Ecommerce develop jobs
I'm in need of a C++ expert who can build a tailor-made encryption solution for UEFI firmware during runtime. Aim is to develop an executable code that incorporates a unique encryption method. Let's establish a groundbreaking security standard together! The job requires: - Mastery in C++ to create an executable code - Deep understanding and experience in developing encryption methods from scratch - Expertise in UEFI firmware, especially in runtime processes - Ability to apply creative problem-solving strategies to develop a custom solution - Experience in data security is preferred Please note that this is not about implementing an existing encryption algorithm, but about being innovative and developing a method that doesn't currently exist. Let's ...
As an ambitious eCommerce business, I'm seeking a knowledgeable digital marketing professional to aid in increasing my sales conversions. I'm yet to establish a presence on any specific social media platforms, thus, there's a remarkable opportunity for you to steer the direction of this project and make an outstanding impact. Key Responsibilities: * Crafting and implementing effective digital marketing strategies * Guidance on selecting the most profitable social media platforms * Driving online sales growth Ideal Candidate: * Substantial experience in digital marketing, particularly in eCommerce * Proven track record of successful sales conversion increase * Versatile and innovative thinker with a strategic approach * Comprehensive understanding of differe...
I'm seeking a skilled AI programmer to develop an artificial intelligence that can create vibrant and varied abstract art images. The end goal is an AI system that can independently design art that is both striking and visually abstract. Key requirements include: - Extensive experience in AI programming and image creation. - A solid grasp of different color palettes, with emphasis on vibrant and varied schemes. - Familiarity with and understanding of abstract art principles. The successful candidate will have a portfolio demonstrating previous relevant work. Experience in the intersection between AI and art will be highly regarded, but is not mandatory.
I'm in need of a Shopify expert for updating product descriptions on my product page. The specifics of the tasks are as follows: - Comprehensive revisions of my current product descriptions, to be replaced with captivating, informative and SEO-op...in need of a Shopify expert for updating product descriptions on my product page. The specifics of the tasks are as follows: - Comprehensive revisions of my current product descriptions, to be replaced with captivating, informative and SEO-optimized content. Ideal skills for this task would be: - Proficiency in Shopify platform - Exceptional copywriting and SEO skills - Prior experience in eCommerce product description updates. Your proven track record in similar tasks will give you an edge in this project. I look forward to wo...
I'm looking for an individual with a solid understanding and vast experience with Spatial.io. The main objective of this role is to successfully implement interactive virtual ...and vast experience with Spatial.io. The main objective of this role is to successfully implement interactive virtual tours on our project. Ideal skills and experience: - Mastery of - Extensive experience with interactive virtual tours - Proven track record of past successful projects similar to this Responsibilities: - Execute the integration of on our platform - Develop interactive 3D virtual tours Application requirements: - Please provide examples of past work - Detail your experience with - Submit a comprehensive project proposal. Looking forward to your applications!
...Google review links that visitors can use to leave reviews on our products. 2. Shopify Store Integration: We are not looking for a standalone tool. The solution should be tailored to seamlessly integrate with our Shopify store. The ideal candidate should possess significant experience working with Google Maps API and Shopify platform. Proficiency in PHP, JavaScript, User Interface / IA and eCommerce will be valuable for the successful execution of this project. Previous experience creating similar applications will be a significant advantage. I need someone to create a google review link generator that I can host on my Shopify website. I need two form fields, email and business search, when they input the business and search it, the review link will automatically send to their...
For this project, I'm seeking a professional who specializes in motion analysis, specifically in the domain of vehicle mechanics. The main focus will be on the motion of vehicles, in pursuit of determining torque requirements for motors. Key Responsibilities: - Analyze the motion of vehicles in detail. - Detect and measure key parameters that influence the required torque for motors. - Develop an accurate model to predict the torque necessary under different conditions. Ideal Candidate: - Has a background in mechanical engineering or a relevant field. - Is experienced with motion analysis and modeling. - Is adept at using software or tools pertinent to motion analysis. The aim is to understand and predict the torque requirements for motors, providing valuable insights t...
