Senior Java Software Engineer

XTB online investing; Warszawa; Hybrid; PLN 228,000 - 301,000; Full time

Benefits offered by this job

Training budget for courses

Birthday off

Parental leave

Equipment provided

Private medical care

Wellbeing platform

Remote work option

Job summary

XTB online investing is hiring in Warsaw, Poland. You will work in a Scrum-driven environment, developing Java-based microservices and high-availability systems used by clients worldwide.

The role emphasizes ownership, collaboration with a senior team, and delivering scalable functionality. The position offers remote work options from a Warsaw office or coworking spaces, with a competitive salary range.

Qualifications

• Hands-on experience designing and evolving Java-based microservices.
• Ability to translate business analysis into technical solutions.
• Ownership and proactive risk identification.
• Commitment to clean, testable code and best practices.
• Strong collaboration with an experienced team.

Responsibilities

• Work in a Scrum environment with strong team collaboration.
• Develop multiple products, enabling a wide range of functionalities.
• Build high-performance systems with minimal latency.
• Ensure high availability and scalability for users worldwide.

Skills

Java

Microservices

Teamwork

Problem-solving

Communication

Tools

Java 17+

Micronaut

Kubernetes

gRPC

Protobuf

Kafka

PostgreSQL

MongoDB

Redis

Prometheus

Grafana

OpenTelemetry

JUnit

Testcontainers

GitLab CI

Jira

Confluence

GitHub Copilot

IntelliJ IDEA

Windsurf

Claude Code

GitLab

Google Workspace

Job description

XTB is a global company from the financial industry, focusing on online trading of financial instruments. We are the largest FinTech in Poland and a leader in Central and Eastern Europe, and the range of our operations covers several countries, including Asia and South America. At XTB, we focus on the development of our employees, giving them opportunities to gain knowledge and skills in various fields, as well as offering a number of training and development programs. If you are looking for challenges and want to gain valuable experience in an international business environment, XTB is the right place for you.

We are a certified Great Place to Work company.

Responsibilities

• Working in a Scrum environment, with a strong focus on effective team collaboration.
• Development of multiple products, offering the opportunity to build a wide range of functionalities.
• High-performance systems - we process massive volumes of data with minimal latency.
• A strong emphasis on high availability and scalability, supporting investments made by users all over the world.

Technologies

• Our microservices are primarily developed in Java 17+ using Micronaut.
• Deployed on Rancher (Kubernetes) across multiple data centers.
• Inter-service communication via gRPC and Protobuf.
• Asynchronous communication using Kafka, Pulsar, RabbitMQ, and Chronicle.
• Data storage in PostgreSQL, MongoDB, and Redis.
• Production monitoring with Prometheus, Grafana, OpenSearch, Opsgenie and Open Telemetry.
• Testing with JUnit and Testcontainers.
• Development in IntelliJ IDEA with GitHub Copilot, Windsurf and Claude Code support.
• Source code hosted on GitLab, with builds managed via GitLab CI.
• Task tracking in Jira and documentation in Confluence.
• Extensive use of Google Workspace: Gmail, Drive, Docs, Meet, and Chat.
• Internally developed GenAI tools available to all employees.

Requirements

• Strong Experience in building Java-based microservices - hands-on expertise in designing, implementing, and evolving microservices, with an understanding of scalability and performance challenges.
• Ability to deliver according to requirements - translating business analysis into concrete technical solutions while ensuring compliance with requirements and deadlines.
• Ownership and proactivity - taking responsibility for assigned tasks, identifying risks, and proposing solutions to ensure successful project delivery.
• Commitment to code quality - adhering to the highest engineering standards, focusing on clean, testable code and alignment with best practices and system architecture.
• Active contribution to project development - engaging in continuous improvement and optimization, proposing innovative solutions, and collaborating closely with the team toward shared goals.
• Experience in effective communication and collaboration with an experienced team - you are comfortable working with professionals with strong expertise, building productive working relationships, and aligning on goals and decisions within a mature team environment.

What We Offer

• Real influence on the development of the company and the product.
• Work in an experienced team that is happy to share its knowledge.
• A clear vision of development thanks to regular feedback and clear career paths.
• Regular team-building meetings.

Benefits

• A training budget for courses and conferences that interest you.
• An extra day off on your birthday.
• An extra day off for parents.
• Equipment tailored to your needs.
• Private medical care and group insurance.
• Access to an e-learning platform for learning English and a benefits platform.
• Access to a wellbeing platform and the opportunity to take advantage of workshops and private therapy sessions.
• Remote work, from the office in Warsaw or from a coworking space in your city.

20,400 zł - 27,000 zł a month

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.