Looking for python developer työt

I have a list of URLs stored in Mongodb. ...Mongodb. The link connects to specific web pages and I need the underlying data from: 1. Line charts 2. Bar charts All the data that is required to be captured is in the webpage code. There are specific rules on data capture that have been specified and a prior scrap project has this already setup and the code (Python) could be re used. The data scraped needs to be stored in Collections on MongoDb. The scrap program needs to run on an Amazon Light sail Linux instance. Please only apply for the role if you have experience with this work and have successfully completed such project before. An advanced knowledge of scrapping and Mongdb is essential. A detailed specification has been developed and will be shared with genuine appli...

I'm in need of Spanish websites or blogs to publish informative articles. However, there are specific requirements in place that need to be met. Requirements: - Domain Authority (DA) above 20 - Content in Spanish - Spam score should be less than 5% Ideal Skills: - Proficiency in Spanish is essential - A good understanding of SEO and website met...Requirements: - Domain Authority (DA) above 20 - Content in Spanish - Spam score should be less than 5% Ideal Skills: - Proficiency in Spanish is essential - A good understanding of SEO and website metrics - Experience in content publishing and website analysis This is a monthly project where we intend to publish informative articles in Spanish. The websites/blogs need to meet the set criteria for consideration. Looking forw...

I am seeking a proficient prog...You don't need to integrate a login system, as access to this information is free. - Use UPC data to perform a search on eBay to see if the item is available on the platform. - Generate a profit prediction report based on eBay's item purchase history. The ideal freelancer for this job would have great scraping skills, experience with eBay's API, and be able to develop a friendly user interface. A background in eCommerce profitability analysis would also be advantageous. Key programming languages for this job include Python and JavaScript. Previous experience with web scraping libraries (BeautifulSoup, Selenium, etc.) is vital. End goal is to create a system that aids in making profitable product sourcing decisions, ba...

I'm on the lookout for a proficient Elementor Developer who can transform a Figma design into a fully-functional landing page. The design provided is the blueprint to work from, but you're welcome to make adjustments to ensure it's visually appealing and optimized for lead generation. Key project details: - I've purchased the Litho theme, which you're encouraged to use if it suits the project. - While the Figma design sets the creative direction, there's room for some flexibility to improve the overall outcome. Ideal skills and experience: - Proficiency in Elementor is crucial - Prior experience with lead generation projects - Ability to translate design into a user-friendly, high-converting landing page - Knowledge of the Litho...

I'm in search of a highly experienced SharePoint developer to handle the development of SharePoint workflows. Ideally looking for a Sharepoint developer with accompanying graphic design skills, but we also have in-house designers who can support the project. Key responsibilities: - Develop SharePoint workflows: Create efficient workflows that align with our business processes and enhance productivity. - Desktop user support: The workflows should be exclusively designed for desktop users. Ideal candidate: - Proficient in SharePoint: A seasoned expert in developing SharePoint workflows. - Strong problem-solving skills: Ability to understand and work around complex business processes. - Attention to detail: Ensure workflows are accurately implemented...

I'm in need of an experienced Drupal 10 developer to assist with a few tasks on my website. The tasks will mainly revolve around theme customization, module development, and general site maintenance. Skills and experience needed include: - Proficiency in Drupal 10 - Strong background in theme customization - Proven experience in module development - Ability to carry out site maintenance effectively Looking forward to your bids!

I'm looking for a skilled developer to create an AI interview tool. The main features of this tool would include: - Questions appearing in front of candidates - A microphone icon for answering - Real-time speech-to-text conversion, using Whisper or Google TTS API. - AI to verify the answers using AI . The primary focus of this tool's development is ensuring the accuracy of the AI in verifying answers. Skills and experiences that would be ideal for this project include: - Proficiency in Python - Front end - ReactJS - Experience in creating AI-powered applications - Familiarity with speech-to-text conversion processes - Knowledge of developing user-friendly interfaces. Please reach out if you're confident in your ability to deliv...

