Senior Full-Stack SaaS Engineer - Remote & Flexible Hours

United States Digital Space LLC; United States; Remote; USD 120,000 - 160,000; Part time

Job summary

United States Digital Space LLC is seeking an experienced full-stack software developer for a remote contract position to build a proprietary customer enrollment platform from the ground up. You will integrate DocuSign, enable secure magic-link signing, document management, and workflow automation, with GoHighLevel and Twilio integrations.

The role requires React/Next.js on the frontend, Node.js on the backend, REST APIs, PostgreSQL, and cloud hosting (AWS/Azure).

Qualifications

• Building SaaS applications.
• DocuSign API.
• React or Next.js.
• Node.js (or similar backend framework).
• REST APIs.
• PostgreSQL or similar databases.
• Secure authentication.
• AWS, Azure, or similar cloud platforms.
• File storage and document management.

Responsibilities

• Customer enrollment management
• DocuSign API integration
• Secure magic-link signing
• Internal document management
• Upload and organization of supporting documents
• Status tracking and reporting
• Third-party API integrations (GoHighLevel, Twilio, etc.)
• Secure database design and cloud hosting

Skills

SaaS application development

DocuSign API

React

Next.js

Node.js

REST APIs

PostgreSQL

Secure authentication

Cloud platforms (AWS/Azure)

Document management

Tools

GoHighLevel API

Twilio

Job description

United States Digital Space LLC is seeking an experienced full-stack software developer for a remote contract position to build a proprietary customer enrollment platform from the ground up. You will integrate DocuSign, enable secure magic-link signing, document management, and workflow automation, with GoHighLevel and Twilio integrations.

The role requires React/Next.js on the frontend, Node.js on the backend, REST APIs, PostgreSQL, and cloud hosting (AWS/Azure).