How to integrate payment gateway in opencart jobs

...of my site is "". I am the owner of this domain. I want students to enter this site and register. Then they write their educational indicators, certificates and majors they are interested in. Accordingly, my system will recommend universities to them. Simple members of site can apply to 2 universities . If they are paid members, then they can apply to 7 universities. We still can't get api or ready files from universities. Therefore, all university and program information will be manually entered into the system by us. When students apply, they should feel like the system is automatically applying for them. The message that "your application has been registered" should be automatically sent to their personal e-mail. Late...

I need a web application built to facilitate the delivery and collection of ice cream. Here's a brief of what I'm looking for: -plan for delivery depends upon the customer orders - Map Integration: The application needs to integrate maps for tracking deliveries. -collection money with denomination entry and expenses entry for driver and salesman The workflow should be inclined towards invoiced and delivery system.

We are working under an expedited deadline (less than 1 month) to integrate machine learning with our unit commitment problem (UCP), specifically focusing on renewable energy sources (RES) - solar and wind energy. Key responsibilities: - Implement neural networks in the machine learning algorithm. - Expertly merge UCP with RES (both solar and wind energy). - Expert in unit commitment problems Ideal candidate: - Proven experience in machine learning - Familiarity with neural networks - Strong understanding of renewable energy systems - particularly solar and wind - Ability to meet tight deadlines Your expertise in neural networks and renewable energy is pivotal to the success of this project. Let's make the world more susta...

More details: Is this project for business or personal use? For an existing business What information should successful freelancers include in their application? Past work How soon do you need your project completed? ASAP

I'm looking for an experienced IoT developer who can create an Arduino-based system that triggers actions or alerts based o...on scraped text data from a website. Key Responsibilities: - Develop a system using Arduino, Raspberry Pi, and ESP32 microcontroller - Implement website scraping functionality to extract specific text content - Design a mechanism to trigger predefined actions or alerts based on the scraped data Ideal Experience: - Proficient in Arduino programming - Familiarity with ESP32 microcontroller and Raspberry Pi - Experience with website scraping techniques - Ability to integrate scraped data to trigger actions or alerts on an IoT system Please note that my preferred programming language wasn't specified. Feel free ...

I need a Python script to be deployed as a Lambda function and capable of processing tokens and handling verification and info retrieval tasks successfully. The Lambda function will handle both Google Sign-in ID and Access tokens. Summary: "Users creation" will be in DDB. "Endpoint creation" using API gateway. "User Authentication" using JWT "User Login" is via Google Sign-in

I'm looking for a talented logo designer to create an illustrative logo for my website. Key Requirements: - I need an illustrative logo, not just a text-based one. - The logo will primarily be used on my website so it should be appealing and suitable for web use. - I have specific colors in mind for the logo, which should be incorporated. Ideal Skills and Experience: - Proven track record of creating illustrative logos. - Understanding of color psychology and logo design for the web. - Ability to take color scheme preferences into account and integrate them seamlessly into the design. - Experience with logo design for websites would be a plus.

...website that will allow users to book astrology consultations. Users should be able to provide their name and contact information, as well as specify their date and time preferences and birth details (date, time, and place) when booking an appointment. Key Features: - Booking System: The website should have a robust appointment booking system that allows users to schedule astrology consultations. - User Information Collection: The site should collect the user's name and contact details, as well as their date and time preferences and full birth details. - Payment Gateway: The website should have an integrated payment gateway to facilitate secure payments for the consultations. Ideal Skills and Experience: - Experience in...

I'm seeking an expert Python developer to integrate the Sales, Inventory, and Accounting modules of Odoo with WooCommerce. This is an advanced task that requires deep knowledge of Python programming language and a strong understanding of Odoo and WooCommerce platforms. KEY TASKS: - Develop a robust API connection between Odoo and WooCommerce. - Ensure seamless data exchange between the Sales, Inventory, and Accounting modules. REQUIRED SKILLS/EXPERIENCE: - Expert-level Python programming skills. - Extensive experience with Odoo and WooCommerce integration. - Experience with API development and integration. This project is not for beginners or intermediate level programmers. I need someone with a high degree of skill and proven proficiency in Python, Odoo, and...