..."Expert Statistician Needed for Advanced Probability and Statistical Analysis Project" Job Description: We are seeking a highly skilled statistician to assist with a complex statistical analysis project. The project involves a detailed examination of discrete random variables, probability density functions, exponential processes, normal distribution analysis, and sensitivity and specificity calculations. The ideal candidate will help in solving intricate problems related to electronic device lifetimes, network flow sizes, and evaluation of lie detector test effectiveness using statistical models. Responsibilities: Analyze and compute probabilities related to medium access control protocols and network flow sizes. Develop and validate mathematical expressions for...

I'm looking for a full stack developer to make several key improvements and integrations to my existing spreadsheet editor. - **Adding New Formulas:** The first key task is to introduce new formulas to the existing spreadsheet editor. I need a professional who is well-versed in developing and integrating custom formulas to spreadsheets. - **Improving User Interface:** The editor's current interface needs a major upgrade. Your role will include enhancing the visual design to make it more modern and user-friendly. We also need to simplify the navigation within the editor, ensuring it's intuitive for our users. Drag-and-drop functionality is another key aspect that needs to be integrated. - **Integrating with External APIs:** The editor needs to b...

I need an example of how to set up React with a Python backend executing locally inside of an Electron environment. We will be using it to parse local files from the file system and perform analysis. The method of interacting with Python should be the most simple, but is up to you. We will provide a Github repository for work upon selection. This should take 10 hours or less, it is a simple prototype.

I need a web developer to create a basic interactive site using HTML/CSS/Javascript and any UI framework. - **Features Required**: - Login/Sign up/User Profile system - A unique interactive feature (e.g. an interactive map) **Requirements**: - Implementing custom authentication system for login/signup/user profile functionalities - Incorporating a unique interactive feature to enhance user experience - Utilizing HTML, CSS, Javascript, and a UI framework of your choice The ideal candidate will have experience with UI/UX design, web development, and creating interactive features. I will send the wireframes for an overview of how the site could look like. i need a developer who can do this in a day or two. Thank you

I am looking for a someone to design a logo / app icon for my dating app. The app is called BokBok (Bok means Hi in Croatian) and its a dating app that uses videos as the main way of communication. From Video profiles to video chat, everything is done with videos. Currenty we have some logo in place and you can see it at https://bokbok.io. We are looking for a new one thats more polished, professional looking and representative of our brand Here are some of the requirements: - Use only existing colors (#A80051,#FFFFFF,#fbf2f6) - If possible do not include any text (just latter 'B' or 'b' is ok if it looks good) - Logo should be simple and modern - Logo should be in vector format - Idealy make a few different versions - circle,...

...am in need of a skilled front-end developer proficient in HTML and CSS to help bring to life a new landing page. Key Points: - The project will involve turning existing design files into a fully functional web page, so a strong understanding of front-end development is essential. - The landing page must be responsive, providing a seamless experience across various devices, and ensuring the content is appropriately displayed on different screen sizes. - Cross-browser compatibility is also a must. The page should render correctly and consistently on all major browsers such as Chrome, Firefox, Safari, and Edge. - Windows size: 2560x1440 Ideal Skills and Experience: - Proficiency in HTML and CSS. - Prior experience in front-end development, particularly for landing pages. -...

I've got a small Python script that runs on my desktop and I need it to be translated into C# for better integration with the rest of my software. I need a skilled programmer with experience in both Python and C#. Unfortunately, I have not been able to make the script run successfully on Windows, but it works on Linux (WSL). For: Python script (I will provide full script): import grpc from chirpstack_api import api server = "" api_token = "eyJ0eXAiOiJKV1QiLCJ......................87k2i66CulW7Y" channel = grpc.insecure_channel(server) client = (channel) auth_token = [("authorization", "Bearer %s" % api_token)] req = (dev_eui="00000000aabbccdd") resp = (req

--- Do not bid Template--- I'm seeking a Python engineer with expertise in Django and Flask to assist in building a web application. Key Requirements: - Expertise in Python, Django and Flask - Proven experience in web application development - Strong understanding of web technologies - More then 2 years experience in Web Development Your role will be to: - Develop new features and functionalities - Improve and scale the web application - Ensure the web application is secure, stable, and performant This is an exciting project, and 2 members working now. Explain about your experience and attach the links that have done.

