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API Middleware & App Integrations

$200/hr Starting at $3K

Custom API Middleware & Third-Party Integrations

Most businesses rely on a patchwork of platforms: CRMs, e-commerce, ESPs, ERPs, payment gateways, and analytics tools. The problem? These systems rarely communicate the way you need them to. That leaves you stuck with manual exports, inconsistent data, and fragile workarounds that waste time and money.

I solve this by building custom API middleware solutions that bridge the gaps in your stack. My integrations are designed to be secure, scalable, and tailored to your unique workflows - ensuring data flows smoothly and reliably between every system you depend on.


🔧 What I Deliver


  • Custom Middleware Development
    Built with Node.js, Python, or AWS Lambda for lightweight serverless deployments — or full stack solutions when dedicated servers make more sense.

  • Flexible Hosting Options
    Run the middleware on your infrastructure (AWS, Azure, GCP, private cloud, or on-prem servers) for maximum control, or choose my fully managed SaaS where I host, monitor, and maintain everything for you. The SaaS option includes guaranteed uptime, proactive monitoring, and zero infrastructure overhead on your side.

  • Real-Time Data Synchronization
    Live data flows between systems eliminate delays and errors. Perfect for CRMs, ESPs, order processing, inventory sync, or reporting pipelines.

  • Third-Party Service Integrations
    Experience with Shopify, HubSpot, MailWizz, Salesforce, Zoho, Twilio, Stripe, SendGrid, Klaviyo, ActiveCampaign, and many more. If it has an API or webhook, I can connect it.

  • Webhook Setup & Payload Mapping
    Secure webhooks with custom transformations ensure every field lands exactly where it needs to, no matter how complex the schema.

  • Database & Infrastructure Options
    Support for MongoDB, MySQL, PostgreSQL, SQL Server, serverless DBs, and custom datastores - architected to fit your compliance, performance, and scaling needs.

  • Security & Compliance
    OAuth2, JWT, API key handling, SSL/TLS encryption, logging, and monitoring. Built with enterprise-grade reliability and compliance standards in mind.


🚀 Why Choose Me


  • Proven Results > I’ve delivered production middleware connecting countless mission-critical systems.

  • Deployment Versatility > Whether you need it running in your own cloud, inside a local data center, or fully managed as SaaS with uptime SLAs, I provide the model that works best for your business.

  • Enterprise-Ready Engineering > Solutions are modular, extensible, and designed to scale from startup to global enterprise. Add new endpoints or expand to new platforms without rebuilding from scratch.

  • Lifecycle Support > I provide architecture design, development, deployment, monitoring, and documentation. I don’t just code - I deliver systems your team can confidently operate long-term.


💡 Bottom Line


I help businesses eliminate silos and unlock the full potential of their data with middleware that’s custom, secure, and future-proof - whether hosted on your infrastructure or as my fully managed SaaS.

About

$200/hr Ongoing

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Custom API Middleware & Third-Party Integrations

Most businesses rely on a patchwork of platforms: CRMs, e-commerce, ESPs, ERPs, payment gateways, and analytics tools. The problem? These systems rarely communicate the way you need them to. That leaves you stuck with manual exports, inconsistent data, and fragile workarounds that waste time and money.

I solve this by building custom API middleware solutions that bridge the gaps in your stack. My integrations are designed to be secure, scalable, and tailored to your unique workflows - ensuring data flows smoothly and reliably between every system you depend on.


🔧 What I Deliver


  • Custom Middleware Development
    Built with Node.js, Python, or AWS Lambda for lightweight serverless deployments — or full stack solutions when dedicated servers make more sense.

  • Flexible Hosting Options
    Run the middleware on your infrastructure (AWS, Azure, GCP, private cloud, or on-prem servers) for maximum control, or choose my fully managed SaaS where I host, monitor, and maintain everything for you. The SaaS option includes guaranteed uptime, proactive monitoring, and zero infrastructure overhead on your side.

  • Real-Time Data Synchronization
    Live data flows between systems eliminate delays and errors. Perfect for CRMs, ESPs, order processing, inventory sync, or reporting pipelines.

  • Third-Party Service Integrations
    Experience with Shopify, HubSpot, MailWizz, Salesforce, Zoho, Twilio, Stripe, SendGrid, Klaviyo, ActiveCampaign, and many more. If it has an API or webhook, I can connect it.

  • Webhook Setup & Payload Mapping
    Secure webhooks with custom transformations ensure every field lands exactly where it needs to, no matter how complex the schema.

  • Database & Infrastructure Options
    Support for MongoDB, MySQL, PostgreSQL, SQL Server, serverless DBs, and custom datastores - architected to fit your compliance, performance, and scaling needs.

  • Security & Compliance
    OAuth2, JWT, API key handling, SSL/TLS encryption, logging, and monitoring. Built with enterprise-grade reliability and compliance standards in mind.


🚀 Why Choose Me


  • Proven Results > I’ve delivered production middleware connecting countless mission-critical systems.

  • Deployment Versatility > Whether you need it running in your own cloud, inside a local data center, or fully managed as SaaS with uptime SLAs, I provide the model that works best for your business.

  • Enterprise-Ready Engineering > Solutions are modular, extensible, and designed to scale from startup to global enterprise. Add new endpoints or expand to new platforms without rebuilding from scratch.

  • Lifecycle Support > I provide architecture design, development, deployment, monitoring, and documentation. I don’t just code - I deliver systems your team can confidently operate long-term.


💡 Bottom Line


I help businesses eliminate silos and unlock the full potential of their data with middleware that’s custom, secure, and future-proof - whether hosted on your infrastructure or as my fully managed SaaS.

Skills & Expertise

API DevelopmentData ManagementEngineeringSaaS

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