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I need a reliable, fully-automated bridge that sits between my supplier’s REST API and my online store’s REST API. The aim is to remove every manual touchpoint, so products, prices, stock levels and digital-key orders flow on their own. Here is the workflow I want to see running end-to-end: • Product side The bridge pulls the full product catalogue from the supplier, stores it locally, then pushes mapped items, prices and inventory to my store. Mapping must be preserved so future updates keep everything aligned. • Order side When a customer places an order, the bridge catches it instantly, calls the supplier API to purchase the corresponding digital key, retrieves the key and posts it straight back through the store API so the customer receives it without delay. Technical notes – Both APIs are REST. – A small, fast database (SQL or NoSQL is fine) should sit in the middle for caching, mapping and deduplication. – On any failed call the bridge should automatically retry with exponential back-off; I’ll review other alerting/logging options later, but solid retry logic is essential from day one. – Idempotency is critical so duplicate orders never slip through. – Clean code, clear config files and concise README are expected so I can re-deploy or hand it to another dev easily. Deliverables 1. Source code and deployment script (Docker preferred). 2. Database schema or migration file. 3. Postman or cURL collection that demonstrates each endpoint in both directions. 4. A brief test report showing successful product sync and a complete order-to-delivery cycle with retries simulated. If you have experience building similar two-way API syncs for e-commerce or gaming key stores, this should be straightforward and quick to prove. I’m ready to start as soon as you can outline your proposed stack and timeline.
Project ID: 40651492
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136 freelancers are bidding on average $142 USD for this job

Hi, The real risk is not the API calls. It is keeping two systems in sync without duplicates. I would use one sync ledger between both APIs. • Keep supplier ID ↔ store ID mappings in one table. • Give every order a unique idempotency key. • Track each sync with a clear status. • Retry failed calls without repeating successful ones. • Stop loops when both systems update each other. • Keep failed items in a small retry queue. • Log the full product and order trail for easy debugging. This makes the bridge safe even when an API times out or the same order is received more than once. I would use Laravel/PHP, MySQL and Docker for a simple setup. The bridge can expose clear APIs and a Postman test collection. I have built API and data-processing systems for live use, including bulk API/CSV workflows for Hazlett. I can also document the setup so another developer can deploy and maintain it easily.
$30 USD in 7 days
9.4
9.4

Good Day! I have carefully analyzed your project and can build a reliable REST API bridge with Docker, a lightweight database, product/catalog mapping, real-time order processing, idempotency, and exponential-backoff retries. I’ll deliver clean, maintainable code, deployment scripts, migrations, API collections, and a concise test report covering complete product and order flows. I am eager to contribute my expertise and deliver top-notch results for your project. Let's discuss the project further in chat or let's have a quick call! Best regards, M Adeel.
$100 USD in 3 days
8.0
8.0

Hello, I can build this as a reliable Dockerized bridge with clean adapters for the supplier and store APIs, a small database for SKU mapping, caching, and deduplication, and strict idempotency so retries never create duplicate key orders. The workflow will cover paginated catalogue sync, price and stock updates, order webhooks or polling, supplier purchase, key retrieval, and delivery back to the store. I will add exponential back-off, structured logs, safe credential configuration, database migrations, deployment scripts, and integration tests that simulate failures and retries. Deliverables will include source code, Docker setup, schema, Postman or cURL examples, README, and an end-to-end test report. I can begin as soon as you share both API documents, authentication methods, rate limits, and sample payloads.
$80 USD in 7 days
8.3
8.3

With digital keys the expensive failure mode isn't a missed sync, it's buying the same key twice — so I'd design the order path around a persisted state machine: the store order ID becomes a unique key in the database with statuses (received → purchasing → purchased → delivered), and the supplier purchase call carries an idempotency key, so a retry after a timeout resolves the existing purchase rather than creating a second one. Build would be Node/TypeScript (or Python, your preference) with Postgres for mapping and dedup, a queue with exponential back-off and a dead-letter table for anything that exhausts retries, plus a scheduled catalogue sync that diffs supplier data against the stored mapping so only genuine price and stock changes get pushed. Everything containerised with docker-compose, migrations included, config in env files, a Postman collection covering both directions, and a README your next developer can follow. I can start immediately once I have the supplier and store API docs and sandbox credentials.
$30 USD in 1 day
7.8
7.8

