Senior Java Developer
Miratech · Lublin, Lublin Voivodeship, Poland · Remote
Posted Oct 5, 2026
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We are looking to hire a Senior Java Developer who will take part in development and maintenance services for customized software solutions for large European customer, a provider of innovative software solutions for the public sector.
The client is a technology service provider specializing in digital solutions for public sector organizations. The company focuses on developing secure, scalable platforms that support administrative processes, data management, and digital transformation initiatives.
The project includes software application development in the tax administration domain. The system under development is the tax administration system that covers taxation processes in one of the European countries. This is the complex system that covers the full life-cycle of tax declarations processing and tax calculations and assessments that included integration with multiple external systems. The project team consist of 20+ people.
Responsibilities:
Implement software components according to the design specifications
Perform system integration and testing, problem troubleshooting, and resolution
Perform unit testing of software components
Participate in estimating project efforts and delivery timelines
Proactively collaborate with teammates and communicate with the Project Stakeholders to ensure that the Project efforts proceed efficiently and with predictability
Provide technical input into product roadmaps
Participate in triage activities (incident analysis and prioritization)
Support and optimize CI/CD processes
Project Tech Stack: 
Backend (Java): Spring, Quarkus. Frontend: Angular (latest versions)
Data & Integration: PostgreSQL,RESTEasy, Hibernate / Panache, Kafka
Architecture, DevOps & Tools: Microservices, Maven, Flyway, Docker, Kubernetes, GitLab, Jira, ArgoCD, Grafana
6+ years of experience in Java development
Strong experience with Spring Framework, Quarkus
Understanding of microservices architecture and containers (Docker/Kubernetes)
Experience with relational databases (PostgreSQL or other RDBMS)
Experience with REST/SOAP integrations and messaging (Kafka, ActiveMQ)
Good understanding of testing principles
Ability to communicate confidently in English
Strong communication and collaboration skills with stakeholders and distributed teams
Nice to have:
Experience in Angular front-end development
German or Swiss German language skills 
We offer:
Culture of relentless performance : join an unstoppable technology development team with a 99% project success rate and more than 30% year-over-year revenue growth. 
Competitive pay and benefits : enjoy a comprehensive compensation and benefits package, including health insurance, language courses, and a relocation program. 
ForeverRemote work culture : make the most of the flexibility that comes with remote work. 
Growth mindset : reap the benefits of a range of professional development opportunities, including…