Senior Software Engineer, Amazon Access

Amazon is building technology that makes a meaningful difference in people's lives. Amazon Access is addressing one of healthcare's most enduring challenges: connecting millions of Americans to the benefits they are entitled to, but struggle to access. We are building the systems that eliminate that gap.

As a Software Development Engineer III on this team, you will play a critical role in designing and building greenfield infrastructure at Amazon scale. You will own architectural decisions across real-time distributed systems, machine learning–powered eligibility engines, and AI-driven personalization platforms. This is a high-impact, high-ownership role where your foundational technical choices will shape a product serving millions of transactions and delivering tangible value to people who need it most.

We are looking for engineers who excel in ambiguous environments, take end-to-end ownership, and are motivated by seeing the direct impact of their work. If you are energized by complex problems at the intersection of healthcare, fintech, and large-scale distributed systems - and want to build something transformative from the ground up, we want to hear from you.

What We're Looking For •Engineers who thrive in ambiguity and architect systems with long-term scalability in mind •Builders who ship early, iterate fast, and hold themselves to a high bar •Individuals who want to do some of the most impactful and formative work of their career

Key job responsibilities Team Building & Engineering Culture •Contribute to building the engineering team from the ground up, including hiring, onboarding, and establishing a high bar for technical talent •Help shape the team's engineering culture: how decisions are made, how collaboration happens, and what standards define excellence •Establish engineering norms, rituals, and a culture of ownership from inception •Partner with principal engineers, product leaders, and applied scientists to bring high-impact initiatives, models, and experimentation frameworks to production •Foster a learning environment through knowledge sharing, mentorship, and engineering best practices

System Design & Architecture •Design and build scalable, highly available services for healthcare benefits at Amazon scale •Develop ML-integrated systems with intelligent matching, personalization, and optimization capabilities that improve over time •Write high-quality, well-tested production code and actively participate in design and code reviews •Build data pipelines that process large-scale healthcare benefits signals •Apply engineering best practices including back testing, offline evaluation, and rigorous experiment design to measure real-world impact

Operational Excellence •Own systems end-to-end: design, development, testing, deployment, monitoring, and on-call support •Build robust observability — metrics, alarms, and dashboards that surface system health in real time •Participate in on-call rotations and drive root-cause analysis for production issues •Design for resilience: implement graceful degradation, circuit breakers, and fallback strategies for mission-critical services