I need a developer adept at integrating ZohoBooks with Power BI using REST API. The ideal candidate should possess these skills and deliverables: • Proficiency in ZohoBooks REST API and Power BI • Experience with complete, real-time data synchronization • Expertise in creating customizable dashboards on Power BI • Ability to visualize all types of data from ZohoBooks, including financial reports, customer data, and sales data. This should also cover timesheets, invoices, and profit/loss analysis • Capable of executing sales and financial analysis using Power BI The goal is to seamlessly analyze and monitor our data from ZohoBooks in Power BI. Developers with prior experience in similar projects will be preferred.

I'm in need of an Wordpress developer to build a website for my online community targeted towards professionals. The website should encompass e-commerce functionality, blogging capabilities, and seamless social media integration. Key Components: - E-commerce Functionality: The website should enable the sale of products/services to the community members. - Blogging Capabilities: The site should provide a platform to post relevant and engaging content for the community. - Social Media Integration: The website must be seamlessly integrated with various social media platforms to facilitate community engagement. The ideal candidate should: - Have a strong portfolio of creating similar websites with e-commerce, blogging, and social media integration. - Understand the...

...experience. I'd prefer to work with someone who is clever and learns quickly rather than someone experienced but is not very intelligent and/or does not solve problems scientifically. Would I hire an Isaac Newton or an Albert Einstein even if he had no programming experience? Of course I would. ✻ TESTS ✻ You must pass several difficult logic tests to work with me. The first logic test you complete for me will be an unpaid logic test. In other words, I would not pay you any money whatsoever if you were to pass the first logic test. However, I would pay you $25 (Twenty-Five Dollars) if you were to pass the second logic test, and $50 (Fifty Dollars) if you were to pass the third logic test. ✻ OBTAINING SUPPLIES ✻ I will send you approximately $50 (Fifty Dollars) so that ...

We are seeking a skilled and affordable WooCommerce developer to create a simplified version of a custom artwork and ordering e-commerce website. The project is inspired by store (attached url screenshot) and involves building a user-friendly platform for "do it yourself" design promo product customization. Key Requirements: E-commerce Platform: WooCommerce Categories and Products: 4 main categories as umbrella sections 10 subcategories with individual products Customization Features: DIY drag-and-drop functionality Artwork review and approval system Project Scope: Develop a streamlined e-commerce website with WooCommerce. Implement a drag-and-drop feature for product customization. Ensure users can review and approve their custom artwork before placing...

I'm looking for a skillful developer to create a text recognition ( English language) algorithm that can be implemented on Raspberry Pi 4B. The main objective is to develop a system capable of accurately extracting text from natural scene images. Accuracy is essential, with the expected range standing between 88% and 95%. Key Requirements: - Understand the principles of text recognition, and possess the skills in developing a feasible and efficient solution. - Must be capable of programming in Python or similar languages – necessary for integrating the algorithm with Raspberry Pi 4B. - Familiarity with image processing and Raspberry Pi is highly beneficial, though not strictly compulsory. - The algorithm should be versatile enough to function ...

I am in need of an experienced app developer who can develop an apps iOS and Android. While I have not finalized the primary purpose of the app, it is a given that it would need to be user-friendly, intuitive, and innovative, with primary emphasis on its UX/UI design. Key Responsibilities: - Develop high-quality app iOS and Android and flutter , - Continual updates, maintenance, and iterations Ideal Skills and Experience: - Experience in designing and building mobile applications for iOS and Android - Expertise in UX/UI - Knowledge in all phases of software development - Strong problem solver Although there is no set timeline for this project, I am looking for someone who can dedicate consistent working hours to building and refining this application....

I'm seeking a developer to create a Solana sniper bot that can monitor token prices and execute trades automatically, identify and exploit price discrepancies across multiple exchanges, and provide real-time notifications on price movements. Ideal Skills: - Proficiency in developing trading bots - Familiarity with Solana blockchain and token trading - Experience in creating automated trading strategies - Understanding of price discrepancy identification and exploitation The programming language or framework to be used is not specified, so you're free to use what you believe is most suitable. I'm looking for a fully automated trading bot, meaning I'll have little to no need to intervene in its trading decisions. Please keep this in mind when deve...

