ONDC API Backend Integration

@Web1devloper

As someone well-versed in backend technologies, particularly Node.js, backed by blockchain and API integration experience, I am confident that I can provide the necessary expertise to successfully integrate your commerce platform with the ONDC network. My 8-year journey has honed my adaptability and problem-solving skills in various environments - from an IT firm to running my own freelancing venture today. As for your mandatory requirement of proven ONDC project experience, I'm proud to say I have already implemented live ONDC projects in a similar capacity. This gives me an edge, as I'm already familiar with registry discovery, gateway interaction, and strict ONDC-compliant request/response signing. I understand the need to work only with official ONDC documentation and would leverage this resource wisely. In terms of your tech-stack, I am proficient in not only Node.js but also Java,PHP and Python which are skills required for this project. With my ability to work independently & deliver clean documented code along with your provision of limited internal flow notes,& call traces will facilitate the seamless integration of your commerce platform to the ONDC network. Ultimately, a successful project completion, passing ONDC conformance tests (catalogue, order, payment) will be achieved through our collaboration. Let's create a seamless experience for your users by entrusting this project to me.

@anshumanvermaUK

Hi I can integrate your commerce platform with the ONDC network end-to-end, covering registry discovery, gateway flows, and fully compliant request/response signing. I’ll follow official ONDC documentation strictly and implement catalogue, order, and payment flows to pass conformance tests. The integration will be clean, documented, and ready for live credentials. Thanks Anshuman

@ixorawebmob

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 backend development and a strong focus on API integrations. My hands-on experience with ONDC implementations aligns perfectly with your requirements, ensuring that I can navigate the intricacies of registry discovery, gateway interactions, and ONDC-compliant signing seamlessly. I prioritize clean, well-documented code while working independently to deliver projects on time. I look forward to executing the end-to-end ONDC API integration, including passing conformance tests to meet your goals efficiently. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I would love to understand more about your specific requirements. Could you clarify: 1. Do you have any existing code or workflows that we should consider during integration? Do you have any existing code or workflows that we should consider during integration? Let’s discuss over chat! Regards, Arpit Jaiswal

@AZTURK1

Hi there, I’ve thoroughly reviewed your need for a backend developer to integrate your commerce platform with the ONDC network. I am confident in delivering a secure, compliant, and seamless integration leveraging my strong backend expertise and prior experience with live ONDC implementations. - Implement end-to-end ONDC API integration, including registry discovery and gateway interaction. - Execute request/response signing with correct key rotation to meet ONDC security standards. - Ensure passing all ONDC conformance tests for catalogue, order, and payment flows. - Deliver clean, well-documented code following official ONDC documentation. **Skills:** ✅ ONDC API backend integration with Node.js, Java, PHP, and Python ✅ Request/response signing and key management per ONDC specs ✅ RESTful API development and secure gateway flow implementation ✅ Delivering documented, maintainable code independently ✅ Experience with commercial platform backend systems and compliance testing **Certificates:** ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 Ready to start immediately and ensure a smooth, compliant ONDC integration for your platform. What is the current backend technology stack of your commerce platform? Best regards,

@NEHABHAT92

As an experienced backend developer, not only am I familiar with ONDC but also specialize in Node.js and PHP- two of the key languages required for this job. I've spent nearly a decade in the web and mobile development industry and know what it takes to efficiently integrate complex API systems like ONDC. Not just promise, I deliver well-tested code that adheres to industry standards. I have hands-on experience in E-commerce and CMS based website which aligns well with the requirements of this project. My proven ability to work independently ensures that your organization's time is utilized optimally while seeing faster results. Moreover, I believe in building long-lasting relationships, therefore my service doesn't end at the delivery stage. I offer a free 3-month support for existing development because your satisfaction matters most to me. You can rest assured that I'm committed to turning your ideas into reality and will be delighted to serve you with all my expertise in node.js, PHP, and software development. Let's discuss how we can bring seamless integration of ONDC to your commerce platform!