...solid background in healthcare-related projects to create an intuitive medical record solution for my mental healthcare facility. Key features the software must include: - **Patient Information Management**: The software must store and display detailed patient information effectively. Your understanding of data handling and structuring will be important for this feature. - **Medical History Tracking**: The software must provide an efficient way to maintain and access a patient’s past medical records. Experience in designing such systems is desired. - **Lab Test Results Tracking and Clinical Notes**: The system needs to integrate functionality for tracking lab test results and clinical notes within each patient profile. For example, ...

...seeking out a simplistic method of inspecting the layouts to comprehend the basic structure without needing to delve into the more complex features such as component-border inspection or adjustable display parameters. This tool should develop an app solely compatible with Android smartphones. The functionality needs to integrate seamlessly into existing project work within the Android Studio environment. Ideal Skills: - Strong knowledge of Android Studio - Experience with creating tools that inspect layouts - Prior experience developing apps for Android smartphones If you are an expert on layout inspection in Android Studio and have prior experience in developing apps for Android smartphones, your expertise will be greatly appreciated in...

I'm seeking a specialist in DV360 programmatic advertising and pixel tracking. Key Responsibilities: - Rumning programmatic digital campaigns through DV360 Setting up new pixel tracking for conversion tracking. - Ensuring tracking is properly integrated with our Google Ads campaigns. Ideal Skills: - Proficiency in Google Ads and DV360. - Extensive experience with setting up pixel tracking for conversion tracking. - Strong understanding of how to integrate tracking with DV360. This is a critical project for us. We're looking for someone who can hit the ground running, make sure our tracking is set up correctly, and help us optimize our campaigns.

I need an experienced FlutterFlow developer(flutterflow is no code platform) to integrate private and group chat functionality into my existing Flutter-flow project. Functionality to incorporate: - Ability to chat privately and in groups - Text messaging Ideal Skills & Experience: - Proven experience with Flutter-flow platform - knowledge about developing chat functionality and database schema Please include examples of similar work done in your bid.

I'm in need of an expert in trading view pine script programming who's capable of merging two indicators in one. Your task will be: - Merge the Two indicators into a single script on the Trading View platform. - Incorporate Fibonacci (Fib) levels in the script, but specifics were not indicated. We can discuss that further. 1. **Combine Indicator Logic**: - Integrate the logic from both indicators into a single script. - Ensure that the functionality to track highs, lows, and Fibonacci levels is preserved. - Maintain separate sections for calculating highs and lows, as well as for drawing Fibonacci lines. 2. **Adjust Inputs Interface**: - Rearrange the input section to display inputs horizontally for better organizat...

Description: We are seeking an experienced web developer to create a dropshipping website that integrates with BigBuy, among other dropshipping platforms. The site must be functional, visually appealing, and designed to maximize sales conversions. Website Features and Requirements: Simple and Intuitive Interface: Clean design and intuitive navigation for an excellent user experience. Dropshipping Supplier Integration: Ability to easily integrate with BigBuy and other popular dropshipping platforms such as AliExpress and Oberlo. Payment System: Support for multiple payment methods including credit cards, PayPal, and local payment methods. SEO Friendly: Optimized for search engines to ensure good online visibility. Mobile Friendly: Fu...

...who can help me integrate an API from PubMed into my website. The aim is to retrieve and display specific data from PubMed on my Joomla site. Your tasks will include: - Setting up the API integration for fetching the data from PubMed - Displaying the retrieved information in a custom module/widget on my Joomla site The specific details you need to consider are: - I'm interested in retrieving and displaying the 'Title' and 'Abstract' of the publications from PubMed - The displayed data should be organized neatly within a custom module or widget on my Joomla site Ideal skills and experience for the job: - Proficiency in Joomla development, with a strong understanding of API integration - Prior experience working with da...

I am looking for a Twilio expert to assist with the implementation of Voice Activity Detection (VAD) in a Twilio Call and integrate with TTS, STT, and LLM - except VAD, everything is already in place, just need someone to complete VAD and make documentation Looking for local developer with little AI knowledge. Can hire full time if work is good.

I'm looking to build a dynamic, modern Shopify website for my dropshipping business. This website primarily needs to cater to children and their parents, making it interactive and engaging is key. this would be my ideal site , can you copy sections etc and we get our own ali express drop shipped items Please check reference and let me know if you can do simialr in shopify and adding items from ali express . Key requirements: - The website will majorly feature toys, hence category system should be optimized for it. - The design preference is modern. The website should reflect a clean, intuitive and user-friendly interface that appeals to children and parents. - It should have all the essential features of a dropshipping business

I'm in need of an experienced Flutter developer to integrate APIs into my app. Please only reply experts who knows solution.

