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November 3, 2026
Java Backend Architect
Senior • On-site
Warsaw, Poland
Quick Facts
Role: Java Backend Architect
Work model: Weekly in-person team meeting at the client office; hybrid or fully remote options may be arranged
Description
Design backend architectures for new Java and Spring-based solutions and guide architectural changes to keep the system consistent. Propose and implement new technological approaches, design integrations using REST, SOAP, JSON and XML, and ensure quality, scalability, performance, and security. Troubleshoot production issues using monitoring and logging tools and produce architecture documentation with UML and Enterprise Architect.
Responsibilities
Architect new backend solutions in Java and Spring
Propose, implement, and optimize technological solutions
Oversee architectural changes and maintain system coherence
Design integrations between systems (REST, SOAP, JSON, XML)
Collaborate with development, analytics, infrastructure, and security teams
Create architectural documentation with UML and Enterprise Architect
Ensure solution quality, scalability, performance, and security
Analyze and resolve production problems using monitoring and logging tools
Improve team tools and working practices
Requirements
At least 1 year of experience as an Architect
At least 5 years of experience building Java applications
Very good knowledge of Spring or Spring Boot
Very good knowledge of backend application design
Knowledge of design and architectural patterns
Experience designing new solutions with UML and Enterprise Architect
Good or very good knowledge of database systems
Knowledge of Oracle and Elasticsearch
Knowledge of system integration topics: REST, JSON, SOAP Web Services, XML, XSD
Knowledge of Apache Kafka
Experience with Docker and Kubernetes
Knowledge of Git/Gerrit, Maven, IntelliJ IDEA, and JIRA
English knowledge enabling work with technical documentation and collaboration
Benefits
Interdisciplinary team of experts and technology enthusiasts
Long-term project engagement
Participation in diverse IT projects for well-known clients
Access to the latest technologies and engineering-standard environment
Flexible service delivery terms: hybrid or fully remote (set by each team)
Knowledge-sharing and development ecosystem: internal trainings, topic guilds, Cloud trainings and certifications through technology partnerships
Online English or German language learning and group classes
Access to Multisport and private medical care on preferential terms
Sailing trips in the Caribbean, Mediterranean, and Northern Sea with co-financing by Bluesoft
Remote recruiting and fully online individual onboarding
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