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Project Overview We are looking for an experienced full-stack blockchain developer to create a next-generation decentralized finance (DeFi) platform. The project involves developing a secure, scalable, and high-performance Web3 infrastructure, including smart contracts, backend services, APIs, and modern frontend. The ideal candidate has experience in developing ready-to-use blockchain applications and can work with the entire technology stack. Responsibilities - Design and develop the DeFi platform from concept to production. - Develop secure smart contracts using Solidity. - Create backend services using Node.js or NestJS. - Develop responsive frontend applications using React or Next.js. - Integrate Web3 wallets such as MetaMask, WalletConnect, and Coinbase Wallet. - Integrate blockchain networks including Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain. - Develop REST APIs and GraphQL services. - Implement staking logic, token management, and reward distribution where applicable. - Integrate price oracles and blockchain indexing services. - Optimize the performance, scalability, and reliability of the platform. - Write unit and integration tests. - Participate in architecture discussions and code reviews. - Prepare technical documentation. Required Skills - Solidity - Node.js - TypeScript - React.js / Next.js - Web3.js or Ethers.js - REST API / GraphQL - PostgreSQL or MongoDB - Docker - AWS, Google Cloud, or Azure - Git

Project Description It is necessary to make improvements to the existing website on Webflow: Integrate a product catalog into the site and suggest the most convenient way for its further updates (administrative panel, JSON/Excel import, or another solution). Check and fix the functionality of the application submission form. Check the website's design and unify the fonts and styles. Before starting work: assess the current state of the website; propose an optimal technical solution; specify the deadlines and costs; describe what access will be required.

The project involves developing a responsive web application with a clean UI, secure backend APIs, authentication, database integration, and deployment. Depending on the project scope, AI features such as chatbot integration, workflow automation, or LLM-powered functionality may also be required.

I'm looking for an OpenCart developer to complete work on a website. The project is already partially implemented: the main functionality is laid out through a ready-made template, but the site needs to be brought to a final working state. Main tasks: - refinement of the catalog; - configuration and correct display of product pages; - display of filters; - addition of missing attributes; - import of products from a CSV file. A specialist with experience in OpenCart, product catalogs, filters, attributes, and data import is needed. Please send: An example of a similar project. An estimated deadline for completion. The format of cooperation (hourly or fixed rate) and the number of hours.

It is necessary to create a "Questionnaire" Module, which will include questionnaires, questions, and answer options for the questions (the logic for question output and answer processing will be done as a separate project). 1. List and CRUD for "Surveys". The list should include "Survey Title", and "Edit/Delete" icons. When clicking on Edit, a form should open with: "Title" - input, required field, "Description" - textarea of the questionnaire (not required), and a "Save" button. Below, questions related to this questionnaire should be displayed in read mode. When clicking on "Delete", a confirm should appear "Do you really want to delete the Questionnaire?", if "yes" is clicked - the Questionnaire and all questions included in it should be deleted. Implement multilingual support with tabs, languages: Ukrainian, English, and Russian (in the future - German and Spanish). Above the list, there should be a button "Add Questionnaire", when clicked, the above-described logic will be implemented, only with empty fields. 2. List and CRUD for "Questions". The list should include: Question Title, and "Edit/Delete" icons. When clicking on Edit, there should be: "Question" - input field, required, "Question Description" - textarea, and dynamic blocks for adding answer options, this block should be called "Answer Options". Each answer option should contain "Option Name" - input (required field), "Quest 1" - dropdown list with 24 Quests (required field), and a short input "Score" with the ability to specify a positive number (required field), + another "Quest 2" - dropdown list with 24 Quests (not required field), and a short input "Score" (not required field) with the ability to specify a positive number, and a delete icon, when clicked, should have a confirm "Do you really want to delete the answer option?", if yes - only the current answer option should be deleted. A save button that saves the form. Implement multilingual support with tabs, languages: Ukrainian, English, and Russian (in the future - German and Spanish). Above the list, there should be a button "Add Question", when clicked, the above-described logic will be implemented, only with empty fields. 24 Quests is a static list with the Quest name and the corresponding number, NOT auto-incremented, but manually assigned. I will provide the entire list in personal messages. It is better to include this list in a separate table in the database, so it can be expanded when necessary. CRUD for this list is NOT needed. Design/layout - must correspond to the design and layout of the admin panel itself. The module code must use the CMS's own API, write your own code only when there is no ready API for it. Ideally, I expect an estimate in hours to understand the cost of 1 hour of work. I prefer to work in the logic of timerates.