Senior Software Engineer, Full Stack (Revenue Engine)

Why Charlie Health? Millions of people across the country are navigating mental health conditions, substance use disorders, and eating disorders, but too often, they’re met with barriers to care. From limited local options and long wait times to treatment that lacks personalization, behavioral healthcare can leave people feeling unseen and unsupported. Charlie Health exists to change that. Our mission is to connect the world to life-saving behavioral health treatment. We deliver personalized, virtual care rooted in connection—between clients and clinicians, care teams, loved ones, and the communities that support them. By focusing on people with complex needs, we’re expanding access to meaningful care and driving better outcomes from the comfort of home. As a rapidly growing organization, we're reaching more communities every day and building a team that’s redefining what behavioral health treatment can look like. If you're ready to use your skills to drive lasting change and help more people access the care they deserve, we’d love to meet you. About the Role Charlie Health leads the nation in high-acuity virtual behavioral care, having delivered life-saving treatment to more than 100,000 clients nationwide. Our Revenue Engine team builds the technology that powers a seamless financial experience for patients and ensures the business can grow to reach more people who need care. You'll work across two high-impact surfaces: patient-facing tools that give clients a clear, transparent view of their finances and the ability to manage their payments with confidence, and internal products that streamline how our revenue operations teams work — making insurance billing and revenue collection faster, smarter, and more scalable. For our highest-acuity patients, financial clarity is a critical aspect of their care experience. And for the business, operational excellence in revenue collection is what makes expanding access possible. If you're curious about the patient and stakeholder experience, love owning products end to end, and want to move fast on work that is both highly visible and has a clear impact, this is the team for you. Responsibilities Develop and deliver high quality, performant, maintainable features that drive meaningful business value using our core technology stack: React, Python, and PostgreSQL Set strong patterns for our growing team to follow, supported by modern AI tools to develop quickly at scale Partner with teammates across the organization to understand our business. Leverage that understanding to drive data modeling discussions and decisions Be an owner. Collaborate with product and design to iterate to top notch product solutions Identify bottlenecks and implement improvements to engineering processes, tools, and procedures. We’re early and the expectation of folks joining at this stage is that you’ll play a huge part in setting and improving how we work Promote a culture of collaboration and learning across engineering, product, and design team via mentoring, documentation, presentations, or other knowledge sharing methods Ensure our clients can always access the care they need by participating in our on-call rotation Requirements 4+ years of professional experience developing user facing web applications that deliver meaningful business value Expertise and hands on production experience with an application programming language, preferably Python and/or Javascript Excellent at managing ambiguity. Masterful ability to break down big, messy problems (demanding requirements, bugs, etc) into smaller parts with tractable solutions and clear iterations Meaningful scope within an application engineering team. Experience making or contributing to important technical tradeoff decisions with cross team implications Experience developing high quality code leveraging modern AI tooling (ex: using Claude Code) Growth mindset and a sense of humor. You welcome feedback and when you stumble you get back up. You adapt quickl