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I’m expanding a set of business-critical automations and I need someone who already knows n8n inside out. You’ll take the lead on three fronts: • Designing and refining advanced workflow automation that can scale without breaking existing processes • Building custom nodes when the default palette can’t cover a requirement, keeping the code clean, documented, and merge-ready • Connecting n8n to a variety of external services—REST and GraphQL APIs, webhooks, and OAuth flows—so data moves seamlessly between our tools I’ll share a detailed mapping of each process, sample payloads, and access to a staging environment as soon as we start. Your work is considered complete when every workflow is running error-free in production, the custom nodes pass the n8n unit tests, and integrations survive a round of end-to-end tests. If you’ve shipped complex n8n projects before and enjoy squeezing the most out of its workflow engine, let’s talk.
Project ID: 40435589
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Active 9 hours ago
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106 freelancers are bidding on average $15 USD/hour for this job

It sounds like you need more than just standard n8n workflows. Since you mentioned needing custom nodes when the default palette falls short, I wanted to reach out. I know how quickly a simple automation can break when you start scaling, especially with complex REST or GraphQL integrations. My focus is on building a developer grade automation layer that is actually bulletproof. We handle the edge cases and retry logic that keep production environments from stalling. Every custom node we build follows clean code standards and passes rigorous unit testing to ensure it is merge ready. We make sure the integrations survive end to end tests before they ever touch your live data. You can see how we handle quality assurance here: https://www.freelancer.com/portfolio-items/11349812-web-scraping-automation. I am ready to jump into the staging environment and start mapping these flows. Want a 2-min screen recording of how I'd build custom node development? Just say the word. ~ Rajesh
$5 USD in 40 days
7.5
7.5

✅ Lovable AI Expert | AI Development | Game Development ✅ Hi, Thank you for considering this opportunity! I bring extensive experience in implementing custom solutions powered by LLMs, conversational AI, and intelligent automation. Recently I have been working on Lovable AI for developing a gaming platform using it, complete with chat-based agent logic, expressive front-ends, and backend integrations. See here : In other project, implemented a fully automated AI agent system for intelligent meeting creation using ElevenLabs Conversational AI and Gemini (via a custom agent brain). The flow integrates voice interaction, natural language processing, location precision, and frontend. Whether you're building an internal assistant, a public-facing voice agent, or an integrated AI productivity tool, I can help bring your vision to life with robust, scalable architecture and a human-like user experience. I would love to connect and explore how we can contribute to your AI initiative. Regards Ranjana
$5 USD in 40 days
6.7
6.7

Hello, I have carefully reviewed your requirements and clearly understand that you need an experienced n8n specialist to design scalable automations, develop custom nodes, and integrate multiple external services reliably into production workflows. With 10+ years of experience in automation engineering, API integrations, Node.js, workflow systems, and business process automation, I can confidently handle complex n8n implementations and optimization tasks. I have hands-on experience building advanced n8n workflows, custom nodes, webhook systems, OAuth integrations, REST/GraphQL API connections, error handling, queue management, and production-grade automation pipelines. I can ensure the workflows remain scalable, maintainable, and properly documented while preserving existing business logic and system stability. I will work directly on development, testing, debugging, and deployment, including unit testing for custom nodes and full end-to-end workflow validation in staging and production environments. Hourly Rate: $8 USD/Hour Availability: Immediate Start I WILL PROVIDE 2 YEARS FREE ONGOING SUPPORT, CLEAN DOCUMENTED CODE, AND COMPLETE ASSISTANCE FOR DEPLOYMENT AND FUTURE SCALING. WE WILL WORK WITH AGILE METHODOLOGY FOR TRANSPARENT AND STRUCTURED DELIVERY. I am confident in delivering reliable and production-ready automation solutions aligned with your requirements. I eagerly await your positive response. Thanks.
$8 USD in 40 days
5.2
5.2

