Sr. Full Stack Engineer

Sr. Full Stack Engineer

ENTER is a profitable, fast-growing AI healthcare fintech company on a mission to revolutionize Revenue Cycle Management (RCM). In the U.S., healthcare makes up nearly 20% of GDP, and providers spend 510% of their revenue just trying to collect money from insurance companies and patients. It's an outdated, painful, administrative mess.

We're here to change that. Our mission is bold : automate 1% of GDP by eliminating the manual, inefficient workflows that plague financial operations in healthcare. We're building modern systems to replace the legacy software and armies of billing staff that have been the norm for decades.

At ENTER, we believe better financial infrastructure means better healthcare. By using cutting-edge AI and automation, we empower healthcare providers to focus on what matters most : delivering exceptional care, not chasing payments.

We're a fully remote, US-based team of engineers, designers, and healthcare experts. We're curious, mission-driven, and product-obsessed. If you're excited about building transformative technology in one of the biggest and most broken industries, we'd love to meet you.

Location : Remote (US-based preferred)

Type : Full-time

About the Role

We're looking for a Senior Full-Stack Engineer to join our team and help build the next generation of healthcare infrastructure. You'll work across the stack to design and ship high-performance software that integrates with real-world clinical workflows, revenue cycle systems, and patient data pipelines.

This role is ideal for someone who thrives in product-oriented engineering, wants to own features end-to-end, and is passionate about solving meaningful problems in healthcare using cutting-edge technologies.

What You'll Do

Build high-performance frontend interfaces using React and TypeScript

Design and implement real-time, privacy-aware APIs and microservices in Java

Work with LLMs and third-party APIs to generate intelligent summaries and recommendations

Integrate with healthcare platforms (e.g. EMRs, PMs, clearinghouses) through APIs or user interfaces

Optimize for speed, reliability, and usability across a variety of workflows

Collaborate closely with product, design, and compliance teams to ensure our tools are secure, HIPAA-compliant, and delightful to use

You Have

2+ years of experience writing production Java (Spring Boot preferred)

5+ years of experience across the stack (frontend / backend / cloud)

Strong proficiency in React, TypeScript, and modern frontend tooling

Experience working with Redis, AWS infrastructure, and real-time APIs

Familiarity with LLMs, AI tooling, or interest in integrating smart agent workflows

A bias toward shipping fast, making pragmatic decisions, and iterating

A high degree of autonomy and ownershipyou're comfortable architecting, implementing, and scaling solutions from scratch

Bonus (but not required)

Experience with HIPAA-compliant systems, healthcare data, or clinical workflows

Previous work building internal tools, Chrome extensions, or productivity apps

Familiarity with observability tools like Sentry, PostHog, or Honeycomb

Startup or founder-like DNA

Why Join

Work on meaningful, real-world problems in healthcare that impact patients and providers every day

Join a small, fast-moving team where you'll have direct input into product and technical strategy

Competitive compensation + equity

Fully remote team with flexibility and high trust

A mission-driven company that combines AI, design, and healthcare infrastructure