Senior Java Engineer – Data Analytics, Remote & Flexible

xflow; Warszawa; Hybrid; PLN 200,000 - 320,000; Full time

Benefits offered by this job

Competitive salary

Remote options

Career growth

Inclusive culture

Flexible hours

Job summary

X-FLOW is seeking a Senior Java Engineer to build an analytical system that processes petabytes of data. You will contribute across the full lifecycle from design to implementation, debugging, and documentation while balancing performance and complexity. Strong Java, Spring, SQL, and data storage design skills are essential.

Join a team with a modern tech stack (Gradle, Java 21+, AWS/GCP, Kubernetes) and a collaborative culture that emphasizes growth, flexibility, and impactful data solutions.

Qualifications

• Proficient in Java Core, memory model, and multithreading.
• Strong Spring Core/Data/MVC experience.
• Proficiency in SQL and relational databases.
• Understanding of software development principles.
• Understanding of data storage design principles.

Responsibilities

• You’ll be involved across the full lifecycle of tasks — from solution design through implementation, debugging, and documentation.

Skills

Java Core

Multithreading

Spring Core/Data/MVC

SQL

Relational databases

Software design principles

Data storage design

Tools

Gradle

Spring

Kubernetes (k8s)

RabbitMQ

AWS

GCP

BigQuery

Apache Camel

Neo4j

Job description

X-FLOW is seeking a Senior Java Engineer to build an analytical system that processes petabytes of data. You will contribute across the full lifecycle from design to implementation, debugging, and documentation while balancing performance and complexity. Strong Java, Spring, SQL, and data storage design skills are essential.

Join a team with a modern tech stack (Gradle, Java 21+, AWS/GCP, Kubernetes) and a collaborative culture that emphasizes growth, flexibility, and impactful data solutions.