Senior Java Developer

September 15, 2026

Office

Senior

Prague, Czech Republic

Important before applying

This job has conditions that may affect your decision to apply

Office-only work

Description

ShipMonk provides order fulfillment logistics services, operating from the USA with development centered in Prague. The platform handles warehousing to shipping for 1000+ small and medium e-shop clients, peaking at ~100k orders per day during high season. The system is a well-architected PHP modular monolith on Kubernetes, with select subsystems being rewritten in Java from scratch as right-sized services.

Responsibilities

Rewrite selected subsystems from PHP to Java from scratch
Design and implement REST-like API for diverse client types including web, robots, iOS devices, and conveyors
Build data integrations that smoothly connect with the existing monolith
Optimize SQL queries for terabyte-scale PostgreSQL database
Participate in two-round code reviews for all merge requests
Design applications to withstand race conditions in warehousing systems
Contribute to monorepo with CI checks and shared code

Requirements

Extensive Java development experience with modern Java versions
Skilled in designing and implementing advanced REST web applications
Experience with data integrations between services
Spring ecosystem including Spring Boot
Hibernate and PostgreSQL
RabbitMQ or similar message brokers
Docker and Kubernetes (AWS EKS)
Understanding of concurrency and race condition handling
SQL optimization skills for large-scale databases
CI/CD pipeline experience

Conditions

Multiple deployments per day via Argo CD to Kubernetes clusters
Isolated dev clusters per merge request for E2E and manual testing
Strict static analysis with Checkstyle, SpotBugs, ErrorProne, NullAway in GitLab CI
Automated API documentation generation from code
High availability infrastructure with failovers and autoscaling
Well-compatible tooling and codebase for modern AI agents

Java 22SpringPostgreSQLKubernetesDockerRabbitMQHibernateArgo CDlogistics

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