Authentication Engineer

Job Overview

toptal. com/ Summary We are the next-generation digital identity wallet that simplifies how individuals securely prove their identity online.

Consumers can verify their identity with us once and seamlessly log in across websites without needing to create a new login and re-verify.

Job Description

Key Responsibilities Build & Ship Authentication Features: Build, maintain, and improve the ID. me Wallet authentication experience - sign-in, registration, MFA, account recovery, password reset, and MyWallet.

Independently drive small-to-medium features end-to-end from design through deployment, collaborating closely with Product, Design, and Security to translate requirements into well-tested, production-ready code.

Apply security best practices as a first-class concern in every feature you ship, and help raise the bar for authentication reliability, observability, and incident response across the team's services.

Code Quality & Engineering Craft: Write high-quality, maintainable code with strong test coverage, following team best practices around code reviews, CI/CD, and documentation.

Key Responsibilities

• Over 140 million users experience streamlined login and identity verification with us at 20 federal agencies and 44 state agencies General Information Onsite Location: Mountain View, CA OR McLean, VA (Onsite 5 days per week) We are seeking a Software Engineer to join the Wallet - Authentication team, where we build the core sign-in, registration, and account management experiences that over 140 million members rely on to access the our identity wallet.
• As a Software Engineer III, you will work end-to-end across our authentication stack - building features that balance security, usability, and trust at scale.
• Key Responsibilities Build & Ship Authentication Features: Build, maintain, and improve the ID.me Wallet authentication experience - sign-in, registration, MFA, account recovery, password reset, and MyWallet.
• Third-Party & Internal Integrations: Integrate with MFA providers, email/SMS delivery services, internal identity services, and downstream relying parties.
• Cross-Functional Collaboration: Partner with Product, Design, Security, Identity, and adjacent engineering teams to deliver cohesive auth experiences.
• Experience building or contributing to fraud detection, real-time risk engines, or abuse mitigation systems.
• Proficiency in a modern server-side web framework (e.g., Ruby on Rails, Django, Laravel), with hands-on experience building and operating production web applications.
• Familiarity with security best practices for credential handling - password storage, session management, token issuance, and rate limiting.

Required Skills and Qualifications

• Over 140 million users experience streamlined login and identity verification with us at 20 federal agencies and 44 state agencies General Information Onsite Location: Mountain View, CA OR McLean, VA (Onsite 5 days per week) We are seeking a Software Engineer to join the Wallet - Authentication team, where we build the core sign-in, registration, and account management experiences that over 140 million members rely on to access the our identity wallet.
• Your work will sit at the intersection of identity, security, and consumer experience, directly shaping how millions of people prove and access who they are online.
• Key Responsibilities Build & Ship Authentication Features: Build, maintain, and improve the ID.me Wallet authentication experience - sign-in, registration, MFA, account recovery, password reset, and MyWallet.
• Security, Risk & Reliability: Own and evolve the team's real-time risk engine and its integration across authentication flows - detecting and mitigating credential attacks, account takeover, and abuse while preserving a low-friction experience for legitimate members.
• Cross-Functional Collaboration: Partner with Product, Design, Security, Identity, and adjacent engineering teams to deliver cohesive auth experiences.
• Requirements Required Experience Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
• 3+ years of professional software development experience with a strong emphasis on full-stack web engineering.
• Experience with authentication and identity standards such as OAuth2, OpenID Connect, SAML, or FIDO2/WebAuthn.

Work Location and Schedule

This role is listed as Remote USA with location information shown as Remote USA. The employment type is Full Time.

About the Company

Toptal is the organization connected with this listing. USA Jobs Today displays this opportunity for job discovery only, so applicants should verify company details, application instructions, and eligibility on the official employer website.