Your biggest challenge isn't n8n or APIs it's building workflow automation that can scale across systems without breaking existing processes when complexity increases. That stability and orchestration layer is where most freelancers fail. It's also exactly what I do. Here's what I'll build for you 1 Design and optimize advanced workflows in n8n that are scalable modular and resilient under production load 2 Build custom nodes when native capabilities are not enough ensuring clean documented and production ready code that passes testing standards 3 Connect external systems through REST GraphQL webhooks and OAuth so data flows reliably across all your tools without failure points Tested on real multi system automation setups before I hand it over. You own everything full documentation included. No hidden dependencies or external lock in on my end. I'd love a quick 20 minute call to review your current workflows payload structure and system map before we start. Ready to kick off within 24 hours. Warm Regards Usama F
$5 USD in 40 days
4.3
4.3

As an experienced AI Engineer with a passion for automation, I believe I am the perfect fit for your Senior n8n Automation Expert role. With over 12 years of delivering successful automation projects and the unique distinction of having worked on over 600 artificial intelligence-based projects, including multiple AI chatbot implementations and efficient business process automation designs, I bring the rare combination of technical expertise and creative problem-solving that this project requires. My extensive experience in API integrations has allowed me to develop a deep understanding of REST, GraphQL, webhooks, and OAuth flows which would be invaluable in seamlessly connecting n8n with various external services. One of my key strengths as an AI professional is my ability to optimize complex systems without breaking existing processes. This skill aligns perfectly with your need to design advanced workflow automations that can scale without disrupting existing procedures. Additionally, my proficiency in developing custom nodes when standardized solutions fall short ensures the code base remains clean, well-documented, and easily merge-ready.
$10 USD in 20 days
4.0
4.0

I can refining your n8n automation I will build and optimize advanced workflows, develop custom nodes where required and integrate external services through REST APIs, webhooks and OAuth authentication. Regards, Shawana
$5 USD in 40 days
3.8
3.8

With a deep understanding of your needs for n8n expertise in automating complex workflows, I believe my years of API integration and software development experience make me the ideal fit for your project. Having solved intricate problems across diverse sectors and international clients, I'm adept at designing and refining workflows that can scale without glitching existing processes - just as you require! Moreover, I've built custom nodes before, which will come in handy to collectively secure a merge-ready workflow environment. My developed nodes are always clean, maintainable, and well-documented to ensure ease of use for your team long after the project is finalized. Additionally, my tested-and-proven skills at connecting systems with REST and GraphQL APIs, webhooks, and OAuth flows will ensure seamless data flow across tools for you. Not only am I experienced with n8n but highly adept at prioritizing business goals over just technological requirements. I not only deliver clean and error-free end products but also create solutions that are scalable and built to grow with your business's future demands. Let's embark on this journey together, understand every pain point of your operations to optimize them through automation!
$5 USD in 40 days
3.8
3.8

Hi, this fits closely with what I do — practical automation work where the workflow has to keep running cleanly after it reaches production. I can help refine the n8n flows, build custom nodes where the standard nodes fall short, and handle the API/OAuth side so data moves reliably between services. A similar case I worked on involved an assistant workflow where user actions triggered backend tools, external APIs, and follow-up logic; the key was adding clear error handling and context checks so one bad payload didn’t break the whole chain. I’d start by reviewing your process maps and sample payloads, then test each workflow in staging before touching production. The main risk is hidden edge cases in API responses or auth refresh flows, so I’d avoid that with logging, retry paths, test payloads, and end-to-end checks before release. Thanks!
$7 USD in 40 days
3.9
3.9

Hello, I can take full ownership of your n8n automation work including advanced workflow design, custom node development, and multi-system API integrations. I have strong hands-on experience building scalable n8n workflows that handle complex data routing, error handling, and production grade automation without breaking existing processes. I can develop clean, well-documented custom nodes when native nodes are not sufficient, ensuring they are maintainable and compatible with n8n standards and testing requirements. I will integrate REST and GraphQL APIs, webhooks, and OAuth flows to ensure seamless and reliable data movement across your systems. All workflows will be built and tested in staging first, then validated with full end-to-end testing before production deployment to ensure stability. I can start immediately and will ensure everything is delivered fully functional, tested, and ready for long term scaling.
$5 USD in 40 days
3.9
3.9

