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Yesterday my application stopped receiving any data from our REST API. The endpoint had been returning clean JSON for months; now every call just hangs with no response—no status code, no error message, nothing. Here’s what I can share so far: • Endpoint URL, request headers, and sample payload that used to work. • Recent server-side change log (very small—only a config tweak). • Access to the codebase (Node.js + Express) and Postman collection for quick testing. What I need you to do: 1. Reproduce the “silent” failure locally or via Postman. 2. Trace whether the issue originates client-side, server-side, or at the network layer (firewall, SSL, CORS, etc.). 3. Implement a clean fix so the REST API reliably returns the expected JSON again. 4. Provide a concise summary of the root cause and the code/config changes applied. If you’ve debugged stalled REST endpoints before and can jump in right away, I’d love your help.
Projektin tunnus (ID): 40359150
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Aktiivinen 5 päivää sitten
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I debug Node.js/Express APIs regularly, this sounds like a config change broke a middleware or route handler. Happy to jump in right away. Give me the Postman collection and codebase access and I'll trace it, find the root cause, fix it, and write up what went wrong. Should be quick.
$25 USD 1 päivässä
4,2
4,2
102 freelancerit tarjoavat keskimäärin $27 USD tätä projektia

Hello, As a member of one of the largest web service provider companies in Pakistan, I have ample experience working with RESTful APIs and debugging issues just like the one you're experiencing. Not only am I well-versed in Node.js and Express, but I'm also comfortable using tools like Postman to identify problems within the API. In regards to your project, my main aim would be to systematically identify whether the issue lies client-side, server-side, or within the network itself. Once identified, I'll effectively apply a solution that not only fixes the immediate problem but also ensures a reliable and consistent return of expected JSON for your API. And to ensure transparency and understanding, I'll provide a detailed summary of the root cause and all code/config changes applied. As for post-service, it's crucial to me that my clients are well-equipped and confident in maintaining their systems moving forward. With this depth of understanding comes excellent customer service; whatever questions or concerns you may have throughout this process, I'll be available to address them promptly and thoroughly. Let me bring my experience and determined work ethic to solve this problem for you! Thanks!
$30 USD 1 päivässä
8,6
8,6

Drawing on my extensive experience in API development, JavaScript, and REST APIs, I can confidently say that troubleshooting issues like the one you're facing is one of my strong suits. I'm adept at working with Node.js and Express, your chosen stack, which will enable me to quickly identify whether the issue stems from the client-side, server-side, or a network-related problem. In regards to your requirement for a clean fix and concise documentation, my codebase mastery and attention to detail are invaluable. I take great pleasure in crafting precise solutions to tricky challenges like these. Not only will I identify and rectify the issue hampering your API's response but I'll also provide a comprehensive summary of the root cause so we can circumvent similar roadblocks in the future. While my primary expertise lies in WordPress/WooCommerce, Magento, and Shopify development alongside integrating with various third-party APIs and platforms, this project builds upon my existing skill set perfectly. I will leverage not only my programming proficiency but also my deep curiosity to trace elusive problems to their source for a reliable solution. Let's work together to get your API up and running smoothly again!
$30 USD 1 päivässä
8,1
8,1

Hi there, Asad here, I sense the quiet storm behind your REST endpoint going silent, and I’m confident we’ll bring the JSON back reliably. I’ve helped teams fix Node.js/Express APIs that stall due to subtle config drifts, timeouts, or network blocks. I’ll reproduce the issue in your environment, instrument traces, verify client, server, and network layers, then implement a clean fix and provide a concise root-cause summary and changes. My plan: 1) Reproduce with Postman using your exact URL, headers, and sample payload to observe the silent hang and capture timing data. 2) Trace through client, server, and network paths (including SSL, CORS, firewall, and API gateway if present) to identify where the stall originates. 3) Review recent config tweak and Express middleware/error handling, ensuring responses are always sent with proper status and JSON body. 4) Implement a robust fix, add defensive timeouts/logs, and validate against your Postman collection. 5) Deliver a concise root-cause report with the exact code/config changes and test results. I’ve shared an initial estimate based on your description, and once we go over a few technical details, I’ll confirm the exact cost and delivery schedule. I’ll coordinate with you to validate the fix across environments and present a clear, actionable plan. From your Postman tests, what is the observed behavior when you hit the endpoint with and without SSL, and do you see any intermediate 0-byte responses in the proxy or gateway that
$30 USD 3 päivässä
8,2
8,2

Hi sir, I can quickly debug API issue and check via postman with endpoint and payload you provide to check if issue from client side or from api side and what is the issue. I can fix that issue and can start work on it now only. Lets quickly chat and get it fixed. Thanks & Regards, Bhavika.
$30 USD 1 päivässä
8,1
8,1

