Senior Java Backend Developer

New Monday

. Design, develop, and optimize Java backends and microservices using Spring Boot .

Posted 10/5/2026full-timeRemote • GermanySeniorWebsite

Core Competencies

Role fit

Core Competencies

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Proficient in designing and optimizing Java backends and microservices using Spring Boot, with a strong focus on REST API development and IT security practices. Demonstrates expertise in CI/CD processes, container orchestration with OpenShift and Kubernetes, and effective collaboration with cross-functional teams.

Highest-signal resume keywords

Java DevelopmentSpring BootREST API DesignOpenShiftKubernetes

ATS Keywords

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Hard Skills

Microservice ArchitectureUnit TestingGitMavenTest AutomationIntegration TestingUI TestingOWASP Top 10PostgreSQLSpring Data JPA

Soft Skills

CollaborationCommunicationWorkshop FacilitationTechnical Documentation

Tools & Technologies

GitLab CI/CDArgo CDMockitoWireMockCucumberGrafanaPrometheus

Industry Keywords

Statutory Health-Insurance SectorData ProtectionAuthenticationAuthorizationMonitoringLoggingTracing

Tech Stack

Tools & technologies

AngularGrafanaJavaJMeterKubernetesMavenMicroservicesMockitoOpenShiftPostgresPrometheusSOAPSpringSpring BootSpringBoot

About the role

Key responsibilities & impact

Design, develop, and optimize Java backends and microservices using Spring Boot
Design REST APIs and event-driven communication between distributed systems
Translate business requirements, epics, and user stories into technical solutions
Advise on architectural decisions
Enhance existing applications, refactor code, and optimize data access and performance
Support the operation of containerized applications on OpenShift and Kubernetes
Further develop CI/CD and GitOps processes
Implement security requirements for authentication, authorization, and data protection
Ensure software quality through automated testing, code reviews, and error analysis
Improve monitoring, logging, and tracing
Support production rollouts
Collaborate with business departments and technical teams, participate in workshops, and document solutions clearly and transparently

Requirements

What you’ll need

Completed degree in IT or a comparable qualification
At least five years of hands-on experience with Java, Spring Boot, REST APIs, microservice architectures, unit testing, Git, and Maven
At least three years of experience with OpenShift or Kubernetes, GitLab CI/CD, and automated delivery, for example with Argo CD
At least three years of experience with relational databases such as PostgreSQL and Spring Data JPA
Strong experience with test automation, integration and UI testing, and code reviews
Experience with Mockito, WireMock, and Cucumber/Gherkin
At least three years of hands-on experience with IT security and data protection, as well as OWASP Top 10, OpenID Connect, and OAuth 2.0
At least two years of experience with monitoring and observability, for example Grafana and Prometheus, as well as logging, tracing, and troubleshooting production applications
Experience working in agile teams, refining and estimating user stories, and collaborating with business departments
At least two years of experience providing subject-matter consulting in the statutory health-insurance sector, conducting workshops and presentations, and preparing technical documentation
Very good German language skills, at least C1 level
Additional advantages: Angular, Google Lit or Thymeleaf, GraalVM and native images, Camunda, JMeter, SOAP, or knowledge of BITMARCK, particularly BITMARCK_21c|ng

Benefits

Comp & perks

100% remote work and location-independent employment throughout Germany; temporary work from other EU countries in accordance with legal requirements
Monthly budget for in-person meetings with colleagues
Regular digital team evenings and online events
Company-wide team meetups at the Berlin hub once or twice a year
Weekly learning sessions
Professional development opportunities and support for earning certifications
Independent, flexible work without micromanagement
Focus on one project at a time rather than working on multiple projects simultaneously