Senior Software Development Engineer - Fullstack

Company Overview

is the next-generation digital identity wallet that simplifies how individuals securely prove their identity online. Consumers can verify their identity with  once and seamlessly login across websites without having to create a new login and verify their identity again. Over 152 million users experience streamlined login and identity verification with  at 20 federal agencies, 45 state government agencies, and 70+ healthcare organizations.

More than 600+ consumer brands use  to verify communities and user segments to honor service and build more authentic relationships. ’s technology meets the federal standards for consumer authentication set by the Commerce Department and is approved as a NIST 800-63-3 IAL2 / AAL2 credential service provider by the Kantara Initiative.  is committed to “No Identity Left Behind” to enable all people to have a secure digital identity.

To learn more, visit (Use the "Apply for this Job" box below)..

is a full-time, in-office culture. Unless a specific job description explicitly states otherwise, all roles are on-site five days per week at one of our offices in McLean, VA;
Mountain View, CA;
New York City, NY; or Tampa, FL. Certain roles — such as field-based sales or other remote-by-design positions — may have different work arrangements as noted in their individual postings.

At , we embrace the thoughtful use of AI tools in our daily work and there are even occasions where we leverage AI in our hiring process. However, during the interview process, we want to understand your individual skills and experiences. Therefore, we have guidelines on how AI can be appropriately used during your application and interviews which can be found here.

is seeking a Senior Fullstack Software Development Engineer to join the Person team. You'll design and build the systems that define who a person is on  — the canonical record of their identity, the APIs that serve it, and the unified experience where members see and manage it.

As a Senior Engineer, you will play a key role in architecting and scaling the Person platform to ensure it is secure, consistent, and performant across 's ecosystem. You'll partner with design to build the Person experience, and own the Backend for Frontend APIs and services that serve as the source of truth for personal data — working across teams to deliver systems that keep a person's identity accurate and consistent for millions of members and the partners who rely on them.

This position will be based full-time in either our McLean, VA or Mountain View, CA office.

• Technical Leadership:
  Own the design and implementation of significant areas of the Person platform — the canonical record of a person's identity and the rules governing how it is created, merged, and split. Author and implement UX architecture for the areas you own, contribute to design reviews across the team, and stay hands-on through implementation.
• Cross-Team Influence:
  Work closely with teams across  to understand how person data is consumed and embedded in their systems to solve real needs. Represent your areas in architectural forums and cross-team planning.
• Systems Design & Architecture:
  Design and Implement end-to-end of complex, high-impact features across the full stack — from the person data model and services, through Backend for Frontend, APIs, to the unified person experience members interact with.
• Engineering Excellence:
  Set the standard for code quality, testing, observability, and incident response. Drive technical debt reduction and platform reliability improvements. Mentor senior and mid-level engineers through code reviews, design critiques, and pairing.
• AI-Augmented Development:
  Model and champion AI-first engineering practices — leveraging tools like Claude Code to accelerate design, implementation, and review cycles — and help the broader team adopt these workflows effectively.

• Bachelor's or Master's degree in Computer Science, Engineering, or a related field (or equivalent experience).
• 7+ years of professional experience developing across the full stack in production environments.
• 7+ years of experience in at least one…