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I’m looking for a strong full-stack developer to build a web-based tariff/import duty simulator similar in feel and functionality to Flexport’s tariff calculator [login to view URL] The tool should allow users to input shipment details (country, transport mode, declared value, etc.) and receive a clear breakdown of estimated duties/tariffs/fees in a clean, interactive UI. Key Features (MVP) Interactive Calculator UI Clean, modern interface (desktop + mobile responsive) Form inputs: origin country, destination country, entry date, shipment value, transport mode, and other relevant fields Real-time updates of results as inputs change Results displayed in a clear breakdown (line items + totals) Backend Calculation Engine API endpoint(s) to process inputs and return results Business logic designed so tariff rules can be updated over time Validation for inputs and safe handling of missing/invalid values Data Source Integration (Discuss Options) Prefer integration with a reliable tariff/duty data source or API If real data is not available within budget, propose a realistic approach (limited dataset, manual upload, admin panel, etc.) Caching to reduce repeated calls and improve performance Deployment Deploy to Vercel/Render/AWS (open to recommendations) Provide clear documentation for setup and future maintenance Tech Preferences (open to alternatives if justified) Frontend: React or [login to view URL] Backend: Node.js (Express/Nest) or Python (FastAPI) Database: Postgres preferred Optional: Docker Deliverables Working web app (MVP) Source code in a Git repo Documentation: setup, deployment, and how to update tariff logic/data Basic tests (at least core calculation paths) Milestones UI prototype + flow (Figma or in-code) Core calculator UI + basic backend endpoints Data integration + calculation logic Final polish + deployment + documentation
Projektin tunnus (ID): 40161056
310 ehdotukset
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Aktiivinen 23 päivää sitten
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310 freelancerit tarjoavat keskimäärin $1 100 USD tätä projektia

⭕⭕FULL STACK DEVELOPER⭕⭕ Hi there, ✔️I see you are looking to build a web-based tariff/import duty simulator similar to Flexport, and I’d love to partner with you to create a fast, interactive, and accurate tool. Key tasks include :- ✦ Interactive calculator UI ✦ Real-time tariff/duty breakdown ✦ Backend API with updateable calculation rules ✦ Integration with tariff data source or admin dataset upload ✦ Mobile-responsive design & clean UX ✍️ Do you have a preferred tariff data source/API, or should I suggest a lightweight dataset for MVP? ✍️ Should users be able to export or save calculation results? ♾️ To communicate in-depth, feel free to reach out to me. ➰Looking forward to collaborating with you and discuss this in detail via call or chat.! Thank you.
$1 125 USD 12 päivässä
10,0
10,0

I have reviewed the project requirements for the Web-Based Tariff/Import Duty Simulator. My skills in PHP, JavaScript, HTML5, HTML, and Node.js make me a great match for this project. I am confident in my ability to deliver a high-quality, responsive simulator within your budget. Once we discuss the full scope, we can adjust the budget accordingly. Please check my 15-year-old profile for past work. Your satisfaction is my priority, and I am eager to start working on this project. Let's discuss the details and get started. Looking forward to hearing from you.
$1 050 USD 21 päivässä
8,8
8,8

I have read details. I understand that you require the following: 1) a modern interactive calculator, that has some inputs and generates results in a breakdown fashion. 2) you need to incorporate business logic. It will require input validations, some API stuff for calculations, and perform some logical operations based upon discussion. 3) You need to deploy to a preferred hosting space. 4) The task needs to be done using Node.JS or Python. I will be happy to discuss this in detail if possible. Regards.
$900 USD 30 päivässä
8,9
8,9

Hello, We understand that you are seeking a full-stack developer to create a web-based tariff/import duty simulator that provides users with real-time duty estimates based on various shipment details. Our team at A2 Design is well-equipped to deliver a clean and interactive UI, coupled with a robust backend capable of processing inputs efficiently. We have successfully developed scalable applications like MadPaws, a marketplace integrating complex booking systems, and TutorTime, an online tutoring platform that features dynamic user interactions. Both projects showcase our ability to create responsive applications with real-time updates and user-friendly interfaces. Let’s discuss how we can bring your vision to life. Reach out to explore the next steps!
$1 000 USD 10 päivässä
8,8
8,8

