Senior/Lead Java Engineer with Kubernetes Ingress at ApTask in Plano, TX

Job description

• We are seeking a Senior / Lead Engineer with 8–12 years of core engineering experience to join the Client Payments team supporting the Pay Edge Application.
• The ideal candidate must possess genuine, practical hands-on experience in Kubernetes Ingress and traffic routing, combined with strong microservices engineering skills in Java and Spring Boot.
• You will be responsible for designing resilient microservices, configuring secure traffic routing, and maintaining financial-grade performance standards.

Responsibilities

• Design, implement, and maintain production-grade Kubernetes Ingress controllers (NGINX, HAProxy, Traefik, Istio Gateway).
• Configure host-based and path-based traffic routing, load balancing, and reverse proxying for high-availability payment services.
• Manage TLS/SSL termination, certificate rotation, and secure external/internal traffic boundaries.
• Perform advanced troubleshooting on routing failures, HTTP 4xx/5xx errors, connectivity bottlenecks, DNS mapping, and controller issues.
• Architect and build scalable, secure microservices using Java and Spring Boot.
• Integrate asynchronous messaging and transaction streaming using Kafka.
• Ensure compliance with financial-grade security, low-latency processing, and high-resiliency requirements.
• Implement automated CI/CD deployment pipelines using Jenkins, GitLab CI, and Argo CD.

Requirements

• Deep hands-on production experience configuring, managing, and troubleshooting Kubernetes Ingress resources and controllers (NGINX Ingress Controller, HAProxy, Traefik, or equivalent).
• Practical experience with host-based and path-based routing, service exposure, reverse proxying, load balancing, TLS termination, certificate management, and security controls.
• Strong hands-on development skills in Java and Spring Boot (Go or Python experience is also relevant).
• Hands-on experience managing TLS certificates and securing endpoints.
• Real-world examples of diagnosing and resolving complex Ingress routing or controller incidents.
• Hands-on experience with cloud platforms (AWS, GCP, or Azure) and containerization/orchestration tools (Docker, Kubernetes).
• Apache Kafka or equivalent enterprise messaging systems for event-driven architecture.
• Hands-on experience with CI/CD pipelines (Jenkins, GitLab/GitHub Actions) and GitOps deployments using Argo CD.
• Terraform and/or Ansible for automated infrastructure provisioning. Amazon Web Services (AWS) or enterprise cloud infrastructure.

Skills

Required

• Kubernetes Ingress
• Traffic routing
• Java
• Spring Boot
• NGINX Ingress Controller
• HAProxy
• Traefik
• TLS/SSL termination
• Certificate management
• Docker
• Kubernetes
• Apache Kafka

Preferred

• Go
• Python
• GitHub Actions
• GCP
• Azure