Senior Security Engineer, Identity & Access Management

ABOUT THE COMPANY

The company is the leading AI platform for mortgage servicing, building the AI-native operating system for regulated finance.

Before providing the system of record that powers the entire industry, we built and ran our own mortgage servicer on it. That gave us a real regulated environment to prove our technology could replace the mainframe systems servicers have used for decades. Carrington acquired that servicer and adopted the companyOS as its core platform, allowing us to focus entirely on scaling our SaaS platform.

The companyOS is now on track to power 1 in 6 U.S. mortgages across major mortgage servicers like Newrez, Carrington, and ServiceMac. Every process on the platform is structured and programmable, enabling our AI agents to perform core servicing work, like handling payments, escrow, and homeowner questions, directly within the system's controls.

We recently raised a $150 million Series D at a $2.3 billion valuation by new investor Ribbit Capital, with continued support from existing backer a16z, amongst others.

SECURITY AT the company

Our customers entrust us with some of their most sensitive and personal financial information, and it is the ultimate mission of the company’s Security team to ensure we have sound programs, processes, and automation in place to safeguard our customers’ data. The Security team protects the infrastructure and data for processing billions of dollars of mortgage loans.

In addition to protecting the company’s internal systems, the Security team partners closely with Product and Engineering to design and deliver secure, scalable, and trustworthy capabilities for the companyOS. As AI becomes central to how the company builds and operates, our team is responsible for securing AI-powered systems and pipelines while also leveraging AI tools to optimize security and defense capabilities. We work cross-functionally across all teams at the company to enable security throughout the organization. We engage with external security auditors, pentesting firms, and partners to continuously evaluate the company’s security posture.

The company offices are located in New York City and San Francisco, but we fully support remote work!

ABOUT THE ROLE

We are seeking a skilled and experienced Senior Security Engineer, Identity & Access Management to join our team. In this role, you'll own the design, implementation, and operation of IAM systems for the company’s enterprise identity stack that powers the company's workforce, and support security for customer-facing authentication and authorization capabilities embedded in the companyOS. You'll be the connective tissue between IT, Engineering, and Security — ensuring every identity, human or machine, is governed consistently and securely.

RESPONSIBILITIES

• Design and support end-to-end lifecycle of workforce identity systems including identity automation, access management, and least-privilege enforcement across internal systems

• Support design of secure identity design patterns for product teams building on the companyOS

• Manage and evolve the company's IdP in conjunction with IT including SSO integrations, MFA policies, conditional access rules, and directory synchronization

• Define and enforce RBAC and group-based access policies for internal applications, cloud environments, and development tooling

• Support privileged access management (PAM) for internal infrastructure in conjunction with Engineering teams

• Design and build AI-assisted workflows that automate and accelerate core IAM operations

• Evaluate AI risks across IAM pipelines, ensuring appropriate security controls around data exposure, prompt injection and other threats

• Collaborate with Product, Engineering, Data, Compliance, Legal, and other teams to identify and drive mitigation for data security risks

• Support other operational and on-call duties such as vulnerability management, regulatory compliance (SOC 2, CCPA, NYDFS, FTC), policy development, incident response and security reviews.

IDEAL BACKGROUND

• Extensive hands-on IAM security engineer with proven ownership of enterprise identity solutions, able to operate autonomously, drive complex cross-functional efforts, and influence across teams

• Deep expertise in modern identity protocols and standards: SAML 2.0, OIDC/OAuth 2.0, SCIM, LDAP, and related specifications

• Proven experience administering and scaling IdP platforms (e.g., Okta, Azure AD / Entra ID, Google Workspace) including SSO, MFA, conditional access, and directory sync

• Solid background in cloud IAM (GCP preferred), including service accounts, workload identity federation, and policy-as-code approaches

• Strong expertise in building PAM solutions / identity vaults and enforcing least-privilege across human and non-human identities

• Experience building AI/LLM-powered workflows — ideally in a security or operations context — with a practical understanding of the identity and access risks they introduce

• Familiarity with securing non-human and agentic identities, including AI service accounts, API key governance, and audit logging for automated systems

• Applied knowledge with industry security and compliance frameworks (OWASP, NIST, CIS, SOC 2/ISO 27001 concepts)

• Excellent communication and collaboration skills, including the ability to explain complex security concepts to both technical and non-technical stakeholders.

• Experience working in high-growth or startup environments is a plus.

MINIMUM QUALIFICATIONS

• 5+ years in security engineering roles with a core focus on identity and access management

• Bachelor's degree in Information Security, Computer Science, Technology or related field

• Relevant security certifications (e.g., CISSP, CISM, CCSK, CCSP or similar)

• Hands-on experience with an enterprise IdP (Okta, Entra ID, or Google Workspace) including SSO, MFA, SCIM

• Deep understanding of authentication and authorization models across applications - SAML, OIDC/OAuth 2.0, RBAC, ABAC, and API access controls

• Hands-on experience with modern identity security technologies and tooling

BENEFITS

• Compensation: competitive salary with a meaningful stake in the company via equity, and 401(k) plan. The base salary range reflects multiple levels. We assess level based on a combination of experience and interview performance.

• Health & well-being: we’ll invest in your physical and mental well-being with comprehensive medical, dental, & vision benefits.

• Free Food: daily lunch, and dinner provided through Forkable for in-office team members.

• Commuter benefits: pre-tax deductions for public transit, rideshares, and parking to simplify your daily commute.

• Grow together: company wide orientation for you to successfully onboard and other learning & development opportunities including regular review cycles that feature 360-degree feedback.

• Play together: quarterly budgets for team and company outings. Use it for team swag, cooking classes, or team dinners.

• Generous time off: flexible paid time off with no annual limit, sick days, and 11 company holidays.

• Baby bonding time: 12 weeks of fully paid leave for both birthing and non-birthing parents, so you can spend uninterrupted time welcoming and caring for your newest family member.

Throughout the interview process, please remember that emails will only be from the company.com [link for members] email addresses. We will never ask for any personally identifiable information during the interview process itself. Please reach out to [link for members] if you have any requests to verify the authenticity of an outreach.

The company is an equal opportunity employer that is committed to diversity and inclusion in the workplace. We prohibit discrimination and harassment of any kind based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic as outlined by federal, state, or local laws. The company makes hiring decisions based solely on qualifications, merit, and business needs at the time.