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I am looking for an experienced developer to build and deploy a VPS hosted middleware service to run a reliable, production grade integration between GoHighLevel (GHL) and ServiceM8. We are moving to a VPS hosted approach so we can run stable sync jobs, enforce correct data rules, improve logging and traceability, and reduce failures and timeouts. This will be deployed into production for a real business, so quality, security, documentation, and maintainability matter. Preferred hosting DigitalOcean, Sydney region, Ubuntu LTS. Scope and deliverables 1. Bi directional contact sync with deduplication The middleware must reliably sync contacts between GoHighLevel and ServiceM8 in both directions. It must prevent duplicates using sensible matching rules, including: Email matching Phone matching Where needed, name plus address validation It must be idempotent so reprocessing does not create duplicate records. 2. Multi site support (clients with multiple service addresses) We have clients who may have multiple sites or service addresses. The solution must support multi site use cases, not just a single address per contact. Your proposal must clearly define: How multiple sites will be represented in GoHighLevel How those sites map to ServiceM8 How new sites are created and linked to the correct existing client How the system prevents a new site from creating a duplicate client profile If the platform requires any manual association step for site records, that must be clearly documented and included in the handover. 3. Strict overwrite and data protection rules (critical) There is a known risk of bad overwrites causing incorrect addresses, duplication, or broken client records. The middleware must enforce strict rules such as: Never overwrite a complete address with an incomplete address Never overwrite a correct site address with a billing address or vice versa Prefer the most complete and most recently verified data Log every overwrite decision with before and after values 4. Reliable processing (webhooks plus scheduled sync jobs) The system must support: Webhook processing where available Scheduled sync jobs and polling where needed Safe retry behaviour with backoff and rate limit handling A queue or retry strategy so failures can be reprocessed safely without duplicates 5. Logging, monitoring, and audit visibility (non negotiable) The solution must provide: Centralised logs showing what ran, what changed, and why The ability to trace a single contact or site through the full sync path Clear error reporting and notifications when failures occur A simple way for us to access logs and status without being developers 6. ServiceM8 notifications handling (required) We receive system generated ServiceM8 emails and notifications (job updates, scheduling changes, system alerts, etc). These must be captured reliably and logged into GoHighLevel in the correct way. Requirements: Log non replyable ServiceM8 system notifications as internal Notes or Activities in GoHighLevel, not Conversations Log replyable client facing ServiceM8 emails in GoHighLevel as Conversations so admin can see and respond Avoid duplicate logging if the same notification is reprocessed Link each logged item to the correct Contact and where possible the correct site or job Include clear tags or labels so staff can distinguish system notifications vs client communications 7. Gmail ingestion and parsing (required) The middleware must ingest emails from Gmail and route them correctly into GoHighLevel based on rules. Requirements: Connect securely to our Gmail (preferred OAuth or secure delegated access, no plain text passwords) Ingest inbound emails and identify whether they are client replies or enquiries (Conversation) or system notifications (Note or Activity) Deduplicate processing so the same email is not imported twice Maintain an audit trail including message ID, timestamp, sender, subject, and what record it was linked to Provide basic configuration so rules can be adjusted over time (for example whitelists, sender domains, subject keywords) 8. Documentation and handover Provide clear documentation covering: How the VPS is set up and secured How to deploy and redeploy How to rotate API keys How to view logs and health status How to troubleshoot common issues Full mapping and overwrite rules explained in plain English Requirements and experience You must have proven experience with most of the following: GoHighLevel API ServiceM8 API Webhooks, scheduled jobs, and robust integration patterns VPS deployment and basic DevOps Logging, monitoring, and alerting If you also have experience with Zapier, Make, or GoHighLevel workflows, include that in your proposal. Security requirements Firewall and SSH hardening Secrets management approach (no keys stored in plain text) Least privilege access where possible Costs and ongoing costs (must be included) Your proposal must clearly separate: A One off setup cost (fixed price) Includes server provisioning, middleware deployment, configuration, logging and monitoring setup, testing support, and documentation handover. B Optional ongoing monthly maintenance State exactly what is included, response expectations, and what is out of scope. C Third party recurring costs Provide estimates for: DigitalOcean monthly hosting cost based on your recommended spec Any other services you recommend (logging or monitoring tools), with monthly estimates I will not accept proposals that only quote a build cost but do not state expected ongoing costs. Acceptance testing (how success will be judged) We will test your delivery using real scenarios, including: Existing client books online and does not create a duplicate profile A new site can be added under an existing client and remains correctly linked Address fields do not overwrite incorrectly Repeated sync runs do not create duplicates ServiceM8 system notification email is logged as a Note or Activity and does not create a Conversation Client reply email is ingested and appears as a Conversation linked to the correct Contact, without duplicates Logs clearly show what happened for each test case What to include in your proposal Recommended tech stack and why Recommended DigitalOcean server spec and monthly cost estimate Timeline for an initial working version and then a production hardened version Examples of similar work
Project ID: 40229357
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I will build a production‑grade VPS middleware on DigitalOcean (Sydney, Ubuntu LTS) using Node.js (NestJS) or Python (FastAPI) with PostgreSQL + Redis for queues. This ensures idempotent bi‑directional sync, strict overwrite rules, webhook + scheduled jobs, retry/backoff, and full audit logging. Server spec: DO 2–4GB Droplet ($24–$48/mo). Build (fixed): Includes deployment, security hardening, logging, Gmail OAuth ingestion, documentation, and acceptance testing. Maintenance (optional): Monitoring, updates, SLA support.
$105 AUD in 7 days
2.7
2.7
28 freelancers are bidding on average $123 AUD for this job