I need a C# developer to create a desktop email marketing application. The application should integrate with Gmail, Outlook, Custom SMTP, Ses, and Email Verifier. Although I do not have a specific design or layout in mind, I would need assistance on this. Key requirements: - C# development skills - Experience with email marketing applications - Proficiency in integrating with Gmail, Outlook, Custom SMTP, Ses, and Email Verifier - Ability to design and layout the application Note: The partial application already developed , need to fix some bugs , need make Good UI software and Need to add additional features in next version. This project is not one time work, Need continuous work as a maintenance and new features addition work for version upgrades.

For my project, I need a talented blockchain developer versed in: - Smart contract development - Token creation The potential freelancer should have solid experience in programming languages such as Solidity, JavaScript, and Python. This is crucial as these are our preferred languages for blockchain development. The project would require a deft handling of: - Wallet integration - Exchange integration - Payment gateway integration Therefore, prior experience and success in these aspects would be beneficial. This project demands someone with a deep understanding of ERC20 token fundamentals and the ability to deliver flawlessly on the incorporation of these elements.

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

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

The project involves adding new features to an existing app. The main requirements are as follows: Wallet Customization: The app needs to include a wallet f...be implemented, enabling users to link their Snapchat accounts and share their achievements or rewards with friends. AI-driven Soccer Game Prediction: The app is linked to an AI system that predicts soccer game outcomes. Users who achieve high accuracy in predictions are eligible for a drawing, with prizes awarded to 10 winners. Adherence to Google Play Store policies is crucial. Targeted Marketing: In the future, the app will be used for targeted marketing. Paid subscribers will provide demographic information for precise targeting, while ensuring the app remains primarily recreational and minimizes the collect...

I'm seeking a Microsoft Certified SharePoint developer to assist with a variety of tasks on my SharePoint Online platform. Your expertise is paramount for this project. Your main responsibilities will include: - Customizing SharePoint sites to tailor them to our specific use cases - Creating efficient and reliable SharePoint workflows that align with our business operations - Integrating third-party applications with our SharePoint Online to enhance its functionalities and the user experience. Please note that mobile responsiveness is not a requirement for this project. The ideal candidate should have a robust knowledge of SharePoint Online, possess Microsoft certifications, and have a proven track record of successful SharePoint customizations and workflow cre...

We are looking for several motivated freelancers interested in creating simple and user-friendly websites on Odoo (1-4p). Proficiency in Python and experience with Odoo are required. We have a large number of Odoo projects to be completed per week, and if you are serious, we will offer you multiple projects per week. Please contact us. Thank you.

YOUR BID PRICE IS FINAL. NO LATER CHANGE IS ALLOWED. I need an expert in CWP panel and in VPS who can install Python, NodeJS websites in my server as docker container. You don't need to do any coding. My VPS server is with Hetzner and it is more than one year old. Please see the screenshot. My VPS has 4GB RAM, 80 GB Harddisk, and CentOS 7 with Root access. it is long term project. I need to install 2 Python apps as of now. My budget is INR 600 per successful installation. I will prefer AnyDesk or TeamViewer. Might need to work with my developer during installation and after installation need to clean up junk files, depreacted, not used files to save space of my harddisk. Lowest Bidder will win.

I'm currently looking for a skilled and experienced developer for backend CMS development. Key responsibilities: - Develop a Content Management System using PHP, Laravel, MySQL, and Python. - Design, implement and maintain python-based backend application. Essential Skills: - Proficient in PHP, Laravel, MySQL, Python. - Extensive experience in backend development. - Knowledge in CMS development and implementation. - Strong understanding of data structures and algorithms. Your analysis skills will also be put to good use to solve complex problems in this role. As an experienced backend CMS developer, you can expect to work closely with me to deliver a robust, performant, and scalable system.

