Lead Java Backend Developer

EPAM Systems; Polska; On-site; PLN 320,000 - 520,000; Full time

Job summary

EPAM Systems is seeking a Lead Java Backend Developer to design and implement scalable, real-time data platforms. You will drive distributed systems, microservices, and data streaming solutions using Java and Spring Boot in a client-focused, enterprise environment.

The role requires collaboration across global teams, adherence to SDLC, and leveraging AI-assisted tooling to boost efficiency. The candidate must communicate effectively in English and be comfortable working partially on client site.

Qualifications

• 7+ years of Java and Spring Boot development experience.
• Strong expertise in distributed systems and real-time data processing.
• Experience with microservices and data streaming architectures.
• Proficiency with cloud-native architectures and security best practices.
• Familiarity with Kafka, CosmosDB, PostgreSQL, Redis, and related technologies.
• Knowledge of REST, Azure, Docker and Kubernetes.
• Build tools experience with Maven and Gradle.
• Proven ability to translate requirements into scalable solutions.
• English proficiency at B2 level or higher.

Responsibilities

• Design and architect scalable enterprise platforms leveraging distributed systems and cloud-native architectures.
• Build and maintain real-time streaming and time-series data platforms with high performance and throughput.
• Develop microservices and data streaming solutions using modern Java frameworks.
• Apply resilience engineering and security best practices across backend systems.
• Translate business requirements into global technical solutions.
• Collaborate with cross-functional technology teams to deliver integrated solutions.
• Leverage AI-assisted tools to enhance software development efficiency.
• Implement CQRS and Event Sourcing patterns within enterprise architecture.
• Ensure adherence to SDLC best practices and modern software development standards.
• Adapt architectural approaches to complex business and regulatory domains.

Skills

Distributed systems

Real-time data processing

Microservices

Cloud-native architectures

Java

Spring Boot

SDLC

AI-assisted development

Tools

Kafka

CosmosDB

PostgreSQL

Redis

REST

Azure

Docker

Kubernetes

Maven

Gradle

Flowable

Job description

We are seeking a Lead Java Backend Developer with exceptional expertise in distributed systems, real-time data processing, and cloud-native architectures to deliver highly scalable enterprise platforms for high-throughput, mission-critical environments. Please note that working from the client's office 3 days per week is required.

Responsibilities

• Design and architect scalable enterprise platforms leveraging distributed systems and cloud-native architectures
• Build and maintain real-time streaming and time-series data platforms with high performance and high throughput
• Develop microservices and data streaming solutions using modern Java frameworks
• Apply resilience engineering and security best practices across backend systems
• Translate business requirements into global technical solutions
• Collaborate with cross-functional technology teams to deliver integrated solutions
• Leverage AI-assisted tools to enhance software development efficiency
• Implement CQRS and Event Sourcing patterns within enterprise architecture
• Ensure adherence to SDLC best practices and modern software development standards
• Adapt architectural and engineering approaches to complex business and regulatory domains

Requirements

• 7+ years of experience in Java and Spring Boot development
• Expertise in ORM frameworks such as JPA and iBatis
• Knowledge of security protocols including Azure AD and OAuth
• Proficiency in Kafka, CosmosDB, PostgreSQL, and Redis
• Familiarity with REST, Azure, Docker, and Kubernetes
• Skills in build tools such as Maven and Gradle
• Background in microservices and data streaming architectures
• Understanding of Computer Science fundamentals and modern software development practices, including SDLC
• Showcase of AI-assisted software development capabilitiesStrong communication skills, including the ability to translate business requirements into global solutions and collaborate with other technology teams
• English proficiency at B2 level or higher
• Nice to have Experience in Client Lifecycle domain Familiarity with Flowable