Staff AppSec Engineer

Upside

Staff AppSec Engineer at Upside leveraging AI for scalable security solutions. Responsible for application vulnerability management and security literacy across development teams.

Posted 6/23/2026full-timeWashington, D.C. • District of Columbia, Washington • 🇺🇸 United StatesLead💰 $210,000 - $230,000 per yearWebsite

Tech Stack

Tools & technologies

AWSPython

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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

Benefits

Comp & perks

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!

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

application securityvulnerability managementautomated security testingSASTSCAthreat modelingPythonAWS security architectureLambdapenetration testing

Soft Skills

communicationcollaborationleadershiptrainingenablementsecurity literacyadvisingproblem-solvingrisk prioritizationdocumentation