Full-Stack Java Engineer: Secure, Scalable Microservices

b2bnetwork; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Job summary

b2bnetwork in Warszawa is seeking an experienced Full Stack Java Developer to design, develop, and maintain internet-facing Commercial Cards applications. You will work on microservices, REST APIs, and secure, scalable solutions within an Agile team.

Responsibilities include coding in Java/Spring Boot and Angular, implementing security best practices, and supporting CI/CD with Git, Bitbucket, Jenkins. You will explore AI tools to boost productivity and quality.

Qualifications

• 5+ years of Full Stack Java development experience.
• Java, Spring Boot, Microservices, REST APIs.
• Angular and Angular Material.
• Kafka and SQL databases.
• Docker and Kubernetes; Git, Bitbucket, Jenkins; CI/CD.
• Agile/Scrum way of working.
• Experience resolving SAST, container scan, and security vulnerabilities.
• Knowledge of secure coding and OWASP principles.
• Strong troubleshooting and problem-solving skills.
• English (B1+/B2 or higher).
• Must have some basic knowledge on using AI tools or willing to explore.

Responsibilities

• Design, develop, test, and maintain applications using Java, Spring Boot, Angular, Kafka, SQL, Docker, and Kubernetes.
• Develop and enhance microservices-based solutions following clean code principles and best practices.
• Build and maintain REST APIs and integrations with internal and external systems.
• Participate actively in Agile/Scrum ceremonies, including planning, refinement, reviews, and retrospectives.
• Collaborate with Product Owners, Analysts, Architects, Security Specialists, and Operations teams to deliver value.
• Analyze, troubleshoot, and resolve defects, incidents, and production issues.
• Identify and remediate security vulnerabilities detected through security assessments.
• Drive secure coding practices and improve security posture.
• Support CI/CD processes using Git, Bitbucket, and Jenkins for reliable delivery.
• Optimize performance, scalability, resilience, and maintainability.
• Create and maintain technical documentation and guidelines.
• Contribute to continuous improvement in development, automation, QA, and security.
• Work independently while collaborating in a cross-functional Agile team.
• Leverage AI-powered tools like GitHub Copilot and Microsoft 365 Copilot to improve efficiency and quality.
• Explore AI agents and intelligent automation to enhance delivery and value in Cards domain.

Skills

Full Stack Java

Java

Spring Boot

Angular

Kafka

SQL

Docker

Kubernetes

CI/CD

Agile/Scrum

Security vulnerabilities

OWASP

AI tools

English B1+

Tools

Git

Bitbucket

Jenkins

Job description

b2bnetwork in Warszawa is seeking an experienced Full Stack Java Developer to design, develop, and maintain internet-facing Commercial Cards applications. You will work on microservices, REST APIs, and secure, scalable solutions within an Agile team.

Responsibilities include coding in Java/Spring Boot and Angular, implementing security best practices, and supporting CI/CD with Git, Bitbucket, Jenkins. You will explore AI tools to boost productivity and quality.