@KarthikTechCon

Hi, I’m Karthik, a senior backend architect with 10+ years of experience building API-driven commerce and network integrations, including hands-on work with live ONDC implementations. I’m comfortable working strictly from official ONDC documentation and aligning to its compliance and security requirements. I can handle the end-to-end ONDC backend integration for your existing commerce platform with a focus on correctness, security, and conformance. What I’ll deliver: • Registry discovery & gateway flow implementation • Buyer/Seller side ONDC API integration as required • Strict request/response signing (key generation, rotation, verification) • Catalogue, order, and payment flow alignment • Successful completion of ONDC conformance tests • Clean, modular backend code with clear documentation My approach: • Follow ONDC specs precisely—no assumptions or shortcuts • Implement robust signing, timestamps, and replay protection • Structured logging and traceability for audits & debugging • Independent execution with minimal supervision Tech stack: • Strong experience with Node.js / Python / Java (happy to align with your stack) • Secure key management and API orchestration I’ve worked on live ONDC projects, understand the ecosystem challenges, and focus on delivering compliant, production-ready integrations, not experiments. Happy to discuss your current platform, role (buyer/seller), and timeline. – Karthik

@JaibhanSinghGaur

Hi, I’m an experienced backend developer with live ONDC API integration experience. I can handle end-to-end ONDC integration including registry discovery, gateway flows, request/response signing with key rotation, and ensuring all OND C conformance tests (catalogue, order, payment) pass strictly as per official ONDC documentation. I work independently, follow specs closely, and deliver clean, well-documented code. Ready to start immediately.

@hr157

Hello, I’m a backend developer with hands-on experience integrating live ONDC buyer/seller applications, working strictly with official ONDC documentation and specs. I’ve implemented end-to-end ONDC flows including registry discovery, gateway interactions, and fully compliant request/response signing, and I understand the nuances that go beyond sample code—timeouts, retries, header correctness, and conformance edge cases. I’ve successfully delivered ONDC integrations that passed catalogue, order, and payment conformance tests, including: Registry lookup and dynamic subscriber discovery Gateway search/select/init/confirm flows ONDC-compliant cryptographic signing & verification Key management and rotation without downtime Debugging signature mismatches and payload hash issues On the backend side, I’m comfortable working independently in Node.js and Python (also familiar with Java/PHP stacks), writing clean, well-documented, production-ready code. I’m used to working from limited internal traces, reproducing issues locally, and aligning implementations precisely with ONDC protocol versions. I don’t rely on assumptions or third-party interpretations—only official ONDC specs and validation rules—and I focus on correctness, auditability, and long-term maintainability. Looking forward to discussing the implementation details.

@bridgestonetech1

Hi, we’re a backend development team with hands-on experience integrating live ONDC implementations. We can connect your existing commerce platform end-to-end with ONDC, handling registry discovery, gateway flows, request/response signing (with key rotation), and ensuring your system passes catalogue, order, and payment conformance tests. We work strictly from official ONDC documentation and deliver clean, fully documented code. Let’s connect to discuss timeline and credentials setup.

@rishi9343

Having amassed more than 8 years of solid experience in the software development industry, I am uniquely positioned to excel at your ONDC API integration project. While my Freelancer.com profile may be new, I have achieved great results throughout my career with over 80 successful projects under my belt. Additionally, I have consistently utilized a variety of backend technologies including Node.js, PHP, Java and Python - precisely what you're looking for in a qualified applicant. In your project description, you highlight the need for prior hands-on experience with live ONDC implementations, and this is where I truly shine. I have engaged with diverse commerce platforms and have confidently integrated them with various networks, ensuring seamless registry discovery, gateway interaction and strictly compliant request/response signing. What further sets me apart is my ability to work independently without compromising on quality. My attention to detail ensures that even the most complex aspects of an API integration are executed flawlessly. My ultimate goal is to transform your project vision into a successful reality by passing ONDC's conformance tests and providing fully clean documented code. Trust me to deliver excellency in every aspect of your ONDC API Backend Integration Project.

@abhayk49

Hello, I’m a Java backend developer with strong experience in API integrations, secure request handling, and compliance-driven backend systems. I understand ONDC’s strict requirements around registry discovery, gateway flows, request/response signing, and conformance validation, and I’m comfortable working strictly with official ONDC documentation. I can help with: End-to-end ONDC API integration Registry & gateway flow implementation Secure request/response signing and key handling Support for ONDC conformance tests (catalogue, order, payment) I work independently, write clean and well-documented code, and am comfortable building integrations with limited internal notes and call traces. Happy to discuss your existing platform and ONDC setup. Best regards, Abhay Kumar

@abdf2010

Hi there, I'm writing regarding your ONDC API Backend Integration project. I clearly understand the need for a developer experienced in registry discovery, gateway interaction, and the crucial ONDC-compliant request/response signing, especially with prior hands-on experience in live implementations. I've worked extensively with official ONDC documentation, handling aspects like key rotation and ensuring full compliance, so I'm very familiar with these requirements. I'm comfortable with the technologies you've listed, including PHP and Node.js, and have a strong background in RESTful API development. To get started, perhaps we could schedule a brief chat to discuss your existing commerce platform's specific architecture and how we can best approach this integration. Let me know if that sounds good to you.

