Java Developer - ETL Development & Migration

Amaris Consulting; Eindhoven; On-site; EUR 90,000 - 130,000; Full time

Job summary

Amaris Consulting is seeking a Senior Data Engineer with hands-on Java/SQL/ETL expertise to support migrating existing ETL processes to a new environment. You will own implementations, analyze architectures, and work independently on critical data integration tasks.

The role emphasizes strong ownership, ability to read and modify legacy code, and collaboration with cross-functional teams to ensure smooth data movement across platforms.

Qualifications

• Advanced Java development experience is mandatory.
• Advanced SQL skills are required.
• Solid ETL and data integration knowledge.
• Experience with data engineering and data migration projects.
• Experience with REST/API-based integrations.
• Knowledge of AWS S3 or similar cloud storage.
• Experience with PostgreSQL or other relational databases.
• Ability to read, understand, and modify existing codebases independently.

Responsibilities

• Analyze existing ETL processes and platform architecture.
• Migrate and adapt ETL pipelines to the target cloud environment.
• Understand, maintain, and modify existing Java-based ETL code.
• Collaborate with both the source platform team and receiving business unit team.
• Contribute to architecture and integration decisions.
• Ensure successful data movement and integration between platforms.

Skills

Advanced Java

Advanced SQL

ETL & data integration

Data migration projects

REST APIs

AWS S3 / cloud storage

PostgreSQL / relational DB

Read/modify codebases

Job description

Job Description

Senior Data Engineer (Java / SQL / ETL)

We are looking for a Data Engineer 5+ years hands on experience in industry to support the migration of existing ETL processes to a new environment. This role requires a hands-on, independent professional who can quickly understand existing architectures, analyze documentation and code, and take ownership of the implementation.

Key Responsibilities

• Analyze existing ETL processes and platform architecture.


• Migrate and adapt ETL pipelines to the target cloud environment.


• Understand, maintain, and modify existing Java-based ETL code.


• Collaborate with both the source platform team and receiving business unit team.


• Contribute to architecture and integration decisions.


• Ensure successful data movement and integration between platforms.

Core Requirements

• Advanced Java development experience (mandatory)


• Advanced SQL skills (critical)


• Strong understanding of ETL processes and data integration


• Experience with data engineering and data migration projects


• Experience with REST/API-based integrations


• Knowledge of AWS S3 or similar cloud storage services


• Experience with PostgreSQL or other relational databases


• Ability to read, understand, and modify existing codebases independently

Nice to Have

• Apache Spark


• Azure Data Lake

Profile

• Senior-level professional with strong ownership and execution capabilities


• Able to work independently with minimal supervision


• Comfortable understanding existing solutions and adapting them to new environments


• Strong analytical and problem-solving skills

Who are we?

Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses. With more than 1,000 clients across the globe, we have been rolling out solutions in major projects for over a decade – this is made possible by an international team of 7,600 people spread across 5 continents and more than 60 countries. Our solutions focus on four different Business Lines: Information System & Digital, Telecom, Life Sciences and Engineering. We’re focused on building and nurturing a top talent community where all our team members can achieve their full potential. Amaris is your steppingstone to cross rivers of change, meet challenges and achieve all your projects with success.

At Amaris, we strive to provide our candidates with the best possible recruitment experience. We like to get to know our candidates, challenge them, and be able to give them proper feedback as quickly as possible. Here’s what our recruitment process looks like:

Brief Call: Our process typically begins with a brief virtual/phone conversation to get to know you! The objective? Learn about you, understand your motivations, and make sure we have the right job for you!

Interviews (the average number of interviews is 3 - the number may vary depending on the level of seniority required for the position). During the interviews, you will meet people from our team: your line manager of course, but also other people related to your future role. We will talk in depth about you, your experience, and skills, but also about the position and what will be expected of you. Of course, you will also get to know Amaris: our culture, our roots, our teams, and your career opportunities!

Case study: Depending on the position, we may ask you to take a test. This could be a role play, a technical assessment, a problem-solving scenario, etc.

As you know, every person is different and so is every role in a company. That is why we have to adapt accordingly, and the process may differ slightly at times. However, please know that we always put ourselves in the candidate's shoes to ensure they have the best possible experience.

We look forward to meeting you!