❤️❤️❤️ Greetings ❤️❤️❤️ I have carefully reviewed your REST Supplier → Store API Bridge requirements. This is a strong match for my backend/API integration experience. I am Ozgur Ozbas, a Full-Stack Developer with 10+ years of experience in PHP, Laravel, Node.js, REST APIs, MySQL, third-party integrations and automated business workflows. I can build the bridge with: • Full supplier catalogue synchronization • Product/price/stock mapping • Persistent supplier ↔ store ID mapping • Automated order detection • Supplier digital-key purchase • Key retrieval and store-side delivery • Local database caching/deduplication • Exponential-backoff retries • Idempotent order processing • Failure/state tracking and logging • Docker-based deployment • Database migrations • Postman/cURL API collection • End-to-end synchronization tests • Clear configuration and README I would make the order pipeline state-driven and idempotent so a timeout or repeated webhook/API request cannot accidentally purchase or deliver the same digital key twice. For product synchronization, I will also preserve the mapping between supplier and store identifiers so subsequent price/stock updates modify the existing products rather than creating duplicates. Q1. Does the store API provide webhooks for new orders, or should the bridge poll the store API for pending orders? Q2. Are supplier/store API authentication credentials already available, and do both APIs provide sandbox/test environments?
$140 USD in 2 days
7.0
7.0

With my extensive experience in building automation systems and data-driven platforms, I am well-versed in API integrations, precisely the kind of work your project entails. I have a keen eye for performance optimization and database query optimization so you can be assured of a fast and efficient system throughout. My proficiency in backend development, particularly Python (Django), means I understand scalability and reliable architecture. In fact, ensuring systems are production-ready and easy to maintain are among my core principles when developing projects. For example, I've successfully built Docker-based deployments as part of CI/CD workflows which aligns perfectly with your requirements. In addition, my strong AWS knowledge would greatly complement any need for cloud deployment. Lastly, idempotency - one of the critical aspects in this project - is an area which I have not only worked on before but brought innovation to best practices in API retries. My commitment to clean communication, prompt execution and delivering reliable code will ensure your bridge does not only connect your store with the supplier's API but also work harmoniously without failures. Trusting me to develop this crucial bridge will efficiently align product information and manage orders without any manual intervention thereby saving you time and resources."
$112 USD in 7 days
6.9
6.9

With over 14 years of experience in the Software Industry, I've had the opportunity to build numerous large-scale, distributed systems and automate complex data pipelines -- skills that are exactly what your project requires. My thorough understanding of APIs and my expertise in building AWS-related solutions, including using API Gateway, S3, Lambda, EC2, among others, will ensure your REST Supplier-Store API Bridge is not only reliable and efficient but also capable of delivering effective data mapping and management. My extensive expertise in Python will be handy for building your solution since it's a well-known language for RESTful API integration and web scraping. In fact, I've successfully created multiple applications that involve high-volume and recurring data scraping for platforms similar to your supplier's API. As an added advantage, I'm well-versed with both SQL and NoSQL databases which are essential for not just caching but also mapping and deduplication - another crucial factor for your project.
$150 USD in 14 days
6.7
6.7

Hi there, I can create a fully-automated bridge between your supplier's REST API and your online store's REST API to ensure seamless data flow for products, prices, stock levels, and digital-key orders. I will implement robust retry logic and idempotency to prevent duplicate orders, ensuring high reliability in your operations. With my experience in PHP and API integration, along with a solid foundation in database design using both SQL and NoSQL, I can develop a solution that meets your specification for clean code and clear documentation. I’m ready to start on this project as soon as you approve the stack and timeline. Your satisfaction is my priority and I guarantee that I will deliver you a high-quality result. Regards, Ali
$140 USD in 1 day
6.4
6.4