I'm looking to set up a SaaS website with the Blocksy theme on WordPress. The key focus here is to ensure the website can function effectively as a CRM tool. Key Features: - I need the website to be fully functional as a SaaS application with CRM capabilities. - The CRM functionalities are essential to the core of this project and must include lead and contact management, sales pipeline tracking, and email marketing integration. - The Blocksy theme should be used to customize the website and its header and footer to ensure a unique, professional, and user-friendly design. - Please note, the core of this project is the CRM functionality, the website should integrate seamlessly with these features. Ideal skills and expertise: - Word...

I'm looking for an expert who can seamlessly integrate Bask(CRM and Sales platform to) Klaviyo Flow via webhooks. Your task will involve creating an integration that can automate email campaigns, collect customer data in real time, and track customer engagement effectively. The primary platforms for the project include Bask(only for webhook functionality) and Klaviyo(primary platform). The triggers for the Klaviyo flow API integration include: - Placing an order - Abandoned cart The ideal candidate should have prior experience with Klaviyo. They should also have a deep understanding of API integrations and webhooks, and be able to implement practical and efficient solutions to complex problems.

I'm in immediate need of a freelancer who can craft a custom utility bill. The mock-up document should appear to be a legitimate electricity bill. Key Requirements: - Mimic an electricity bill - Integrate name and address details - Detail usage figures (these can be made up) - The final product must look authentic - Turnaround: As soon as possible. This is a high-priority project, so speed without compromising the quality is crucial. For prospective freelancers, familiarity with the standard layout and features of an electricity bill is necessary. A background in graphic design, experience in creating similar documents, and a strong eye for detail will be advantageous. This project requires accuracy and at most attention to detail, as the c...

... Key Requirements: - Custom Design: Create and integrate unique design elements that align with my brand and vision. - Third-Party Services Integration: Implement social media sharing and email marketing platforms. - Advanced Functionality: Develop additional functionalities to enhance user experience. The ideal freelancer for this project should have: - Extensive experience in WordPress website development and customization. - Expertise in integrating third-party services like social media sharing and email marketing platforms. - Ability to work efficiently and deliver high-quality work within a tight deadline. Your creativity and ability to blend design with functionality will be crucial in bringing this project to life. I&...

...for a freelancer to help me create a NodeRed Dashboard that displays energy consumption data. Specifics: - The dashboard should be able to visualize various metrics related to energy consumption. - I already have an existing data source that will provide the necessary information for the dashboard. - I am open to different types of visualizations and would like the dashboard to display the data in a visually appealing manner. Ideal Skills and Experience: - Experience with NodeRed and dashboard creation. - NodeRed Multi user dashboard with login and based on the user seeding different UI's. - Could be done in any NodeRed support way standard Dashboard, UI-Builder od others. - Proficiency in data visualization and designing ...

I'm looking for an experienced web developer to build an e-commerce site that sells multiple types of services, primarily tutoring and home repair services. This platform should have strong user-friendly features and a seamless interface for smooth navigation. Key Requirements: - E-commerce platform design and build - Implement a booking/scheduling system for the services - Integrated payment system Ideal Skills: - Proficiency in web development - Previous experience in creating e-commerce platforms - Knowledge in building booking/scheduling systems - Experience with payment gateway integration By understanding the complexity and spectrum of this project, you should be able to deliver a website that results in ...

Seeking someone who can flawlessly integrate my emails from M365 Outlook to SharePoint automatically. Detailed aspects of the job include: - Establish an integration system that primarily functions automatically. Consequently, all incoming and outgoing emails get stored in SharePoint without the need for manual intervention. - Flexibility in the type of emails to integrate is a must. They may range from all emails to emails with specific features or from certain senders, all dependent on the necessitated requirements. -apply labels to certain emails and send out specific SharePoint library -Should use M365 component and not any third party tools Ideal candidate would have: - Extensive experience in M365 Outlook to S...

