Senior Software Engineer (Backend Leaning)

About the Role
We're looking for a senior backend leaning engineer to help scale Marble's care delivery platform for youth mental health. This is a critical role for someone excited to build the infrastructure, systems, and processes that power everything from billing to therapist workflows - while helping us scale responsibly and sustainably.
You'll be a technical leader focused on our revenue cycle management (RCM) systems, platform architecture, and backend engineering excellence. You'll own a high-leverage surface area that directly impacts our ability to grow, and help build a world-class engineering culture from the ground up.
What You'll Do
Own and evolve Marble's RCM / billing systems

• Build and maintain the systems that ensure Marble gets paid. This includes everything from payer integrations to claims submission, reimbursement flows, and reporting. RCM is a core pillar of our business, and you'll own it end-to-end.

Build core platform infrastructure

• As we move from a single monolith to a more scalable architecture, you'll help lead the design and implementation of our platform foundation-including event-driven systems, internal tooling, data pipelines, and DevX / infra improvements.

Up-level engineering standards and provide mentorship

• Be a senior voice on the team. Mentor engineers, set the standard for clean, maintainable code and champion best practices. Mentor teammates and help grow a strong, thoughtful engineering culture.

Be a cross-functional partner

• Collaborate closely with product, operations, and clinical teams to ensure our systems support real-world needs-and that we build with empathy for the humans using our tools.

Qualifications
Requirements

• 6+ years of backend or platform engineering experience
• Deep expertise in building reliable, scalable backend systems
• Hands on experience with CI/CD pipelines & IaC tooling (such as Terraform, AWS CDK, etc.)
• NYC based & able to come into our SOHO office 2+ days a week

Bonus

• Prior startup or early-stage experience is strongly preferred, but not required
• Prior experience in the healthtech space
• Strong full stack experience
• Expertise with the Node.js ecosystem

Marble Traits
Relentless Drive

• You're the hardest worker in the room who takes full responsibility for outcomes and tackles any task, no matter how small.

Introspective Team Player

• You invest in relationships and team morale while actively seeking feedback and self-evaluating to continuously improve.

Operationally Excellent

• You communicate clearly, think logically, and execute efficiently & effectively.

Role Traits
Detective - Problem Solving

• You get to the root of problems. You follow the trail, ask sharp questions, use every resource available, and don't stop until you're confident it's truly solved.

♟ Chess Master - Analytical Thinking

• You focus on high-impact initiatives and say "no" to distractions. This includes balancing short-term wins with long-term vision, making tough trade-off decisions with limited resources, and maintaining focus on what truly matters.

Chameleon - Adaptability

• You move seamlessly between priorities, technologies, parts of the stack, from low-level implementation to high-level strategy - without missing a beat.

Teacher - Collaboration & Mentorship

• You bring others with you. You share context, give thoughtful feedback, and raise the bar for the whole team.