Hello, I’m interested in the Senior n8n Automation Expert role and can help design, build, and stabilize scalable automation workflows across your business systems. I have experience building complex n8n workflows involving REST and GraphQL APIs, OAuth authentication flows, webhooks, and multi-step data pipelines with error handling and retries. I’m also comfortable developing custom nodes when native nodes are not sufficient, ensuring clean, documented, and production-ready code that integrates smoothly with n8n standards. I can take ownership of workflow architecture, ensure reliability under scale, and optimize execution logic so processes don’t break as usage grows. I also follow structured testing practices, including end-to-end validation and debugging across staging and production environments. Once you share the process maps and sample payloads, I can quickly translate them into stable workflows, integrate all required services, and ensure everything runs reliably in production. Timeline and budget can be discussed further based on number of workflows and complexity of custom node development. Warm regards, Harpreet Singh
$5 USD in 50 days
3.3
3.3

As a seasoned full-stack engineer, n8n falls right within my wheelhouse. For over 6 years, I have been creating and launching production-ready web apps from scratch to finish, my expertise ranging from building modern frontends to solid backend APIs and databases. This comprehensive experience makes me the ultimate choice for your project as I'm well-versed in handling complex automated processes using n8n. In addition, I'm committed to clean and reliable coding practices that align with your need for scalable automation without compromising existing processes. You can trust me to not only design advanced workflow automation but also build custom nodes whenever necessary ensuring that these would be documented, merge-ready, and pass the n8n unit tests without fail. Moreover, my data-driven mindset will greatly enhance your integrations as I bring complementary skills in data pipelines, analytics and ML components. This is your opportunity to work with a pro who knows how to reduce manual work and operational errors through seamless system-to-system workflows. I am excited to take this journey with you, solve challenges together and make your business thrive!
$5 USD in 40 days
3.3
3.3

I have built and scaled production workflow automations with custom nodes, complex error handling, and secure OAuth integrations. I will take ownership of your three fronts: refine existing flows, build custom nodes (tested, documented), and connect to REST/GraphQL APIs and webhooks. https://www.freelancer.com/portfolio-items/11343426-lead-management-automation-with-make https://www.freelancer.com/portfolio-items/11350188-ai-video-generation-machine https://www.freelancer.com/portfolio-items/11139983-workflow-automation-n8n My approach: map your processes → implement modular flows → test in staging → deploy to production with rollback plan. I ensure all integrations survive end‑to‑end tests. **Question:** Do you have a staging environment and sample API credentials ready for the first integration batch? Best, Usman Kokab
$5 USD in 40 days
3.3
3.3

Hi there, Strong alignment with this project comes from experience delivering scalable automation systems involving advanced n8n workflows, custom node development, API orchestration, and production-grade integration architectures. Clear understanding of the requirement to build and optimize business-critical n8n automations featuring scalable workflow orchestration, custom node creation, REST and GraphQL integrations, OAuth handling, webhook systems, and production-ready deployment validation. Hands-on expertise with n8n, Node.js, TypeScript, REST APIs, GraphQL, OAuth flows, webhook automation, queue-based architectures, and scalable integration workflows ensures reliable automation performance, maintainable custom nodes, and efficient long-term scalability. Risk is minimized through structured workflow testing, integration validation, custom-node unit testing, production deployment verification, error-handling optimization, and maintaining clean documentation with scalable workflow architecture practices. Available to start immediately happy to share a quick demo or discuss next steps. Recent work: https://www.freelancer.com/u/chiragardeshna Regards Chirag
$5 USD in 40 days
3.4
3.4

Hi! I can help you with designing and scaling your n8n workflows, building custom nodes, and wiring up the API integrations. I've worked extensively with REST and GraphQL APIs, OAuth flows, and webhook setups so connecting external services is second nature. I'm Edward, 10+ years of development experience. Clean documented code and solid testing are how I work by default so getting those custom nodes merge-ready and passing unit tests won't be an issue. Let's talk through your process mappings whenever you're ready.
$25 USD in 7 days
3.2
3.2