With an extensive 8+ years of professional experience under my belt, I have successfully developed 200+ projects ranging from API developments to complex AI solutions. Tasked with providing clients with fully automated digital products like the one you described in your project's description, I expertly handle every aspect from mapping and syncing to ordering and delivery. Exponential back-off, idempotency, and fail-proof retries are all embedded in my coding DNA. My robust skills span across Java, PHP, and Software Architecture which means that I fully understand the details required to create a reliable bridge between REST APIs. My ability to work with small, fast databases like SQL or NoSQL for caching, mapping and deduplication aligns perfectly with your requirements. Additionally, my adeptness at using Docker for deployment coupled with my propensity for clear README documentation and detailed test reports ensure that your project can be easily redeployed or handed over smoothly. What sets me apart even further is my business-first approach to development. I don't just solve technical problems; I solve them through the lens of enhancing and growing digital businesses. If you want a solid partnership built on clean code, smart architecture and reliability then I am unequivocally the tech partner for you. Shall we make this happen?
$150 USD in 7 days
6.4
6.4

Hi, I can build this as a small Node.js or PHP service with a MySQL mapping layer between the supplier API and your store API. The bridge will handle catalogue sync, price/stock updates, preserved product mappings, order capture, supplier key purchase and delivery back to the store. I’ll also include idempotency checks, exponential retry handling, Docker deployment, migrations and a Postman/cURL collection so the full flow can be tested end to end. I’d start by mapping both API payloads and order states, then build the product sync and order-delivery flow separately before combining and testing them.
$240 USD in 7 days
6.4
6.4

Hi! I have extensive experience building e-commerce API integrations, product synchronization and automated order processing. I can build the bridge in PHP using REST APIs and MySQL, with product/price/stock synchronization, persistent mapping, order processing, automatic key delivery, retries with exponential backoff and idempotency protection against duplicate orders. I would package the solution with Docker and provide the database schema, configuration, README and API/Postman examples. Estimated turnaround is 4–6 days, depending on the API documentation and exact mapping requirements.
$350 USD in 4 days
6.4
6.4

Hello!! Your supplier-to-store REST bridge will fully automate catalogue, pricing, inventory, and digital-key order synchronization with reliable retries and duplicate-order protection. • Do both APIs already provide complete documentation and test credentials? • Which store platform is using the REST API? • Do you prefer MySQL or another database for the bridge? The solution will use a lightweight service with database mapping, product synchronization, instant order handling, key retrieval, automatic exponential back-off, idempotency controls, structured logging, and secure configuration. Docker deployment, migrations, API collections, testing, and a clear README will also be provided. Relevant REST API, eCommerce synchronization, database, Docker, and automation projects have been completed with a strong focus on reliability and clean architecture. Let us review the API documentation and finalize the stack and timeline in chat. Best regards Farhin B
$30 USD in 10 days
6.8
6.8

I can create a fully automated bridge between your supplier’s REST API and your online store’s API, ensuring smooth product and order flow. My first step will be to define the database schema for caching and mapping to ensure data integrity. Based in Toronto, Canada, I work efficiently and prioritize clear communication throughout the process. Let’s get started on this project.
$50 USD in 3 days
6.6
6.6

First thing I'd lock down is the order-side idempotency layer. The real risk in a bridge like this is a webhook firing twice and burning two digital keys off one order, or a call timing out mid-purchase and the customer getting nothing. Catalogue drift is the smaller problem by comparison. Every inbound order event needs a dedup key checked against the local DB before any purchase call goes out to the supplier, and every outbound purchase call needs a persisted idempotency token so a retry after a timeout re-attaches to the same in-flight attempt instead of firing a second one. Catalogue and stock sync run off the same DB as the mapping source of truth, but that half is mechanical once the schema is right. Backoff on the purchase call needs to be tuned to the supplier's actual rate limits and failure responses, which I can't see from the brief yet, and that's the piece most likely to move this number once I'm into their docs. M1: local DB schema, mapping tables, dedup and idempotency layer, $230, 2d. M2: order-side purchase-and-deliver flow with retry and backoff, $250, 2d. M3: bidirectional catalogue/price/stock sync plus reconciliation pass, $220, 2d. Send me the supplier and store API docs and I'll have a tighter number back tomorrow.
$700 USD in 6 days
5.9
5.9

