System Architect

KUBO; Województwo mazowieckie; Hybrid; PLN 180,000 - 260,000; Full time

Job summary

KUBO is seeking an experienced System Architect with strong Java development skills to join a technology team building modern, scalable IT systems for a leading insurance company.

The role blends hands-on coding (about 75%), architecture leadership, and guiding the development team to ensure high software quality. You will design microservices, drive technical improvements, and work with cross-functional teams in a hybrid Warsaw setting.

Qualifications

• At least 5 years designing and building web-based systems.
• Proven experience designing microservices architectures.
• Strong knowledge of architectural and integration patterns.
• Extensive experience with API design and system integration.
• Practical knowledge of Domain-Driven Design (DDD).
• Experience with relational databases, SQL, query optimization.
• Practical knowledge of Event-Driven Architecture.
• Experience implementing end-to-end observability.
• English proficiency at B2 level, Polish language at least C1.

Responsibilities

• Act as a Technical Lead within a Scrum team, providing technical guidance and supporting the team in day-to-day development.
• Actively develop and implement business requirements using Java.
• Design, develop, and evolve system architectures, microservices, and distributed systems.
• Collaborate with the Product Owner and business stakeholders to clarify requirements and translate them into technical solutions.
• Define and maintain coding standards, architectural principles, and integration guidelines.
• Conduct code reviews and ensure high standards of code quality, maintainability, and performance.
• Mentor developers and support the continuous development of the team's technical skills.
• Troubleshoot complex technical issues and help the team identify effective solutions.
• Design and oversee system integrations and API architecture.
• Ensure that solutions meet performance, security, scalability, and reliability requirements.
• Collaborate with other Scrum teams, architects, DevOps engineers, and integration specialists.
• Contribute to technology selection, architectural decisions, and technical risk assessments.
• Apply cloud technologies, preferably Microsoft Azure, where appropriate.
• Explore and leverage Agentic AI and other AI-powered tools in the software development lifecycle to improve productivity, automate tasks, and support technical decision-making.
• Availability to work in Warsaw in a hybrid model, with at least 3 days per week in the office and 2 days remotely.

Skills

Java development

Technical leadership

Microservices design

API design

Domain-Driven Design

Event-driven architecture

SQL databases

Code reviews

Mentoring

Azure cloud

Tools

Azure

Job description

We are looking for an experienced System Architect with strong Java development skills to join a technology team working on modern, scalable IT systems for a leading company in the insurance sector.

This is a hands-on technical role combining software architecture, active development, and technical leadership. The successful candidate will spend approximately 75% of their time coding, while also guiding the development team, making architectural decisions, and ensuring high standards of software quality.

The role offers an opportunity to contribute to the design and development of microservices-based applications, drive technical improvements, and collaborate closely with business stakeholders and cross-functional technology teams.

Key responsibilities:

• Act as a Technical Lead within a Scrum team, providing technical guidance and supporting the team in day-to-day development.
• Actively develop and implement business requirements using Java.
• Design, develop, and evolve system architectures, microservices, and distributed systems.
• Collaborate with the Product Owner and business stakeholders to clarify requirements and translate them into technical solutions.
• Define and maintain coding standards, architectural principles, and integration guidelines.
• Conduct code reviews and ensure high standards of code quality, maintainability, and performance.
• Mentor developers and support the continuous development of the team's technical skills.
• Troubleshoot complex technical issues and help the team identify effective solutions.
• Design and oversee system integrations and API architecture.
• Ensure that solutions meet performance, security, scalability, and reliability requirements.
• Collaborate with other Scrum teams, architects, DevOps engineers, and integration specialists.
• Contribute to technology selection, architectural decisions, and technical risk assessments.
• Apply cloud technologies, preferably Microsoft Azure, where appropriate.
• Explore and leverage Agentic AI and other AI-powered tools in the software development lifecycle to improve productivity, automate tasks, and support technical decision-making.
• At least 5 years of experience designing and building web-based systems.
• Proven experience designing microservices architectures and distributed systems.
• Strong knowledge of architectural and integration patterns.
• Extensive experience with API design and system integration.
• Practical knowledge of Domain-Driven Design (DDD).
• Experience with relational databases, SQL, and query optimization.
• Practical knowledge of Event-Driven Architecture.
• Experience implementing end-to-end observability.
• Experience conducting code reviews, mentoring developers, and providing technical leadership.
• English proficiency at B2 level, Polish language - at least C1
• Availability to work in Warsaw in a hybrid model, with at least 3 days per week in the office and 2 days remotely.

Conditions:

• Location: Warsaw (hybrid – 3 days in the office, 2 days remote)