@rajmalviyamalviy

Hello, I am very interested in your project and have hands-on experience integrating commerce platforms with the ONDC network, including registry discovery, gateway interaction, and compliant request/response signing. I have successfully delivered live ONDC implementations and am comfortable working strictly with official ONDC documentation. Skills & Approach: Backend: Node.js / Java / PHP / Python (choose preferred stack) End-to-end ONDC API integration (catalogue, order, payment) Secure request/response signing with key rotation Passing all ONDC conformance tests Clean, maintainable, and fully documented code Independent development with clear communication and updates I can work with your internal flow notes, call traces, and provided credentials to deliver a fully ONDC-compliant integration. I’d be happy to discuss timelines, deliverables, and next steps. Best regards, Raj m

@abbas021

Hi, I always focus on understanding the full scope of a project before getting started, ensuring that every detail aligns with your goals and expectations. We are an expert team which have many years of experience on PHP, Java, Node.js, Software Development, RESTful, Backend Development, API Integration Please come over chat and discuss your requirement in a detailed way. Thank You

@Ankurhardia34

Hello, I’m Ankur, a freelance developer with a dedicated team of professionals. I read all your requirements for website and I assure you that I will provide high-quality work at the proper time. Additionally, we also provide you 3 months of support from our side. As a Full Stack Developer, I specialize in Web and App Development, boasting a portfolio of stunning projects with top-notch UI/UX design. My expertise spans Flutter (for both Android and iOS), PHP, and WordPress, and I bring over 7 years of experience to the table. Whether it’s websites, applications, or e-commerce platforms, I’ve got you covered. But I’m not limited to just coding. My skill set extends to graphic design and logo creation, offering you a one-stop solution for all your project needs. With a track record of over 500 completed projects, I am committed to delivering nothing short of excellence. My ultimate goal is your complete satisfaction. Thank you for considering me for your project. I’m ready to transform your vision into a reality that stands out in today’s competitive landscape. Best Regards, Ankur Hardiya

@krisnaprtm32

Hi, I'm Khoirudin Krisna Pratama. I am a backend-focused developer with a strong command of Node.js and PHP, and I am ready to handle your ONDC API integration. My Approach to this Integration: Compliant Security: I will implement strict request/response signing and manage key rotation as per ONDC official documentation. Registry & Gateway Flow: I will ensure seamless registry discovery and gateway interaction for a smooth commerce flow. Conformance Testing: I will guide the platform through all ONDC conformance tests for the catalogue, ordering, and payment modules. Documented Code: I prioritize clean, modular, and well-documented code to ensure long-term maintainability of the integration. I am comfortable working independently with official documentation to deliver a production-ready ONDC implementation. Let's discuss your current platform architecture!

@sumanj555

Hello, I’m ready to start immediately and can handle this project efficiently with full dedication. I’d be happy to discuss your project details and get started right away. Best regards, Suman Joshi

@sangeetha83m

As a result-oriented software engineer with profound experience in backend development and API integration, I strongly believe that I'm the best fit for your ONDC project. My skills span multiple languages including Python (Django, Django REST Framework), JavaScript (Node.js), Ruby on Rails, PHP as well as databases such as PostgreSQL, MySQL and SQLite to mention a few. On top of this, I have delivered secure, scalable systems including clean REST APIs and have had successful experiences integrating third-party APIs. I have a strong background in working independently, delivering clean code and producing adequate documentation that allow for easier handovers. In terms of backend projects, I've handled everything from building admin panels to multi-user portals and Role-based access control systems. Such experiences will be valuable in effectively implementing registry discovery, gateway interaction and ONDC compliant request/response signing. Having explored your project thoroughly, it is evident that the skills I bring will be foundational to the success of your project. The ability to not only build seamless robust products but also offer reliable post-launch support is something I pride myself on. Choose me for this project and you'll be choosing someone who has walked the path before you and fully understands what is at stake.

@TechSrini

I have developed several applications in my 25 + years of experience. I can develop application quickly, bug free with best architecture around and with complete end to end documentation and test cases (in case if any future developer comes for an enhancement). cost for end-to-end implementation includes helping you deploy it on your system(if it has all necessary software) for an hour