We don't just build setups.
We engineer growth.
Founded on a simple conviction: high-growth marketing agencies shouldn't lose clients to brittle no-code workflows. We treat CRM architecture with the rigor of enterprise software.
Years CRM Engineering
Specializing in HighLevel since 2021
Sub-Accounts Architected
Across agency, SaaS & healthcare
System SLA Uptime
Zero dropped leads or webhook errors
Avg Middleware Latency
Sub-second custom V2 API sync
How we approach CRM engineering.
Four foundational pillars that guarantee error-free scalability for every marketing agency we partner with.
Zero-Collision Snapshot Architecture
We enforce strict prefix namespaces for custom fields and custom values. When you push snapshot updates across 100+ sub-accounts, client-specific setups are never overwritten.
Sub-100ms Native API Middleware
We replace fragile multi-step Zapier chains with dedicated Node/TypeScript middleware layers that communicate directly with GHL V2 REST & Webhooks.
Carrier-First A2P 10DLC Compliance
We guarantee seamless SMS deliverability by handling carrier brand vetting, TCPA compliant opt-in capture, and LC Phone round-robin dispatch.
Radical Transparency & Proof of Work
No murky retainers or inflated invoices. You buy prepaid hours in 15-minute tracked increments with Loom video proofs recorded for every single task.
Our journey to engineering excellence.
From a boutique technical consultancy to the infrastructure partner behind hundreds of agency sub-accounts.
Founding & First Custom HighLevel Deployments
ErrorNix was founded by senior full-stack engineers with a focused mission: provide marketing agencies with real code-level CRM architecture instead of brittle drag-and-drop band-aids.
Global Scale & Custom V2 Webhook Engine
Partnered with over 50 marketing agencies across the US, UK, and Australia. Released our proprietary sub-100ms API middleware layer connecting GHL to custom PostgreSQL databases.
A2P 10DLC Carrier Compliance Specialization
Engineered automated carrier vetting and TCPA compliance protocols, achieving a 100% first-pass registration rate for over 100+ client sub-accounts across healthcare and real estate.
Prepaid Hours Dispatch & 500+ Sub-Accounts
Pioneered the on-demand prepaid engineering hours model with 15-minute tracked increments and Loom video proofs, scaling our infrastructure past 500+ active managed sub-accounts.
Meet the engineers behind the systems.
A dedicated squad of senior developers and CRM architects committed to zero-downtime execution.
Rahul Sharma
4+ years engineering complex HighLevel instances, custom Node.js middleware, and scalable multi-tenant snapshot systems for global agencies.
Priya Patel
Specializes in SaaS mode tier provisioning, dynamic custom values, and complex conversion workflows that maximize agency client retention.
Rohan Desai
The technical powerhouse behind our carrier registrations, webhook listeners, Twilio/LC Phone routing, and custom database sync layers.
Amit Singh
Dedicated to rapid-dispatch support tickets, snapshot regression testing, permission matrices, and Loom task proof deliveries.
Ready to eliminate CRM bottlenecks forever?
Purchase prepaid engineering hours or book a 1-on-1 architecture audit with our certified GoHighLevel engineers.