I'm looking for a talented musician to help me create a country music score for a set of lyrics. You'll be adding the melody to the already completed lyrics sung by a vocalist. Key Tasks: - Develop a country music score that is in sync with the lyrics - Adjusting the tempo and volume as required - Addition of sound effects to enhance the overall musical piece Instruments: - It's essential to primarily use an acoustic guitar in the composition. However, feel free to use other instruments suitable for the genre. Ideal Freelancer: An ideal candidate should have extensive experience in music composition, particularly in country music. A strong understanding of acoustic guitar usage and effects, and an ability to work on tempo and volume modification, will be critical...
...motivated Smart Contract Developer to join our team on a project basis, with the potential for long-term collaboration. The successful candidate will be responsible for developing a robust arbitrage smart contract utilizing flash loans. This role offers a unique opportunity to not only contribute your technical expertise but also share in the profits generated by your work. Responsibilities - Design, develop, and deploy an arbitrage smart contract using flash loans across various blockchain platforms. - Conduct thorough testing and debugging to ensure security, efficiency, and scalability. - Collaborate with the team to analyze market opportunities and integrate the smart contract with current and emerging DeFi protocols. - Provide ongoing maintenance and updates to the smart co...
Building a comprehensive online directory and community platform specifically for the drone industry. This platform will be the go-to resource for drone pilots, businesses, and enthusiasts, fostering connections, education, and industry growth. For a detailed breakdown of the project requirements, please visit this public Notion page: Ideal Partner: Proven experience in building complex web platforms. Strong understanding of SEO best practices. A portfolio showcasing expertise in user experience (UX) design. Experience integrating with social media platforms. Excellent communication and collaboration skills. Additional Information:
I'm in search of an experienced IoT designer to develop a simple yet innovative system for monitoring humidity and temperature in buildings utilizing LoRa (Long Range) technology. Your role is to ensure a seamless wireless communication and direct uploading of data to the cloud, resulting in real-time monitoring and data collection delivered to a personal real time base database such as Postgres. Here's a summary of what I require: * Real-time monitoring and collecting humidity and temperature data from residential and commercial buildings. * Designing a system that is not only efficient but allows easy installation and setup. * Integration of the system with a cloud-based personal real time base database. Skills and Experience Required: * Proven experience in IoT des...
...process takes as inputs a number of separate excel workbooks. The existing R code cleans and transforms them (including new variable calculations, aggregation and summaries, and adding data scaffolding), and outputs a single multi-sheet excel workbook for further use in a Tableau dashboard. The existing R code uses tidyverse packages, and is modular and well-documented. For this project, we need to develop a new Tableau Prep workflow that should replicate the data cleaning process that I have written in R. Skills and Experience Requirements: - Proficiency in R, specifically including tidyverse. - Expertise in Tableau Prep, specifically the ability to design clear workflows. - Experience with data cleaning and transformation in both R and Tableau. Please only bid if you have exp...
...understanding of payment gateways and merchant accounts - Strong problem-solving skills and attention to detail - A good track record of successful similar projects It’s crucial to understand that Shop B does not have its own merchant account - it solely relies on Shop A's account for all transactions. Both shops carry some similar, but also a variety of distinct products. Candidates with such eCommerce project experience will have preference....
I'm seeking an experienced digital marketing professional to setup a Meta Ads campaign for my business. Focused on increasing brand awareness, the campaign will be tailored towards specific demographics, particularly homeowners. Prime Duties: * Develop a sophisticated Meta Ads strategy * Execute, monitor and optimize the campaign The ideal candidate will: * Have extensive experience in Meta Ads * Understand how to effectively target homeowners for maximum engagement * Exhibit knowledge in brand building strategies using digital platforms * Demonstrate a proven track record in similar projects. Please include past experiences and expected outcomes in your bid. Let's elevate brand visibility together. You need to be able to work remotely, i.e via anydesk or teamvi...
