Senior Java Backend Engineer — Secure AI-Driven Banking

BAWAG Group; Wien; On-site; EUR 47,000 - 57,000; Full time

Benefits offered by this job

Office at Vienna Central Station

BAWAG Academy training

GoodHabitz e-learning platform

Job summary

BAWAG Group seeks a senior Java backend engineer to own core banking services, modernise existing systems, and strengthen API security in a regulated banking environment. You will help bring AI into production with document intelligence and API-driven automation while maintaining auditability and compliance.

You will design, build, and operate Java/Spring Boot backends, secure OAuth2/OpenID with Keycloak, and own production support and observability across hybrid on‑prem and Azure stacks.

Qualifications

• 7+ years of professional Java backend development.
• Strong Spring Boot, REST API design, and microservice architecture experience.
• Solid grasp of OAuth2, OpenID Connect, and Identity & Access Management (Keycloak or equivalent).
• Experience with PostgreSQL or comparable relational databases
• Comfortable with Docker, Git, Maven or Gradle, and CI/CD pipelines
• Experience delivering software in a regulated environment — banking, fintech, insurance, healthcare, or public sector.
• The judgement to work independently and the discipline to document decisions
• Genuine interest in applying AI to enterprise problems — and the instinct to ask how it fails before shipping it
• {LANGUAGE — e.g. English required; German an advantage for stakeholder work}

Responsibilities

• Design, build, and maintain backend services in Java and Spring Boot — REST APIs, microservices, event-driven integrations
• Take ownership of existing services: modernise them, harden them, and close technical and regulatory findings
• Secure API integrations using OAuth2, OpenID Connect, JWT, and Keycloak
• Build and operate services across our hybrid on-prem and Azure landscape, deployed through Jenkins pipelines with all artifacts sourced from our internal Nexus registry
• Develop AI-supported workflows — agentic API automation — with the security, auditability, and data‑protection controls a regulated bank requires
• Own quality: automated tests, meaningful observability, and production support for what you build
• Work directly with Product, QA, DevOps, Architecture, Security, and Business — not through layers

Skills

Java backend

Spring Boot

REST APIs

Microservices

OAuth2/OIDC

Keycloak

PostgreSQL

Docker

CI/CD

Regulated banking

Independent work

AI in production

Tools

Git

Maven/Gradle

Jenkins

Nexus

Azure

Job description

BAWAG Group seeks a senior Java backend engineer to own core banking services, modernise existing systems, and strengthen API security in a regulated banking environment. You will help bring AI into production with document intelligence and API-driven automation while maintaining auditability and compliance.

You will design, build, and operate Java/Spring Boot backends, secure OAuth2/OpenID with Keycloak, and own production support and observability across hybrid on‑prem and Azure stacks.