Hello, I have 10 years of experience in developing robust middleware solutions and integrations. For the VPS hosted middleware project, I propose to use a tech stack centered around Node.js for scalable, real-time processing capabilities. The DigitalOcean server, based in the Sydney region with Ubuntu LTS, will be provisioned according to load requirements; I estimate a monthly cost of approximately $20. An initial working version can be delivered in 4 weeks, with a production-hardened version in 8 weeks. I have extensive experience with GoHighLevel, ServiceM8 APIs, and secure VPS deployments. I offer a fixed setup cost, including server provisioning, middleware deployment, and documentation handover. Optional ongoing maintenance includes monthly health checks, system updates, and response within 24 hours. I will also provide third-party cost estimates for hosting and monitoring services, ensuring transparency in ongoing expenses. Regards, VishnuLal NB
$140 AUD in 4 days
6.4
6.4

Hi there, I understand you need a robust VPS-hosted middleware for seamless, reliable GoHighLevel and ServiceM8 integration ensuring secure, production-grade bi-directional contact sync and multi-site support. With 7+ years in server infrastructure, API integration, and secure DevOps, I will deliver: - Reliable contact deduplication using email, phone, and address validation - Multi-site client mapping with clear duplication prevention - Strict overwrite rules with detailed audit logs - Webhook and scheduled job syncs with failure retries - Comprehensive logging, monitoring, and alerts with user-friendly access - Secure Gmail integration and ServiceM8 notification handling - Detailed documentation and handover **Skills:** ✅ API integration & Node.js middleware development ✅ VPS deployment & DigitalOcean (Ubuntu LTS) expertise ✅ OAuth & secure Gmail ingestion ✅ Robust logging, monitoring & retry mechanisms ✅ Security best practices: firewall, SSH hardening, secret management **Certificates:** ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 I propose an initial working version in 4 weeks, with production hardening in 2 additional weeks. I will recommend a DigitalOcean VPS spec tailored to your load and recommend optional ongoing maintenance covering updates, monitoring, and support. What is the expected daily sync volume, and are there specific peak traffic periods we should prepare for? Thanks,
$140 AUD in 15 days
5.5
5.5

I am well-equipped to handle the VPS hosted middleware for reliable GoHighLevel and ServiceM8 integration project. My expertise in Node.js, VPS, Ubuntu, OAuth, and Alerting align perfectly with the requirements. The budget can be adjusted after a detailed discussion, and I am committed to delivering within your financial constraints. With 15 years of experience, customer satisfaction is my top priority. Let's discuss the project details and get started right away. Please review my profile for past work examples. I am eager to showcase my dedication by starting work immediately.
$98 AUD in 3 days
5.1
5.1

Hello! I understand your goal of building a reliable VPS-hosted middleware solution for GoHighLevel and ServiceM8 integration. My experience aligns perfectly with your requirements for bi-directional contact sync and strict data protection rules. I will ensure that every aspect, from deduplication to logging, is meticulously handled to maintain data integrity and traceability. My solution will also include clear documentation and will support multi-site configurations effectively. Rest assured, I'll deliver a product that not only meets your needs but exceeds your expectations. Please check my profile for examples of similar projects I have successfully completed. Regards, Davide
$200 AUD in 3 days
4.7
4.7

