Backend Engineer • Senior

Who you are

You have 5+ years of backend engineering experience building production systems at scale — you've owned services from design through deployment and have navigated the complexities of debugging distributed systems. Your expertise in Java and Spring is deep — you've shipped high-throughput APIs that handle millions of requests and have strong opinions on service architecture and testing strategies. You thrive in collaborative environments, working closely with product managers and designers to solve challenging problems. You understand the importance of writing maintainable code and are committed to applying best practices in your work. You are proactive in seeking out opportunities to improve technology and processes within your team. You care about the impact of your work on users and are motivated by the mission of making healthcare easier for members and providers.

Desirable

Experience with cloud platforms like AWS or Azure would be a plus, as would familiarity with microservices architecture. If you have a background in health tech or insurance, that would be beneficial but not required. You are open to mentoring junior engineers and sharing your knowledge with the team.

What you'll do

As a Senior Backend Engineer at Oscar, you will lead the planning, execution, and release of complex technical projects. You will become the expert on your team's business and technical domains, ensuring that the applications you build are reliable and maintainable. You will collaborate with other engineers to improve technology and apply best practices, contributing to the overall success of the engineering team. Your role will involve designing and implementing APIs that facilitate interactions between members and the healthcare system. You will also participate in code reviews and provide feedback to your peers, fostering a culture of continuous improvement. You will work in a hybrid environment, with three days in the office each week, including a mandatory in-office day for team meetings and events. This structure allows you to build strong relationships with your colleagues while also enjoying flexibility in your work schedule.

What we offer

Oscar offers a competitive salary range of $158,400 - $207,900 per year, along with a comprehensive benefits package that includes participation in an unlimited vacation program and company equity grants. You will be part of a mission-driven company that is transforming the health insurance industry through technology. The culture at Oscar emphasizes collaboration, innovation, and a commitment to serving our members. You will have the opportunity to work on meaningful projects that directly impact the lives of our users, making healthcare more accessible and efficient. We encourage you to apply even if your experience doesn't match every requirement — we value diverse perspectives and backgrounds.