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Sr. Software Engineer, Identity Management & Authentication

Office Flexible - Warsaw, Poland💼 Full-time💰 $310,000–$372,000🗓 2026-08-27 → 2026-09-26

Core

Build and maintain systems and interfaces for user authentication and self-service product configuration, creating responsive user journeys from login/MFA to administrative tools.

Role type

Senior full-stack software engineer (identity & authentication)

Builds

User and customer configuration tools, authentication experiences, and identity platform interfaces

Domain

Financial technology / Identity management

Deliverable

production ML models | product features

Required skills

Java, TypeScript, OAuth 2.0, OpenID Connect, SAML, SQL, relational databases, NoSQL

Preferred skills

Svelte, Ember, React, PostCSS, JWTs, secure session management

Technologies

Java, TypeScript, Svelte, Ember, React, PostCSS, MySQL, PostgreSQL, DynamoDB

Responsibilities

Author Java APIs and web UIs for user configuration tools; Migrate authentication experiences to new platforms; Bridge architectural identity investments with product-driven UX improvements; Provide expertise on authentication protocols during product design

Seniority

Senior, hands-on IC

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