Hello, I am excited about the opportunity to lead the expansion of your business-critical automations as a Senior n8n Automation Expert. I understand the need for advanced workflow automation that can scale seamlessly without disrupting existing processes. My expertise in designing and refining workflows, building custom nodes, and connecting n8n to various external services makes me a strong fit for this project. I have successfully completed similar n8n projects in the past, ensuring clean code, thorough documentation, and seamless data flow between tools. My approach involves meticulous planning, rigorous testing, and continuous communication to ensure error-free workflows in production. Could you please provide more details about the specific external services and integrations that need to be connected to n8n? Additionally, do you have any preferences for the testing tools to be used for the end-to-end tests? Looking forward to the opportunity to collaborate on this project. Best regards, UmeKayani
$2 USD in 40 days
3.1
3.1

Hello there, we are a team of senior Full Stack Web and Mobile App Developers and we can do this project in no time. Thanks Ashish Kumar.
$5 USD in 40 days
3.3
3.3

Hi, I understand your issue — your n8n setup is working at a basic level, but **it’s not stable when workflows connect together under real production load**, especially with mixed REST/GraphQL/OAuth APIs and missing custom node handling. So the real problem is: * Workflows run individually, but fail when chained or scaled * API calls are inconsistent (auth/token handling + response mismatch) * n8n default nodes are limiting complex logic and reliability Here’s how I’ll fix it: ✔ Audit your existing workflows and find exact failure points ✔ Refactor workflows into modular, stable blocks (no fragile chaining) ✔ Fix API layer (OAuth, token refresh, retries, error handling) ✔ Build custom n8n nodes only where default nodes are limiting ✔ Add proper logging + retry system for production safety ✔ End-to-end testing in staging until everything is stable under load I’ve worked on automation systems where workflows are directly tied to production processes, so I focus on **stability + data consistency, not just “it runs” logic**. A few quick questions: • Which workflow is breaking most often right now? • Are failures happening during API calls or internal workflow execution? • Do you already have staging logs I can review first? Once I see that, I can quickly tell you what needs fixing first. Best regards Abhishek
$5 USD in 40 days
2.8
2.8

Hi, I can help streamline your automation processes while ensuring everything is scalable and error-free. With extensive experience in n8n, I’ve worked on diverse workflow automations, creating custom nodes and managing REST and GraphQL APIs. My previous projects involved clean, well-documented code that integrates seamlessly, so you won’t have to worry about any downtime. I’m ready to take the lead and will ensure every detail is thoroughly tested in your staging environment. Let’s discuss how I can help bring your automations to life! Best Regards, Priyanka
$8 USD in 40 days
2.9
2.9

Hi, there I have extensive experience designing and scaling complex n8n automation systems, including custom node development, OAuth integrations, webhook orchestration, REST/GraphQL API connectivity, and production workflow optimization. I can help structure your automations for reliability, maintainability, and scalability while ensuring existing business processes remain stable during expansion. I will build clean, documented custom nodes, implement robust error handling and retry logic, optimize workflow performance, and thoroughly test all integrations end-to-end before deployment. My focus is production-grade automation architecture that is easy to extend and maintain long term. I would love to review your workflow maps, staging environment, and integration requirements so we can move quickly into implementation and testing. Best Regards, Sean D.
$650 USD in 40 days
2.8
2.8

I sincerely believe that my extensive experience with automation and n8n, coupled with my broad range of skills in web/mobile app development, API integration, and business automation, make me the perfect candidate for your project. Over my career spanning 5+ years, I've successfully delivered 80+ projects that have helped businesses optimize their processes and scale efficiently just as you need. During this time, I've mastered JavaScript in its many frameworks including React and Node.js which gives me an edge in designing and refining complex workflows that can scale without a hitch. One area where I particularly excel is developing custom solutions to very specific use-cases. I understand the frustration of a process being forced into the boundaries of pre-built tools, and have built nodes before to bridge those gaps just like we would need in your project. My code is always clean, well-documented, and merge-ready - helping your team maintain those workflows long after our contract ends.
$5 USD in 40 days
2.2
2.2

Zouk Mosbeh, Lebanon
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Member since Dec 3, 2016
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