About the role

Senior Java Developer - Platform & Performance

Location: Poland | Work model: remote

DataWalk is the Data and Analytics Platform with an Enterprise Knowledge Graph. DataWalk turns fragmented data into an enterprise knowledge graph - enabling humans and AI to uncover hidden patterns and answer complex multi-hop questions at a population scale. Our system is used by US Departments, Intelligence Agencies, and top Fortune500 companies to combat money laundering, fraud, human trafficking, terrorism, or organized crime. If you are interested in making the world a safer place and leveraging a unique business opportunity, please read further.

We are looking for an experienced Senior Java Developer to join our Platform & Performance Team.

The position will play a significant role in architecting, designing, developing and delivering high-performance Java-based software solutions that underpin our platform's stability, scalability, and efficiency.

Responsibilities:

Design and implement core components of the DataWalk platform.
Identify, recommend, design and implement non-functional and performance improvements.
Evaluate new technologies and their application to the business.
Work with team members and AI tools to conduct root cause analysis of issues, review code and/or design proper testing mechanisms.
Support back-end engineering efficiency initiatives.

Requirements:

8+ years of experience, preferably in a product company.
Fluent in Java, Spring, JDBC, SQL, Mockito, JUnit/TestNG.
Good knowledge of SQL databases (preferably columnar database), basic knowledge of noSQL solutions.
Hands-on experience with AI coding tools and agents, with the judgment to responsibly enhance productivity and platform capabilities without compromising security, reliability, or maintainability.
Experience in working with RESTful web services.
Exposure to AWS, OCI, Kubernetes.
Familiar with Redis, ActiveMQ Artemis (JMS), Docker.
A self-starter and able to work well with others in a fast-paced agile environment with an emphasis on collaboration.
Fluency in English and Polish.

Nice to have:

Knowledge of / experience in graph analytics.
Experience with TypeScript and Angular.
Exposure to building AI workflows.

Technical tools and stack:

MacOS (or Unix)
IntelliJ, Git, GitLab, Jenkins
Java 17
Spring, Spring Boot, Spring Security, JDBC, SQL, JMS, Lombok, Swagger, Mockito, JUnit/TestNG
RESTful web services
Kubernetes

We Offer:

Direct impact on the global expansion of the fast growing investigative analytics company with global ambitions.
A competitive compensation and access to professional development tools.
Growth opportunities in a dedicated and passionate team of professionals.
A challenging and inspiring environment.
Work remotely in a flexible, independent work environment.

Please send your CV or Linkedin Profile to: praca@datawalk.com

If you are interested in participation in future/other recruitment processes conducted by DataWalk S.A., please add in your application your consent to the processing of personal data for this purpose in the future, e.g. as following: "I consent to the processing by DataWalk S.A. of my personal data included in this application for the purpose of future/other recruitment processes”.

We will contact only the selected candidates.

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Senior Java Developer – Platform & Performance

About the role