Senior Identity & Authentication Engineer — Java & UI

Addepar; Warszawa; On-site; PLN 310,000 - 372,000; Full time

Job summary

Addepar, a global data and AI platform, is seeking a Senior Software Engineer in Warsaw to build and maintain systems that authenticate users and enable self-service configuration. You will work on the identity platform across login, MFA, and admin tools used by client teams and end-clients.

Collaborate with product, design, and engineering to ensure compliance, regional privacy, and a smooth user experience.

Qualifications

• Extensive professional software engineering experience.
• Bachelor's or Master's degree in CS, statistics, mathematics, or related field, or equivalent practical experience.
• Strong proficiency in Java and ability to write high-quality, maintainable code.
• Proficiency in building web UX using TypeScript and modern frameworks (React, Svelte, Ember).
• Deep understanding of identity, secure session management, and modern auth protocols (OAuth 2.0, OpenID Connect, JWTs, SAML).
• Experience with relational and NoSQL databases such as MySQL, PostgreSQL, DynamoDB.

Responsibilities

• Author Java APIs and web UIs for identity features.
• Migrate authentication experiences to scalable platforms with global availability.
• Bridge identity investments with product-driven UX improvements.
• Provide expertise on authentication basics and security considerations.

Skills

Java

Frontend development

TypeScript

React

Svelte

Ember

OAuth 2.0

OpenID Connect

JWT

SAML

PostCSS

MySQL

PostgreSQL

NoSQL

DynamoDB

Education

Bachelor's or Master's in Computer Science, Statistics, Mathematics, or related field

Tools

MySQL

PostgreSQL

DynamoDB

Job description

Addepar, a global data and AI platform, is seeking a Senior Software Engineer in Warsaw to build and maintain systems that authenticate users and enable self-service configuration. You will work on the identity platform across login, MFA, and admin tools used by client teams and end-clients.

Collaborate with product, design, and engineering to ensure compliance, regional privacy, and a smooth user experience.