I am seeking a proficient programmer to develop a scraping application for the purpose of extracting text data from websites. This project is sensitive, considering that the targeted websites demand API keys for access. Accordingly, the ideal candidate should be familiar with both GET and POST methods as well as API integration and management. Experience with data extraction and web scraping from API authenticated websites is a must. Skill requirements: • Web scraping • HEADERS • CUSTOM HEADEARS • STRINGS • URLLIB • Working knowledge of GET & POST methods • Experience with API authentication • Exceptional skills in data extraction, especially text. • loliscript • SilverBullet
I need an expert in , particularly in setting up sequences for lead generation. This person will work with me to launch multiple campaigns aiming to generate more leads in the technology sector. The ideal partner should: -Have extensive experience with and lead generation -Be knowledgeable about technology market trends and demographics -Have successful past campaigns targeting tech professionals or IT decision-makers The person hired for this project will assist in setting up multiple campaigns within : - to urge people to sign up and use our solution. - Another campaign to educate, - another campaign to schedule appointments
I’m looking for an experienced developer who can develop emailers. I am using - Zoho
I require an expert in Wix to develop a custom jewelry shop. My existing Wix account needs to be revamped for a more professional and stylized aesthetic. In terms of functionality: - The site needs to incorporate separate product categories. - I also offer custom engravings, thus the site should include an option for customers to input their desired engraving. This customization feature should be seamlessly incorporated into the site for a smooth customer experience. - Safe and secure payment gateway integration is crucial. - In addition, I intend to include Instagram integration for promotional and marketing purposes. As for inventory, I plan to list fewer than 50 different jewelry items. As such, the site design should be suitable to accommodate this volume without appearing c...
I'm looking for an individual with a solid understanding and vast experience with Spatial.io. The main objective of this role is to successfully implement interactive virtual ...and vast experience with Spatial.io. The main objective of this role is to successfully implement interactive virtual tours on our project. Ideal skills and experience: - Mastery of - Extensive experience with interactive virtual tours - Proven track record of past successful projects similar to this Responsibilities: - Execute the integration of on our platform - Develop interactive 3D virtual tours Application requirements: - Please provide examples of past work - Detail your experience with - Submit a comprehensive project proposal. Looking forward to your applications!
I am seeking the skills of an experienced website developer to create an ecommerce website catering to the sale of physical items, specifically within the realm of clothing and accessories. The Important Functionalities: - The website should not only present our products beautifully, but it also must provide a smooth, easy, and clear user experience. - It should allow customers to leave reviews for products, enhancing the usability and value of the site for other visitors. Ideal Skills: - Previous experience with ecommerce website development, especially in the clothing and accessories niche is a huge plus. - Proficiency in managing customer review functionality is a must. By demonstrating a strong understanding of these needs, you'll stand a great chance...
I am seeking the skills of an experienced website developer to create an ecommerce website catering to the sale of physical items, specifically within the realm of clothing and accessories. The Important Functionalities: - The website should not only present our products beautifully, but it also must provide a smooth, easy, and clear user experience. - It should allow customers to leave reviews for products, enhancing the usability and value of the site for other visitors. Ideal Skills: - Previous experience with ecommerce website development, especially in the clothing and accessories niche is a huge plus. - Proficiency in managing customer review functionality is a must. By demonstrating a strong understanding of these needs, you'll stand a great chance...
I'm seeking to develop a strong, standout brand which connects with my target audience - young adults, parents and professionals. The goal of this project is two-fold: 1. Attract new customers 2. Establish a firm brand identity Here are what I envisage: Trustworthy Appeal: My brand must emanate trust to connect effectively with my audience. Innovation: A crucial requirement of the project is instilling a sense of innovation into the brand's identity. Skills and Experience: Successful candidates must show - - Extensive experience in branding and marketing, aimed at my target demographic. - Ability to create compelling narratives that resonate with diverse audiences. - Ability to incorporate innovation and trustworthiness into a brand's visual and verbal identity. ...
I am looking for an experienced and engaging social media expert to help reach out to victims of fraud using Instagram and TikTok. I need someone with exceptional content creation skills to: - Develop informative posts that explain the fraud scheme including a link to our free book at to educate victims. - Use strategic hashtags to increase our reach and raise awareness about the fraud. It's essential for you to understand the digital landscape and have a knack for creating compelling, relevant content. Additionally, previous experience with social advocacy, online fraud prevention, or a related field is highly desired. Together, we can help victims of this fraud and expose the hidden reality.
I'm in need of a creative, yet practical design for food packaging specifically intended for namkeen products. The preference is for a medium, family-sized package that fits in seamlessly with the daily needs of consumers. Key requirements: - Develop a design in line with the nature of namkeen products - a spicy, savory traditional Indian snack. - The packaging should be indicative of the product inside while maintaining visual appeal. - It is crucial that the packaging is fit for medium-sized quantity -goes in line with daily family consumption. Ideal candidate skills and experience: - Prior experience of designing packaging for food items, preferably traditional snacks. - Familiarity with Indian snack (namkeen) market would be a plus. - Ability to design packaging with cu...
