Backend / Full-Stack Engineer (API + Integrations) -- 2

@infowider11

✔️✔️✔️✔️✔️ Backend / Full-Stack Engineer (API + Integrations Expert) ✔️✔️✔️✔️✔️ Hello, How are you? I’ve reviewed your requirement and understand you need a reliable backend/full-stack engineer who can not only build APIs but also ensure seamless frontend integration, handle real-time workflows, and independently debug across the full system stack. I focus on delivering complete, working features—not partial implementations. I’m comfortable jumping into existing codebases, fixing broken integrations, and ensuring everything works smoothly end-to-end without constant supervision. Let’s Chat… Thanks

@gauravgargcs

Hello, I understand you need a backend-focused developer to build and maintain APIs, handle integrations, manage deployments, and ensure seamless frontend ↔ backend communication without partial work. I work with Node.js and REST APIs, handle deployments on AWS/Render/Netlify, manage environment variables securely, and ensure stable integrations using webhooks and external APIs with proper error handling. I have 10+ years of full-stack experience, specializing in backend systems, API architecture, and debugging complex integration issues. GitHub & API Work: I can share relevant repositories and live API examples in chat based on your project scope. How I connect backend to frontend: I design REST endpoints, secure them with tokens, structure JSON responses clearly, and integrate via fetch/axios on frontend with proper error/loading handling and environment-based configs. Debug approach: I check API status (Postman/logs), validate endpoints & headers, inspect network tab, verify CORS/env variables, and trace logs across server to isolate the break point. Let’s connect on chat so I can share my GitHub, API examples, and start contributing immediately. thank you Regards Gaurav Garg

@techplusintl

Hi, I can build and maintain backend APIs, ensuring they connect properly to the frontend. This will result in a seamless integration and efficient performance. I will develop the APIs using Node.js and ensure they are properly connected to the frontend. I will also handle integrations, manage environment variables, and debug any issues that arise across the system. Answer to your question Check the Network tab first to see if the API call succeeds and returns data; if yes, the issue is in frontend handling, if not, it’s backend or request-related. Please share your GitHub profile and examples of APIs you've built. Let's chat about the details! Thanks!

@diektech

Hi, This is Elias from Miami. I checked your project description and understand you’re looking for a backend/full-stack engineer to manage API integrations and backend services. It sounds like you need someone experienced to ensure everything runs smoothly and efficiently. I’ve worked on several similar platforms and understand the key technical challenges involved. My approach would involve analyzing your existing systems, defining user roles, and ensuring seamless API integrations while maintaining robust performance. I have a few questions to get a better understanding: Q1 – What specific APIs do you need to integrate, and are there existing systems I should be aware of? Q2 – Are there particular user roles or permissions we need to consider for your application? Q3 – What is your preferred backend technology stack, or are you open to suggestions? Looking forward to hearing from you.

@kamran2012

Hello there, I will build and maintain your backend APIs, wire them to the frontend, and handle external integrations — webhooks, third-party APIs, and deployment pipelines across Netlify and Render. One thing I will set up early: a shared error-handling middleware that standardizes every API response format and logs failures with enough context to debug frontend ↔ backend ↔ server issues without guesswork. This eliminates the cycle of "it works on my end" and keeps both layers speaking the same contract. Questions: 1) What is your current backend stack — Node/Express, Python/FastAPI, or something else? 2) Are the frontend and backend in the same GitHub repo or separate repos with independent deploy pipelines? Looking forward to your response. Best regards, Kamran

@extreamcode

Hello, I’ve read your Backend / Full-Stack Engineer brief with care. You need robust backend APIs, clean integration to the frontend, reliable webhooks and external API connectivity, and smooth deployments across GitHub, Netlify, and Render. I’ve built and maintained REST APIs, connected them to modern frontends, and debugged end-to-end issues across client, server, and integrations. With a strong background in PHP, Node.js, and JavaScript, I’ll design stable endpoints, clear environment-variable strategies, and resilient integration workflows that scale as you grow. My approach: define contracts for each API, implement consistent error handling, and keep frontend teams in sync with precise endpoints and data shapes. I’ll deliver complete features, not partials, and I’ll drive deployment automation and observability so you can ship confidently. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. I propose a focused 2-week window to implement core APIs, wiring, and deployment hooks, with iterative demos to ensure alignment. What are the primary data contracts and authentication requirements for the core APIs, and do you have any preferred vendor for deployment pipelines or specific environment-variable conventions you want followed? Best regards, Asad - I sense you’re aiming for flawless backend-to-frontend orchestration and painless, automated deployments.

