Senior Java Backend Engineer*

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 is the publicly listed holding company of BAWAG, which, with more than 4 million customers, is one of the largest banks in Austria. As a dynamic employer, we promote talent and drive technological innovation forward at a rapid pace. Flat hierarchies, a flexible working environment, and equal opportunities for our employees are particularly important to us.

We are looking for a senior Java backend engineer to take ownership of core banking services - systems that are supervised and audited.

This is not a greenfield-only role. You will take over and modernise existing services, strengthen API security, and make our platforms audit-defensible under regulatory scrutiny. Alongside that, you will help us bring AI into production the right way: document intelligence and API-driven automation that meet the same security, traceability, and compliance bar as everything else we ship.

If you want to build things that survive an audit and work with modern AI tooling, this is the role.

Your 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

Your Profile

• 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. You know what change control, four-eyes approval, and an audit finding actually mean in practice.
• 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}

Senior scope and expectations

• Own architecture decisions for critical backend services, balancing delivery speed with security, resilience, and auditability.
• Lead technical design reviews and guide implementation standards across teams.
• Mentor engineers through code reviews, pairing, and structured feedback.
• Take operational ownership in production: incident leadership, root‑cause analysis, and prevention actions.
• Drive cross‑team delivery by aligning Product, Security, DevOps, and Architecture on technical trade‑offs.
• Improve engineering maturity: documentation quality, test strategy, observability standards, and secure SDLC practices.

Nice to have

• Azure services, particularly Azure OpenAI or Azure AI Document Intelligence
• Kubernetes, API gateways, monitoring and observability tooling
• Hands‑on work with RAG pipelines, LLM integration, or agent frameworks (Semantic Kernel, LangChain, or similar)
• Messaging and event streaming (Kafka or equivalent)Experience with securities, payments, or lending domains

Tech stack

Java

• Spring Boot
• REST
• Microservices
• PostgreSQL
• Keycloak
• OAuth2/OIDC
• Docker
• Jenkins
• Nexus
• Azure
• Azure OpenAI
• Azure AI Document Intelligence

Our Offer

• You will spend 50% of your working time in our modern and easily accessible office at Vienna Central Station.
• We support your personal development and career planning with an individual and attractive training program. Visit our BAWAG Academy and use our GoodHabitz elearning platform for both your professional and personal growth.
• In addition, we offer a range of interesting and valuable additional benefits.

For this position, the collective agreement stipulates a minimum annual gross salary of € 51.947,84 on a full‑time basis. Depending on your experience and qualifications, we are willing to offer a higher salary.

Your contact person: Jutta Durstberger [phone]

• We value people.

Would you like to work in a team where good cooperation and diversity are actively practiced? Then you've come to the right place. Equal opportunity is important to us – regardless of age, gender, sexual orientation, physical impairment, religion or origin.

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