We can assist with diagnosing and fixing your REST API data retrieval issue. We understand that your endpoint has stopped returning responses, and we can help trace the problem from client-side to server-side or network layer. Our approach involves reproducing the silent failure, debugging the Node.js/Express codebase, and implementing a solution for reliable JSON responses. Experience: We have 18+ years of experience in backend development. We are familiar with Node.js and Express and can assist with API integration and debugging network-related issues.
$30 USD 1 päivässä
7,8
7,8

Hello I am Software developer and I have extensive experience with various areas, including working with REST APIs. it's not so easy to count how many REST API projects I completed already. About your issue - at first, needed to investigate, could you share more details? What is exact API? Thanks
$19,50 USD 1 päivässä
7,1
7,1

Hi I can fix this issue now. Lets connect over chat and discuss. Will take payment only after successful completion of work. no upfront . thanks
$30 USD 1 päivässä
6,7
6,7

Hello I understand your application stopped receiving data yesterday due to a critical REST API response issue. I propose a rapid diagnosis and resolution to identify the root cause, fix the API, and restore your data flow promptly. My expertise ensures a swift resolution. Let's connect immediately to get your application fully functional. Giáp Văn Hưng
$32 USD 7 päivässä
6,8
6,8

With 8 years of comprehensive and diverse technical experience specifically in JavaScript, Linux, Node.js, and PHP, I'm confident that I can help you identify and fix the issue with your REST API. I'm well-versed in debugging stalled endpoints, tracing failures effectively, and implementing clean solutions for reliable functionalities.
$30 USD 1 päivässä
6,6
6,6

As a full stack development team with extensive experience in dealing with REST API issues, we possess the unique blend of skills required to solve your problem efficiently. We have hands-on proficiency in Node.js - the platform your application runs on, and PHP - the language you use for backend. With these robust languages, tackling any issues related to JSON response or endpoints would be second nature to us. In addition to our technical expertise, our problem-solving abilities are well-honed through years of working on complex projects. We believe that fixing an issue is not just about troubleshooting but also about providing a comprehensive explanation of its root cause and the subsequent changes applied. We therefore assure you that not only will we identify and fix the silent failure haunting your endpoint, but we would also present an organized account of everything done to ensure it does not happen again. Lastly, we value high-quality deliverables and timely communication above all else, which is evident from our previous clients' satisfaction. So let's get started; let's get your application back on track!
$20 USD 7 päivässä
6,3
6,3

As an experienced Node.js developer with a specialization in API development, I am well-equipped to tackle the complex task of fixing your REST API response issue. Having worked with numerous clients over the last 10 years, I've trained my troubleshooting skills to effectively identify and resolve problems, even in intricate systems like this. Furthermore, being skilled not just in API development but also in PHP and Linux will allow me to comprehensively analyze every aspect involved in providing an optimal long-lasting solution. Finally, my ability to quickly identify issues and provide effective resolutions stems from a passionate problem-solving attitude that has enabled me to maintain a TOP RATED status throughout my career so far. Let us make your application up and running at full throttle once again!
$49 USD 1 päivässä
6,3
6,3

Hi. As PHP Expert, I am very interested in your project. I am very familiar with REST API. I have web and mobile development skills with 8+ years. I wish to work for you. Thanks for attention.
$50 USD 1 päivässä
6,1
6,1

I am expert in fixing and debugging REST API. I can do the needful for you. Please give me postman access along with REST api endpoints, I can do the testing and make a note for you regarding the bug and fix
$30 USD 1 päivässä
6,2
6,2

Hi, I've dealt with exactly this kind of "silent hang" in Node.js + Express APIs before—it's almost always a middleware that stops the request pipeline without calling `next()` or sending a response, often triggered by a seemingly innocent config change. My approach: I'll first reproduce the failure using your Postman collection, then instrument the Express middleware chain with targeted logging to pinpoint exactly where the request stalls. Given you mentioned a recent config tweak, I'll diff that change against the working state to isolate the culprit—whether it's a broken route handler, a misconfigured proxy/timeout, or a CORS/SSL issue at the network layer. I can start immediately and will deliver a clean fix along with a clear root-cause summary so this doesn't happen again.
$10 USD 1 päivässä
6,0
6,0

