining AI agents) we make Voiceflow much more powerful by enhancing thier components, enabling better UI customisations, provide white-labelled dashboards and much more. We also help with integrating Voiceflow with various platforms like Whatsapp, Discord and for this job we're looking for a fullstack/backend-dev to create the integration for connecting Voiceflow to Google business chat () programatically through Voiceglow (us) Please include the following in your proposal: - Github profile - Any relevant projects/links you've worked on (only links please) - Your CV/portfolio/website Please type "cheese" in the beginning of your proposal or it will be ignored, this

... We are basically an extension for Voiceflow (paltform for creating and maintaining AI agents) we make Voiceflow much more powerful by enhancing thier components, enabling better UI customisations, provide white-labelled dashboards and much more. We also help with integrating Voiceflow with various platforms like Whatsapp, Discord and for this job we're looking for a fullstack/backend-dev to create the integration for connecting Voiceflow to Google business chat () programatically through Voiceglow (us) Please include the following in your proposal: - Github profile - Any relevant projects/links you've worked on (only links please) - Your CV/portfolio/website Please type "cheese" in the beginning of your proposal or it will be ignored, this

...WhatsApp Business Cloud API. Functionality should include sending and receiving messages, managing contacts, and handling media attachments (if applicable). User Interface and User Experience: Design a user-friendly and intuitive interface for efficient management of WhatsApp Business conversations. Ensure the interface is responsive and optimized for various screen sizes. Technical Specifications: Backend Development: Django (Python web framework) API Integration: Meta WhatsApp Business Cloud API Additional Considerations: Security: Implement security best practices to protect user data and communication. Scalability: Design the application with scalability in mind to accommodate future growth and user base expansion. Error Handling: Implement robust error handling mechanisms t...

I need an expert for integrating Salesforce and Mulesoft, to achieve both data synchronization and process automation specifically for our sales process. Key tasks to automate will include using Integration Rest API for: - use of APIs through APIkit - connectivity to backend systems - connectivity to SaaS applications Ideal candidate should be: - Experienced in automating sales processes - Proficient in Salesforce and Mulesoft integration - Knowledgeable in Integration Rest API - Able to deliver precise solutions promptly. Please provide a brief of your experience and approach to this project when bidding.

I'm in need of expert freelance developers with strong skills in frontend - Vue JS and backend development(Laravel) , database management, and Google Cloud Platform (GCP) to build a real estate platform utilizing Laravel as the primary technology stack. Position: Freelance Developer (Vue.js, PHP Laravel, Flutter) Location: Remote Engagement Type: Contractual/Freelancer Project Duration: 2-3 year with a possibility of extension Commitment: 2-3 hours daily Compensation: 20000 - 50000 per month, negotiable based on skills and hours committed The ideal candidate should have prior experience in creating well-optimized, efficient, and scalable systems. Familiarity with real estate platforms will be considered a plus. It's vital that the successful freelancer can collaborate ef...

Project Description: We are seeking an experienced developer to enhance our existing project, which consists of a Laravel API backend and a Flutter-based admin frontend. The project is already functional, but we require additional features, optimizations, and improvements to meet our evolving requirements.

I'm in need of an experienced developer skilled in Laravel and Vue.js to focus primarily on backend initiatives for my project. Here's what I'm looking for: - Proven experience with Laravel and Vue.js - Expert in backend development For this job, the task is backend 2-3 updates The timeline for project completion is urgent, hence requiring a dedicated personnel who can devote time and effort to achieve this aim as soon as possible. If you can fit into this role effectively, don't hesitate to bid. Let's make this work!

Ecommerce Website backend laravel(API + frontend Vue), frontend Vue Need to add: 1. Payments ~ Backend: Implementation of payments in the script, adding the ability to activate and deactivate in the admin panel, edit, and change authentication data ~ Backend: Implementation of callback from the payment server to confirm payments and/or another communication protocol confirming the transaction ~ Frontend: Adding a payment button during order checkout 2. Payments ~ Backend: Implementation of payments in the script, adding the ability to activate and deactivate in the admin panel, edit, and change authentication data ~ Backend: Implementation of callback from the payment server to confirm payments and/or another communication protocol confirming

I need phonepe payment gateway to vbe integrated and if the code has minor e...pay u for the same I am seeking a skilled Node developer who can help me with API integration of a payment gateway into my existing project. The task is primarily focused on integrating the Phoebe payment gateway. Your responsibilities would include understanding the integration process of this specific payment gateway and implementing it seamlessly into the backend. Specific Skills and Experience: - Expertise in Node.js for backend development. - Past experience with API integrations, particularly payment gateways. - Knowledgeable about the Phoebe payment gateway. - Database management experience is a significant plus. Looking forward to proposals from candidates who are able to handle this t...

