JVM Software Engineer Job at Inetum (Warsaw)

Senior Software Engineer - Data Integration & JVM Ecosystem

The Connectors team is the bridge between ClickHouse and the entire data ecosyst...

Location

Germany

Salary:

Not provided

ClickHouse

Expiration Date

Until further notice

Requirements

6+ years of software development experience focusing on building and delivering high-quality, data-intensive solutions
Proven experience with the internals of at least one of the following technologies: Apache Spark, Apache Flink, Kafka Connect, or Apache Beam
Experience developing or extending connectors, sinks, or sources for at least one big data processing framework such as Apache Spark, Flink, Beam, or Kafka Connect
Strong understanding of database fundamentals: SQL, data modeling, query optimization, and familiarity with OLAP/analytical databases
A track record of building scalable data integration systems (beyond simple ETL jobs)
Strong proficiency in Java and the JVM ecosystem, including deep knowledge of memory management, garbage collection tuning, and performance profiling
Solid experience with concurrent programming in Java, including threads, executors, and reactive or asynchronous patterns
Outstanding written and verbal communication skills to collaborate effectively within the team and across engineering functions
Understanding of JDBC, network protocols (TCP/IP, HTTP), and techniques for optimizing data throughput over the wire
Passion for open-source development

Job Responsibility

Own and maintain critical parts of ClickHouse's Data engineering ecosystem
Own the full lifecycle of data framework integrations - from the core database driver to SDKs and connectors
Build the foundation that thousands of Data engineers rely on for their most critical data workloads
Collaborate closely with the open-source community, internal teams, and enterprise users to ensure our JVM integrations set the standard for performance, reliability, and developer experience

What we offer

Flexible work environment - ClickHouse is a globally distributed company and remote-friendly
Healthcare - Employer contributions towards your healthcare
Equity in the company - Every new team member who joins our company receives stock options
Time off - Flexible time off in the US, generous entitlement in other countries
A $500 Home office setup if you’re a remote employee
Global Gatherings – opportunities to engage with colleagues at company-wide offsites

Senior Software Engineer - Data Integration & JVM Ecosystem

The Connectors team is the bridge between ClickHouse and the entire data ecosyst...

Location

United Kingdom

Salary:

Not provided

ClickHouse

Expiration Date

Until further notice

Requirements

6+ years of software development experience focusing on building and delivering high-quality, data-intensive solutions
Proven experience with the internals of at least one of the following technologies: Apache Spark, Apache Flink, Kafka Connect, or Apache Beam
Experience developing or extending connectors, sinks, or sources for at least one big data processing framework such as Apache Spark, Flink, Beam, or Kafka Connect
Strong understanding of database fundamentals: SQL, data modeling, query optimization, and familiarity with OLAP/analytical databases
A track record of building scalable data integration systems (beyond simple ETL jobs)
Strong proficiency in Java and the JVM ecosystem, including deep knowledge of memory management, garbage collection tuning, and performance profiling
Solid experience with concurrent programming in Java, including threads, executors, and reactive or asynchronous patterns
Outstanding written and verbal communication skills to collaborate effectively within the team and across engineering functions
Understanding of JDBC, network protocols (TCP/IP, HTTP), and techniques for optimizing data throughput over the wire
Passion for open-source development

Job Responsibility

Serve as a core contributor, owning and maintaining critical parts of ClickHouse's Data engineering ecosystem
Own the full lifecycle of data framework integrations - from the core database driver that handles billions of records per second, to SDKs and connectors that make ClickHouse feel native in JVM-based applications
Build the foundation that thousands of Data engineers rely on for their most critical data workloads
Collaborate closely with the open-source community, internal teams, and enterprise users to ensure our JVM integrations set the standard for performance, reliability, and developer experience

What we offer

Flexible work environment - ClickHouse is a globally distributed company and remote-friendly. We currently operate in 20 countries
Healthcare - Employer contributions towards your healthcare
Equity in the company - Every new team member who joins our company receives stock options
Time off - Flexible time off in the US, generous entitlement in other countries
A $500 Home office setup if you’re a remote employee
Global Gatherings – We believe in the power of in-person connection and offer opportunities to engage with colleagues at company-wide offsites

Fulltime

Senior JVM Software Engineer

The project is centered around order management, providing and maintaining multi...

Location

Poland , Poznań

Salary:

Not provided

Inetum

Expiration Date

Until further notice

Requirements

Spring boot 3.x
Java 17+
JPA/Hibernate
OpenAPI
SQL
PostgreSQL
GIT
Maven
Docker
Kubernetes

Job Responsibility

Provide and maintain multiple integration interfaces
Rewrite and migrate solutions from JBoss/WildFly and Java 6/8 to Spring Boot and Java 21

What we offer

Flexible working hours
Hybrid work model
Cafeteria system
Referral bonuses
Revenue sharing opportunities
Professional development
Team support
Team-building budget
Charitable initiatives
Local sports programs

Fulltime

Junior JVM Software Engineer

Junior JVM Software Engineer position focusing on migration from monolith JBoss ...

Location

Poland , Warsaw

Salary:

Not provided

Inetum

Expiration Date

Until further notice

Requirements

Java >21
REST
SPRING
Unit- and Integrations-Tests (Mockito, Testcontainers, JUnit 5)
Git
Swagger
IntelliJ

Job Responsibility

Migration logic from a monolith (JBoss 4) to a domain driven architecture with Spring Boot components

What we offer

Flexible working hours
Hybrid work model
Cafeteria system
Referral bonuses up to PLN6,000
Team-building budget
Participation in charitable initiatives and local sports programs
Training and certifications funding
Conference participation funding

Fulltime