Sr. Software Engineer, Identity Management & Authentication

The Role

We are seeking a Senior Software Engineer (Warsaw, Poland) with expertise in Java and frontend technologies to join our Identity and Authentication team. In this full-stack role, you will build and maintain the systems and interfaces that authenticate users and enable self-service product configuration.

You will leverage Addepar’s enterprise identity platform to create responsive, frictionless user journeys. These range from the “front door” of our products (such as login and MFA) to the administrative tools our customers use to configure experiences for their internal teams and end-clients.

Collaborating closely with product, design, and engineering partners, you will ensure our identity and authentication capabilities meet our clients' complex regional, compliance, and privacy needs. Ultimately, you will build the next generation of features that prepare Addepar for the demands of modern, AI-driven users.

Applicants must have legal authorization to work in the country where this role is based on the first day of employment. Visa sponsorship is not available for this position.

What You’ll Do

• Author, in Java APIs and web UIs, user and customer configuration tools which expose the capabilities of Addepar’s identity platform.
• Migrate Addepar’s authentication experiences to new platforms which support global availability, a smoother user experience, and experience customization.
• Bridge architectural, strategic identity investments with product-driven improvements to user experience.
• Provide expertise on authentication basics such as OAuth 2.0, Open ID Connect (OIDC, and SAML during the product design process.

Who You Are

• Extensive professional software engineering experience
• Bachelor's or Master's degree in Computer Science, Statistics, Mathematics, or other quantitative field, or equivalent practical experience
• Strong proficiency in Java, and/or a similar object oriented language with demonstrated ability to write high-quality, maintainable code
• Proficiency in building user experience on the web using TypeScript, PostCSS, Svelte, Ember, React, or equivalent experience
• Deep understanding of identity fundamentals, secure session management, and modern authentication/authorization protocols (OAuth 2.0, OpenID Connect, JWTs, SAML)
• Experience with SQL and database systems (both relational databases like MySQL/PostgreSQL and NoSQL systems like DynamoDB)
• Problem-solving skills with the ability to explore complex problem spaces objectively from multiple perspectives
• Excellent written and verbal communication skills, with experience collaborating across engineering and non-engineering teams
• Self-driven and comfortable working in a fast-paced environment where priorities can shift