My current website, built on WordPress, needs to be migrated to a PHP script platform. To effectively execute this project, a candidate ideally must: ...a PHP script platform. To effectively execute this project, a candidate ideally must: - a full stack developer - Have extensive experience in both WordPress and PHP script, especially with the migration process between the two. - Possess strong expertise in performance optimization. - Be able to ensure smooth transition with minimal site downtime. Proficiency in managing website databases, backend functions, user interface, and web server configurations would also be highly appreciated. The completion of this project will be deemed successful if there is minimal impact on site SEO, enhanced website performance and better load...

I'm seeking a proficient developer in web applications. My vision is an e-commerce platform that encompasses significant...e-commerce platform that encompasses significant features such as; - User registration and login - Product search and filtering - Payment integration While specific target users are not yet defined, bear in mind that the system should be broad enough to cater to diverse audiences. Your role will focus on producing a robust and scalable solution, which means skills and experience in UX/UI design, backend development, and security measures are necessary. An understanding of e-commerce business strategy will also be advantageous. Anticipate multiple iterations as per user feedback and system optimization. Share your prior portfolio on similar projects whe...

...separate my backend from the frontend. This task is critical to enhancing security in my software. Currently backend is in Python with Fast API and I'm Docker. Frontend is in React and in Docker. There are about 10 Fast API routes being queried by the frontend currently. Currently, my Docker containers are being hosted on Amazon Web Services (AWS) EC2, so proficiency with this platform is essential. Upon successful completion, the desired outcomes are: - Improved performance - Enhanced service isolation - Simplified development process Backend should have APIs that are protected with authentication and are exposed to the world to allow external services as well as frontend to connect and query. Knowledge of best practices for maintaining the separation ...

I need a Power App designed with multiple screens. This app will primarily be used by customers, with a critical functionality being data capture. Focus of this project is UI efficient for tablets and browsers App can be designed with Dataverse as a backend. One of required features is allowing customer to sign the form with stylus or finger. Data fields should allow input of diacritical marks. The original Excel form will be provided. You will need to break it into separate screens, implement controls for conditional logic, lookups, checkboxes, dropdowns, buttons etc Deliverable is the App export package. You'll help deploy it to my environment for testing The candidate should provide screenshots of Canvas Power Apps built to be considered.

...team and ensuring that project requirements are Stack: Blockchain Platforms: Ethereum, Hyperledger Fabric Smart Contracts: Solidity, Chaincode (GoLang) Decentralized Storage: IPFS, Storj, Sia Identity Standards: Decentralized Identifiers (DIDs), Verifiable Credentials Cryptography: Public-key cryptography, Zero-knowledge proofs Development Tools: Truffle, Remix, Ganache, Metamask Backend Development: Node.js, Frontend Development: React, Vue.js, Requirements: Proficiency in Blockchain Development: We're seeking a developer with expertise in blockchain technologies, including Ethereum, smart contracts, and decentralized applications (dApps). Familiarity with Cryptography: Knowledge of cryptographic principles and techniques is essential for this role, as our

I'm on the hunt for a skilled web developer who is proficient both in frontend and backend development. Key skills include: Frontend: 1. HTML/CSS 2. JavaScript 3. TypeScript 4. Angular.js 5. React.js Backend: 1. Node.js 2. 3. Django I require an e-commerce website to be developed. The ideal candidate will possess experience in designing user-friendly, responsive, and efficient e-commerce platforms. Please attach portfolio examples of your previous e-commerce site developments in your proposal. Proven experience in implementing e-commerce backends and integrating necessary APIs like payment gateways will strongly favor your application. A solid understanding of security and data protection is also vital.