Senior Java Backend Developer

Luxoft Poland; Kraków; Hybrid; PLN 180,000 - 240,000; Full time

Job summary

Luxoft Poland is seeking a Senior Java Backend Engineer to join a CASP-focused project in Krakow. You will design, develop and maintain backend services in a microservices environment and deploy cloud-native apps on Microsoft Azure with AKS orchestrations.

Role emphasizes Terraform IaC, Docker-based containerization, and CI/CD pipelines, plus integration using Kafka/IBM MQ/Tibco EMS and database work with Azure SQL, Oracle, or Sybase.

Qualifications

• Strong object-oriented programming with Java 11+
• Extensive experience with Spring Boot/Spring ecosystem
• Hands-on development of Web/REST APIs and message-driven services
• Experience building and running containerized applications
• Strong Azure cloud experience including Terraform IaC
• Kubernetes (AKS) and container orchestration
• Compute and storage solutions on Azure (VMs, Azure Files)
• Experience with AI-assisted development tools integrated into workflows
• Familiarity with GitLab/GitHub, IntelliJ/VSCode

Responsibilities

• Design, develop, and maintain backend services in a microservices architecture
• Build and enhance RESTful APIs and message-driven services
• Develop and deploy cloud-native applications on Azure with AKS orchestration
• Use Terraform to define and manage infrastructure as code
• Work with Docker and CI/CD pipelines (GitLab or GitHub)
• Integrations using Kafka, IBM MQ, or Tibco EMS
• Collaborate on system design to ensure scalability and resilience
• Develop and optimize database interactions (Azure SQL, Oracle, Sybase)
• Write unit, integration, and end-to-end tests
• Implement monitoring, logging, and observability for production systems
• Utilize Linux/Unix scripting for troubleshooting
• Leverage AI-assisted development tools to boost productivity

Skills

Java 11+

Spring Boot

REST APIs

Microservices

Azure cloud

Terraform

AKS

CI/CD

AI-assisted tools

Tools

Docker

Terraform

Azure Kubernetes Service (AKS)

Kafka

IBM MQ

Tibco EMS

Azure SQL

Oracle

Sybase

Job description

hybrid work - 3 days/week from the office Fabryczna Office Park, Krakow

Project Description:

The project is part of the Credit, Asset-backed & Securitized Products (CASP) division of an investment bank, focusing on platforms that support securitization and structured finance products. The current primary objective is migrating existing on-premise systems to a modern Microsoft Azure cloud environment, transforming legacy architecture into scalable, cloud-native solutions. It involves rebuilding and adapting systems used for structuring, processing, and distributing securities such as ABS, MBS, and CLOs. The platform integrates with trading, risk, and regulatory systems to support both real-time and batch data processing. The target architecture follows a microservices-based approach with containerized services deployed on Azure Kubernetes Service (AKS). Infrastructure provisioning and configuration are managed using Terraform as Infrastructure as Code. The system leverages REST APIs and event-driven communication to ensure scalability and flexibility during and after migration. Special focus is placed on maintaining data consistency, performance, and regulatory compliance throughout the transition. The project emphasizes high availability, resilience, and observability in a complex financial ecosystem. AI-assisted development tools like GitHub Copilot are integrated to enhance engineering productivity. The environment promotes modern engineering practices, automation, and continuous improvement.

Responsibilities:

Design, develop, and maintain backend services using Java 11+ and Spring Boot within a microservices architecture.

Build and enhance RESTful APIs and message-driven services supporting securitization and credit workflows.

Develop and deploy cloud-native applications on Microsoft Azure, including AKS-based container orchestration.

Use Terraform to define and manage infrastructure as code.

Work with containerization technologies (Docker) and contribute to CI/CD pipelines using GitLab or GitHub.

Implement integrations using messaging systems such as Kafka, IBM MQ, or Tibco EMS.

Collaborate on system design, ensuring scalability, resilience, and alignment with distributed architecture principles.

Develop and optimize database interactions using Azure SQL, Oracle, or Sybase.

Write and maintain unit, integration, and end-to-end tests to ensure code quality and reliability.

Implement monitoring, logging, and observability practices to support production systems.

Utilize Linux/Unix skills for troubleshooting and scripting.

Leverage AI-assisted development tools to improve efficiency while maintaining high coding standards.

Mandatory Skills Description:

Strong object-oriented programming skills with Java 11+

Extensive experience with Spring Boot / Spring ecosystem

Hands-on development of Web and/or REST APIs and message-driven services

Experience building and running containerized applications

Strong experience with Azure cloud, including:

Infrastructure as Code (IaC) using Terraform

Kubernetes (AKS) and container orchestration

Compute (VMs) and storage solutions (e.g., Azure Files)

Experience with AI-assisted development tools (e.g., GitHub Copilot) integrated into development workflows

Experience with GitLab / GitHub, IntelliJ / VSCode

Nice-to-Have Skills Description:

Microservices architecture and system design

Messaging and integration technologies: Kafka, IBM MQ, Tibco EMS

Testing frameworks (unit, integration and E2E testing)