Senior Integration Software Engineer (m/f/d)

Knauf; Katowice; Hybrid; PLN 180,000 - 300,000; Full time

Benefits offered by this job

Permanent contract

Flexible working hours

Health initiatives & discounts

Parking & transport access

Welcome days & onboarding

Career development support

Inspiring office environment

Job summary

Knauf Information Services GmbH in Katowice seeks a Senior Java & Quarkus software engineer with enterprise integration expertise. You will design and run cloud-native microservices in a Kubernetes environment, connecting SAP ECC/S4HANA with SAP/Non-SAP tools, while shaping architecture patterns and ensuring robust data pipelines.

You will lead integration efforts, mentor engineers, and uphold security, observability, and DevOps practices in a dynamic IT landscape.

Qualifications

• 8+ years of software engineering experience in Java with enterprise integration.
• Strong hands-on experience with Quarkus, cloud-native patterns, and microservices.
• Proven SAP and non-SAP integration experience (ECC/S4HANA, CPI/PI-PO or MuleSoft).
• Experience with Kafka, API gateways (Kong), and data platforms (Databricks).

Responsibilities

• Build Cloud-Native Microservices: design, build, and run high-performance services in Kubernetes using Java & Quarkus.
• Implement Enterprise Integration Interfaces (SAP & Non-SAP) linking SAP ECC/S4HANA with integration tools.
• Follow & Help Shape Architecture Patterns within EA/SA integration guidelines.
• Connect Ecosystem & Data Pipelines with Confluent Kafka, Kong, and Databricks for reliable data exchange.
• Ensure Resilience & Observability with OAuth2/OIDC, TLS, CI/CD, and OpenTelemetry.
• Drive Engineering Excellence by leading implementation, code reviews, and mentoring engineers.

Skills

Java & Quarkus

Enterprise integration

REST & gRPC

DevOps fundamentals

Cloud-native

Microservices

Tools

Kubernetes

Docker

SAP ECC/S4HANA

IS/PI/PO

MuleSoft

Confluent Kafka

Kong

Databricks

Job description

Knauf stands for opportunity. This exciting role offers you the ideal opportunity to begin and further develop an impressive career within a values-driven culture.

As a global building materials manufacturer with 43,500 employees in 90 countries, we offer diverse opportunities to ambitious talent. We value every contribution and are committed to creating a safe and inclusive work environment with the aim of developing sustainable solutions for a better future.

Knauf Information Services GmbHis proud to be a part of the Knauf Group. With a long-standing tradition, and a growing international presence, we are seeking dedicated individuals to help us achieve our long-term vision.

Can you say ‘yes’?

• Is respectful and appreciative interaction within the team a given for you?

• Do you always put the customer at the center of your actions?

• Do you consider the future and upcoming generations in your actions?

• Do you strive for personal and professional growth?

What you'll do

• Build Cloud-Native Microservices: Design, build, and run high-performance microservices using Java & Quarkus, Dapr, and event-driven patterns in a Kubernetes environment.

• Implement Enterprise Integration Interfaces (SAP & Non-SAP): Develop and deploy integration flows connecting SAP systems (ECC / S/4HANA) with SAP integration tools (IS, PI/PO, APIM, Datasphere, BTP Extensibility).

• Follow & Help Shape Architecture Patterns: Adhere strictly to established Enterprise (EA) and Solution Architecture (SA) integration patterns, with opportunities to participate in defining and designing new patterns as requirements evolve.

• Connect Ecosystem & Data Pipelines: Configure integration mechanisms for event-streaming (Confluent Kafka), external API management (Kong), and data platforms (Databricks, Azure tools) to ensure reliable data exchange across SAP, non-SAP platforms, microservices, internal core and local systems, external business partners and legal regulators entities.

• Ensure Resilience & Observability: Apply enterprise security standards (OAuth2/OIDC, TLS), automated CI/CD, and unified observability (OpenTelemetry).

• Drive Engineering Excellence: Lead technical implementation, conduct code reviews, and mentor engineers across full-lifecycle service delivery.

Who you are

• Senior Java & Quarkus Expertise: 8+ years of software engineering experience in Java and enterprise integration, with strong hands-on expertise in Quarkus and cloud-native frameworks.

• SAP & Heterogeneous Systems Integration: Solid hands-on experience integrating SAP landscapes with complex non-SAP corporate and external environments at least with ECC integration layers, preferably (nice to have) through SAP Integration Suite (CPI), SAP PI/PO or MuleSoft.

• Architectural Governance & Mindset: Proven discipline in working within established EA/SA integration patterns, combined with the capability to contribute to designing new patterns when necessary.

• Integration & Streaming Ecosystem: Working knowledge of Kafka (Confluent) for event-driven flows, Kong for API gateway configuration, integration with Databricks is nice to have.

• Microservices & DevOps Fundamentals: Deep understanding of REST/gRPC APIs, Docker, Kubernetes, CI/CD, and relational/NoSQL databases.

• Technical Leadership & Ownership: Track record of guiding development teams, participating in design sessions, and collaborating effectively with architects and Product Owners.

What we offer you

We all shape our lives individually. As an employer, we play a significant role in the daily life of our employees and aim to support them with various offerings. This includes, among other things:

• Security: Permanent employment contract in a stable, successful family owned business

• Flexibility: A wide time window for flexible working and weekly remote days

• Fitness and health: Discounts on various sports and leisure activities, active health promotion, private health care, occupational safety, and more

• Time Savings:Parking and direct access to public transport (train, bus)

• Feel Approach: Welcome days and individual onboarding, company and team events

• Personal career and career development: Individual support for extra-occupational studies, further education and training courses

• Inspiring work environment: Our nicely designed office offers you an environment that fosters creativity and productivity. We love coming together as a team here!

Knauf as an employer

Knauf Information Services GmbHis a key driver of the KNAUF Group's global growth and digital transformation. A team of 500 highly qualified experts is committed to supporting the Group and its customers worldwide with innovative IT solutions and customized services. The core competencies of Knauf IT cover a wide range of IT services, including the development and implementation of complex software solutions, the optimization of business processes through digital technologies and ensuring IT security and data protection.

The Knauf Group is proud to be an equal opportunity employer. We are committed to a diverse and inclusive work environment, and we make all personnel decisions across all areas of our company based on experience, skills and integrity. We encourage applicants from all walks of life to apply for our positions, regardless of age, gender, gender identity, disability, sexual orientation, origin, religion and so forth.

Share our values and become part of the team to shape the future of Knauf together.