Integration Architect

Mohammad Saddam

Bulletproof HubSpot Integrations for Scaling SaaS

I build high-reliability syncs that eliminate manual data entry and ensure your CRM remains your single source of truth.

Technical Expertise

🔷CRM & Integration Architecture

🔐API & Authentication

⚙️Reliability & Sync Systems

🗄️Backend & Data Layer

CRM & Integration Architecture

HubSpot CRM APIs (Contacts, Deals, Associations)
Two-Way Data Synchronization
Webhook-Based Architectures
Delta & Incremental Sync
Data Mapping & Transformation
Idempotent Processing

API & Authentication

RESTful APIs
OAuth 2.0 (Refresh Token Handling)
API Keys & JWT
Rate Limiting & Retry Strategies
Webhook Validation & Security

Reliability & Sync Systems

Background Workers & Async Processing
Retry & Exponential Backoff
Fallback Polling Recovery
Dead Letter Handling
Structured Logging
Production Monitoring

Backend & Data Layer

Node.js (ES Modules)
Express.js
TypeScript
PostgreSQL
MongoDB
Redis

Every integration I build includes retry mechanisms, monitoring, fallback recovery strategies, and structured logging — ensuring production-grade reliability from day one.

Featured Open Source

HubSpot CRM Integration Toolkit

I built and maintained a library for v4 batch associations and automated pagination.

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v4 Batching

Reliable object linking.

Pagination

Auto-fetches data.

Auth Support

Supports Private App & OAuth 2.0 access tokens.

Clean Architecture

Abstracted HTTP handling with Axios & Winston.

Professional Architecture

Review my track record in **Cloud Infrastructure** and **Enterprise API Integrations**.

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Expertise Eras

Strategic Integration Roadmap

A track record of stabilizing data ecosystems for healthcare, legal, and eCommerce operations.

Aug 2025 - Mar 2026

Backend Integration Engineer

Solution For Web | Delhi NCR

Specialized in architecting fault-tolerant middleware for high-stakes SaaS data synchronization.

Engineered resilient HubSpot ↔ Filevine data pipelines with complex association mapping

Implemented delta-sync logic processing 10,000+ records per cycle with 99.9% integrity

Reduced integration failure rates by 40% through custom retry-management systems

Architected OAuth 2.0 lifecycle managers to ensure zero-downtime API connectivity

Aug 2025 - Feb 2026

Consultant & Backend Architect

Freelance / Contract | Remote

Consulting for startups to bridge the gap between fragmented SaaS tools and centralized data schemas.

Designed HIPAA-aware patient data sync systems for healthcare platforms

Developed custom Node.js SDKs to streamline HubSpot CRM API interactions

Engineered idempotent revenue pipelines for Znode eCommerce platforms

Built and maintained enterprise-grade RESTful APIs with strict schema validation

Select Integration Case Studies

I build systems where data integrity isn't a goal—it's a mission-critical requirement.

Sales Enablement / AI

Intermedia ↔ Gong Voice Intelligence Sync

Architected a full-lifecycle Node.js utility to sync call recordings from Intermedia to Gong. Managed complex user mapping, automated call creation, and binary media uploads with a fail-safe cleanup layer.

Automated user mapping

99.9% Sync Integrity

Node.js (ESM)Gong APIMedia BufferingFS Cleanup

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