Sr. Infrastructure Security Engineer

We're looking for a Senior Infrastructure Security Engineer with a strong focus on cloud security, particularly within Google Cloud Platform (GCP). The ideal candidate should have in-depth expertise in endpoint and data security in cloud environments, using GCP tools and technologies. As a vital member of our security team, you'll work across functions to proactively prevent, detect, and respond to threats against our cloud-based infrastructure. Join our expanding team of skilled security professionals dedicated to innovating and securing Prosper's cloud platforms, utilizing state-of-the-art security tools for the benefit of our customers and employees.

Responsibilities

• Own cloud security across Google Cloud Platform (GCP) and Microsoft Azure, driving initiatives from design through execution
• Reduce real risk by operationalizing CNAPP tooling like Wiz - cutting noise, prioritizing high-impact issues, and ensuring remediation lands
• Embed security into infrastructure using Terraform and CI/CD, making controls scalable, consistent, and developer-friendly
• Lead vulnerability management end-to-end, from triage to remediation tracking, partnering with engineering to ship fixes quickly
• Strengthen data and endpoint security (DLP, EDR, identity, device posture) and reduce exposure across cloud environments
• Improve detection and response by building and tuning detections in Google Chronicle and supporting incident response
• Proactively identify and fix cloud misconfigurations (IAM, networking, firewalls, encryption) before they become incidents
• Define practical security standards and runbooks that engineers can easily adopt
• Act as a senior escalation point during security incidents, driving effective triage and resolution
• Leverage AI tools responsibly to accelerate code review, triage, and security analysis while maintaining strong security guardrails
• Mentor engineers and raise the overall security bar through collaboration and clear risk communication

Requirements

• Bachelor’s degree in Computer Science, Information Security, or related field, with 8+ years of relevant experience OR Master’s degree with 6+ years experience
• Strong hands-on experience securing cloud environments in GCP and/or Azure
• Deep understanding of cloud fundamentals: IAM, networking, logging, monitoring, and encryption
• Proven ability to identify real risk vs. noise using CNAPP tools like Wiz
• Experience with Terraform and security-as-code, including CI/CD integrations
• Solid vulnerability management experience, including prioritization and driving remediation with engineering teams
• Knowledge of data security (DLP, sensitive data discovery) and endpoint/identity platforms (Okta, MDM, Google Workspace)
• Experience with SIEM tools like Chronicle, including detection engineering and incident support
• Strong scripting/automation skills (e.g., Python) to reduce manual security work
• Comfortable owning projects end-to-end in a highly collaborative environment
• Strong familiarity with AI agents and tools, aligned with Prosper Tech's "forward-thinking but safe" approach to AI adoption
• Understanding of common cloud attack paths and how security failures occur in real environments
• Strong collaboration and communication skills, with the ability to explain risk clearly and drive practical, scalable fixes across cross-functional teams

Benefits

• A connected experience: High-touch collaboration and flexibility, whether working from our San Francisco or Phoenix offices or fully remote, with digital-first tools and intentional culture
• Invested in your future: Competitive salary and a 401(k) with a 5% company match
• Holistic well-being: Flexible time off, paid parental leave, annual wellness allowance, and comprehensive health coverage
• Professional & personal growth: Udemy access, childcare assistance, pet insurance, and additional savings through Beneplace

Pay

The salary for this position is $180,000 - $200,000 annually, plus bonus and generous benefits.

About Us

Prosper introduced U.S. consumers to an innovative approach to personal finance as the first peer-to-peer lending platform in the country. Since 2005, Prosper has helped over 2 million customers achieve financial well-being through a comprehensive suite of digital personal finance products. Prosper’s flagship personal loan marketplace continues to offer unique value for both borrowers and investors, while the Prosper® Card provides essential access to credit and flexibility for those managing their financial journey. Guided by its mission to advance financial well-being, Prosper is dedicated to helping people thrive by meeting people where they are with simple, trusted, and affordable financial solutions.

We’re on a mission to hire the very best, and we are committed to creating exceptional employee experiences where everyone is respected and has access to equal opportunity. Our values include:

• Diversity expands opportunities
• Collaboration creates better solutions
• Curiosity fuels our innovation
• Integrity defines all our relationships
• Excellence leads to longevity
• Simplicity guides our user experience
• Accountability at all levels drives results