The site will sell automotive parts and wheels and tires. This would be an ongoing position as the site will continue to incorporate new changes
...experience in the following areas: - Setting up an Amazon account - Optimizing product listings to enhance visibility and customer interest - Managing the inventory within my Amazon account - Addressing and managing customer reviews In addition, I intend to integrate Shopify into my operations and need someone who is well-versed in managing multiple eCommerce platforms. Potential candidates should have a strong background in eCommerce, specifically Amazon and Shopify. Skills and experience in inventory management, customer service, and SEO practices are recommended for this role. A keen eye for detail and a strategic approach to increase product visibility and drive sales are also essential. Previous experience in setting up, maintaining, and optimizing Ama...
I am seeking an experienced content writer to create engaging and persuasive content for my e-commerce website that sells physical toys. YOUR RESPONSIBILITIES: - Craft compelling product descriptions for a range of toy products. - Create SEO-friendly headlines, meta descriptions, and image captions. - Develop informative, engaging content for the About Us, FAQ, and other site pages. IDEAL CANDIDATE REQUIREMENTS: - Proven experience in writing product listings and e-commerce content. - Understanding of SEO best practices. - Knowledge of children's toys and familiarity with industry trends would be a plus. - Outstanding attention to detail and strong customer-centric mindset. Your main goal will be to sell our range of toys online, making our product offering irresistible to th...
*We are seeking a skilled senior React.js developer with experience in GraphQL to help us develop our dating websites project. The ideal candidate should have a strong understanding of React.js and , as well as a solid background in team collaboration. This is a monthly basis project. The successful candidate will work closely with our team to bring our vision to life and deliver a high-quality dating website that meets our requirements. Key skills for this role include: - Robust user authentication system - Real-time content and interaction updates - Seamless integration with various third-party APIs, crucial for expansive functionality Ideal candidates should have extensive experience in: - Building and maintaining large-scale social media platforms - Implementing complex user ...
...aspects of my network traffic. Key Requirements: - Proficiency in Suricata and nftables, with the ability to educate me in both areas - Experience in visualizing network data using Grafana or a similar free tool compatible with Raspberry Pi 4 and Raspbian OS. Primary Objectives: - Visualize Network Traffic, Firewall Rules, Port scanning, and Ping Requests from Suricata and nftables logs. - Develop a basic step-by-step documentation guide to maintain and recreate the visualization processes in the future. Ideal Qualifications: - Experience with Raspberry Pi 4 and Raspbian OS - Proven skills in network security protocols - Previous examples of visualized data using Grafana. I am eager to learn and ready to collaborate. I welcome all experts who are up for the challenge! ...
I am in need of a professional website developer to build a custom website for my online leather products with custom painting business. The...with Nike shoes custom painting . 2. Customization Feature: Website should have a feature for customers to upload their desired pictures that they want us to paint on the products I have 3. Sales Platform: The key purpose of the website is to facilitate the online sale and purchase of these customized artworks. Ideal candidates for this project will have prior experience in developing eCommerce websites and implementing custom product features. A strong understanding of UI/UX principles, with some familiarity with the art industry is a bonus. Your portfolio showing similar projects will be highly appreciated. Looking forward to your p...
...using these data. We are seeking to integrate MATTER standard support to our devices to open new possibilities with other smart devices and platforms. We need someone who has experience with MATTER. Just one important thing We asked our partner to develop this but he faced a issue that stopped the project in its tracks To be 100% compatible with MATTER and to be able to say our devices are compatible, we must have a certification To be able to have that kind of certification we must be recognised by the organisation Being accepted to develop in a testing environment is easy and free Being able to register a product in a live environment and be able to sell it, it seems to be more difficult. There's a high annual fee to be an "official" developer/provider...
...Engineer with a minimum of 2 years of experience to join our dynamic team. The ideal candidate will have a strong background in developing firmware for embedded systems, particularly with Raspberry Pi and STM32 microcontrollers. As a Firmware Engineer, you will be responsible for designing, implementing, and testing firmware solutions to meet project requirements. Responsibilities: Design and develop firmware for embedded systems using Raspberry Pi and STM32 microcontrollers. Collaborate with hardware engineers to define system architecture and specifications. Implement firmware features to meet project requirements and deadlines. Debug and troubleshoot firmware-related issues throughout the development lifecycle. Perform code reviews and ensure code quality and adherence to co...
