Staff AppSec Engineer

Meet Upside:

We created Upside to transform brick-and-mortar commerce. Our technology uses the sophistication of online retail—profit measurement, attribution, and incrementality—to provide users with more value on their everyday purchases and brick-and-mortar businesses with new, profitable customers. We’ve helped millions of users earn 2 to 3 times more cashback than any other product, and hundreds of thousands of brick-and-mortar businesses earn measurable profit. Billions of dollars in commerce run through the Upside platform every year, and that value goes directly back to our retailer partners, the consumers they serve, and important sustainability initiatives.

The Impact You’ll Make:

You'll report to the Director of Information Security and partner closely with engineering and technology stakeholders across the organization. Drawing on your expertise in secure development practices and payment systems, you'll own the identification and remediation of application vulnerabilities end-to-end. This is an individual contributor role with real influence, you'll shape how our AppSec program evolves, raise the security bar across our engineering org, and make it easier for developers to build securely from the start.

- Leverage AI tools to design and deliver scalable security solutions that address application vulnerabilities

- Execute automated security testing (SAST, SCA) and work directly with engineers to resolve findings

- Develop threat models and collaborate with product and engineering teams to surface, document, and prioritize risk

- Advise leadership on security architecture decisions and application security best practices

- Build developer security literacy through training, enablement, and vulnerability management guidance

- Participate in penetration testing efforts and support bug bounty program operations

- Contribute to the administration of AWS Control Tower and IAM provisioning workflows

- Stay current with the broader secur...