Senior Full Stack AI Engineer

This role is open to candidates based in LATAM, Africa, and Eastern Europe. Please note that as this role supports U.S.-based clients, candidates must be available to work during U.S. business hours aligned with the client’s time zone.
The Senior Full Stack AI Engineer will take ownership of an advanced internal CRM and continue building the systems that support the company’s sales organization.
The immediate focus will be completing and stabilizing the existing CRM, which already includes calling, texting, real-time functionality, and AI-enabled features. The Senior Full Stack AI Engineer will audit the existing codebase, identify remaining work, address gaps and risks, and bring the platform to a reliable, production-ready state.
This is a hands-on full-stack engineering role, not a no-code automation position. The engineer must be able to independently work within an existing codebase, make technical decisions, and own work from start to finish.
Location
Fully Remote | 9:00 AM - 5:00 PM EST
Key Responsibilities
CRM Ownership & Development
Take ownership of the existing internal CRM across the Node.js and Express backend and React frontend.
Audit the existing codebase to identify gaps, bugs, technical debt, security risks, and incomplete functionality.
Build a clear plan for completing and stabilizing the CRM after reviewing the existing architecture.
Develop, test, and maintain features across lead management, communications, agent workflows, reporting, and administrative tools.
Debug and resolve issues affecting live applications.
AI Implementation
Maintain and improve AI functionality using OpenAI and Anthropic APIs.
Work within the existing agentic tool gateway, including tool permissions, policy controls, and safety restrictions.
Support future AI implementation projects as the business evolves.
Real-Time Communications
Maintain real-time functionality powered by Redis, Socket.IO, and Twilio Voice.
Support the communications functionality built into the CRM, including calling and texting.
Security & Data Protection
Protect customer and agent data through strong authentication, authorization, validation, logging, and tenant-isolation practices.
Maintain and improve the security and reliability of the platform.
Infrastructure & Deployment
Manage deployments and infrastructure across Render, Cloudflare, AWS S3, MongoDB Atlas, GitHub, and GitHub Actions.
Maintain and improve CI/CD and production deployment processes.
Support a stable release process for the CRM.
Internal Systems Development
Work directly with the founder and operations manager to translate business requirements into technical solutions.
Build the next internal systems, including a licensing and onboarding platform to replace the current GoHighLevel process.
Support additional internal systems and operational technology projects as the business evolves.
Qualifications
Experience
Senior-level full-stack software engineering experience.
Strong hands-on experience with Node.js, Express, React, and MongoDB.
Experience taking over, auditing, and improving an existing production codebase.
Experience building and maintaining secure, multi-tenant applications.
Hands-on experience integrating OpenAI, Anthropic, or comparable LLM APIs into production products.
Experience with GitHub, CI/CD, production deployments, and debugging live applications.
Experience with Twilio Voice, browser-based calling, or programmable communications is a plus.
Experience building CRMs, sales platforms, onboarding tools, learning platforms, or internal operations systems is a plus.
Experience with TCPA-sensitive communications, call recording, auditability, or regulated-industry workflows is a plus.
Experience moving workflows from GoHighLevel or similar tools into custom software is a plus.
Experience reviewing and improving AI-assisted code is a plus.
Skills
Strong proficiency with Node.js, Express, React, and MongoDB.
Strong understanding of authentication, authorization, data privacy, validation, and testing.
Ability to independently audit an existing codebase and determine the work required to stabilize and complete it.
Ability to make technical decisions without day-to-day engineering oversight.
Ability to own technical work from start to finish.
Experience working with real-time technologies including Redis and Socket.IO.
Experience managing production deployments and infrastructure.
Ability to translate business requirements into technical solutions.
Ability to manage changing priorities while maintaining security and reliability.
Technical Environment
Node.js and Express
React
Vite
Tailwind CSS
TanStack React Query
Zustand
React Router
Axios
Framer Motion
Recharts
MongoDB Atlas
Mongoose
Redis
Socket.IO
JWT authentication
bcrypt
TOTP 2FA
Zod
Sentry
Morgan
OpenAI SDK
Anthropic SDK
Twilio Voice SDK
Render
Cloudflare Pages
Cloudflare CDN
AWS S3
GitHub
GitHub Actions
What Success Looks Like
First 30 Days
Become fully familiar with the existing CRM, codebase, infrastructure, and business workflows.
Complete a technical audit of the existing platform.
Identify the highest-priority risks and remaining work.
Resolve immediate issues.
Create a clear plan for completing the platform.
By 60 Days
Complete or actively deliver the highest-priority CRM functionality against a clear plan.
Improve the reliability of core workflows.
Strengthen gaps in testing, security, documentation, monitoring, or deployment processes.
By 90 Days
Operate as the primary technical owner of the CRM.
Establish a stable release process and clear roadmap for future development.
Be positioned to begin supporting the internal licensing and onboarding system.
Begin supporting additional AI implementation projects across the business.
Opportunity
The Senior Full Stack AI Engineer will have the opportunity to become a key technical owner within the business, beginning with an advanced internal CRM and expanding into additional internal systems, including licensing, onboarding, agent training, and AI implementation projects.
Application Process
To be considered for this role these steps need to be followed:
Fill in the application form
Record a video showcasing your skill sets

Work arrangement
Yes