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Software Back-end Architect

ShijiGroup

Katowice, Silesian Voivodeship, Poland Hybrid permanent

Posted: February 24, 2026

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Quick Summary

Design and architect large-scale enterprise applications in a cloud-based environment, focusing on security, scalability, and industry best practices, utilizing Java Spring Boot and Agile methodologies.

Job Description

Shiji Group is looking for a Software Architect to join our Barcelona team. You will be designing, developing and maintaining large enterprise applications, focusing on security, scalability and industry best practices. Collaborating with cross-functional teams in an Agile environment, you will deliver the highest quality solutions. A strong background in Cloud Architecture Design, Design Patterns and Java Spring Boot is essential, along with expertise in modern software development practices.

• Design and architect enterprise-level applications for large-scale systems, ensuring scalability, reliability and performance.
• Collaborate with development teams to implement best practices in coding, code complexity reduction and static analysis.
• Ensure compliance with OWASP security standards and integrate security measures into the software development lifecycle.
• Develop and maintain RESTful platforms and APIs for seamless integration with other systems.
• Implement CQRS (Command Query Responsibility Segregation) architecture to optimize data handling and system performance.
• Refactor existing code aiming for performance, cost reduction and maintainability.
• Work with Agile methodologies to deliver high-quality software in iterative cycles.
• Lead data transformation initiatives to ensure efficient data processing and storage.
• Collaborate with cloud architecture teams to design and deploy applications on Cloud platforms.
• Provide technical mentorship to development teams.
• Stay up to date with emerging technologies and industry trends to continuously improve our systems.

• 5+ years of experience as a Software Architect or in a similar role.
• In-depth knowledge of Messaging Systems, CQRS architecture, and its implementations in large-scale systems.
• Strong expertise in Java and Spring Boot for writing microservices.
• Proficiency in designing and developing RESTful platforms and APIs.
• Solid understanding of cloud architecture concepts.
• Familiarity with static analysis tools and techniques to ensure code quality.
• Strong understanding of Agile methodologies and experience working in Agile teams.
• Expertise in data transformation and optimizing data workflows.
• Proven ability to write unit tests and ensure high code coverage.
• Excellent problem-solving skills and the ability to reduce code complexity.
• Strong communication skills in English (both written and spoken).

Nice-to-Have Skills

• Previous experience with AWS architecture and cloud-based solutions.
• Experience with CI/CD pipelines and DevOps practices.
• Solid knowledge of Kafka for event-driven architectures.
• Experience with Big Data technologies such as Hadoop or similar tools.
• Familiarity with NoSQL databases, including MongoDB, Elasticsearch, and Apache Cassandra.
• Strong understanding of relational databases like MySQL.
• Expertise in Microservices-based architecture using Docker and Kubernetes.
• Experience with modern front-end development technologies.

What Do We Offer?

•  Group life insurance,
•  Medicover premium with a dentist,
•  Worksmile cafeteria and 500 points per month to be used in vouchers,
•  English lessons
•  Referral bonus (starting from 6,500 PLN gross, depending on the position)
•  Chill room with table football and PlayStation
•  Lloyd’s insurance (available for B2B contractors)
•  Glasses subsidy (300 PLN/year for CoE employees)
• Access to platforms like: OpenUp, Pluralsight and GoodHabitz

Clause Regarding the Prohibition of Assistance Tools During Recruitment Interviews

In the interest of equal opportunity and transparency in the recruitment process, we would like to inform you that during job interviews (both remote and in-person), the following are not permitted: - the use of tools based on artificial intelligence (AI), including chatbots, response generators, translators, or content creation aids, - recording of interviews without prior and explicit consent from a company representative, - the use of applications that generate automatic notes or transcriptions of meetings (e.g., Notion AI, Otter.ai, Fireflies, etc.).

Please don’t forget to put the clauses you accept in your resume:

I agree that my personal data will be processed by Shiji Poland Sp. z o. o.  in order to recruit for the position I am applying for.

I agree to the processing of my personal data by Shiji Poland Sp. z o. o.  for the needs of future recruitment.

We thank all applicants for their interest, however only those candidates selected for interviews will be contacted.

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