Hello there. I hope you are donig well. I have successfully built similar two-way API integrations for e-commerce platforms, ensuring seamless data flow and automated processes. My expertise in RESTful APIs and database design allows me to create reliable connections that meet specific business needs. I understand the importance of a fully automated bridge between your supplier and store APIs. My approach will ensure that product catalogs, stock levels, and digital key orders synchronize flawlessly, minimizing manual intervention while maintaining data integrity through efficient mapping and caching. I will deliver high-quality source code alongside a Docker deployment script, a comprehensive database schema, and a Postman collection for endpoint testing. My focus is on clean code, solid retry logic, and a detailed README, ensuring your project is easy to manage and scalable for future needs. Please feel free to reach out to me. I look forward to working with you. Best regards, Billy Bryan
$118 USD in 5 days
5.6
5.6

The bottleneck is ensuring a fully automated, reliable bridge for syncing supplier and store APIs without manual intervention. The root cause is the need to maintain data integrity through a cached mapping layer that handles product data and orders idempotently. I will implement a lightweight SQL or NoSQL cache with robust retry logic incorporating exponential backoff for API calls. The bridge will map, store, sync products, prices, inventory, and handle digital key orders through consistent REST API calls wrapped in a Dockerized deployment with clear config and logging. This setup guarantees seamless end-to-end flows and retry verification via Postman tests before delivery What specific criteria do you want for the product and order data mapping rules to ensure alignment over time?.
$500 USD in 7 days
5.6
5.6

Hi, I can help you with this project. I have relevant experience with PHP and can handle the work from development to testing and delivery. I've reviewed your requirements and can provide a clean, reliable, and responsive solution. Let's discuss the details and get started. Best, Arslan Shahid
$30 USD in 7 days
5.8
5.8

Hello, I will build the REST bridge between your supplier API and store API, syncing products, prices, stock and digital-key orders automatically with a small database for mapping and deduplication. I will add exponential back-off retries and idempotency so no order slips through. I can start today. For the order side, I will catch each sale, purchase the key from the supplier, and post it back through the store API instantly. Questions: 1) Which store platform, WooCommerce, Shopify, or custom? 2) Can you share the supplier API docs? Looking forward to discussing further. Regards, Shayan.
$55 USD in 3 days
5.5
5.5

With my extensive experience in API development, MySQL, and PHP, I am confident that I can create the reliable, fully-automated bridge you need for your supplier-store API synchronization project. I have successfully built similar two-way API syncs for ecommerce platforms in the past and I understand the intricate workflow requirements necessary to streamline product updates, pricing, inventory, and digital-key orders between REST APIs. Furthermore, my proficiency in PHP and MySQL ensures that I can efficiently build a small yet powerful database to facilitate caching, mapping, deduplication and to maintain idempotency for your orders. My experience with exponential back-off logic will guarantee diligent retries on any failed calls. Lastly, as a long-term technology partner who emphasizes clarity, strategy, and execution at every stage of development, I assure you of a solution that's not only efficient in the present but also designed for lasting success. By choosing me for this project, you'll gain a partner focused on building technology that evolves with your business and solving real-world problems effectively.
$30 USD in 5 days
5.4
5.4

Hi, I am a backend and API integration developer with 8 years of rich experience in software development, with a background in e-commerce automation, REST APIs, databases, and reliable order workflows. I am familiar with Node.js/PHP, MySQL/PostgreSQL, REST APIs, Docker, webhooks, retries, idempotency, caching, and deployment automation. I understand you need a two-way bridge that keeps supplier products, prices, and stock synchronized with your store, then automatically purchases and returns digital keys when customer orders arrive. I can build the middle layer with persistent product mapping, deduplication, exponential retry logic, and idempotent order handling so duplicate purchases cannot occur. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Thanks. Emile.
$250 USD in 7 days
5.5
5.5

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