Senior Java Lead: Cloud-Native Microservices

Experis; Kraków; Hybrid; PLN 420,000 - 540,000; Full time

Job summary

Experis in Kraków is seeking a senior Java developer to join an international team building cloud-native, high-performance applications. Hybrid work model: 3 days per week in the Kraków office, with global collaboration across time zones.

You will design, develop, and maintain large-scale systems, contribute to architectural decisions, and work with Spring Boot, microservices, Kafka, and real-time data platforms.

Qualifications

• 12+ years of professional experience in software development with Java.
• Experience with microservices and data streaming architectures.
• Strong knowledge of security technologies, including Azure AD and OAuth.
• Experience with AI-assisted software development practices.

Responsibilities

• Take over responsibilities and knowledge from the current vendor.
• Design, develop, and implement new application functionalities.
• Maintain, enhance, and optimize existing applications.
• Collaborate with business stakeholders and technology teams to deliver scalable solutions.
• Support the development of real-time, high-throughput data platforms.
• Leverage AI-assisted development tools to improve software delivery and productivity.

Skills

Microservices

Data streaming architectures

Azure AD & OAuth security

AI-assisted development

SDLC knowledge

Communication skills

Tools

Java

Spring Boot

Flowable

JPA / iBatis

Kafka

PostgreSQL

Cosmos DB

Redis

REST APIs

Azure Cloud

Docker

Kubernetes

Maven

Gradle

Job description

Experis in Kraków is seeking a senior Java developer to join an international team building cloud-native, high-performance applications. Hybrid work model: 3 days per week in the Kraków office, with global collaboration across time zones.

You will design, develop, and maintain large-scale systems, contribute to architectural decisions, and work with Spring Boot, microservices, Kafka, and real-time data platforms.