Hi Jose Benito D. I’m your web developer, ready to turn your project Web-Based Tariff/Import Duty Simulator into reality! I’d love to discuss the details and create something amazing together. Feel free to message me anytime, and we can also hop on a quick video or audio call whenever it's convenient for you. I’ve developed many projects exactly like what you’re looking for. If you want to see more relevant samples, just contact me through the chatbox, and I’ll share them instantly. ★ Why Clients Trust Me 500+ successful web projects delivered 430+ positive client reviews Expert in PHP, JavaScript, HTML5, HTML, Node.js, PostgreSQL, Web Development, Full Stack Development WordPress, Shopify, PHP, JavaScript, HTML, CSS, Plugin/Theme Development, Laravel, WebApp Clean, modern, responsive and SEO-optimized designs Fast delivery, great communication, and long-term support Available during EST hours for smooth collaboration If you want a professional developer who delivers quality work on time and stress-free, let’s connect. I’m excited to help build something amazing for you. Best regards, Kausar Parveen
$999 USD 10 päivässä
8,4
8,4

Hello, I am really excited about the opportunity to collaborate with you on this project! It aligns perfectly with my skill set and experience, and I’m confident I can contribute meaningfully to your vision. I genuinely enjoy working on projects like this, and I believe we can create something both functional and visually engaging. Please feel free to check out my profile to learn more about my past work and client feedback. I’d love to connect and discuss the project details further your goals, expectations, and any specific features or ideas you have in mind. The more I understand your vision, the better I can bring it to life. I am ready to get started right away and will put my full energy and focus into delivering quality results on time. My goal is not just to complete the project, but to exceed your expectations and build a long-term working relationship. Looking forward to hearing from you soon! With regards! Nikhil
$1 500 USD 7 päivässä
8,1
8,1

Hi Jose, I propose to develop a web-based tariff/import duty simulator akin to Flexport's calculator. The tool will feature an interactive UI for users to input shipment details and receive a breakdown of estimated duties/tariffs/fees. Key features include a modern UI, real-time result updates, backend calculation engine with API endpoints, and integration with a reliable data source. Let's discuss further. Regards, Sai Bhaskar
$950 USD 20 päivässä
7,8
7,8

Hi there, We’ve built similar tools that calculate shipping costs based on multiple parameters, including product dimensions, weight, and delivery location. We also integrated with major shipping APIs like FedEx and DHL, allowing users to get real-time rates and book shipments directly. For your project, we can create a dedicated backend service that handles all calculations and integrates with external APIs. This way, you can easily add new shipping providers and manage them independently from the frontend. We can also enhance the product with features like user accounts, saved shipments, and automated email notifications. Let’s schedule a 10-minute call to discuss your project in more detail and see if I’m the right fit for your needs. I’m looking forward to hearing more about your exciting project. Best, Adil
$1 156,58 USD 21 päivässä
7,3
7,3

Hi Jose Benito D., ➡️ I read your project description, you need a web-based tariff/import duty simulator with functionalities similar to Flexport’s calculator. The tool should offer an interactive UI, real-time updates, and be responsive across devices, with robust backend logic to handle dynamic tariff rules and data integration. ⏺️ With over 12 years as a Full Stack Developer, I specialize in building comprehensive web applications that merge intuitive design with powerful backend functionalities. My expertise in React and Node.js, along with a strong grasp of database management (Postgres), makes me the ideal candidate for crafting your tariff simulator. I will ensure the tool is user-friendly, performs efficiently, and is scalable. My approach includes API development for real-time data processing, integration with reliable data sources for tariffs, and deploying on modern infrastructure like AWS to ensure optimal performance and security. Regards, Aftab Ahmad Full Stack Developer (12 Years of experience)
$750 USD 7 päivässä
7,4
7,4