I need a developer versed in Flask Celery to help integrate background task processing into my ongoing project. Key requirements for this job include: - Significant experience with Flask Celery, Apache2, Python and understanding of its nuances - Ability to introduce background task processing in an existing project - Capability to be flexible regarding the nature of tasks being processed Regarding timeline, I am hoping for a swift turnaround due to the urgent nature of this project. Your understanding is appreciated.

I'm in need of an experienced PHP+Android developer to assist in integrating a Recharge API. Key Responsibilities: - Implementing necessary API endpoints - Ensuring proper error handling and input validation - Creating a seamless integration between the app and the API Experience: - Proficiency in PHP, Android, and API integration - Strong understanding of error handling and validation best practices - Prior experience in implementing payment gateways or similar API integrations would be an added advantage Please bid if you have the necessary skills and experience to deliver a robust and user-friendly recharge system.

I'm an entrepreneur starting a D2C lighting company that will fill a unique, blue-ocean niche. I'm looking for a talented product designer to produce three initial original designs with the potential for a long-term relationship in the future. The perfect candidate should have: - Exceptional design skills with a focus on consumer products (lighting or furniture design experience a plus) - An understanding of consumer needs and market trends - this product MUST reflect current design trends - Previous experience in bringing a product from ideation to completion - (Ideally) previous experience helping to source and communicate with factories Sound like you? I'd love to talk!

i need a casino website and app. any developer who have already made such projects

Requirements: Experience with AI Development: The developer should have a strong background in artificial intelligence development, particularly in natural language processing (NLP) and computer vision. Proficiency in Machine Learning: Skills in machine learning algorithms and techniques will be essential for developing the recommendation system based on user preferences and scanned inputs. Knowledge of Image Processing: Since the project involves scanning images of menus, wine bottle labels, and food items, expertise in image processing techniques will be necessary to extract relevant information from these images. Familiarity with Conversational AI: Experience in building conversational AI agents or chatbots will be crucial for implementing the virtual Wine Advis...

I need a seasoned Blazor Developer to develop a MarkDig extension that allows markdown-rendered codeblocks to be wrapped by a custom Blazor component with a File Name and action link. UI Components (Input): 1. Markdown containing <pre> <code> ... </code> </pre> blocks (example included below) Key Operations: 1. Parse the Code Blocks out, wrap their content with a component containing a title and an action link Output: Rendered HTML containing the original code block wrapped in a component. Technologies: MudBlazor MarkDig Example Input (including ColorCode colorization): <div class="codebuddy-markdown my-4"><!--!--><p>To integrate the core functionality of uploading images to Azure Blob Storage using a Shared Access Sig...

I need a developer Create a landing page identical to this page %d8%b7%d8%b1%d9%8a%d9%82%d8%a9-%d8%a8%d9%8a%d8%b9%d9%86%d8%a7-%d8%b9%d8%b1%d9%83-%d8%a7%d9%84%d8%b3%d9%88%d8%a7%d8%ad%d9%84/ I want to design the page as a WordPress template so that I can install it at any time Taking into account colors, fonts, and compatibility with all devices Estimated turnaround time is 24 hours

I require a professional Python script to scrape a website for data. Key Requirements: - The script should be designed for a one-time run - The website does not have JavaScript dynamic content, so the script does not need to handle dynamic content The ideal freelancer for this project should have prior experience in: - Python programming - Web scraping - Handling static web content

I need one Flask developer for some easy tasks I need work for long term I need work from Pakistan or Indian Coder

I am in need of an expert developer who can modify my user registration screen to be only accessible to administrators. Key Details: - The platform or framework of the user registration screen is unspecified. So, having significant experience in multiple frameworks like PHP, JavaScript/Node.js, Python/Django will be beneficial. - The registration screen currently has some security measures in place. Knowledge of secure coding practices is a must for this job. - The chosen developer will bestow full permissions to the admin. Therefore, the freelancer should understand well about user permissions and roles in a web application environment. The perfect freelancer for this job should demonstrate strong attention to detail, proficiency in multiple coding...