@navneetsoni

Dear [Client Name], I'm writing to express my strong interest in the 'Backend / Full-Stack Engineer (API + Integrations) -- 2' project. I thoroughly understand your need for a developer skilled in building robust backend APIs, seamless frontend integration, and managing diverse integrations, without design work. My expertise with Node.js and REST APIs, coupled with comfort in GitHub, Netlify, Render, and AWS, aligns perfectly with your requirements. I excel at handling webhooks, external APIs, deployment workflows, and independent debugging across the entire stack to deliver complete, working features efficiently. Regarding your quick filter question, "How do you debug when the frontend isn’t receiving data from the API?": I start with browser network logs, then check server-side error logs, verify API endpoint paths/payloads, and ensure proper environment variables/network access. Direct API testing via Postman is also crucial. I'm confident in my ability to move fast, communicate clearly, and deliver the high-quality results you expect. I've attached my GitHub profile and API examples. I look forward to discussing how I can contribute to your project. Sincerely, Navneet

@ZohaibRoy

⭐⭐⭐⭐⭐ Build Reliable Backend APIs and Connect Them Seamlessly ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see you're looking for a Backend/Full-Stack Engineer. Look no further; Zohaib is here to help! My team has successfully completed 50+ similar projects for backend systems and API integrations. I will build and maintain your backend APIs, ensuring they connect perfectly with the frontend. ➡️ Why Me? I have 5 years of experience in backend development, focusing on Node.js and REST APIs. My skills include debugging, API integrations, and deployment management. I also have a strong grip on GitHub, AWS, and deployment workflows, ensuring smooth project execution. ➡️ Let's have a quick chat to discuss your project details. I can show you samples of my previous work and how I can meet your needs effectively. Looking forward to our chat! ➡️ Skills & Experience: ✅ Node.js ✅ REST APIs ✅ API Integrations ✅ Webhooks ✅ GitHub ✅ Netlify ✅ Render ✅ AWS ✅ Debugging ✅ Environment Variables ✅ Deployment Workflows ✅ Clear Communication Waiting for your response! Best Regards, Zohaib

@WebTechDesignBG

Woah Hello, It sounds like you need a skilled backend or full-stack engineer to build and maintain APIs while ensuring they're properly connected to the frontend. With 7+ years of experience in backend development, I specialize in Node.js and REST APIs, making me well-equipped to handle the integrations and debugging tasks you're looking for. My approach would be to establish robust backend APIs that seamlessly communicate with your frontend, ensuring all endpoints are connected correctly. I’m also comfortable managing deployments and working with various tools like GitHub and AWS, which I believe will streamline the workflow for your project. To address your filter question, when debugging issues with the frontend not receiving data from the API, I typically check the network requests in the browser, verify API responses, and inspect any relevant logs to trace the problem efficiently. Best regards, Ivan Mandinski

@Webtechfusion23

se: It’s a pleasure to have the opportunity to apply for your backend/full-stack engineer role, as I believe my wide-ranging experience makes me an ideal fit. With over 12 years of experience, I've extensively worked with the technologies and tools such as Node.js, REST APIs, GitHub, Netlify, Render, and AWS mentioned in your job description. My fluency in JavaScript also allows me to smoothly handle backend systems and properly connect them to the frontend. One area of expertise that sets me apart is my passion for solving problems. Debugging issues across the front-end, back-end, and server is second nature to me. I put this quality to use when the frontend isn't receiving data from the API by first confirming if there are any issues in the backend with proper API data flow, then checking if there are any frontend related issues by examining things through debugging console calls. If still unanswered, I step up my strategy by thoroughly analyzing server logs or API logs if available. Thank you for considering my application. Looking forward to discussing how I can bring maximum value to your team!

