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Senior Java Developer - API Gateway @ING Hubs Romania

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1 hour ago
Bucharest, RomaniaSenior

Responsibilities

  • Design, build, and maintain API Gateway platform components for inbound and outbound traffic.
  • Develop NGINX-based gateway configurations and custom modules for API gateway and front-end hosting use cases.
  • Build automation tooling for resource management, configuration deployment, and release train orchestration.
  • Implement reliability and resilience patterns, including circuit breakers, canary deployments, and DDoS mitigation across multiple data centers.
  • Collaborate with platform engineers, SREs, security teams, and product teams to onboard domains, troubleshoot issues, and define gateway standards.
  • Handle P1/P2 incidents, emergency production changes, and postmortem analysis.
  • Contribute to CI/CD pipelines, automated testing, configuration validation, and safe deployment across development, testing, acceptance, and production environments.

Requirements

  • At least 5 years of hands-on software engineering experience building and operating distributed systems or platform/infrastructure products.
  • Proficiency in Java.
  • Experience with Go, Python, C, or Bash is a plus.
  • Familiarity with Kubernetes, Docker, and CI/CD pipelines.
  • Knowledge of NGINX configuration, modules, and reverse-proxy patterns, or comparable technologies such as Envoy, HAProxy, or Kong.
  • Understanding of HTTP/HTTPS, TLS/mTLS, DNS, load balancing, firewalls, and DMZ architectures.
  • Strong debugging and incident-response skills, including working under pressure during P1/P2 incidents.
  • Strong communication and collaboration skills in a cross-functional, globally distributed team.
  • Preferred experience operating API gateways at scale in enterprise or financial-services environments.
  • Knowledge of OAuth 2.0, OpenID Connect, JWT, or SAML.
  • Familiarity with Grafana, Prometheus, ELK, SRE practices, SLOs, error budgets, and on-call operations.
  • Experience with high availability and disaster recovery across multiple data centers.

Benefits

  • Flexible way of working.
  • Role based in ING Hubs Romania’s Bucharest or Cluj-Napoca locations.
  • Collaborative environment with cross-functional and globally distributed teams.

Tech Stack

AmbassadorBashCDockerGoGrafanaJavaKubernetesLinuxOpenShiftPrometheusPython

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