Senior JavaScript Developer – Healthcare SaaS Customization

Employment Type: Full time, independent contractor
Work Model: Remote
Work Hours: US work hours (Mountain Time)

Role Overview

We are seeking a strong, senior JavaScript developer to support and expand a highly customized implementation of a behavioral healthcare SaaS platform for one dedicated enterprise client.

This role is focused exclusively on a single enterprise environment within the company — an EHR and rapid development platform with a proprietary JavaScript-like language. The engagement is ongoing and mission-critical, with a steady backlog of enhancements, workflow optimizations, and feature expansion.

You will work directly with the founder, who remains client-facing and provides detailed functional specifications. Your responsibility is to independently design, build, test, and ship production-ready code in a healthcare environment where precision, reliability, and data integrity are essential.

Why This Role Exists

The founder currently handles all development personally. As client demand continues to grow, there is a clear need for:

Greater development throughput
Faster feature releases
Improved workflow automation
Continued system scalability
Reduced delivery bottlenecks

This hire will become a long-term technical pillar within the consultancy.

Key Responsibilities

Support and expand a custom implementation for a single enterprise behavioral health client
Enhance system features and improve operational workflows
Build new front-end components using HTML, CSS, and vanilla JavaScript (ES6+)
Write clean, maintainable, production-ready JavaScript
Manage complex relational data structures within the platform
Handle dynamic data transformations (arrays, nested objects, mapping, filtering, reshaping data)
Implement accurate date logic and time-based workflows
Ensure data integrity and accuracy in a regulated healthcare environment
Thoroughly test functionality before release
Work independently with minimal supervision after onboarding

Technical Requirements

Core Requirements (Must-Have)

4–8+ years of professional JavaScript development experience
Deep proficiency with vanilla JavaScript (ES6+) without heavy reliance on frameworks
Strong understanding of:
- Arrays and nested objects
- Mapping and transforming data
- Dynamic data handling
- Date logic and calculations
- Clean UI rendering without React, Vue, or Angular dependence
Ability to build maintainable front-end components using HTML, CSS, and JavaScript
Experience shipping production-ready code in live environments
Strong debugging and troubleshooting skills
Ability to quickly learn and ramp up on proprietary platforms

Highly Preferred

Experience working within SaaS platforms
Exposure to healthcare, EHR, or HIPAA-adjacent systems
Experience with financial or operational systems
Familiarity with secure data environments
Experience customizing enterprise platforms (Salesforce-style admin/developer work)

Ideal Candidate Profile

The ideal candidate is highly detail-oriented, independent, and comfortable owning projects end-to-end.

They are:

Self-directed and able to work autonomously
Highly detail-oriented when working with sensitive healthcare data
Comfortable ramping quickly with minimal onboarding
Strong in written and verbal English communication
Calm, methodical, and precise in high-responsibility environments

Because the founder is not a formally trained engineer and has limited capacity for technical onboarding, seniority and autonomy are essential for success in this role.

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