@Rekhathakur

Hello I have thoroughly reviewed your project description and am confident in my ability to assist you in completing it successfully. I believe it would be highly beneficial to delve deeper into the specifics of the job to determine the most effective way forward. I am open to scheduling an interview at your convenience, and I genuinely appreciate the chance to collaborate with you on this project. Your response is eagerly anticipated, and I'm excited about the prospect of working together. Thank you for considering my proposal. Looking forward to your prompt reply! Best regards Rekha!!!

@offshore9006

Hi, We’re a team of backend-focused developers with strong experience in Node.js, REST APIs, and end-to-end integrations. We specialize in building reliable backend systems and ensuring seamless connectivity with frontend applications. Why we’re a good fit: Built and deployed multiple scalable APIs (authentication, payments, dashboards, automation systems) Strong experience with webhooks and third-party integrations (Stripe, CRMs, custom APIs) Hands-on with GitHub workflows, CI/CD, and deployments on AWS, Render, and Netlify Comfortable managing environment variables, server configs, and production debugging How we connect backend to frontend: We design clean REST endpoints, ensure proper CORS setup, use structured JSON responses, and coordinate closely with frontend calls (fetch/axios). We also validate data flow using tools like Postman and browser dev tools to ensure correct request/response handling. Debugging approach (frontend not receiving data): We trace the full flow: Check API endpoint directly (Postman/cURL) Verify server logs and response codes Inspect frontend network tab (request, headers, payload) Check CORS, env variables, and deployment configs Validate async handling and error catching on the frontend We focus on delivering complete, working features—fast and reliably. Rate: $20/hr GitHub & API examples: Available on request Let’s build something solid. Best,

@Herculesz

Hi I’m a backend-focused engineer with strong experience in Node.js, REST APIs, and building reliable integrations that connect cleanly to frontend systems. I’ve worked on production APIs involving webhooks, third-party integrations, environment-based configs, and deployments across AWS, Render, and Netlify. The common issue in setups like this is not just building endpoints, but ensuring data flows correctly across frontend <--> backend <--> server without silent failures. I handle this by structuring APIs with clear response contracts, proper error handling, logging, and environment-aware configs to avoid broken connections during deployment. I’m comfortable debugging across the full stack, tracing issues from frontend requests down to server logs, network responses, and integration points. I also follow clean API design and versioning so features remain stable while scaling or adding new integrations. You’ll get fully working features, not partial implementations, with a focus on reliability and clean communication between systems. Thanks, Hercules

@XanvraTECH

Hello, I am Warda Haider, a skilled Backend and Full-Stack Engineer with expertise in PHP, JavaScript, Node.js, AngularJS, API Integration, and REST API. I have a strong background in building and maintaining backend APIs, connecting endpoints to the frontend, handling integrations, managing deployments, and debugging issues across various layers of the system. I understand the requirements of your project and am confident in my ability to effectively handle backend systems and ensure seamless connectivity with the frontend. My portfolio showcases my experience and successful projects in API development and integration. I am eager to discuss how I can contribute to your project further. Let's connect for a detailed conversation. Best regards, Warda Haider - MY WORK STATS: ✨ https://www.freelancer.com/u/XanvraTECH

@kareemmaize

Hi there When the frontend isn’t receiving data, I trace it step-by-step: check the frontend request (URL, method, headers, payload) verify the API endpoint directly (Postman/cURL) inspect backend logs and response handling check CORS, auth tokens, and environment variables confirm deployment config (Netlify/Render/AWS) and network issues For this role, the key is not just building APIs—it’s making sure the entire flow from frontend to backend to deployment works reliably and is easy to debug when something breaks. I work heavily with Node.js APIs, integrations, and deployment workflows (GitHub, Netlify/Render/AWS), and I focus on delivering complete, working features—not partial implementations. That includes proper request/response handling, environment management, and clean integration with the frontend. This means I understand your goal is a developer who can own issues end-to-end and resolve them quickly without back-and-forth. My process is simple: review current API and integration flow fix or standardize endpoints and environment setup ship features and debug issues across the full stack I’m comfortable moving fast, communicating clearly, and handling integrations independently..

