Senior Software Engineer (Java)

Quick Facts

• Role: Senior Software Engineer (Java)
• Work model: Hybrid (3 days/week in the Kraków office)
• Team focus: Marketing Automation within the Customer API platform (Communication domain)
• Core tech: Java 25, Spring Boot 4, Azure Service Bus/Event Hubs, PostgreSQL, Kubernetes (AKS), Terraform, Azure DevOps

Description

Work on event-driven microservices and data pipelines on Azure that connect millions of customers with personalized marketing experiences. You will lead architectural decisions, mentor engineers, and help shape engineering standards within a DevOps model with end-to-end ownership, on-call support, and continuous delivery.

Responsibilities

• Lead the design and architecture of platform capabilities and customer-facing integrations.
• Drive architecture decisions for event-driven microservices and document choices as ADRs.
• Design, build, and maintain microservices integrating customer data with external marketing platforms.
• Develop and evolve Azure Service Bus/Event Hubs event-driven solutions for high-volume streams.
• Build gateway services using patterns such as gateway, outbox, and idempotent processing.
• Define and implement unit/integration/functional/regression test strategies.
• Champion CI/CD best practices with Azure DevOps pipelines.
• Manage infrastructure as code with Terraform and Helm; deploy to Kubernetes on Microsoft Azure.
• Ensure security, resilience, and observability using New Relic APM and alerting.
• Maintain documentation (runbooks, API specs, system design, operational guides) and mentor peers through code reviews.
• Evaluate and advocate new technologies; use AI coding tools to improve engineering efficiency.

Requirements

• 6+ years of production Java engineering experience
• Strong Java 25 expertise (records, sealed classes, virtual threads, pattern matching)
• Experience with Spring Boot (DI, REST, data access, testing)
• Ability to design simpler, maintainable solutions for complex business needs
• Proven ability to write clean, maintainable, well-tested code and apply deployment best practices
• Hands-on experience with event-driven architectures and messaging (Azure Service Bus/Event Hubs or RabbitMQ/Kafka equivalents)
• Cloud experience (Microsoft Azure preferred; AWS or GCP valued)
• Relational database experience (PostgreSQL or equivalent), including schema design, query optimization, and Flyway/Liquibase migrations
• Experience defining test strategies (unit, integration, regression)
• Track record of owning and leading technical delivery (architecture decisions, stakeholders, cross-team collaboration)
• Agile experience (Scrum or Kanban)
• Strong written and verbal English communication
• Proactive, quality/reliability/security-focused ownership mindset

Benefits

• Competitive compensation tied to skills and experience
• Regular performance reviews and personalized learning programs
• Flexible work setup (remote or office)
• Bonuses for article writing, public talks, and other activities
• Generous paid time off (vacation, national holidays, sick leave, family days)
• Free tech webinars and meetups, plus regular corporate online activities