Hi there! I'm excited about your project to develop a web-based tariff/import duty simulator similar to Flexport’s calculator. With my 12+ years of experience in Full-Stack Development, I am confident in creating an interactive UI with real-time duty calculations. The tool will feature a clean, modern design, responsive across all devices, and provide users with accurate tariff breakdowns. Utilizing advanced technologies like React, Node.js, and Postgres, I will develop a robust backend calculation engine with API endpoints for secure data processing. By integrating a reliable tariff data source, I'll ensure up-to-date calculations and provide options for handling missing/invalid inputs efficiently. For deployment, I recommend leveraging Vercel for seamless hosting and delivering clear setup documentation to ensure easy maintenance. Let's discuss the data source integration further to determine the most effective solution within your budget. What are your preferred milestones for this project? Best regards,
$1 275 USD 51 päivässä
7,0
7,0

Hello, I am excited to offer Smart Sols' expertise for your web-based tariff/import duty simulator project. With over 9 years of experience in full-stack development, our team excels in building reliable and user-friendly web applications. We specialize in backend development using Laravel and Native PHP, and frontend technologies such as Vue.js and React.js, ensuring a seamless and interactive user experience. Understanding the importance of accuracy and responsiveness for a tariff simulator, we will deliver a robust solution tailored to your specific requirements. In addition, our UI/UX designers will create intuitive interfaces to simplify complex calculations for end-users. We are confident in delivering a high-quality product on time and within budget. Looking forward to collaborating with you on this project. Thank you for considering Smart Sols.
$1 500 USD 20 päivässä
6,9
6,9

Hello, I am a Node.js Developer with 15+ years of experience in building scalable, secure, and high-performance backend systems. I specialize in RESTful APIs, real-time applications, server-side development, and database integration (MySQL, MongoDB, etc.). I focus on writing clean, optimized, and maintainable code to ensure speed and reliability. Recently, I also worked on OpenAI API integration for auto-generated articles, images, and social sharing, which highlights my ability to adopt the latest technologies into modern applications. If you are looking for a dedicated Node.js expert who ensures quality, innovation, and timely delivery, I’d be happy to work on your project.
$750 USD 7 päivässä
6,6
6,6

Drawing on my extensive experience of over 8 years in full-stack development, I propose myself as the perfect candidate for your tariff/import duty simulator project. My skills and expertise in HTML, JavaScript, Node.js, and PostgreSQL align perfectly with your desired tech stack for both front-end and back-end development. I am highly proficient in creating clean, modern interfaces with a keen attention to responsive design that adapts seamlessly across different platforms, be it desktop or mobile. Having worked on numerous web and app projects in the past, I understand the importance of deliverables that not only function flawlessly but are also user-friendly. I will not only ensure a real-time interactive calculator UI mirroring your reference but also guarantee a sturdy backend calculation engine designed to handle tariff rule updates, input validations and safe handling of missing/invalid values. Furthermore, my deep knowledge and expertise in deploying applications on various cloud platforms such as AWS should streamline our deployment process. Through Vercel/Render/AWS (or any platform you prefer), I will ensure that the final product is not just functionally sound but also comes with comprehensive documentation for easy setup and future maintenance. Opting me for this project means choosing a partner who will place your satisfaction as the utmost priority throughout every stage of development, from prototype to documentation - let's get started!
$900 USD 7 päivässä
6,7
6,7

Hi! My name is Marjan and I'm here to offer you my services as a skilled applicant with over a decade of experience working on Freelancer.com. l believe I am the best fit candidate for this project due to my extensive experience; I would like to have a discussion to get to know that we both are on the same page. Once the scope will be locked, I will start working on it right away.
$750 USD 7 päivässä
6,8
6,8

