New offer - be the first one to apply!
November 3, 2026
Java Full-Stack Developer (Backend Focus)
Senior • On-site
120 - 150 PLN/yr
Warsaw, Poland
Quick Facts
Role: Java Full-Stack Developer (backend focus)
Focus: backend architecture quality, data security, and application uptime
Description
You will design and implement backend-focused changes for a key system, with shared responsibility for architecture quality, data security, and production continuity. The work includes planning technical assumptions, implementing agreed changes, performing code reviews, and reducing technical debt. You will also support deployments and maintenance while diagnosing issues found in UAT and production monitoring.
Responsibilities
Design and agree technical assumptions for implementing system changes, ensuring data integrity, security, architecture quality, operational continuity, and impact on the technical backlog
Implement agreed changes according to Partner standards
Review code delivered to the shared repository for compliance with standards and change assumptions
Prevent technical debt by initiating refactoring activities and co-owning a system debt register
Provide software and subject-matter support for deploying solutions and maintaining application modules
Diagnose, analyze, and fix defects reported in UAT tests and maintenance issues observed via production monitoring
Estimate the effort required for changes in the information system
Requirements
Minimum 4 years of experience as a developer on commercial projects
Minimum 3 years with Java (Java 18+) and knowledge of Spring Boot 3+ and JPA
Minimum 3 years with PostgreSQL
Minimum 2 years with Angular (Angular 19+), TypeScript, and NodeJS
Minimum 2 years experience in agile development (Scrum preferred)
Integration knowledge: REST, SOAP, Kafka
Containerization tools: Docker, Kubernetes
Application servers: Tomcat; environments: Linux and Windows
Build tools: Maven or Gradle; CI/CD: Jenkins or GitHub Actions
Version control: Git plus GitHub/Bitbucket
Debugging and analysis tools: Kibana, Elasticsearch
Knowledge of design and architectural patterns
Self-organization, responsibility for service delivery, and openness to changes and new ideas
English proficiency to freely read technical documentation
Benefits
Flexible B2B collaboration model for projects delivered for a well-known partner in the insurance industry
Fast and remote process
Administrative and billing support from Connectis
Participation in industry events and technology meetups
PLN 5,000 referral bonus for bringing friends to the projects
Similar jobs you might like
Full-Stack Java Developer (Backend Focus)
IT Factory
Senior
Technology
Warsaw, Poland · On-site
N/A
1h ago

Senior Full-Stack Developer (Java)
Ness Solution
Senior
Technology
Warsaw, Poland · Remote
0K zł - 0K zł/yr
1h ago

Full-Stack Developer (Java, Spring Boot, Angular)
Fabrity S.A.
Senior
Technology
Warsaw, Poland · Remote
0K zł - 0K zł/yr
1h ago

Full-Stack Developer (Java & Angular)
j-labs
Senior
Technology
Kraków, Poland · On-site
0K zł - 0K zł/yr
1h ago
Java Backend Developer (Spring Boot, Integrations, Databases)
AKCENTA CZ a.s.
Mid
Technology
Hradec Králové, Czechia · Hybrid
N/A
16 days ago
Full-Stack Java Developer
apreel
Mid
Technology
Warsaw, Poland · Remote
312K zł - 354K zł/yr
1h ago

Java Full-Stack Developer
INFOPLUS TECHNOLOGIES
Mid
Technology
Warsaw, Poland · Remote
1K zł - 1K zł/yr
1h ago
Java and React Full-Stack Developer
Strategicsiq
Mid
Technology
Kraków, Poland · On-site
1K zł - 2K zł/yr
1h ago
Unlock Full Resume Report
ATS Pass
Missing keywords
Tailored AI suggestions
Job match analysis
Interview-focused insights