With almost a decade of experience in web and mobile development, I have a profound understanding of creating robust and scalable solutions that not only perform reliably but also ensure data security and protection, one of the most critical points in your project requirements. By creating a VPS hosted middleware service, I can effectively orchestrate a seamless integration between GoHighLevel and ServiceM8 with secure hosting such as DigitalOcean, ensuring reliable sync jobs and constant backend support to log every action for optimal diagnostics. When it comes to handling multi-site support like your project requires, my expertise in platforms like GoHighLevel and ServiceM8 will prove useful. I understand the importance of representing multiple sites for clients within the system without creating duplications or loss of data accuracy. This is crucial for maintaining an organized structure within the platforms and a seamless user experience. Furthermore, I am well-versed in managing webhooks, scheduled sync jobs, and processing reliable data using queuing strategies with an effective retry mechanism that prevents duplicates without sacrificing efficiency. This means regardless of whether we use webhooks or polling, your sync jobs will always run seamlessly without any data integrity issues. Lastly, my strong skills in logging, monitoring, and providing audit visibility guarantee that you will have centralized logs for effective tracing of contacts and inf
$105 AUD in 7 days
4.4
4.4

Hello! I’ll build a VPS-hosted Node.js (or Python) middleware on DigitalOcean (Sydney) with webhook + scheduled sync, strict overwrite rules, idempotent dedupe, Gmail OAuth ingestion, and full audit logging. Centralized logs, retry queue, and secure secrets handling included. DO droplet ~$20–40/month. Initial working version in 7–10 days, hardened production in 2–3 days. Extensive API integration experience. Best Regards!
$120 AUD in 3 days
3.0
3.0

Hello! I’m an experienced integration developer with a strong background in building reliable, secure middleware solutions for CRM and SaaS platforms, including extensive work with APIs like GoHighLevel and ServiceM8. I understand the critical importance of data integrity, security, and traceability in production environments. **Timeline:** - Initial prototype: 1 week after project start. - Hardened, production-ready version: additional 2 weeks for testing, security hardening, and documentation. **Examples:** I’ve built similar integrations for CRM and SaaS platforms, ensuring data integrity, auditability, and scalability. I can share relevant case studies upon request. I look forward to discussing your project further and tailoring a solution that fits your needs!
$70 AUD in 7 days
2.1
2.1

I’ve reviewed your requirements in detail and my understanding is: you need a production-grade VPS-hosted middleware service running on DigitalOcean (Sydney, Ubuntu LTS) to provide a reliable, auditable, and secure bi-directional integration between GoHighLevel and ServiceM8 — including multi-site logic, strict overwrite controls, webhook + scheduled processing, Gmail ingestion, and enterprise-grade logging and monitoring. I also have experience with Zapier and Make-based automation systems, and understand their limitations — which is why a VPS-based governed middleware is the correct move for your use case. This will be built as a long-term integration platform, not a fragile script. I can next provide a high-level architecture diagram and data flow map before formal engagement. Best Regards, Deepak
$105 AUD in 7 days
3.4
3.4

❤️Hello! I am a full-stack developer specializing in business automation and API integrations. I have reviewed your detailed requirements for a production-grade VPS-hosted middleware connecting GoHighLevel, ServiceM8, and Gmail. This is exactly the type of robust, maintainable system I build for businesses that have outgrown no-code tools like Zapier. I am really impressed about this opportunity as this is perfect fit for my skills and would like to discuss how we can move forward. Regards,
$100 AUD in 7 days
2.2
2.2

Hi there! Just wondering, do you need automated alerts if the data validation rules block a sync, or is manual review preferred? Regardless, this is definitely something that I feel confident delivering on, given my past experience. I would love to discuss your project further! Looking forward hearing from you. Kind Regards, Corné
$70 AUD in 14 days
0.9
0.9

