Senior Fullstack Developer (Java, Angular, Kafka)

Optiveum; Warszawa; Hybrid; PLN 116,000 - 193,000; Full time

Job summary

Optiveum is seeking a Senior Fullstack Developer to join our client’s banking domain team. You will design, develop, test and maintain Java/Spring Boot/Angular applications, with a focus on performance and security.

You will work in a hybrid model with 60% office presence in Poland, contributing to REST APIs, microservices and CI/CD pipelines. Fluent English and strong problem-solving are essential.

Qualifications

• 5+ years of experience in Full Stack Java development.
• Strong skills in Java, Spring Boot, microservices and REST APIs.
• Angular and Angular Material experience.
• Kafka and SQL databases experience.
• Docker, Kubernetes, Git, Bitbucket, Jenkins and CI/CD experience.
• Experience resolving SAST, container scan and other security vulnerabilities.
• Knowledge of secure coding and OWASP principles.
• Agile/Scrum way of working.
• Fluent English.

Responsibilities

• Designing, developing, testing and maintaining applications using Java, Spring Boot, Angular, Kafka, SQL, Docker and Kubernetes.
• Developing and enhancing microservices-based solutions following clean code principles and best practices.
• Building and maintaining REST APIs and integrations with internal and external systems.
• Identifying and remediating security vulnerabilities through scanning and assessments.
• Driving secure coding practices and improving the security posture of internet-facing applications.
• Analysing, troubleshooting and resolving defects, incidents and production issues.
• Supporting CI/CD processes with Git, Bitbucket and Jenkins.
• Optimising application performance, scalability, resilience and maintainability.
• Collaborating with Product Owners, Analysts, Architects, Security Specialists and Operations teams, and taking part in Agile/Scrum ceremonies.
• Creating and maintaining technical documentation and operation guidelines.
• Using AI-powered tools and contributing to AI-adoption in the Cards domain.

Skills

Java

Spring Boot

Angular

Kafka

Microservices

REST APIs

Security awareness

Agile/Scrum

English

AI tools (basic)

Tools

Docker

Kubernetes

Git

Bitbucket

Jenkins

CI/CD

SAST

OWASP

GitHub Copilot

Microsoft 365 Copilot

Job description

Senior Fullstack Developer (Java, Angular, Kafka)

About the Offer

We are currently looking for a Senior Fullstack Developer to join the team of our global client from the banking sector. For this role, Optiveum is the recruitment and contracting party, which means you will sign the cooperation agreement directly with us.

You will work as a Full Stack Java Developer within the Cards Service Domain, developing, maintaining and continuously improving internet-facing Commercial Cards applications, with a strong focus on availability, performance and security. The client is looking for long-term cooperation.

Key Details:

• Rate: up to 140 PLN/h net + VAT (B2B)

• Work Model: Hybrid – min. 60% office presence

• Location: Gdańsk or Warsaw

• Key Skills: Java, Spring Boot, Angular, Kafka, Microservices

Responsibilities:

• Designing, developing, testing and maintaining applications using Java, Spring Boot, Angular, Kafka, SQL, Docker and Kubernetes.

• Developing and enhancing microservices-based solutions following clean code principles and best practices.

• Building and maintaining REST APIs and integrations with internal and external systems.

• Identifying and remediating security vulnerabilities found through SAST, container and dependency scanning, penetration testing and other assessments.

• Driving secure coding practices and improving the security posture of internet-facing applications.

• Analysing, troubleshooting and resolving defects, incidents and production issues.

• Supporting CI/CD processes with Git, Bitbucket and Jenkins.

• Optimising application performance, scalability, resilience and maintainability.

• Collaborating with Product Owners, Analysts, Architects, Security Specialists and Operations teams, and taking part in Agile/Scrum ceremonies.

• Creating and maintaining technical documentation, including solution designs and operational guidelines.

• Using AI-powered tools such as GitHub Copilot and Microsoft 365 Copilot, and contributing to the adoption of AI agents and intelligent automation in the Cards domain.

Requirements:

• 5+ years of experience in Full Stack Java development, including testing your own changes.

• Strong skills in Java, Spring Boot, microservices and REST APIs.

• Angular and Angular Material.

• Kafka and SQL databases.

• Docker, Kubernetes, Git, Bitbucket, Jenkins and CI/CD.

• Experience resolving SAST, container scan and other security vulnerabilities.

• Knowledge of secure coding and OWASP principles.

• Agile/Scrum way of working.

• Strong troubleshooting and problem-solving skills.

• Basic knowledge of AI tools, or willingness to explore them.

• Fluent English.

Nice to have:

• Experience in the banking, cards or payments domain.

• Experience with cloud platforms.

• DevSecOps and vulnerability management experience.

• Performance tuning and application monitoring.

• Technical mentoring and coaching experience.