Senior Software Engineer, Medical Devices

SandboxAQ is a high-growth company delivering AI solutions that address some of the world's greatest challenges. The company’s Large Quantitative Models (LQMs) power advances in life sciences, financial services, navigation, cybersecurity, and other sectors.

We are a global team that is tech-focused and includes experts in AI, chemistry, cybersecurity, physics, mathematics, medicine, engineering, and other specialties. The company emerged from Alphabet Inc. as an independent, growth capital-backed company in 2022, funded by leading investors and supported by a braintrust of industry leaders.

At SandboxAQ, we’ve cultivated an environment that encourages creativity, collaboration, and impact. By investing deeply in our people, we’re building a thriving, global workforce poised to tackle the world's epic challenges. Join us to advance your career in pursuit of an inspiring mission, in a community of like-minded people who value entrepreneurialism, ownership, and transformative impact.

AQMed is developing a next-generation, non-invasive cardiac diagnostic platform designed to revolutionize how heart health is assessed. The team operates at the intersection of regulated medical device development and fast-paced startup innovation, with a strong emphasis on quality, scientific rigor, and patient safety.

We are seeking a Senior Staff Software Engineer to serve as the Technical Lead for our medical device software platform. In this role, you will own the software architecture that powers our device — from our fleet of devices in the field running Linux, to the cloud. Your architectural decisions will keep the platform safe, maintainable, and extensible as our product evolves.

You will be raising engineering standards and architecture quality, serving as the final technical authority for our regulated medical product.

System Architecture & Technical Strategy

• Own the Platform Architecture: Own technical integrity and cross-subsystem architecture for the end-to-end software stack. Establish and expand as needed a cloud data platform in a regulated environment, which stores data from in-field Linux-based cardiac scanning medical devices, parses the patient and device data, and serves ML pipelines on AWS infrastructure for downstream clinical software products..

• Product-Ready Foundation: Design clear and flexible interfaces such that our platform can evolve with our product roadmap without major refactors.

• Data Path Integrity: Design and maintain a HIPAA-compliant, production-grade data platform that ensures data confidentiality, integrity, and availability from the sensor to the cloud.

Execution & Quality Leadership

• Hands-on Engineering: This is a player-coach role. You will spend meaningful time writing code, reviewing complex PRs, and owning software correctness across interfaces from device to cloud to customer. You lead by doing, setting the standard for code quality and testing. You know what “good” looks like.

• Technical Mentorship: Mentor a growing team of senior and staff engineers, fostering a culture of technical excellence, rigorous review, and psychological safety.

• Drive Quality & Compliance: Lead the engineering team’s adherence to our quality system, including applicable medical device standards and regulations. You are the gatekeeper ensuring that design outputs (code) meet design inputs (requirements) and that our "move fast" culture never compromises patient safety and critical product functions. Scale strong engineering practices across the team, including design reviews, code review quality, test strategy and technical documentation

Cross-Functional Collaboration

• Cross-functional execution: Partner with Product, Clinical and Regulatory…