Senior Fullstack Engineer, PHP

Arbiter is the AI-powered care orchestration system that unites healthcare. Today, healthcare runs on $100B+ in fragmented point solutions that can't see the full picture. We replace them with a single intelligent system that sits on top of EMRs and existing workflows, unifies clinical, policy, and financial data, then automates the actions that close care gaps - starting with site-of-care optimization.

Backed by one of the largest seed rounds in health tech history and operators who bring the expertise and distribution to scale nationally, we're building the connected infrastructure healthcare should have had all along.

Our Engineering Culture & Values

We are a high-performing group of engineers dedicated to delivering innovative, high-quality solutions to our clients and business partners. We believe in:

• Engineering Excellence: Taking immense pride in our technical craft and the products we build, treating both with utmost respect and care.

• Impact-Driven Development: Firmly committed to engineering high-quality, fault-tolerant, and highly scalable systems that evolve seamlessly with business needs, minimizing disruption.

• Collaboration Over Ego: Valuing exceptional work and groundbreaking ideas above all else. We seek talented individuals who are accustomed to working in a fast-paced environment and are driven to ship often to achieve significant impact.

• Continuous Growth: Fostering an environment of continuous learning, mentorship, and professional development, where you can deepen your expertise and grow your career.

Responsibilities of the Senior Fullstack Engineer

• Fullstack Development: Design, develop, and implement highly scalable and reliable web applications and services using PHP, focusing on robust back-end logic, API development, and seamless front-end integration.

• System Architecture: Contribute to the architectural design of our distributed systems, ensuring scalability, performance, security, and maintainability across the entire platform.

• Database Management: Design, optimize, and manage complex relational databases (MySQL or PostgreSQL) using ORM frameworks like Doctrine, ensuring data integrity and efficient retrieval for mission-critical applications.

• Front-end Development: Build responsive, intuitive, and performant user interfaces using JavaScript, HTML, CSS, and Twig ensuring an exceptional user experience for clinical and administrative workflows.

• Deployment & Operations: Work with modern deployment tools and practices, including Kubernetes, to ensure continuous integration, delivery, and robust operational stability of our services.

• Cross-Functional Collaboration: Partner closely with product managers, data scientists, AI engineers, and other engineering teams to translate complex requirements into technical solutions and deliver features that drive the intelligent operating system.

• Technical Leadership: Provide technical guidance, mentorship, and conduct code reviews for junior engineers, championing best practices in coding, testing, and system design.

• Testing & Quality: Implement comprehensive unit, integration, and functional testing strategies to ensure the highest quality and reliability of all developed components.

• Hiring & Onboarding: Participate in interviewing and onboarding new team members, helping to grow a world-class engineering organization.

Minimum Qualifications

• 8+ years of deep, hands-on experience in fullstack software engineering, with a strong emphasis on PHP development in a large-scale, production environment.

• Excellent proficiency with PHP frameworks, especially Symfony, and ORM tools like Doctrine.

• Extensive experience with relational databases, specifically MySQL or PostgreSQL, including schema design, query optimization, and performance tuning.

• Strong expertise in building and operating applications within large distributed systems architectures.

• Demonstrated experience with container orchestration platforms, particularly Kubernetes.

• Exceptional proficiency with front-end technologies: JavaScript, HTML, and CSS (responsive design, cross-browser compatibility).

• Intimate knowledge of and ability to implement unit, integration, and functional testing strategies.

• Experience providing technical leadership and guidance, and thinking strategically and analytically to solve problems.

• Friendly communication skills and ability to work well in a diverse team setting.

• Demonstrated experience working with many cross-functional partners.

• Demonstrated experience leading a software product or component vision and delivery plan.

Preferred Qualifications

• Proficiency with modern JavaScript frameworks such as React, Next.js, or Stimulus.

• Experience working with large-scale, complex enterprise systems in highly regulated industries, such as healthcare or finance.

• Familiarity with cloud platforms (e.g., Google Cloud Platform, AWS) and associated services for scalable web applications.

• Experience with API design and development and performance optimization.

This role can be remote or on-site, based in our New York City or Boca Raton offices, in a fast-paced, collaborative environment where great ideas move quickly from whiteboard to production.

Job Benefits

We offer a comprehensive and competitive benefits package designed to support your well-being and professional growth:

• Highly Competitive Salary & Equity Package: Designed to rival top FAANG compensation, including meaningful equity.

• Generous Paid Time Off (PTO): To ensure a healthy work-life balance.

• Comprehensive Health, Vision, and Dental Insurance: Robust coverage for you and your family.

• Life and Disability Insurance: Providing financial security.

• Simple IRA Matching: To support your long-term financial goals.

• Professional Development Budget: Support for conferences, courses, and certifications to fuel your continuous learning.

• Wellness Programs: Initiatives to support your physical and mental health.

Pay Transparency

The annual base salary range for this position is $148,500-$190,000. Actual compensation offered to the successful candidate may vary from the posted hiring range based on work experience, skill level, and other factors.