Hi there, I’ve thoroughly reviewed your project for building a VPS hosted middleware to integrate GoHighLevel and ServiceM8, and I’m confident I can deliver a robust solution tailored to your needs. With extensive experience in API integrations, including GoHighLevel and ServiceM8, I understand the criticalities of data synchronization you outlined. I will develop a middleware that ensures reliable bi-directional contact sync, complete with deduplication and strict data protection rules to mitigate any risks associated with overwrites. By utilizing DigitalOcean's infrastructure, I will ensure optimal performance and logging capabilities, allowing for smooth operations and easy traceability. I recommend an initial setup cost of 120 AUD covering deployment and documentation, with 40 AUD monthly for ongoing support to handle potential issues. Let’s discuss how site records and notifications will be effectively managed to meet your requirements. Sincerely, Thaveesha
$120 AUD in 2 days
0.0
0.0

Hello Matthew, I'm Dax Manning, a seasoned developer with over 8 years of experience in Node.js and robust integration patterns. I have carefully reviewed your project requirements for building and deploying a VPS hosted middleware service for reliable GoHighLevel and ServiceM8 integration. I understand the need for a stable sync solution that enforces data rules, improves logging, and reduces failures. I will ensure bi-directional contact sync with deduplication, support for multi-site clients, strict overwrite rules, reliable processing through webhooks and scheduled sync jobs, comprehensive logging and monitoring, handling of ServiceM8 notifications, Gmail ingestion and parsing, and thorough documentation for seamless handover. Let's discuss further details in the chat for a more tailored approach to your project requirements. Thanks, Dax Manning
$110 AUD in 7 days
0.0
0.0

Warm Hello! I can build a production-grade VPS-hosted middleware to reliably sync contacts, sites, and notifications between GoHighLevel and ServiceM8 with full logging, auditability, and strict data protection. As a seasoned developer with 9+ years of experience in API integrations, webhooks, scheduled jobs, and VPS deployment, I specialise in robust middleware solutions that are secure, maintainable, and production-ready. Here's how I can help: Bi-directional contact sync with deduplication, idempotency, and multi-site support Strict overwrite rules to preserve complete, accurate data and log all changes Scheduled jobs plus webhook processing with retry/backoff strategies to prevent duplicates ServiceM8 notifications captured correctly (system notes vs client conversations) Gmail ingestion with parsing, deduplication, and routing into GHL Centralized logging, monitoring dashboards, and audit trails for every operation Secure VPS setup on DigitalOcean (Ubuntu LTS, Sydney) with firewall, SSH hardening, and secrets management Clear documentation covering deployment, configuration, logs, troubleshooting, and API key rotation Recommended stack: Node.js or Go backend with PostgreSQL for queuing/logging, deployed on a DigitalOcean droplet (4 vCPU, 8GB RAM, 160GB SSD, ~$40–50/month), optional monitoring via Loggly/Prometheus (~$15–20/month).
$200 AUD in 7 days
0.0
0.0

Hello. I read your requirement i will do that. Please come on chat we will discuss more about this. I will waiting your reply
$140 AUD in 1 day
0.0
0.0

As an experienced full-stack developer with a strong background in building and scaling enterprise-level solutions, I am confident in my ability to meet the complex needs of your VPS hosted middleware project. Throughout my 12+ years in the field, I've consistently delivered high-quality, secure, and maintainable code – all qualities you've expressed are crucial for this project. Rest assured, I will make sure your team can access logs and statuses without any technical barriers. Let us work together to achieve successful integration between GoHighLevel and ServiceM8!
$140 AUD in 7 days
0.0
0.0

Hello, For building a VPS-hosted middleware service syncing GoHighLevel and ServiceM8, I can create a robust, production-grade integration with bi-directional contact sync, multi-site support, strict overwrite rules, webhook and scheduled job handling, Gmail ingestion, and full logging and audit visibility. I’m senior full-stack developer 7+ years experience focusing on React, Next, Vue, WordPress, Nuxt as front-end and NodeJs, Laravel, Django as back-end, with hands-on experience in API integrations, VPS deployment, secure DevOps practices, and building maintainable middleware for business-critical workflows. As a fast learner, I’m highly proficient at ensuring idempotent syncs, handling notifications and emails accurately, providing clear audit logs, and documenting everything so your team can maintain and monitor the system with confidence. I can also recommend the optimal tech stack, server spec, and ongoing monitoring setup to minimize failures and ensure traceable, reliable operations. My key strengths are my attention to with detail and ability to work with other developers and willingness to learn new skills. I am available to start work immediately. we can discuss in more detail via chatting. Regards, Maria
$105 AUD in 7 days
0.0
0.0

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