I need a proficient web developer to create a simplistic but functional and aesthetically pleasing informational website for me. The main goal is for it to provide information about my offline tutorial classes to the potential clients effectively. Key requirements: - Simplistic informational website design and development - User friendly and easy to navigate - Integration of a booking system for offline tutorial classes - Must be responsive and mobile-friendly - SEO optimization Although a payment system is not a must-have right now, I would prefer a developer who has the ability to integrate one in the future. Ideal skills: - Experience in web design and development - Proficiency in writing clean and efficient code ...

We are looking to create a website similar to [Syniva](), serving as a showcase for various marketplaces. The concept is simple: users visit our site, select their desired marketplace and product, then complete the purchase on our platform. Key Features: - Seamless Integration: Our site seamlessly integrates with major marketplaces like Amazon. - Automated Purchases: Once a user selects a product, our site automatically processes the purchase. - Dynamic Pricing: The site detects the user's country, calculates delivery costs, and adds a commission. - Dropshipping Model: We do not import products; instead, we display them directly from the marketplace page using iframe HTML tags. We prefer to build the site using WooCommerce or WordPress for flexibility and ease ...

...document uploads and execute automatic filing based on the attached metadata. Key Specifications: - Compatibility: The web part should integrate seamlessly with my existing SharePoint document management system. - Versatility: The web part should support a broad range of document types, including Word docs, PDFs, PowerPoints, images, and videos. - Smart Filing: The web part must utilize attached metadata for automatic filing of documents. Relevant fields include Document Type, Department, and Document Format. Ideal Skills and Experience: - SharePoint Framework (SPFx) development. - Prior experience in designing/developing document management tools. - Proficiency in managing and categorizing diverse data types. - Strong understanding of SharePoint's metadata...

I'm looking for a professional who can integrate AI-generated content into my ecommerce app, which serves both product listings and service descriptions. The AI should be able to generate accurate and compelling product descriptions, engaging service descriptions, and persuasive customer reviews. Key Tasks: - Implementing AI for Product Descriptions: Your main task will be to work with AI technology to generate unique and catchy product descriptions that will attract customers and boost sales. - Service Description Generation: In addition to product listings, the AI should be able to create engaging service descriptions for the variety of services we offer. - Customer Review Generation: The AI system should also be able to gener...

I'm looking to create a 3D visual of a brick fireplace with gas insert with built-ins on either side and molding/trim work above. I have dimensions and examples, just need to see the 3D visual. The ideal freelancer for this project should have: - Proven experience in designing traditional interiors - Expertise in creating 3D models with brick fireplaces and trim work/built ins - Strong eye for detail and aesthetic design - Ability to design and integrate built-in shelves or cabinets in the overall design. -Be able to do the project quickly

As the manager of this project, I'm in need of an experienced PHP developer who is skilled in both front-end and back-end development to join our team. Responsibilities will include: - Front-end and back-end development - Efficient integrations with e-commerce platforms Below are the ideal skills and experience I'm looking for: - Proficiency in PHP - Proven experience with HTML/CSS and JavaScript - Ability to integrate with e-commerce platforms is a must Applicants with prior experience on e-commerce projects will have an advantage. If you are result-driven, have an eye for detail, and are adept in PHP and the aforementioned languages, don't hesitate to bid on this project.

I need a small web app that will integrate two API's to get information from a database, then display the address on the screen for the user to confirm. Once confirmed, the user will submit the request to get a unique link that expire's once it is used once. They can then have an option to copy, or share the link on their socials. Whoever picks up the link it takes them to a page where they can enter how much they will sponsor with, and then proceed to checkout and a payment API takes over. Once the payment is successful, a token is generated and displayed on screen of the sponsor, and the requestor receives an SMS or email with the token. Sponsors and requestors can have access to their history, and a ...

...skilled web developer to create an e-commerce platform for my business. The ideal candidate should be proficient in front and back-end development, as well as payment gateway integration. Key Requirements: - E-commerce Platform: The primary function of the website will be to sell products online. Therefore, the developer should have prior experience in creating user-friendly e-commerce websites. - Payment Integration: The website needs to have a 'deposit' button that supports Credit/Debit Cards, PayPal, and Cryptocurrency. It is crucial that the developer has experience in integrating multiple payment gateways. - Design: The website should have an elegant and professional design. Therefore, I'm lookin...

