Senior Software Engineer

Bold is the leading healthy aging platform, offering personalized, evidence-based exercise programs for Medicare members that help prevent falls, reduce musculoskeletal pain, and increase physical activity levels. Innovative Medicare plans rely on Bold to deliver engaging, clinically sound exercise programs that members love to use and that achieve significant health outcomes. Bold is backed by leading investors, including Rethink Impact, Andreessen Horowitz, and Khosla Ventures. Bold is looking for a Senior Software Engineer to join our LA team and play a key role in shaping our architecture, building features end-to-end, and driving the technical foundation that powers member engagement and helps us scale to our next stage of growth. As part of our mission-driven team, you’ll have the opportunity to impact the technical direction of the company while building experiences from the ground up that scale. You’ll work closely with an interdisciplinary group of teammates across technology, design, data, healthcare, and fitness—collaborating to evolve Bold’s design system and brand while delivering thoughtful, scalable software. This is a full time hybrid role located in LA and will report to the Engineering Manager. As a key member of our Engineering team, here’s what you’ll do: Key Outcomes: Build web and mobile features that meaningfully engage members, patients, physicians, and care teams. Partner with product, design, clinical, data science, and marketing teams to rapidly prototype, test, and launch high-impact initiatives (e.g., personalization of consumer programs, ML-driven care guidance). Integrate with healthcare software and physician workflows (EHRs, scheduling, clinical messaging) and develop data infrastructure to demonstrate clinical value and support research-grade analytics. Architect, deploy, monitor, and maintain scalable, reliable components in a HIPAA-compliant AWS environment. Drive platform improvements that accelerate impact and scalability while maintaining reliability. Foster a culture of learning and technical excellence through mentorship, code reviews, and best practices. Proactively evaluate and adopt emerging technologies to deliver a more engaging user experience. The most important skills for the role are*: 7+ years of experience building and scaling modern web applications on cloud infrastructure, and in particular have expertise with Javascript (ES6+) and React LA / Hybrid Work Environment: local to Los Angeles with 4 days a week in office Growth Mindset: Experience building consumer products from the ground up to scale, but are also eager to grow and develop their skill set Communication: Comfortable sharing and receiving feedback while communicating technical decisions to internal stakeholders Empathy : Cares about our older adult members. We want everyone on our team to learn from our users’ challenges and needs, and use that to tailor our product and development roadmap In addition to the above, it would be great if you also had: Experience in a fast paced startup environment and has supported team members in navigating ambiguity Experience working with healthcare data (HIPAA) *We know people from historically underrepresented communities are less likely to apply if they don’t meet all of the above criteria. Please apply anyway! We want people who are fast learners, eager to take on new challenges and will help us build a best in class company that will change what it means to age. Interested? Great! Here’s what you should know: At Bold we know that our people are indispensable to achieving our mission, and we are building an inclusive environment that enables everyone to do their best work . In that spirit, we deliberately hire people from all walks of life — including, but not limited to, race, gender identity, sexual orientation and disability status. If you’re motivated by our mission and eager to contribute to our team and culture, we’d love to hear from you. Compensation: We’re committed to an inclusive, consistent, and equitable approach to compensation and anticipate that this position will earn between $175k-220k annually. The exact salary will depend on the amount of relevant and transferable experience you bring to the role. You will also receive meaningful equity in the form of a stock option grant. Comprehensive health, dental, and vision insurance 12 weeks of paid parental leave Company-sponsored life insurance Unlimited PTO 401(K) after 6 months of employment Monthly fitness stipend One-time stipend for home office setup