Hello, I can help diagnose and restore your REST API response issue quickly. I have strong experience debugging Node.js + Express APIs, especially silent request failures where calls hang without status or errors. ✅ My approach • Reproduce the issue locally and via Postman • Inspect request lifecycle (routing → middleware → controller → response) • Check recent config changes affecting server behavior • Verify CORS, SSL, proxy, firewall, and network layers • Identify blocking async operations or unreturned promises ✅ Debugging focus areas • Middleware not calling next() • Unhandled async/await or pending database queries • Reverse proxy or Nginx timeout issues • CORS or HTTPS misconfiguration • Event loop blocking or memory leaks ✅ Deliverables • Fully working endpoint returning correct JSON • Clean and minimal fix (no unnecessary refactor) • Root-cause explanation in simple terms • Summary of files/configurations updated I work efficiently with existing codebases and staging environments. Can start immediately once access and Postman collection are shared. Estimated resolution time: a few hours depending on complexity. Looking forward to helping you get your API stable again. Best regards.
$20 USD 7 päivässä
5,9
5,9

With over 5 years of experience in API development, JavaScript, Node.js, and PHP, I'm confident that I can tackle and resolve the REST API response issue you're facing for your application. I'm well-versed in tracing bugs that manifest as inexplicable and seemingly "silent" failures with no status codes, error messages or responses. From my understanding of your problem, I strongly suspect the root cause could be related to a recent server-side config tweak. As a seasoned API troubleshooter, I won't just solve the issue at hand but also provide a concise but comprehensive summary of what went wrong and the code changes made to rectify it. In my illustrious career, I have successfully debugged scores of REST endpoints for both clients and employers. My approach is based on meticulous tracking and analysis that operates on all three layers: client-side, server-side, and network. This allows me to efficiently identify where the problem originates from: whether it's an issue with firewall settings, SSL encryption, CORS compatibility or any other factor affecting data exchange. As an added bonus to your team, my extensive work with Node.js + Express (just like your codebase) means zero ramp-up time for me on this project. You need someone who can handle your task seamlessly and deliver stable results quickly? Look no further! Let us discuss how I can help you get your REST API up and running reliably again!
$50 USD 7 päivässä
5,5
5,5

Hi, A “silent” API hang (no response, no status) usually points to issues like blocked event loop, unresolved async calls, middleware hanging, or network/config problems (CORS, firewall, SSL). I can jump in and debug this quickly: Step 1 – Reproduce • Test via Postman + logs • Confirm if request reaches the server Step 2 – Trace • Check middleware chain (Express handlers, async/await issues) • Inspect server logs + error handling • Verify network layer (CORS, proxy, SSL, firewall) Step 3 – Fix • Resolve blocking or hanging process • Ensure proper response handling (timeouts, error returns) • Validate consistent JSON output Step 4 – Validation • Test across endpoints • Provide root cause + clean fix summary You’ll get: • Working API returning responses reliably • Clear explanation of what broke and why • Preventive suggestions to avoid recurrence I’ve worked on backend systems and API debugging where identifying silent failures quickly is critical. A couple of quick questions: Is the API behind any proxy (NGINX, Cloudflare)? Any recent changes in middleware or auth layer? I can start immediately and resolve this fast. Best regards, Davinder
$30 USD 7 päivässä
5,6
5,6

Your API shouldn’t just stop responding without a trace, I’ll find exactly where it’s breaking and restore it fast. Silent failures like this are usually traceable, and I know how to isolate them quickly. I have solid experience debugging stalled REST APIs in Node.js and Express environments, including issues caused by middleware, misconfigured headers, hanging promises, CORS/SSL conflicts, or network-level blocks. I’ll start by reproducing the issue via Postman, then trace the full request lifecycle to pinpoint where the response is getting stuck. Once identified, I’ll implement a clean and reliable fix, whether it’s in the server logic, configuration, or infrastructure. I’ll also ensure proper error handling is in place so this kind of silent failure doesn’t happen again. You’ll get a clear summary of the root cause along with the exact changes made, so everything is transparent and maintainable. I’m ready to jump in immediately and get your API responding normally again.
$20 USD 7 päivässä
5,8
5,8

Hi there, I have over 10 years work experience with Linux and Server Management as well as doing backend development and API debugging. Ping me and I'll help you out! Cheers
$30 USD 1 päivässä
6,0
6,0

Hello, I’ve gone through your job description and understand that you’re looking for someone to debug and fix a REST API that suddenly stops responding, with no status code or error. With 5+ years of experience in Node.js, Express, and REST API troubleshooting, I’ve successfully resolved similar “silent” endpoint failures. What I can help you with: • Reproduce the issue locally or via Postman to understand the failure • Trace whether the problem is client-side, server-side, or network-related (firewall, SSL, CORS, etc.) • Implement a reliable fix so the API returns JSON as expected • Provide a concise summary of the root cause and changes applied Warm regards, Monica Bhatia
$20 USD 3 päivässä
5,0
5,0

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