Java Lead Developer

Java

poland, Warszawa

INFOPLUS TECHNOLOGIES

Freelance

B2B

Senior

Hybrid

Tech stack

Java

master

Spring

master

React

master

DevOps

advanced

Angular

advanced

Energy

advanced

Job description

Basic Qualifications• - Minimum 10 years of commercial experience developing web applications using the Java/Spring stack

- Team lead experience (requirements handling, decomposing user stories, managing middle/junior engineers, understanding scrum team roles, agile development methodology)

- DevOps experience (creating and improving CI/CD pipelines in cloud environments, networking, Unix, understanding k8s and docker registries)

- Knowledge of Apache Kafka is required. Candidates must have hands-on experience integrating Java applications with Kafka for real-time data processing.

- Distributed systems design

- Software and solution architecture experience

- Refactoring, performance, and memory tuning

- Build systems (Maven or Gradle): dependency management, build lifecycle, release and version management

- Git branching model (git flow, GitHub flow)

- Frameworks: Spring, ORM, messaging, security, batch, integration

- Databases: consistency models, SQL, distributed transactions

- Microservice architecture patterns and best practices, communication patterns: HTTP, messaging, gRPC, CQRS

- API design best practices including API First

- Algorithms and problem-solving skills

Published: 13.08.2025

Office location