I'm looking for a freelancer experienced in Laravel to help me integrate a payment gateway into my site. The script that must be installed is this: The site where the script must be installed is Key Requirements: - Expertise in Laravel: The freelancer must be able to navigate the Laravel framework with ease to integrate the payment script. - Custom Payment Gateway Integration Experience: The selected payment gateway isn't the usual PayPal, Stripe, or Authorize.Net. Therefore, the freelancer needs to demonstrate past experience with integrating custom payment gateways.

I'm in need of a skilled developer to build a comprehensive e-commerce fashion site with accounting services, inspired by the likes of H&M but tailored to the Indian market. The website should have the following features: - Sales Management - Purchase Management - Inventory Management Payment integration is key for this project. I want the site to support the following payment options: - Credit card - PayPal - Cash on delivery A crucial requirement is ensuring the accounting services are on par with The accounting features should be fully integrated into the site and be seamless to use. In terms of the product range, the site is planned to have more than 20 product categories. The ideal freelancer for this pro...

### Description: I am seeking a skilled software developer to integrate Arabic language support into our existing font generation system developed in C#. Currently, our system supports multiple languages but lacks comprehensive support for Arabic. ### Requirements: 1. Strong proficiency in C# and .NET Framework. 2. Experience with processing and analyzing texts in various Unicode encodings. 3. Ability to effectively implement and integrate UTF-8 encoding into the existing system. 4. Previous experience with font systems, particularly in Windows environments. 5. Ability to use diagnostics and debugging tools to identify and resolve issues. ### Objectives: - **System Update**: Enable the system to generate fonts t...

...We're looking for someone to help up integrate an online wholesale diamond catalogue with our premium Shopify theme The wholesale website: It's API documention: Our website: You'll see that our site is just a reflection of the Stuller catalogue, this is because it's using IFrames WHAT WE WANT: -For our site to look and feel like or something similar -To have access to the Stuller catalogue with Shopify's functionality -A shopping cart -A custommer service chat box -For the site to update it's inventory based on Stuller SOME THINGS TO NOTE: -Shopify has a payment integration system -We'll be based in Canada and the States for the only currency to worry about for now is U

...developer to integrate Bluetooth Low Energy (BLE) scanning and WiFi configurations into a cross-platform mobile application. Requirements: - Cross-platform compatibility: The application should operate seamlessly on both Android and iOS. - BLE Functionality: The app should be able to scan for and connect to BLE devices, prioritizing a specific custom BLE device. - WiFi Configurations: The developer should also build functionalities that will enable the app to connect and configure WiFi. Ideal Skills and Experiences: - An expert level of knowledge and practical experience with the Flutter framework is critical for this role. - A deep understanding of utilizing BLE technologies, particularly with custom BLE devices. - Proven experience in...

I operate a job board website and receive around 50,000 job postings monthly from Jobg8. I need a custom plugin to effectively integrate these job postings onto my website and subsequently feed them to Google for Jobs. Key Requirements: - Develop a custom plugin that facilitates the regular feed of job postings from Jobg8 to my website - Design the plugin to allow for automatic selection of job postings based on specific criteria - Ensure seamless integration of the selected job postings onto my website - Implement a mechanism to feed the selected postings to Google for Jobs Ideal Skills and Experience: - Excellent proficiency in plugin development and integration - Prior experience working with Jobg8 or similar job feed providers -...

...an experienced Full Stack Developer who will be able to develop a web application that involves payment processing, coupled with database integration. The application will be tasked with creating bills for medical purposes. Key Responsibilities: * Implementation Functionality like cash register, Doku , and Patient Information * Understand problem of precision rounding in Javascript * Integrate a reliable payment processing system. * Create doku and medical bills in a secure, efficient, and user-friendly manner. Technical Skills Required: * Proficiency in PHP, JavaScript, HTML/CSS, JQuery, and Bootstrap. * Experience in payment processing and database integrations. Ideal freelancer should demonstrate previous, relevant ex...

...professional development to improve my current Jasmine SMS Gateway system. The main tasks that I need assistance with include: - Integrating the SMS API: This is a critical piece of my project. Knowledge and experience with SMS API integration is necessary. - Designing and developing the user interface: A background in UI/UX would be very beneficial in creating an effective and efficient interface. The specific functionalities I require include: - Customizable message templates: This will allow for variation in content and personalization for different audiences. - A contact management system: An organized and user-friendly approach to managing contacts is key in this project. - An incoming SMS setup from SMPP client: This is crucial f...

