Senior Backend Security and Identity Engineer

Role Overview

• Design, build, and improve identity and authentication infrastructure that balances user experience with regulatory requirements.
• Implement modern authentication solutions including passkeys, WebAuthn, and advanced multi-factor authentication mechanisms (2FA, OTP, biometrics).
• Build systems that enable continuous monitoring, compliance reporting, and forensic analysis for fraud prevention and regulatory teams.
• Collaborate closely with Product, Fraud Prevention, Compliance, and Regulatory teams to ensure security solutions meet business and legal requirements.
• Research, evaluate, and select third-party identity providers, security vendors, and authentication platforms.
• Architect and implement integrations with external identity and security solutions.
• Design systems that comply with financial regulations, ensuring strong customer authentication (SCA) and auditability.
• Develop and maintain technical documentation, security policies, and architecture decision records.
• Lead hiring, coaching, and development of team members as the team grows.

Requirements

• Bachelor's degree in Computer Science, Engineering, or equivalent practical experience.
• 5+ years of relevant work experience in backend engineering with deep expertise in identity, authentication, and security systems.
• Deep experience with at least one of these languages and strong familiarity with the other: JavaScript (node.js) or Golang.
• Proficient in authentication protocols and standards (OAuth2, OIDC, SAML, WebAuthn, FIDO2).
• Experience building and scaling identity platforms at fintech companies or security-focused engineering roles at scale.
• Understanding of risk-based authentication, fraud prevention patterns, and security controls in financial products.
• Knowledge of regulatory frameworks impacting authentication (e.g., PSD2, KYC/AML requirements).
• Proven ability to architect secure, auditable systems that balance user experience with compliance needs.
• Experience evaluating and integrating third-party identity and security vendors.
• Strong communication and organizational skills.
• Strong problem-solving skills.
• Ability to work under pressure.
• Team-oriented and collaborative.
• Interest and readiness to take on people management responsibilities as the team grows.

Tech Stack

• JavaScript
• Node.js
• Go

Benefits

• Annual bonus program based on individual, team and company performance.
• Home office stipend to support the setup of a productive home office.
• Generous PTO, healthcare coverage, and employee assistance programs.
• Interesting and fun events and celebrations.
• Foodie culture and well-stocked office kitchen.