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Xtb

Open since Sep 2026

Senior Java Software EngineerXtb · Warsaw

Senior Java Software Engineer

WarsawRemoteFull-time

AI Summary

Designs, builds and evolves high-performance, scalable Java 17+ microservices for financial trading products, working in a Scrum team with a focus on high availability and low-latency data processing.

About this role

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.

    • Skills

    GitLab CIGrafanaGRPCJavaJiraJUnitKafkaKubernetesMicronautMicroservicesMongoDBPostgreSQLPrometheusProtobufPulsarRabbitMQRedisTestcontainers

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