...as part of a remote team. Key responsibilities: • Develop and maintain production-ready React Native applications with seamless integration of our cat tracking collars. • Implement background communication with the collar devices, prioritizing reliability and scalability. • Utilize RxJS for managing asynchronous operations, particularly for multi-device support. • Leverage AWS services, including Lambda, S3, and DynamoDB, to integrate cloud functionality into the application architecture. • Utilize and Node.js for backend development tasks, ensuring smooth communication between the mobile app and server. • Experience with Kotlin/Swift is a plus, especially for handling platform-specific tasks related to BLE communication. • Develop a CI/...
I'm seeking a highly creative graphic designer with a signature minimalist style to develop a company logo. Name of company: VINAIO Slogan: Reliable italian Key Requirements: - Utilize blue as the primary color, as it's reflective of our brand. - Incorporate a minimalist design aesthetic, which aligns with our belief in simplicity and clarity. - The logo must embody the essence of professionalism as it's the cornerstone of our company's values. The ideal freelancer should have a strong portfolio that shows their ability to create clean, minimalist designs and a clear understanding of color theory. Previous experience in creating company logos is a plus.
...chosen developer will then be required to deliver the complete website, fully operational on our domain, within 15 days or less after being declared the winner. Project Details: - Product: Sensorios is a comprehensive ceiling-mounted sensor for air quality monitoring. Our services include installation and maintenance of these sensors. - Website Features: The website will be simple, with no ecommerce, payment gateways, or complex applications. It should be responsive, user-friendly, and optimized for search engines. - Attachments for Reference: Participants will find attached important files such as our logo, render images of the product, and our product pitch deck to aid in their design proposals. - Budget and Future Opportunities: We are on a budget, hence looking for freel...
I am in search of a professional Flatsome UX Blocks Product Page Designer for my existing Dokan and WooCommerce platform. The role involves creating a comprehensive product page layout with a traditional and professional approach. • Ideal skills: Flatsome UX Blocks proficiency, understanding of WooCommerce and Dokan, seasoned in eCommerce page layout design. • Design to include: - Product images and descriptions - Pricing and availability information - Customer reviews and ratings The design should appeal specifically to business customers. You would have ideally designed similar pages for this demographic before. Understanding their navigation and purchasing habits will be a plus. A professional style and feel should be maintained to match their expectations...
I'm seeking a savvy digital marketer specializing in Instagram to help drive online course lead generation. - Key Responsibilities - Craft compelling informational articles to engage and educate the target age group of 18 to 40. - Develop an effective marketing strategy to maximize the potential of my strong Instagram presence and to increase my course visibility. - Ideal Skills and Experience - Proven experience in Instagram marketing and lead generation - Excellent content creation skills, particularly informational articles - Deep understanding and knowledge of marketing to the 18-40 demographic - In-depth understanding of Instagram algorithms and visibility optimization techniques Ultimately, I need a partner to help translate my online course into a mu...
You will have to share the concept before finalizing the order AND 100% Payment after work completion. Agencies planning to get the work done through trainee please excuse. We need experienced people. A leading recruitment consultancy is seeking proposals from qualified web development agencies to design and develop a new website. The website will serve as our primary online platform for attracting top talent, showcasing our services to clients, and managing the candidate experience. Project Objectives Enhance brand awareness and credibility: Create a visually appealing and user-friendly website that reflects our professional image and reinforces our position as a trusted recruitment partner. Use interactive elements like sliders, animations, Visual Storytelling: or dynamic tra...