...API Programmer to create an API in a language of your choice. The API should provide functionalities like data retrieval, data manipulation and data storage for text data. Key Points: - Create an API in a language of your expertise. - The API should be designed to handle text data exclusively. - The API should offer data retrieval, manipulation, and storage capabilities. Ideal Skills and Experience: - Proficient in API development and programming languages like Python, JavaScript, or PHP. - Strong background in handling text data. - Experience in providing data retrieval, manipulation, and storage functionalities via an API. Looking forward to working with a skilled professional to bring this project to life. ...................... Wir sind ein Unternehmen m...

I am looking for a freelancer who can extract specific data from a Swedish business directory using Python. Main URL: Key Objectives: - Extract company names, contact information (phone/email), and business numbers from the directory. Ideal Candidate: - Proficient in web scraping techniques - Strong command of Python - Previous experience with similar projects will be considered a plus. Please reach out if you have the necessary expertise.

I'm in search of a PHP Developer with a proven track record of developing comprehensive ERP Solutions for the construction industry. Key Modules Required: - Project Management - Cost Estimation - Procurement Specific Features for Project Management: - Task Management: The system should allow for easy task assignment and monitoring. - Resource Allocation: It should have a robust system for allocating and tracking resources. Specific Requirements for Cost Estimation: - Integrated Cost Database: The system should have a vast and well-organized cost database. - Calculation Formulas: It should accommodate complex estimation formulas. - Reporting and Analytics: The ability to generate detailed reports and analytics is crucial. Ideal Candidate:...

I'm looking for a skilled Python backend developer to enhance an existing backend system for my project. Key Responsibilities: - Enhancing the existing backend system: Your primary responsibility is to enhance the functionality of the current system and optimize its performance. - Integrating SQL/NoSQL Databases: Your expertise in SQL/NoSQL databases is crucial to ensure smooth integration and efficient data handling. - Experience with Python and Minio: If you're familiar with Minio that's a big plus, but Python is the key language you'll be working with on this project. Ideal Candidate: - Proven experience in enhancing existing backend systems. - Proficient in working with SQL/NoSQL Databases and designing queries. - ...

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

I'm in need of a proficient Wordpress developer to help me build a business website. I already have a specific theme in mind, so your role will be to ensure the site is not only created with this theme but also tailored to fit my business needs. Key responsibilities include: - Building a professional and user-friendly business website that aligns with the chosen theme - Including necessary functionalities such as a contact form, subscription/sign-up form, gallery/portfolio, and Google mapping skills - Ensuring the site is responsive and visually appealing - Providing recommendations on the theme if necessary and integrating my style preferences You should have: - Proficiency in Wordpress website development - Strong understanding of web design and user experience - Experienc...

I have a Python script that needs integration with a Telegram bot. The requirement is to connect the code with the Telegram bot to send questions from the Chegg website. Key tasks: - Integrating the existing Python code with a Telegram bot to send questions from the Chegg website - Automating the assignment of student IDs for each Chegg website task The ideal freelancer should have: - Proven experience in Python programming - Previous work with Telegram bot integration - Familiarity with Chegg website tasks and automation - Good understanding of API integrations Please share your relevant experience and any insights into how you plan to approach this integration.

I'm looking for an experienced WordPress developer, who can provide a comprehensive training for our developer. This project is unique in that we already have an in-house developer who is brand new to WordPress. The goal is to get them from beginner level to a point where they can comfortably handle WordPress development tasks. Key aspects of the training: - Explanation of WordPress architecture and functionality - Hands-on sessions covering Theme and Plugin development - Insights into customization and optimization best practices - Additional tips and tricks for effective WordPress development Ideal candidates should have: - Extensive and proven experience in WordPress development - Strong teaching skills and ability to explain co...

I am looking for an experienced app developer to build a mobile app for both Android and iOS platforms. The primary goal of the app is to facilitate e-commerce activities. Key Requirements: - Develop a mobile app for Android and iOS platforms - E-commerce functionality - Integration with PayPal for payment processing Ideal Skills: - Proficient in app development for both Android and iOS - Prior experience in developing e-commerce apps - Familiarity with integrating PayPal for payment processing