Principal Frontend Engineer
X4 Life Sciences
leadpermanentfrontend United States Today via LinkedIn
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ReactNext.jsGraphQLApollo ClientSaaSMulti-tenantHealthcareRegulated SoftwareFrontend ArchitectureCode Quality
About the role
Principal Frontend Engineer (Healthtech SaaS)
Join a product and engineering team building modern, compliant, and scalable healthcare software for regulated, multi-tenant environments.
Role overview
- Work in a fast-paced, product-led environment on a multi-tenant SaaS platform in healthtech.
- Drive engineering efficiency by reducing PR rework, improving frontend architecture consistency, and strengthening code quality.
- Own features end-to-end and work autonomously from design through delivery.
Responsibilities
- Build and maintain scalable frontend applications using React and Next.js.
- Design clean, maintainable UI architecture with strong separation of concerns.
- Contribute to frontend system design and establish/maintain engineering standards.
- Work with GraphQL data layers using Apollo Client.
- Improve consistency and reduce PR rework across the frontend codebase.
- Collaborate with engineers to raise overall code quality and design maturity.
Requirements
- 8+ years of professional software engineering experience.
- Strong, production-proven expertise in React and Next.js.
- Proven ability to design and structure frontend applications (not just implement features).
- Experience in SaaS, product-led, or platform engineering environments.
- Strong communication skills and ability to proactively clarify requirements.
- Ownership mindset focused on clarity and reducing downstream rework.
Nice to have
- Vue.js experience.
- Apollo Client and GraphQL.
- Experience with Pinia or similar state management patterns.
- Background in healthtech, telehealth, or other regulated SaaS.
What success looks like
- Well-structured PRs requiring only light review.
- Minimal architectural rework after submission.
- Strong upfront design thinking before implementation.
- Consistent improvement in frontend engineering standards.
About X4 Life Sciences
X4 Life Sciences partners with technology and healthcare organizations to support hiring for roles in digital health and healthtech software teams. The engagement centers on building modern, compliant, and scalable healthcare products in regulated environments.
Scraped 5/16/2026