...expert to help me increase the conversion rate of sales for my digital products, such as e-books and courses. The ideal candidate must have experience in optimizing funnels specifically for digital products. Key Responsibilities: - Boosting the sales conversion rate of my digital products - Implementing a seamless and efficient checkout process - Enhancing the overall user experience within the funnel - Ensuring integration with specific tools including an email marketing platform and a payment gateway Skills and Experience Required: - Proven experience as a Clickfunnel expert with a focus on digital products - Strong understanding of e-commerce and online sales psychology - Proficiency in implementing effective email marketing strategies within a fu...

DONT USE AI FOR DESIGN!! I am in need of a logo for my business, HollyBloom, that is indicative of our focus on alternative practices. The logo should capture a sense of unity and growth. While I desire an elegant, possibly minimalist, aesthetic, I don't want it to be overly simplistic or lose its meaning. It should mirror the refinement of our brand. Features to highlight: - Use pastel colors like light orange, mint green, or soft yellow, etc... - Incorporate plant elements, abstract shapes, and celestial elements where possible, but AVOID making it look like a flower shop or yoga center logo - The logo needs a modern and clean style. Skills and experience: - Proficient in creating vector graphics - Strong understanding of modern design principles - E...

I'm in need of a skilled web3 developer who can spearhead the creation of a frontend UI for my decentralized exchange (DEX). The DEX is a fork of PancakeSwap and has several key features: - Swap Function: The ability for users to swap tokens. - Add Liquidity Function: The possibility for users to add liquidity to the exchange. - Staking Pool Interface: A user-friendly interface for our 2 staking pools. Design preferences for this project lean towards a modern and minimalist aesthetic. The front end should also integrate a Wallet Connection feature, to ensure a smooth user experience. I'm looking for a professional who is well-versed in web3 technologies, particularly in developing DEX front ends. Experience in c...

We are looking for a talented packaging designer to create 20 - 30+ templates of our coffee packaging mock-up to be used in a product designer app. These designs will be used as starting points for potential customers to design their coffee product packaging. This is to give people interesting creative ideas to start from when using our tool. Use inspiration from the coffee industry in designing these templates and be creative! Designers will start from our baseline template to ensure that end designs will work well with our system. Designers must design in our design studio and download their designs from the app ... Project Specifications: + All designs must include the following information on the packaging: ------- 12oz...

I'm in need of an expert React developer to create a sophisticated water recitational website for managing my farm. The site will play a pivotal role in automating and optimizing the water usage in my agricultural operations. Key features should include: - **Dashboard Monitoring System**: This should provide real-time data glimpses of water levels, irrigation schedules, and weather information, effectively aiding in data-driven decision making. - **Automatic Irrigation System Control**: To ensure judicious water utilization, the site should feature sensor-based irrigation control. This entails automatic adjustment of irrigation schedules based on water levels detected by sensors. - **Weather Forecast Integration**: Integrate th...

...confident and experienced Shopify developer who can seamlessly integrate 3rd party API, with the sole aim of syncing products from a vendor to our store daily. The specific skills/experience required for this project include: - Profound knowledge of Shopify’s API integration - Coding proficiency - Understanding the inner working of 3rd party API's - Completion and successful implementation of similar projects I will provide Vendor API details to selected freelancers only, we'll be integrating more vendor APIs after this first vendor. If you read all details, respond with word vendor on top of your bid so I know you read it carefully. The sync should occur everyday, allowing to make some modifications to product details before they ar...

I need a CodeIgniter developer to help me integrate a static YouTube video popup on the home page of my website. The purpose is to promote brand awareness through the video. Key Requirements: - The video should automatically pop up when the page is loaded. - The video should play without any user controls available, only an autoplay feature. Ideal Skills and Experience: - Strong understanding of CodeIgniter framework - Experience with integrating YouTube videos on websites - Knowledge of JavaScript and CSS for designing the video popup - Ability to implement an autoplay feature without user controls This is a straightforward project that should not take much time for an experienced developer in this field. Please provide examples of similar projects y...

I need AWS Lambda function that handles Google signin JWT token and creates a new user in DynamoDB. For Endpoint creation - API Gateway For User auth - Google signin JWT token