Java Developer

Java Developer

Working mode: Hybrid - you’ll be expected to work onsite at the Consid office 2-3 times per week.

Contract: B2B.

Language: English - C1 (Preferred)

Role overview

We’re seeking a skilled Java Backend Developer (4-7 years of experience) to join our clients Automation team on a long-term project in the telecommunications domain. You’ll work at the intersection of backend development and test automation, building reliable, scalable microservices in a highly collaborative, DevOps-oriented environment.

What you’ll do

• Design, build, and operate Spring Boot microservices and RESTful APIs that power customer-facing platforms.
• Champion event-driven patterns and integrate with internal/external services via messaging (RabbitMQ; Kafka a plus).
• Own services end-to-end in a DevOps model: CI/CD, observability, performance, reliability, security.
• Deploy and run workloads on AWS and Kubernetes (infrastructure as code and GitOps practices welcome).
• Ensure high quality through TDD/BDD, solid unit tests, contract tests, and continuous delivery.
• Collaborate with cross-functional teams; document decisions, APIs, and runbooks clearly.

Must-have qualifications

• 4-7 years hands-on with Java (8-17); strong knowledge of Spring Boot (3.x)/Spring 6.x.
• Proven experience with microservices architecture and REST API design & implementation.
• AWS experience (e.g., EC2, S3, RDS/IAM) and modern CI/CD (Jenkins, GitHub Actions, Docker, etc.).
• Kubernetes for deployment/operations (EKS/Helm a plus).
• Messaging systems: RabbitMQ (required); Kafka is a plus.
• Strong testing mindset (JUnit 5, Mockito; bonus: Spock/BDD), including coverage and test automation in pipelines.
• Databases: Oracle SQL (including performance tuning-joins, indexing, query optimization) and familiarity with MySQL/PostgreSQL.
• Caching (Redis/Hazelcast) and resilience patterns (e.g., Resilience4j, circuit breakers, retries, timeouts).
• Security best practices: OAuth2/JWT, input validation, and awareness of OWASP Top 10.
• Monitoring/observability with logs/metrics/traces (ELK/Elastic, Kibana; Splunk a plus).
• Comfortable on Linux (and Windows as needed); experience with Jira/Confluence.

Nice to have

• Event-driven architecture at scale (streams, CDC, outbox).
• Advanced Kubernetes topics (EKS, Helm, autoscaling, pod disruption budgets).
• GitOps/IaC (Argo CD, Terraform).
• Performance engineering (profiling, GC tuning, load testing).
• Security hardening (mTLS, secrets management).
• Interest or hands-on experience with AI/ML for testing/automation/agents.
• JavaScript/TypeScript familiarity (Vue 3 or similar) for occasional tooling or internal UIs.
• Resilience & reliability practices (SLOs, error budgets, chaos testing).

How you work

• Open-minded, curious, and solution-oriented.
• Comfortable owning services end-to-end and stepping outside formal roles when needed.
• Strong communicator with a user- and business-focused mindset.
• Thrives in non-hierarchical, high-performing teams and continuous improvement cultures.