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 security community and bring emerging trends back to the team What You Should Have: - 6+ years in application security or product security, including hands-on experience reviewing Python code - A track record of building and delivering solutions in vulnerability management programs - Deep expertise in AWS security architecture, including Lambda and AWS Control Tower - Demonstrated experience adopting and integrating AI tools into security or engineering workflows - Bachelor's degree in Computer Science, Engineering, or a related field preferred - Strong communication and collaboration skills — you're as comfortable with engineers as you are with leadership Tools We Use: - GitHub Advanced Security, GitHub Actions, GitHub Copilot - Python - Terraform - AWS (Lambda, DynamoDB, S3, SNS, SQS, IAM, VPCs) - ChatGPT - Snowflake - SQL Location: Remote Compensation: The US base salary range for this full-time position is $210,000 - $230,000 + equity + benefits. The final starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. Your recruiter can share more about the specific salary range during the hiring process. Benefits: - Medical, dental, and vision coverage starting on Day 1 - Equity (ISOs) - 401(k) program - Family planning programs + paid parental leave - Physical fitness and wellness memberships - Emotional and mental health support programs - Unlimited PTO + 10 paid federal holidays + our annual, week-long Winter Break - Flexible work environment - Lunch reimbursement for in-office employees - Employee Resource Groups - Learning and Development stipend - Transparent culture - Amazing mission! Diversity and Inclusion: Diversity drives innovation, and our differences make us stronger. We‘re passionate about building a workplace that represents a variety of backgrounds, skills, and perspectives, and we do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran stat