Cloud Infrastructure & API Integration Engineer

We are seeking a skilled engineer to enhance our cloud infrastructure and integrate APIs using Make.com and HubSpot. The role involves designing and implementing scalable cloud solutions, ensuring seamless API connectivity, and optimizing system performance. The ideal candidate will have experience in cloud architecture and API integration, with a strong understanding of DevOps practices. Core Technical Mandates: * Decoupled Multi-Agent Routing: Architecting independent Webhook scenarios inside Make.com (Integromat) that execute background data scraping, payload filtering, and structural parsing completely isolated from user-facing environments. * Strict Role-Based Data Siloing: Designing secure API write-permission gateways to ensure unredacted supplier identifiers, proprietary geographic markers, and source coordinates remain completely masked—injecting only blind alphanumeric tracking reference codes into the public HubSpot CRM dashboard. * Advanced Webhook Call-Overlay Integrations: Mapping post-event data payloads from third-party mobile tracking overlays (Salestrail/similar open APIs) and WhatsApp Business API to automatically match phone strings and append call audio metadata directly onto custom HubSpot timelines. * Multi-Platform Asynchronous Publishing: Engineering robust payload distribution loops with strict error-handling breaks and automatic back-off delay routers to sync sanitized data across multiple B2B platforms simultaneously without script timeout failures. Required Technical Stack & Qualifications: * Proven track record building enterprise-level, high-volume automation mainframes inside Make.com (Integromat). * Expert-level mastery of HubSpot CRM architecture, custom objects, and API endpoints. * Deep proficiency in managing webhooks, JSON payload parsing, regex formatting, and custom JavaScript/Python script modules within webhooks. * Absolute commitment to strict data privacy, non-disclosure protocols, and structural data compartmentalization. Contract & Compensation Matrix: * Structure: Fixed-Price Milestones via secure platform escrow portal. * Budget: $600.00 Fixed-Price Contract structured into three sequential milestones (Sandbox Pilot ➔ Core Infrastructure ➔ Firewall Deployment) + $50.00 Velocity/Performance Acceleration Bonus. * How to Apply: Please reply with a brief summary of your complex API integration experience. To filter out automated spam, you must include a link to a 60-second Loom video or a clear screenshot showing a multi-stage, high-complexity Webhook router scenario you have personally engineered inside Make.com.