...and , creating a unified system that streamlines data management and accessibility. Key Responsibilities: 1. Syncing Invoices - Establish a daily synchronization process between and to ensure real-time updates of invoice data. - Implement robust error-handling mechanisms to address any discrepancies during synchronization. 2. Payment Status Updates - Develop a reliable mechanism to update payment statuses on based on data changes in monday.com. - Ensure accuracy and consistency in payment status updates. Ideal Freelancer Skills and Experience The ideal candidate will possess the following qualifications: 1. Proficiency in JavaScript, Python and lead API tools: - Demonstrated experience in at least one of the languages, with the ability
...Multi-Platform Compatibility: The application should be seamlessly accessible on both Android and iOS devices. E-commerce Functionality: Incorporate essential features for E-commerce, including product browsing, search, selection, and purchase. User Experience Similar to Carrefour: We aim to emulate the user-friendly experience and functionalities provided by Carrefour's application. Web Dashboard: Develop a robust web dashboard to manage inventory, orders, customer data, and other administrative tasks efficiently. Payment Integration: Secure and seamless integration of payment gateways for smooth transaction processing (Local Egyptian payment gateways). User Accounts and Profiles: Implement user account creation, login, and profile management functionalities. Order Tracking...
...skilled mobile application developer to create a feature-rich Public Information and eCommerce app for both iOS and Android operating systems. Key Responsibilities and Features: - Creating a using my draft UI (Figma design) - Developing a flowing information feed feature - Implementing robust user profile capabilities - Configuring reliable push notification system - Incorporating seamless e-commerce functionality Ideal Skills and Experience: - Proven experience in both iOS and Android app development - Prior work on public information and/or e-commerce apps - Proficiency in creating effective UI/UX designs - Capability to build reliable notification mechanisms - Familiarity with user-friendly eCommerce integration. Your expertise will enhance the project's succ...
I have a varied set of marketing objectives such as enhancing the recognition of my brand, generating leads and driving traffic towards my website. In this regard, my primary audience is B2C (Business to Consumer). The successful candidate will design and implement a marketing strategy that uses a blend of social media and email marketing tactics. The marketer will be expected to: - Develop social media campaigns that can create awareness and draw visitors to the website - Conduct some lead generation initiatives - Oversee an email marketing drive aimed at engaging our consumer audience further The ideal individual should have substantial experience in both social media and email marketing, with a proven track record in achieving similar marketing objectives. Success in this posi...
I'm seeking a capable freelancer to develop an automated system for mass communication. This should be done through Gmail, specifically designed to send emails to multiple recipients per row from a Google Sheets list. - Execution: The freelancer will create a Gmail automation, coordinating it with data from Google Sheets, following the specifics given. One email should reach multiple receivers, corresponding to each row in the sheet. The Google sheet has the following columns From Contact To CC Bcc Sent The sent column indicates whether the email was sent successfully or not - Timeliness: I require this project to be completed in a week. It's a medium-term turnaround that will require dedication and proficiency. Ideal freelancer's qualifications: - Extensiv...
I'm seeking an experienced 3D artist to develop a detailed visualization of a business model. You should have a profound understanding of 3D design and product visualization, particularly for business contexts. The final output should be a comprehensive and detailed 3D drawing that effectively translates complex business ideas into clear, visual language. Key Requirements Include: - Proven experience in 3D drawing specifically for business models. - Ability to capture the specific features of a SaaS platform. - A strong portfolio demonstrating your versatility with different 3D design projects. Ideal skills: - Proficient use of modern 3D design tools and software. - Excellent attention to detail. - Strong communication skills to understand the project brief accurately. - Ex...
I need to develop a way to work with two or more driver apps connected at the same time, ex 99, uber, in driver
I'm seeking an experienced Business Analyst or Web Researcher to examine and assess the strategies of unspecified competitors in the ecommerce industry. Your primary task involves a thorough competitor analysis. Key Responsibilities: - Rival companies' identification without any provided leads. - Construct an in-depth analysis of those competitors. Ideal Skills & Experience: - Significant experience in retail competitor analysis - Ability to self-identify relevant competitors - Efficient and accurate data collection and interpretation - Strong critical thinking and analytical skills. By having a deep understanding of our competitors, we hope to identify our weaknesses and opportunities for growth. Your analysis will play a crucial part in our strategic planning.
I'm looking for a developer with intermediate-level expertise in SwiftUI to work on a mobile application specifically designed for the iOS platform. Your role will be critical in developing, testing, and maintaining this application. Key responsibilities: - Conceptualize, design, and develop efficient and intuitive features for our iOS application. - Consistently optimize the application for maximum speed and scalability. - Collaborate with me to understand my needs and translate them into functional requirements. Ideally, you will have: - Intermediate-level experience in SwiftUI. - Proven experience in iOS application development. - A good understanding of working with iOS frameworks. - Familiarity with Apple's design principals and application interface guidelines. - A...