Hello, I’ve gone through your project details and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working with technologies like React, Node.js, and PostgreSQL. My focus is on creating clean, interactive interfaces and robust backend systems that ensure a smooth user experience, making your tariff/import duty simulator both effective and user-friendly. I will first review your specifications, suggest the best technical approach, and then move forward with the development while keeping you updated at every stage. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I’m interested in your project and would love to understand more details to ensure the best approach. Could you clarify: What specific tariff or duty data sources are you considering for integration? Let’s discuss over chat!
$1 250 USD 21 päivässä
7,2
7,2

As a seasoned full-stack developer and the leader of a talented team, my group and I have accumulated over a decade of experience in web development and platform creation. I've noticed how useful a high-quality tariff/import duty simulator could be for your business, and I assure you, we're the right fit for this project. Our past ventures involve using JavaScript and PHP to create interactive, user-friendly interfaces like the one you're envisioning. Notable is our ability to work under pressure without compromising quality—giving you superior value for your investment. We'd deploy on cloud platforms such as AWS orRender, documenting every detail for setup and future maintenance. Plus, keeping up with changing rules won't be an issue; we plan code structures that make updating tariffs seamless. With us, you're guaranteed not just a fully-functional web app but also exhaustive documentation, neat source code in a Git repo, basic automated testing scripts, and most importantly, timely delivery of all milestones(user_defined_caition_required). Trust us to transform your vision into reality!
$750 USD 7 päivässä
6,4
6,4

Hello Jose, I am Vishal Maharaj, a seasoned full-stack developer with 20 years of expertise in PHP, JavaScript, HTML5, PostgreSQL, and Node.js. I have carefully reviewed your project requirements for a web-based tariff/import duty simulator similar to Flexport's tool. To achieve this, I propose to create a clean and interactive UI with form inputs for shipment details, real-time result updates, and a backend calculation engine with flexible tariff rules. Integration with a reliable tariff data source, deployment on Vercel/Render/AWS, and thorough documentation for setup and maintenance are key components of my solution. I am eager to discuss this project further and explore how we can bring your vision to life. Please initiate a chat at your convenience. Cheers, Vishal Maharaj
$1 000 USD 10 päivässä
6,3
6,3

Hello Greetings, After reviewing your project description, I am confident and excited to work on this project for you. However, I have some crucial points and questions to clarify. Please leave a message in the chat to discuss this, and I can share my recent work that is similar to your requirements. Thanks for your time! I am excited to hear from you soon. Best regards,
$1 125 USD 7 päivässä
6,1
6,1

Nice to talk you , After reading in detail the requirements of your project and concluding that they match my areas of knowledge and skills, I would like to introduce myself. My name is Anthony Muñoz and I am the lead engineer for DS Pro IT agency. I have worked for over 10 years in Backend and software development and have successfully done multiple jobs. It will be a pleasure to work together to make your project a reality. Please feel free to contact me. I´m looking forward to working with you. I really appreciate your time and remain attentive to any request or question. Greetings
$2 110 USD 7 päivässä
5,9
5,9

My name is Devi Prasad, an experienced full-stack developer with a strong background in HTML, JavaScript, and PHP. I believe my 15+ years of experience in the technical world has prepared me diligently for your project. Your web-based tariff/import duty simulator aligns well with what I do best; design clear, interactive UIs and build powerful backend calculation engines just like Flexport's well-known tariff calculator. I appreciate that your project requires a modern, responsive interface and real-time updates of results as inputs change. These are areas where I have demonstrated my proficiency countless times. Moreover, your desire to integrate the tool with reliable tariff data sources resonates with my ethos of delivering accurate and dependable solutions to complex problems. In wrapping up your project, I understand the importance of not only providing quality work but also offering continued support and clear documentation for setup and future maintenance. My goal is to ensure your full satisfaction. So why not trust my vast expertise and let me handle your project? From UI prototype to final deployment, you can be sure that there will be no compromise on quality, communication or timeliness. Let's make this happen together!
$750 USD 7 päivässä
5,4
5,4

McAllen, United States
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Liittynyt syysk. 5, 2011
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