@HNMN3

As an elite full-stack engineer, I am highly skilled in API integrations and have a vast experience working with Node.js. I specialize in backend development and have built numerous APIs, some of them being implemented in reputable projects. My proficiency with RESTful APIs and environment variables management makes me the perfect fit for your project requirements. What sets me apart from others is my knack for problem-solving and debugging. Like you expect, I always deliver working features, not partial work. Moreover, my dedication to using the right tools for the right job has led me to efficiently work with Github, Netlify, Render, and AWS - all of which are listed among your comfort requirements. My strong command on these platforms allows me to manage deployments smoothly and lets you pass on this responsibility without worrying about a hiccup in the process. In conclusion, choosing me doesn't just mean you'll be getting an average full-stack engineer but a reliable professional who values quality code, fast delivery while maintaining clear communication throughout the project!

@durgesh8527

As a seasoned full-stack developer with over 12 years of experience under my belt, I can confidently say I'm the ideal candidate for your Backend / Full-Stack Engineer role. My proficiency in Node.js and REST APIs aligns perfectly with your requirements, and my familiarity with popular collaboration tools like GitHub, Netlify, Render, and AWS will ensure seamless integration and efficient deployment. But that's not all. I also have a deep understanding of API integrations, environment variables, and deployment workflows. Where I particularly shine is in debugging, which we all know is an inevitable part of software development. When it comes to troubleshooting issues across frontend ↔ backend ↔ server interactions, I thrive! My extensive experience allows me to quickly identify the root causes of any problem and devise intelligent solutions - whether that means assessing problematic code sections or investigating server logs for data friction. The speed at which I can identify and resolve these issues caters perfectly to your expectation of delivering working features without delays or partial work.

@vishal1145

Your deployment workflow will fail if environment variables aren't properly scoped between Netlify and Render. I've seen teams lose 2-3 days debugging CORS errors and 500 responses because staging variables leaked into production or API keys weren't synced across platforms. Quick question - are you running separate environments for dev/staging/prod, and how are you currently handling webhook retries when external APIs timeout? Here's how I'd structure this: - NODE.JS + REST API: Build stateless endpoints with proper error handling and request validation using Joi or Zod to catch malformed payloads before they hit your database. - GITHUB + CI/CD: Set up automated deployment pipelines that run tests before merging and auto-deploy to Render/Netlify based on branch rules, eliminating manual deployment errors. - NETLIFY + RENDER INTEGRATION: Configure environment variable syncing and implement health check endpoints so you can monitor backend availability from the frontend without guessing. - WEBHOOK HANDLING: Implement idempotent webhook processors with retry logic and dead letter queues so you don't lose events when third-party services send duplicates or your server's temporarily down. - DEBUGGING STRATEGY: When frontend isn't receiving data, I check in this order - network tab for request payload, backend logs for incoming request shape, database query execution, then response serialization. Usually it's a CORS misconfiguration or the frontend sending camelCase when the API expects snake_case. I've built 15+ production APIs handling everything from payment webhooks to real-time chat systems. I don't deliver half-working features that need cleanup later. Let's discuss your current architecture and failure points before we start building. GitHub: [I'll send separately per your requirements]

@Feriver

Hello, I specialize in building and maintaining robust backend APIs with Node.js and connecting them seamlessly to frontends. I handle RESTful endpoints, webhooks, and external API integrations, ensuring reliable data flow and minimal latency. Deployments and environment variables are managed via AWS, Render, or Netlify, with Docker or CI/CD pipelines for reproducibility. When connecting backend to frontend, I ensure endpoints are fully documented, tested with Postman or similar tools, and that CORS, auth, and response formats align with frontend expectations. Error handling, logging, and retries are implemented to prevent data loss or stalled requests. I also debug independently, tracing issues across frontend ↔ backend ↔ server using logs, network inspection, and test endpoints. Timeline: 1–3 weeks depending on scope. I deliver fully working features, not partial implementations. GitHub examples of past API projects can be provided on request. Clarification questions: Are there specific third-party APIs you need integrated immediately? Should authentication be handled via JWT, OAuth, or another method? Thanks, Asif