Senior Software Engineer (Frontend Leaning)

About the Role
We're looking for a senior frontend leaning engineer to help scale Marble's care delivery platform for youth mental health. This is a high-impact role for someone who combines deep technical frontend experience with a strong product mindset and a passion for building intuitive, elegant experiences for users who need them most.
You'll be a technical leader focused on frontend platform architecture, user-centric product development, and engineering quality. You'll own key product experiences across schools, families, and therapists - helping shape how we serve the central stakeholders in youth mental health.
What You'll Do
Build beautiful, accessible, and performant full stack products

• You'll be a core contributor to all of Marble's product surfaces:
  • Tools for school counselors who are underserved and overburdened
  • Interfaces for students and families navigating care
  • Workflows for therapists providing that care

Lead frontend platform and architecture decisions

• You'll help evolve our frontend infrastructure, including optimizing bundling and performance, shaping our design system, improving developer experience, and improving our use of React, Next.js, etc.

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 product partner and user advocate

• Work closely with our growth and ops teams to deeply understand user needs and translate them into great experiences. Develop a strong sense of empathy for our diverse stakeholders.

Qualifications
Requirements

• 6+ years of frontend engineering experience
• Deep expertise with React and strong experience with the Node.js ecosystem
• Experience with frontend infrastructure, DevX & tooling (e.g. bundling, app performance, monitoring, etc.)
• NYC-based and able to work from our SoHo office 2+ days/week

Bonus

• Prior startup or early-stage experience is strongly preferred, but not required
• Prior experience in the healthtech space
• Strong full stack experience
• Experience with Next.js
• An eye for design and experience working closely with design systems

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.