Software Architect (Java / Spring Boot & Microservices)

About Joyful Craftsmen AG

For over 10 years, Joyful Craftsmen has been a trusted partner globally, empowering organizations to unlock the full potential of their data. Primarily serving clients across Europe while collaborating with companies worldwide through remote solutions, we help businesses turn data into a strategic asset through tailored delivery in areas such as Data and AI Strategy.

Overview

We are looking for an experienced Software Architect at Senior or Expert level to support a long-term strategic modernization program in a complex enterprise environment. The project focuses on further developing the target architecture and migrating existing Java EE applications and monolithic systems to a modern, Spring Boot-based microservices architecture.

Responsibilities

• Analyze and model business requirements in collaboration with business departments, product teams, and other stakeholders.
• Develop and maintain target, transition, and solution architectures for the modernization of existing Java EE applications.
• Design migration strategies and deployment concepts for transitioning legacy applications to a modern Spring Boot and microservices landscape.
• Develop architectural concepts covering application design, enterprise integration, interfaces, data models, data storage, and security.
• Create solution designs, technical concepts, and prototypes to support implementation and architectural decision-making.
• Advise development teams and stakeholders on architectural decisions, technology choices, and implementation approaches.
• Collaborate with multiple agile teams within a release train, ensuring architectural consistency across teams and systems.
• Review and assess architecture concepts and solution designs provided by external vendors.
• Support the implementation, operation, and continuous development of existing and modernized systems.
• Create and maintain technical architecture documentation in accordance with project standards, including HERMES where applicable.
• Work closely with development, operations, and external partners to ensure reliable integration and successful delivery.

Qualifications

• University degree in Computer Science or a comparable qualification.
• At least 5 years of experience as a Java Enterprise Architect for Senior level or 8 years for Expert level.
• Excellent knowledge of Java Enterprise technologies, Spring, and Spring Boot.
• Proven experience designing microservices architectures and modernizing or migrating legacy Java EE applications.
• Strong understanding of enterprise integration, interfaces, data architecture, and cloud-native architectural principles.
• Experience developing target and transition architectures, solution designs, and technical migration concepts.
• Experience working in complex enterprise environments and large-scale transformation projects.
• Strong communication and stakeholder management skills, with the ability to collaborate effectively across business and technical teams.
• German and English language proficiency at C1 level or higher.